./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi003_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i ./goblint.2024-05-21_14-57-05.files/protection/rfi003_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 18:36:31,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 18:36:31,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 18:36:31,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 18:36:31,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 18:36:31,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 18:36:31,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 18:36:31,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 18:36:31,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 18:36:31,639 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 18:36:31,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 18:36:31,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 18:36:31,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 18:36:31,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 18:36:31,640 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 18:36:31,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 18:36:31,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 18:36:31,641 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 18:36:31,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 18:36:31,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 18:36:31,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 18:36:31,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 18:36:31,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 18:36:31,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 18:36:31,644 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 18:36:31,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 18:36:31,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 18:36:31,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 18:36:31,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 18:36:31,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 18:36:31,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 18:36:31,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 18:36:31,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 18:36:31,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 18:36:31,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 18:36:31,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 18:36:31,648 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 18:36:31,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 18:36:31,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 18:36:31,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 18:36:31,648 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 18:36:31,649 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 18:36:31,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 18:36:31,649 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 18:36:31,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 18:36:31,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 18:36:31,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 18:36:31,917 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 18:36:31,917 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 18:36:31,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-03 18:36:33,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 18:36:33,401 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 18:36:33,402 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-03 18:36:33,418 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6444133/32cd07f139c8468284c04031538a43cf/FLAGe0e0b7800 [2024-06-03 18:36:33,430 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6444133/32cd07f139c8468284c04031538a43cf [2024-06-03 18:36:33,432 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 18:36:33,432 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 18:36:33,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi003_tso.yml/witness.yml [2024-06-03 18:36:33,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 18:36:33,579 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 18:36:33,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 18:36:33,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 18:36:33,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 18:36:33,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 06:36:33" (1/2) ... [2024-06-03 18:36:33,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75eaea20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:36:33, skipping insertion in model container [2024-06-03 18:36:33,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 06:36:33" (1/2) ... [2024-06-03 18:36:33,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@673f0c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:36:33, skipping insertion in model container [2024-06-03 18:36:33,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:36:33" (2/2) ... [2024-06-03 18:36:33,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75eaea20 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:33, skipping insertion in model container [2024-06-03 18:36:33,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:36:33" (2/2) ... [2024-06-03 18:36:33,590 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 18:36:33,657 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 18:36:33,658 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-03 18:36:33,659 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-03 18:36:33,659 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 18:36:33,659 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-03 18:36:33,718 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 18:36:34,164 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 18:36:34,181 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 18:36:34,309 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 18:36:34,352 INFO L206 MainTranslator]: Completed translation [2024-06-03 18:36:34,352 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34 WrapperNode [2024-06-03 18:36:34,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 18:36:34,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 18:36:34,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 18:36:34,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 18:36:34,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,417 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 177 [2024-06-03 18:36:34,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 18:36:34,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 18:36:34,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 18:36:34,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 18:36:34,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,460 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 18:36:34,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 18:36:34,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 18:36:34,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 18:36:34,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 18:36:34,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (1/1) ... [2024-06-03 18:36:34,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 18:36:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 18:36:34,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 18:36:34,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 18:36:34,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 18:36:34,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 18:36:34,570 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 18:36:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 18:36:34,571 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 18:36:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 18:36:34,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 18:36:34,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 18:36:34,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 18:36:34,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 18:36:34,573 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 18:36:34,720 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 18:36:34,722 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 18:36:35,183 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 18:36:35,184 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 18:36:35,380 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 18:36:35,380 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 18:36:35,384 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 06:36:35 BoogieIcfgContainer [2024-06-03 18:36:35,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 18:36:35,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 18:36:35,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 18:36:35,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 18:36:35,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 06:36:33" (1/4) ... [2024-06-03 18:36:35,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c34498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 06:36:35, skipping insertion in model container [2024-06-03 18:36:35,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:36:33" (2/4) ... [2024-06-03 18:36:35,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c34498 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 06:36:35, skipping insertion in model container [2024-06-03 18:36:35,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:34" (3/4) ... [2024-06-03 18:36:35,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c34498 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 06:36:35, skipping insertion in model container [2024-06-03 18:36:35,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 06:36:35" (4/4) ... [2024-06-03 18:36:35,399 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-06-03 18:36:35,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 18:36:35,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 18:36:35,417 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 18:36:35,467 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 18:36:35,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-03 18:36:35,541 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-03 18:36:35,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 18:36:35,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 18:36:35,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-03 18:36:35,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-03 18:36:35,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 18:36:35,571 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42b9051d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 18:36:35,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 18:36:35,576 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 18:36:35,576 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 18:36:35,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 18:36:35,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:35,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 18:36:35,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:35,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:35,583 INFO L85 PathProgramCache]: Analyzing trace with hash -175134480, now seen corresponding path program 1 times [2024-06-03 18:36:35,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:35,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133976759] [2024-06-03 18:36:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:35,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:36,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133976759] [2024-06-03 18:36:36,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133976759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:36,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:36,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 18:36:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387821277] [2024-06-03 18:36:36,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:36,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 18:36:36,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:36,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 18:36:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 18:36:36,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-03 18:36:36,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:36,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:36,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-03 18:36:36,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:36,967 INFO L124 PetriNetUnfolderBase]: 216/392 cut-off events. [2024-06-03 18:36:36,967 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-03 18:36:36,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 392 events. 216/392 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1458 event pairs, 133 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 781. Up to 378 conditions per place. [2024-06-03 18:36:36,975 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-03 18:36:36,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 127 flow [2024-06-03 18:36:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 18:36:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 18:36:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-06-03 18:36:36,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-03 18:36:36,990 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 51 transitions. [2024-06-03 18:36:36,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 127 flow [2024-06-03 18:36:36,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 18:36:36,996 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-03 18:36:36,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-03 18:36:37,001 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-03 18:36:37,002 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-03 18:36:37,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:37,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:37,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:37,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 18:36:37,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:37,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash -800495793, now seen corresponding path program 1 times [2024-06-03 18:36:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:37,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392134940] [2024-06-03 18:36:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:37,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:37,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392134940] [2024-06-03 18:36:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392134940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:37,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:37,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 18:36:37,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226834524] [2024-06-03 18:36:37,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:37,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 18:36:37,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:37,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 18:36:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 18:36:37,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-03 18:36:37,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:37,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:37,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-03 18:36:37,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:37,889 INFO L124 PetriNetUnfolderBase]: 207/377 cut-off events. [2024-06-03 18:36:37,890 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-06-03 18:36:37,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 377 events. 207/377 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 76 based on Foata normal form. 6/383 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2024-06-03 18:36:37,894 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 31 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-06-03 18:36:37,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 177 flow [2024-06-03 18:36:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 18:36:37,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 18:36:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-03 18:36:37,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 18:36:37,896 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 66 transitions. [2024-06-03 18:36:37,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 177 flow [2024-06-03 18:36:37,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 18:36:37,898 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-03 18:36:37,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-03 18:36:37,899 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-03 18:36:37,899 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-03 18:36:37,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:37,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:37,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:37,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 18:36:37,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:37,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1926644317, now seen corresponding path program 1 times [2024-06-03 18:36:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:37,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829895588] [2024-06-03 18:36:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:38,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:38,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829895588] [2024-06-03 18:36:38,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829895588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:38,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:38,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:36:38,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718051803] [2024-06-03 18:36:38,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:38,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:36:38,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:36:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:36:38,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:38,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:38,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:38,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:38,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:38,945 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-03 18:36:38,946 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-03 18:36:38,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 433 events. 243/433 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1576 event pairs, 144 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1075. Up to 421 conditions per place. [2024-06-03 18:36:38,952 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-03 18:36:38,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 185 flow [2024-06-03 18:36:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:36:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:36:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-03 18:36:38,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-03 18:36:38,956 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 58 transitions. [2024-06-03 18:36:38,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 185 flow [2024-06-03 18:36:38,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 18:36:38,959 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 117 flow [2024-06-03 18:36:38,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-03 18:36:38,960 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-03 18:36:38,960 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 117 flow [2024-06-03 18:36:38,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:38,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:38,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:38,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 18:36:38,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:38,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:38,963 INFO L85 PathProgramCache]: Analyzing trace with hash 881829901, now seen corresponding path program 1 times [2024-06-03 18:36:38,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:38,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138870409] [2024-06-03 18:36:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:38,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:40,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:40,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138870409] [2024-06-03 18:36:40,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138870409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:40,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:40,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:36:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590747379] [2024-06-03 18:36:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:40,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:36:40,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:36:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:36:40,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-03 18:36:40,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 117 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:40,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:40,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-03 18:36:40,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:41,012 INFO L124 PetriNetUnfolderBase]: 239/425 cut-off events. [2024-06-03 18:36:41,012 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2024-06-03 18:36:41,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 425 events. 239/425 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1491 event pairs, 79 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 1123. Up to 362 conditions per place. [2024-06-03 18:36:41,016 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 35 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-03 18:36:41,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 223 flow [2024-06-03 18:36:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:36:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:36:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-03 18:36:41,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-03 18:36:41,018 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 117 flow. Second operand 5 states and 71 transitions. [2024-06-03 18:36:41,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 223 flow [2024-06-03 18:36:41,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 212 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 18:36:41,021 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 116 flow [2024-06-03 18:36:41,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-03 18:36:41,022 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-06-03 18:36:41,022 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 116 flow [2024-06-03 18:36:41,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:41,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:41,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:41,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 18:36:41,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:41,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash 427699862, now seen corresponding path program 1 times [2024-06-03 18:36:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671802293] [2024-06-03 18:36:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:41,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:41,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:41,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671802293] [2024-06-03 18:36:41,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671802293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:41,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:41,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:36:41,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861680282] [2024-06-03 18:36:41,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:41,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:36:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:41,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:36:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:36:41,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:41,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:41,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:41,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:41,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:41,946 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-03 18:36:41,947 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-06-03 18:36:41,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 422 events. 237/422 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1531 event pairs, 141 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1176. Up to 407 conditions per place. [2024-06-03 18:36:41,950 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 28 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-03 18:36:41,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 210 flow [2024-06-03 18:36:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:36:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:36:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-03 18:36:41,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-03 18:36:41,954 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 116 flow. Second operand 6 states and 65 transitions. [2024-06-03 18:36:41,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 210 flow [2024-06-03 18:36:41,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 196 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 18:36:41,961 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 135 flow [2024-06-03 18:36:41,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-03 18:36:41,964 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-03 18:36:41,966 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 135 flow [2024-06-03 18:36:41,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:41,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:41,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:41,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 18:36:41,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:41,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1889463618, now seen corresponding path program 1 times [2024-06-03 18:36:41,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:41,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104538707] [2024-06-03 18:36:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:41,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:42,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:42,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104538707] [2024-06-03 18:36:42,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104538707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:42,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:42,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:36:42,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910542212] [2024-06-03 18:36:42,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:42,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:36:42,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:36:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:36:42,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:42,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:42,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:42,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:42,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:43,013 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-03 18:36:43,014 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-06-03 18:36:43,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 432 events. 243/432 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1527 event pairs, 82 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1272. Up to 385 conditions per place. [2024-06-03 18:36:43,017 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-03 18:36:43,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 283 flow [2024-06-03 18:36:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:36:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:36:43,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-03 18:36:43,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-03 18:36:43,018 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 135 flow. Second operand 6 states and 73 transitions. [2024-06-03 18:36:43,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 283 flow [2024-06-03 18:36:43,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 266 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 18:36:43,021 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 170 flow [2024-06-03 18:36:43,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-03 18:36:43,022 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-06-03 18:36:43,022 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 170 flow [2024-06-03 18:36:43,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:43,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:43,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:43,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 18:36:43,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:43,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash 398810212, now seen corresponding path program 2 times [2024-06-03 18:36:43,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:43,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071972653] [2024-06-03 18:36:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:43,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:43,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:43,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071972653] [2024-06-03 18:36:43,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071972653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:43,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:43,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:36:43,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688119934] [2024-06-03 18:36:43,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:43,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:36:43,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:43,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:36:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:36:43,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:43,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:43,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:43,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:43,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:43,970 INFO L124 PetriNetUnfolderBase]: 239/428 cut-off events. [2024-06-03 18:36:43,971 INFO L125 PetriNetUnfolderBase]: For 1102/1104 co-relation queries the response was YES. [2024-06-03 18:36:43,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 428 events. 239/428 cut-off events. For 1102/1104 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1523 event pairs, 88 based on Foata normal form. 4/432 useless extension candidates. Maximal degree in co-relation 1363. Up to 382 conditions per place. [2024-06-03 18:36:43,974 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 34 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2024-06-03 18:36:43,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 285 flow [2024-06-03 18:36:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:36:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:36:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-03 18:36:43,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-03 18:36:43,976 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 170 flow. Second operand 6 states and 70 transitions. [2024-06-03 18:36:43,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 285 flow [2024-06-03 18:36:43,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 275 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 18:36:43,979 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 192 flow [2024-06-03 18:36:43,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-06-03 18:36:43,980 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2024-06-03 18:36:43,980 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 192 flow [2024-06-03 18:36:43,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:43,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:43,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:43,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 18:36:43,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:43,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash 373794700, now seen corresponding path program 1 times [2024-06-03 18:36:43,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:43,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619188743] [2024-06-03 18:36:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:44,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:44,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619188743] [2024-06-03 18:36:44,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619188743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:44,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:44,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:36:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582392323] [2024-06-03 18:36:44,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:44,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:36:44,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:36:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:36:44,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:44,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 192 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:44,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:44,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:44,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:45,192 INFO L124 PetriNetUnfolderBase]: 237/423 cut-off events. [2024-06-03 18:36:45,193 INFO L125 PetriNetUnfolderBase]: For 1353/1353 co-relation queries the response was YES. [2024-06-03 18:36:45,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 423 events. 237/423 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1494 event pairs, 99 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1415. Up to 405 conditions per place. [2024-06-03 18:36:45,196 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 35 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-03 18:36:45,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 308 flow [2024-06-03 18:36:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:36:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:36:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-03 18:36:45,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31601731601731603 [2024-06-03 18:36:45,200 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 192 flow. Second operand 7 states and 73 transitions. [2024-06-03 18:36:45,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 308 flow [2024-06-03 18:36:45,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 293 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 18:36:45,204 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 216 flow [2024-06-03 18:36:45,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-06-03 18:36:45,206 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2024-06-03 18:36:45,206 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 216 flow [2024-06-03 18:36:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:45,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:45,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:45,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 18:36:45,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:45,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1304893771, now seen corresponding path program 1 times [2024-06-03 18:36:45,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:45,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202024217] [2024-06-03 18:36:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:45,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:45,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202024217] [2024-06-03 18:36:45,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202024217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:45,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:45,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:36:45,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166087698] [2024-06-03 18:36:45,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:45,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:36:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:45,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:36:45,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:36:46,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:46,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 216 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:46,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:46,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:46,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:46,300 INFO L124 PetriNetUnfolderBase]: 243/434 cut-off events. [2024-06-03 18:36:46,300 INFO L125 PetriNetUnfolderBase]: For 1763/1765 co-relation queries the response was YES. [2024-06-03 18:36:46,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 434 events. 243/434 cut-off events. For 1763/1765 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1543 event pairs, 85 based on Foata normal form. 4/438 useless extension candidates. Maximal degree in co-relation 1514. Up to 383 conditions per place. [2024-06-03 18:36:46,304 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 39 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2024-06-03 18:36:46,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 387 flow [2024-06-03 18:36:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:36:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:36:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-03 18:36:46,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-03 18:36:46,306 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 216 flow. Second operand 7 states and 80 transitions. [2024-06-03 18:36:46,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 387 flow [2024-06-03 18:36:46,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 364 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 18:36:46,312 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 283 flow [2024-06-03 18:36:46,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-03 18:36:46,313 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-03 18:36:46,313 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 283 flow [2024-06-03 18:36:46,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:46,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:46,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:46,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 18:36:46,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:46,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:46,315 INFO L85 PathProgramCache]: Analyzing trace with hash -521517571, now seen corresponding path program 2 times [2024-06-03 18:36:46,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:46,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652993183] [2024-06-03 18:36:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:46,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:47,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:47,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652993183] [2024-06-03 18:36:47,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652993183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:47,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:47,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:36:47,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454297357] [2024-06-03 18:36:47,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:47,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:36:47,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:47,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:36:47,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:36:47,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:47,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:47,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:47,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:47,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:47,498 INFO L124 PetriNetUnfolderBase]: 249/445 cut-off events. [2024-06-03 18:36:47,498 INFO L125 PetriNetUnfolderBase]: For 2282/2284 co-relation queries the response was YES. [2024-06-03 18:36:47,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 445 events. 249/445 cut-off events. For 2282/2284 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1605 event pairs, 81 based on Foata normal form. 4/449 useless extension candidates. Maximal degree in co-relation 1714. Up to 371 conditions per place. [2024-06-03 18:36:47,502 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 39 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2024-06-03 18:36:47,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 480 flow [2024-06-03 18:36:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:36:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:36:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-03 18:36:47,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-03 18:36:47,504 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 283 flow. Second operand 7 states and 81 transitions. [2024-06-03 18:36:47,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 480 flow [2024-06-03 18:36:47,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 464 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 18:36:47,508 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 342 flow [2024-06-03 18:36:47,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-03 18:36:47,510 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2024-06-03 18:36:47,510 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 342 flow [2024-06-03 18:36:47,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:47,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:47,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:47,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 18:36:47,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:47,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1297542121, now seen corresponding path program 3 times [2024-06-03 18:36:47,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:47,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953096677] [2024-06-03 18:36:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:47,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:48,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:48,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953096677] [2024-06-03 18:36:48,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953096677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:48,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:48,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:36:48,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659425425] [2024-06-03 18:36:48,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:48,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:36:48,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:48,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:36:48,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:36:48,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:48,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:48,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:48,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:48,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:48,561 INFO L124 PetriNetUnfolderBase]: 250/447 cut-off events. [2024-06-03 18:36:48,562 INFO L125 PetriNetUnfolderBase]: For 2818/2820 co-relation queries the response was YES. [2024-06-03 18:36:48,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 447 events. 250/447 cut-off events. For 2818/2820 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1609 event pairs, 86 based on Foata normal form. 4/451 useless extension candidates. Maximal degree in co-relation 1813. Up to 395 conditions per place. [2024-06-03 18:36:48,566 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 43 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-06-03 18:36:48,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 62 transitions, 505 flow [2024-06-03 18:36:48,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:36:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:36:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-03 18:36:48,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-03 18:36:48,568 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 342 flow. Second operand 7 states and 78 transitions. [2024-06-03 18:36:48,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 62 transitions, 505 flow [2024-06-03 18:36:48,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 476 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 18:36:48,573 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 382 flow [2024-06-03 18:36:48,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2024-06-03 18:36:48,574 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2024-06-03 18:36:48,574 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 382 flow [2024-06-03 18:36:48,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:48,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:48,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:48,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 18:36:48,575 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:48,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1297265291, now seen corresponding path program 1 times [2024-06-03 18:36:48,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:48,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407068673] [2024-06-03 18:36:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:48,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:50,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:50,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407068673] [2024-06-03 18:36:50,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407068673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:50,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:50,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:36:50,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466105169] [2024-06-03 18:36:50,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:50,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:36:50,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:50,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:36:50,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:36:50,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:50,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 382 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:50,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:50,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:50,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:50,587 INFO L124 PetriNetUnfolderBase]: 248/442 cut-off events. [2024-06-03 18:36:50,588 INFO L125 PetriNetUnfolderBase]: For 3074/3074 co-relation queries the response was YES. [2024-06-03 18:36:50,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 442 events. 248/442 cut-off events. For 3074/3074 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1580 event pairs, 77 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 1866. Up to 421 conditions per place. [2024-06-03 18:36:50,592 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2024-06-03 18:36:50,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 536 flow [2024-06-03 18:36:50,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:36:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:36:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 18:36:50,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-03 18:36:50,594 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 382 flow. Second operand 8 states and 81 transitions. [2024-06-03 18:36:50,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 536 flow [2024-06-03 18:36:50,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 513 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-03 18:36:50,601 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 404 flow [2024-06-03 18:36:50,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=404, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-06-03 18:36:50,602 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2024-06-03 18:36:50,602 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 404 flow [2024-06-03 18:36:50,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:50,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:50,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:50,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 18:36:50,604 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:50,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash 996471487, now seen corresponding path program 1 times [2024-06-03 18:36:50,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:50,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39406800] [2024-06-03 18:36:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:50,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:51,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:51,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39406800] [2024-06-03 18:36:51,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39406800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:51,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:51,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:36:51,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437579316] [2024-06-03 18:36:51,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:51,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:36:51,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:36:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:36:51,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:51,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 404 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:51,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:51,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:51,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:52,193 INFO L124 PetriNetUnfolderBase]: 254/452 cut-off events. [2024-06-03 18:36:52,194 INFO L125 PetriNetUnfolderBase]: For 3569/3569 co-relation queries the response was YES. [2024-06-03 18:36:52,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 452 events. 254/452 cut-off events. For 3569/3569 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1612 event pairs, 55 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 1959. Up to 399 conditions per place. [2024-06-03 18:36:52,199 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 60 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-06-03 18:36:52,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 592 flow [2024-06-03 18:36:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:36:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:36:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-03 18:36:52,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.354978354978355 [2024-06-03 18:36:52,200 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 404 flow. Second operand 7 states and 82 transitions. [2024-06-03 18:36:52,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 592 flow [2024-06-03 18:36:52,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 563 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 18:36:52,205 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 416 flow [2024-06-03 18:36:52,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=416, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-03 18:36:52,206 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-03 18:36:52,206 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 416 flow [2024-06-03 18:36:52,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:52,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:52,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:52,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 18:36:52,207 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:52,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:52,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1008512835, now seen corresponding path program 1 times [2024-06-03 18:36:52,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:52,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644352596] [2024-06-03 18:36:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:52,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:53,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:53,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644352596] [2024-06-03 18:36:53,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644352596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:53,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:53,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:36:53,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141170415] [2024-06-03 18:36:53,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:53,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:36:53,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:53,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:36:53,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:36:53,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:53,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 416 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:53,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:53,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:53,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:53,506 INFO L124 PetriNetUnfolderBase]: 257/457 cut-off events. [2024-06-03 18:36:53,506 INFO L125 PetriNetUnfolderBase]: For 4096/4096 co-relation queries the response was YES. [2024-06-03 18:36:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 457 events. 257/457 cut-off events. For 4096/4096 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1653 event pairs, 75 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2066. Up to 404 conditions per place. [2024-06-03 18:36:53,510 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 51 selfloop transitions, 18 changer transitions 0/71 dead transitions. [2024-06-03 18:36:53,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 602 flow [2024-06-03 18:36:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:36:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:36:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-03 18:36:53,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-03 18:36:53,511 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 416 flow. Second operand 7 states and 81 transitions. [2024-06-03 18:36:53,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 602 flow [2024-06-03 18:36:53,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 556 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 18:36:53,517 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 436 flow [2024-06-03 18:36:53,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-06-03 18:36:53,518 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-03 18:36:53,518 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 436 flow [2024-06-03 18:36:53,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:53,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:53,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:53,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 18:36:53,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:53,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:53,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1004044371, now seen corresponding path program 2 times [2024-06-03 18:36:53,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:53,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536496806] [2024-06-03 18:36:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:53,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:54,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:54,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536496806] [2024-06-03 18:36:54,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536496806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:54,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:54,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:36:54,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12160770] [2024-06-03 18:36:54,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:54,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:36:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:54,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:36:54,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:36:54,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:54,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 436 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:54,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:54,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:54,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:54,928 INFO L124 PetriNetUnfolderBase]: 263/467 cut-off events. [2024-06-03 18:36:54,929 INFO L125 PetriNetUnfolderBase]: For 4714/4714 co-relation queries the response was YES. [2024-06-03 18:36:54,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 467 events. 263/467 cut-off events. For 4714/4714 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1689 event pairs, 55 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2142. Up to 382 conditions per place. [2024-06-03 18:36:54,932 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 56 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2024-06-03 18:36:54,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 78 transitions, 676 flow [2024-06-03 18:36:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:36:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:36:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-03 18:36:54,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-03 18:36:54,934 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 436 flow. Second operand 7 states and 86 transitions. [2024-06-03 18:36:54,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 78 transitions, 676 flow [2024-06-03 18:36:54,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 640 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 18:36:54,944 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 477 flow [2024-06-03 18:36:54,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-03 18:36:54,945 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-03 18:36:54,946 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 477 flow [2024-06-03 18:36:54,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:54,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:54,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:54,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 18:36:54,946 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:54,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:54,947 INFO L85 PathProgramCache]: Analyzing trace with hash 996656061, now seen corresponding path program 1 times [2024-06-03 18:36:54,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:54,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341442969] [2024-06-03 18:36:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:54,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:55,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:55,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341442969] [2024-06-03 18:36:55,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341442969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:55,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:55,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:36:55,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133377130] [2024-06-03 18:36:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:55,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:36:55,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:36:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:36:55,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:55,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:55,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:55,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:55,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:56,262 INFO L124 PetriNetUnfolderBase]: 269/478 cut-off events. [2024-06-03 18:36:56,262 INFO L125 PetriNetUnfolderBase]: For 5473/5475 co-relation queries the response was YES. [2024-06-03 18:36:56,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2297 conditions, 478 events. 269/478 cut-off events. For 5473/5475 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1751 event pairs, 80 based on Foata normal form. 4/482 useless extension candidates. Maximal degree in co-relation 2260. Up to 419 conditions per place. [2024-06-03 18:36:56,266 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 57 selfloop transitions, 20 changer transitions 0/79 dead transitions. [2024-06-03 18:36:56,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 681 flow [2024-06-03 18:36:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:36:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:36:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 18:36:56,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3371212121212121 [2024-06-03 18:36:56,268 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 477 flow. Second operand 8 states and 89 transitions. [2024-06-03 18:36:56,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 681 flow [2024-06-03 18:36:56,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 657 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-03 18:36:56,275 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 514 flow [2024-06-03 18:36:56,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-03 18:36:56,275 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2024-06-03 18:36:56,276 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 514 flow [2024-06-03 18:36:56,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:56,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:56,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:56,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 18:36:56,278 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:56,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1004551139, now seen corresponding path program 2 times [2024-06-03 18:36:56,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:56,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318741584] [2024-06-03 18:36:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:56,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:57,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:57,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318741584] [2024-06-03 18:36:57,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318741584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:57,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:57,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:36:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251442968] [2024-06-03 18:36:57,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:57,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:36:57,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:57,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:36:57,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:36:57,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:57,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 514 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:57,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:57,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:57,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:57,515 INFO L124 PetriNetUnfolderBase]: 275/489 cut-off events. [2024-06-03 18:36:57,515 INFO L125 PetriNetUnfolderBase]: For 6160/6162 co-relation queries the response was YES. [2024-06-03 18:36:57,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 489 events. 275/489 cut-off events. For 6160/6162 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1794 event pairs, 83 based on Foata normal form. 4/493 useless extension candidates. Maximal degree in co-relation 2407. Up to 429 conditions per place. [2024-06-03 18:36:57,520 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 57 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-06-03 18:36:57,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 78 transitions, 712 flow [2024-06-03 18:36:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:36:57,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:36:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-03 18:36:57,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-03 18:36:57,521 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 514 flow. Second operand 8 states and 87 transitions. [2024-06-03 18:36:57,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 78 transitions, 712 flow [2024-06-03 18:36:57,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 667 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 18:36:57,530 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 532 flow [2024-06-03 18:36:57,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-03 18:36:57,531 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-03 18:36:57,532 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 532 flow [2024-06-03 18:36:57,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:57,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:57,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:57,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 18:36:57,534 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:57,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:57,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1560825011, now seen corresponding path program 3 times [2024-06-03 18:36:57,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:57,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700736134] [2024-06-03 18:36:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:57,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:58,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700736134] [2024-06-03 18:36:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700736134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:58,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:58,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:36:58,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486290890] [2024-06-03 18:36:58,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:58,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:36:58,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:36:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:36:58,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:58,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:58,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:58,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:58,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:58,876 INFO L124 PetriNetUnfolderBase]: 286/507 cut-off events. [2024-06-03 18:36:58,876 INFO L125 PetriNetUnfolderBase]: For 7100/7102 co-relation queries the response was YES. [2024-06-03 18:36:58,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 507 events. 286/507 cut-off events. For 7100/7102 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1875 event pairs, 82 based on Foata normal form. 4/511 useless extension candidates. Maximal degree in co-relation 2577. Up to 390 conditions per place. [2024-06-03 18:36:58,881 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 53 selfloop transitions, 32 changer transitions 0/87 dead transitions. [2024-06-03 18:36:58,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 870 flow [2024-06-03 18:36:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:36:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:36:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-03 18:36:58,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 18:36:58,882 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 532 flow. Second operand 8 states and 93 transitions. [2024-06-03 18:36:58,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 870 flow [2024-06-03 18:36:58,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 823 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 18:36:58,891 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 618 flow [2024-06-03 18:36:58,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=618, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-06-03 18:36:58,891 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2024-06-03 18:36:58,892 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 618 flow [2024-06-03 18:36:58,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:58,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:58,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 18:36:58,892 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:36:58,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1107418139, now seen corresponding path program 2 times [2024-06-03 18:36:58,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:58,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337856562] [2024-06-03 18:36:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:59,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:59,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337856562] [2024-06-03 18:36:59,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337856562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:59,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:59,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:36:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168174673] [2024-06-03 18:36:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:36:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:36:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:36:59,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:36:59,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 618 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:59,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:59,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:36:59,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:00,196 INFO L124 PetriNetUnfolderBase]: 284/504 cut-off events. [2024-06-03 18:37:00,196 INFO L125 PetriNetUnfolderBase]: For 7679/7681 co-relation queries the response was YES. [2024-06-03 18:37:00,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2683 conditions, 504 events. 284/504 cut-off events. For 7679/7681 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1873 event pairs, 86 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 2642. Up to 449 conditions per place. [2024-06-03 18:37:00,201 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 62 selfloop transitions, 18 changer transitions 0/82 dead transitions. [2024-06-03 18:37:00,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 800 flow [2024-06-03 18:37:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 18:37:00,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-03 18:37:00,202 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 618 flow. Second operand 7 states and 79 transitions. [2024-06-03 18:37:00,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 800 flow [2024-06-03 18:37:00,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 763 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-03 18:37:00,213 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 625 flow [2024-06-03 18:37:00,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=625, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2024-06-03 18:37:00,214 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2024-06-03 18:37:00,214 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 625 flow [2024-06-03 18:37:00,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:00,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:00,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:00,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 18:37:00,215 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:00,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1115995777, now seen corresponding path program 4 times [2024-06-03 18:37:00,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:00,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826844719] [2024-06-03 18:37:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:01,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:01,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826844719] [2024-06-03 18:37:01,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826844719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:01,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:01,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:37:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865229854] [2024-06-03 18:37:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:01,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:37:01,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:37:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:37:01,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:01,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:01,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:01,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:01,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:01,321 INFO L124 PetriNetUnfolderBase]: 280/496 cut-off events. [2024-06-03 18:37:01,322 INFO L125 PetriNetUnfolderBase]: For 8168/8168 co-relation queries the response was YES. [2024-06-03 18:37:01,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 496 events. 280/496 cut-off events. For 8168/8168 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1825 event pairs, 79 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2630. Up to 472 conditions per place. [2024-06-03 18:37:01,326 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-03 18:37:01,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 811 flow [2024-06-03 18:37:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:01,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-03 18:37:01,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-03 18:37:01,328 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 625 flow. Second operand 8 states and 82 transitions. [2024-06-03 18:37:01,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 811 flow [2024-06-03 18:37:01,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 742 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:01,339 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 585 flow [2024-06-03 18:37:01,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=585, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-03 18:37:01,340 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-03 18:37:01,340 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 585 flow [2024-06-03 18:37:01,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:01,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:01,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:01,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 18:37:01,341 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:01,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:01,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1107417953, now seen corresponding path program 3 times [2024-06-03 18:37:01,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:01,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913551138] [2024-06-03 18:37:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:01,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:02,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:02,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913551138] [2024-06-03 18:37:02,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913551138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:02,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:02,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:37:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669168725] [2024-06-03 18:37:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:02,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:37:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:37:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:37:02,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:02,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 585 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:02,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:02,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:02,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:02,561 INFO L124 PetriNetUnfolderBase]: 276/492 cut-off events. [2024-06-03 18:37:02,561 INFO L125 PetriNetUnfolderBase]: For 7772/7774 co-relation queries the response was YES. [2024-06-03 18:37:02,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 492 events. 276/492 cut-off events. For 7772/7774 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1818 event pairs, 74 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2531. Up to 408 conditions per place. [2024-06-03 18:37:02,565 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 62 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-03 18:37:02,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 771 flow [2024-06-03 18:37:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-03 18:37:02,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-03 18:37:02,567 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 585 flow. Second operand 7 states and 83 transitions. [2024-06-03 18:37:02,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 771 flow [2024-06-03 18:37:02,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 736 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:02,578 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 595 flow [2024-06-03 18:37:02,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=595, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-03 18:37:02,579 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-03 18:37:02,579 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 595 flow [2024-06-03 18:37:02,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:02,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:02,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:02,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 18:37:02,580 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:02,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1116006689, now seen corresponding path program 1 times [2024-06-03 18:37:02,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:02,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448992854] [2024-06-03 18:37:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:04,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:04,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448992854] [2024-06-03 18:37:04,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448992854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:04,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:04,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:37:04,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630840935] [2024-06-03 18:37:04,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:04,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:37:04,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:04,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:37:04,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:37:04,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:04,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:04,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:04,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:04,678 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-03 18:37:04,678 INFO L125 PetriNetUnfolderBase]: For 8078/8078 co-relation queries the response was YES. [2024-06-03 18:37:04,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 487 events. 274/487 cut-off events. For 8078/8078 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1802 event pairs, 77 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 2550. Up to 463 conditions per place. [2024-06-03 18:37:04,681 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-03 18:37:04,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 84 transitions, 791 flow [2024-06-03 18:37:04,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-03 18:37:04,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-03 18:37:04,682 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 595 flow. Second operand 8 states and 82 transitions. [2024-06-03 18:37:04,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 84 transitions, 791 flow [2024-06-03 18:37:04,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 84 transitions, 740 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:04,692 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 594 flow [2024-06-03 18:37:04,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-06-03 18:37:04,692 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 61 predicate places. [2024-06-03 18:37:04,692 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 594 flow [2024-06-03 18:37:04,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:04,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:04,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 18:37:04,693 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:04,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:04,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1202850814, now seen corresponding path program 1 times [2024-06-03 18:37:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:04,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241705453] [2024-06-03 18:37:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:04,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:05,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241705453] [2024-06-03 18:37:05,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241705453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:05,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:05,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:05,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529046770] [2024-06-03 18:37:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:05,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:05,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:05,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:05,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:05,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:05,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:05,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:05,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:05,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:05,845 INFO L124 PetriNetUnfolderBase]: 283/502 cut-off events. [2024-06-03 18:37:05,845 INFO L125 PetriNetUnfolderBase]: For 8828/8828 co-relation queries the response was YES. [2024-06-03 18:37:05,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 502 events. 283/502 cut-off events. For 8828/8828 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1854 event pairs, 55 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2640. Up to 443 conditions per place. [2024-06-03 18:37:05,849 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 81 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-03 18:37:05,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 850 flow [2024-06-03 18:37:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-03 18:37:05,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-03 18:37:05,850 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 594 flow. Second operand 8 states and 91 transitions. [2024-06-03 18:37:05,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 850 flow [2024-06-03 18:37:05,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 820 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:05,861 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 639 flow [2024-06-03 18:37:05,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=639, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-06-03 18:37:05,861 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-06-03 18:37:05,861 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 639 flow [2024-06-03 18:37:05,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:05,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:05,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:05,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 18:37:05,862 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:05,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:05,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1199131744, now seen corresponding path program 2 times [2024-06-03 18:37:05,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:05,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308871562] [2024-06-03 18:37:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:05,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:06,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:06,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308871562] [2024-06-03 18:37:06,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308871562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:06,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:06,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:06,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111628742] [2024-06-03 18:37:06,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:06,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:06,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:06,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:06,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 639 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:06,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:06,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:06,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:07,056 INFO L124 PetriNetUnfolderBase]: 289/512 cut-off events. [2024-06-03 18:37:07,057 INFO L125 PetriNetUnfolderBase]: For 9675/9675 co-relation queries the response was YES. [2024-06-03 18:37:07,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 512 events. 289/512 cut-off events. For 9675/9675 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1907 event pairs, 56 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 2808. Up to 421 conditions per place. [2024-06-03 18:37:07,062 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 24 changer transitions 0/97 dead transitions. [2024-06-03 18:37:07,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 887 flow [2024-06-03 18:37:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 18:37:07,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-03 18:37:07,065 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 639 flow. Second operand 8 states and 94 transitions. [2024-06-03 18:37:07,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 887 flow [2024-06-03 18:37:07,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 854 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-03 18:37:07,078 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 683 flow [2024-06-03 18:37:07,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-06-03 18:37:07,079 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-03 18:37:07,079 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 683 flow [2024-06-03 18:37:07,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:07,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:07,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:07,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 18:37:07,080 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:07,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash 687467440, now seen corresponding path program 3 times [2024-06-03 18:37:07,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:07,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198019963] [2024-06-03 18:37:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:07,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:07,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198019963] [2024-06-03 18:37:07,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198019963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:07,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:07,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202240877] [2024-06-03 18:37:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:07,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:07,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:07,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:07,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 683 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:07,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:07,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:07,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:08,278 INFO L124 PetriNetUnfolderBase]: 300/530 cut-off events. [2024-06-03 18:37:08,278 INFO L125 PetriNetUnfolderBase]: For 11074/11074 co-relation queries the response was YES. [2024-06-03 18:37:08,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3062 conditions, 530 events. 300/530 cut-off events. For 11074/11074 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2005 event pairs, 54 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3013. Up to 410 conditions per place. [2024-06-03 18:37:08,282 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 33 changer transitions 0/104 dead transitions. [2024-06-03 18:37:08,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 1031 flow [2024-06-03 18:37:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 18:37:08,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-03 18:37:08,286 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 683 flow. Second operand 8 states and 97 transitions. [2024-06-03 18:37:08,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 1031 flow [2024-06-03 18:37:08,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 104 transitions, 970 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:08,302 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 746 flow [2024-06-03 18:37:08,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=746, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2024-06-03 18:37:08,302 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 69 predicate places. [2024-06-03 18:37:08,302 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 746 flow [2024-06-03 18:37:08,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:08,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:08,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:08,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 18:37:08,303 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:08,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 687467657, now seen corresponding path program 1 times [2024-06-03 18:37:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635436689] [2024-06-03 18:37:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:08,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:09,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:09,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635436689] [2024-06-03 18:37:09,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635436689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:09,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:09,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:09,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797913106] [2024-06-03 18:37:09,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:09,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:09,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:09,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:09,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:09,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:09,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 746 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:09,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:09,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:09,842 INFO L124 PetriNetUnfolderBase]: 303/535 cut-off events. [2024-06-03 18:37:09,842 INFO L125 PetriNetUnfolderBase]: For 11855/11855 co-relation queries the response was YES. [2024-06-03 18:37:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 535 events. 303/535 cut-off events. For 11855/11855 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2032 event pairs, 75 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 3121. Up to 471 conditions per place. [2024-06-03 18:37:09,847 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 78 selfloop transitions, 22 changer transitions 0/102 dead transitions. [2024-06-03 18:37:09,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 1006 flow [2024-06-03 18:37:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-03 18:37:09,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 18:37:09,848 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 746 flow. Second operand 8 states and 90 transitions. [2024-06-03 18:37:09,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 1006 flow [2024-06-03 18:37:09,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 957 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-03 18:37:09,862 INFO L231 Difference]: Finished difference. Result has 105 places, 89 transitions, 775 flow [2024-06-03 18:37:09,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=775, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2024-06-03 18:37:09,862 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2024-06-03 18:37:09,863 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 775 flow [2024-06-03 18:37:09,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:09,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:09,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 18:37:09,863 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:09,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:09,863 INFO L85 PathProgramCache]: Analyzing trace with hash 831567716, now seen corresponding path program 1 times [2024-06-03 18:37:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953383031] [2024-06-03 18:37:09,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:09,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:11,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953383031] [2024-06-03 18:37:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953383031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:11,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:11,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:11,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885323303] [2024-06-03 18:37:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:11,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:11,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:11,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:11,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:11,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:11,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:11,623 INFO L124 PetriNetUnfolderBase]: 309/546 cut-off events. [2024-06-03 18:37:11,624 INFO L125 PetriNetUnfolderBase]: For 13019/13021 co-relation queries the response was YES. [2024-06-03 18:37:11,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3270 conditions, 546 events. 309/546 cut-off events. For 13019/13021 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2085 event pairs, 78 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 3218. Up to 479 conditions per place. [2024-06-03 18:37:11,628 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 82 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2024-06-03 18:37:11,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 1047 flow [2024-06-03 18:37:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:11,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 18:37:11,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-03 18:37:11,629 INFO L175 Difference]: Start difference. First operand has 105 places, 89 transitions, 775 flow. Second operand 9 states and 98 transitions. [2024-06-03 18:37:11,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 1047 flow [2024-06-03 18:37:11,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 106 transitions, 999 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:11,648 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 798 flow [2024-06-03 18:37:11,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=798, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2024-06-03 18:37:11,649 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-03 18:37:11,649 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 798 flow [2024-06-03 18:37:11,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:11,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:11,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:11,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 18:37:11,650 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:11,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1342338844, now seen corresponding path program 2 times [2024-06-03 18:37:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:11,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116702736] [2024-06-03 18:37:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:11,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:12,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:12,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116702736] [2024-06-03 18:37:12,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116702736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:12,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:12,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:12,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055095649] [2024-06-03 18:37:12,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:12,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:12,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:12,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:12,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:12,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 798 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:12,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:12,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:12,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:12,982 INFO L124 PetriNetUnfolderBase]: 331/581 cut-off events. [2024-06-03 18:37:12,983 INFO L125 PetriNetUnfolderBase]: For 15340/15340 co-relation queries the response was YES. [2024-06-03 18:37:12,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3550 conditions, 581 events. 331/581 cut-off events. For 15340/15340 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2250 event pairs, 75 based on Foata normal form. 4/585 useless extension candidates. Maximal degree in co-relation 3497. Up to 534 conditions per place. [2024-06-03 18:37:12,988 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 88 selfloop transitions, 18 changer transitions 0/108 dead transitions. [2024-06-03 18:37:12,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 108 transitions, 1142 flow [2024-06-03 18:37:12,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:12,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-03 18:37:12,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31986531986531985 [2024-06-03 18:37:12,990 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 798 flow. Second operand 9 states and 95 transitions. [2024-06-03 18:37:12,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 108 transitions, 1142 flow [2024-06-03 18:37:13,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 1087 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:13,013 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 838 flow [2024-06-03 18:37:13,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2024-06-03 18:37:13,014 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 78 predicate places. [2024-06-03 18:37:13,014 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 838 flow [2024-06-03 18:37:13,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:13,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:13,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:13,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 18:37:13,015 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:13,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash -29573600, now seen corresponding path program 4 times [2024-06-03 18:37:13,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:13,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546268153] [2024-06-03 18:37:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:13,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:13,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546268153] [2024-06-03 18:37:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546268153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:13,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:13,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:13,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110846650] [2024-06-03 18:37:13,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:13,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:13,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:13,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:13,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:13,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 838 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:13,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:13,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:13,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:14,253 INFO L124 PetriNetUnfolderBase]: 337/593 cut-off events. [2024-06-03 18:37:14,253 INFO L125 PetriNetUnfolderBase]: For 15915/15917 co-relation queries the response was YES. [2024-06-03 18:37:14,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 593 events. 337/593 cut-off events. For 15915/15917 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2310 event pairs, 73 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3636. Up to 496 conditions per place. [2024-06-03 18:37:14,257 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 82 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-03 18:37:14,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 110 transitions, 1118 flow [2024-06-03 18:37:14,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-03 18:37:14,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-03 18:37:14,258 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 838 flow. Second operand 8 states and 91 transitions. [2024-06-03 18:37:14,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 110 transitions, 1118 flow [2024-06-03 18:37:14,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 110 transitions, 1078 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-03 18:37:14,275 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 887 flow [2024-06-03 18:37:14,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=887, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-06-03 18:37:14,278 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 81 predicate places. [2024-06-03 18:37:14,278 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 887 flow [2024-06-03 18:37:14,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:14,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:14,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:14,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 18:37:14,279 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:14,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:14,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1140942124, now seen corresponding path program 5 times [2024-06-03 18:37:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923733041] [2024-06-03 18:37:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:14,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:15,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:15,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923733041] [2024-06-03 18:37:15,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923733041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:15,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:15,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:15,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040184757] [2024-06-03 18:37:15,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:15,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:15,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:15,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:15,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:15,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:15,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 887 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:15,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:15,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:15,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:15,449 INFO L124 PetriNetUnfolderBase]: 343/603 cut-off events. [2024-06-03 18:37:15,449 INFO L125 PetriNetUnfolderBase]: For 17273/17275 co-relation queries the response was YES. [2024-06-03 18:37:15,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3840 conditions, 603 events. 343/603 cut-off events. For 17273/17275 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2369 event pairs, 67 based on Foata normal form. 2/605 useless extension candidates. Maximal degree in co-relation 3784. Up to 438 conditions per place. [2024-06-03 18:37:15,454 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 73 selfloop transitions, 42 changer transitions 0/117 dead transitions. [2024-06-03 18:37:15,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 1285 flow [2024-06-03 18:37:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-03 18:37:15,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:37:15,455 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 887 flow. Second operand 8 states and 96 transitions. [2024-06-03 18:37:15,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 1285 flow [2024-06-03 18:37:15,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 117 transitions, 1212 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:15,472 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 971 flow [2024-06-03 18:37:15,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-06-03 18:37:15,472 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-03 18:37:15,473 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 971 flow [2024-06-03 18:37:15,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:15,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:15,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:15,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 18:37:15,473 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:15,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:15,474 INFO L85 PathProgramCache]: Analyzing trace with hash 236131616, now seen corresponding path program 3 times [2024-06-03 18:37:15,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:15,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487710709] [2024-06-03 18:37:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:15,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:16,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:16,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487710709] [2024-06-03 18:37:16,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487710709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:16,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:16,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:16,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380641303] [2024-06-03 18:37:16,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:16,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:16,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:16,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:16,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:16,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:16,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:16,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:16,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:16,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:16,921 INFO L124 PetriNetUnfolderBase]: 359/627 cut-off events. [2024-06-03 18:37:16,922 INFO L125 PetriNetUnfolderBase]: For 19344/19344 co-relation queries the response was YES. [2024-06-03 18:37:16,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4107 conditions, 627 events. 359/627 cut-off events. For 19344/19344 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2484 event pairs, 75 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 4050. Up to 555 conditions per place. [2024-06-03 18:37:16,927 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 94 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2024-06-03 18:37:16,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 1353 flow [2024-06-03 18:37:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 18:37:16,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-03 18:37:16,929 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 971 flow. Second operand 9 states and 98 transitions. [2024-06-03 18:37:16,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 1353 flow [2024-06-03 18:37:16,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 1291 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-03 18:37:16,952 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 1027 flow [2024-06-03 18:37:16,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1027, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-06-03 18:37:16,953 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 89 predicate places. [2024-06-03 18:37:16,953 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 1027 flow [2024-06-03 18:37:16,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:16,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:16,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:16,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 18:37:16,954 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:16,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1140934188, now seen corresponding path program 4 times [2024-06-03 18:37:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:16,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056804463] [2024-06-03 18:37:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:18,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:18,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056804463] [2024-06-03 18:37:18,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056804463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:18,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:18,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891479862] [2024-06-03 18:37:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:18,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:18,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:18,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:18,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:18,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 1027 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:18,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:18,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:18,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:18,965 INFO L124 PetriNetUnfolderBase]: 365/639 cut-off events. [2024-06-03 18:37:18,965 INFO L125 PetriNetUnfolderBase]: For 20646/20648 co-relation queries the response was YES. [2024-06-03 18:37:18,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4279 conditions, 639 events. 365/639 cut-off events. For 20646/20648 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2573 event pairs, 81 based on Foata normal form. 4/643 useless extension candidates. Maximal degree in co-relation 4219. Up to 425 conditions per place. [2024-06-03 18:37:18,971 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 78 selfloop transitions, 45 changer transitions 0/125 dead transitions. [2024-06-03 18:37:18,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 1447 flow [2024-06-03 18:37:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 18:37:18,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-03 18:37:18,973 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 1027 flow. Second operand 9 states and 105 transitions. [2024-06-03 18:37:18,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 1447 flow [2024-06-03 18:37:18,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 1402 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-03 18:37:18,999 INFO L231 Difference]: Finished difference. Result has 126 places, 110 transitions, 1170 flow [2024-06-03 18:37:19,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=126, PETRI_TRANSITIONS=110} [2024-06-03 18:37:19,000 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-06-03 18:37:19,000 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 110 transitions, 1170 flow [2024-06-03 18:37:19,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:19,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:19,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:19,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 18:37:19,001 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:19,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:19,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1397644227, now seen corresponding path program 2 times [2024-06-03 18:37:19,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:19,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509980499] [2024-06-03 18:37:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:19,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:19,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:19,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509980499] [2024-06-03 18:37:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509980499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:19,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:19,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236122360] [2024-06-03 18:37:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:19,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:19,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:19,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:19,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 110 transitions, 1170 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:19,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:19,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:19,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:20,325 INFO L124 PetriNetUnfolderBase]: 363/636 cut-off events. [2024-06-03 18:37:20,325 INFO L125 PetriNetUnfolderBase]: For 21167/21169 co-relation queries the response was YES. [2024-06-03 18:37:20,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4455 conditions, 636 events. 363/636 cut-off events. For 21167/21169 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2551 event pairs, 91 based on Foata normal form. 3/639 useless extension candidates. Maximal degree in co-relation 4392. Up to 570 conditions per place. [2024-06-03 18:37:20,330 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 96 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2024-06-03 18:37:20,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 120 transitions, 1436 flow [2024-06-03 18:37:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 18:37:20,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:37:20,331 INFO L175 Difference]: Start difference. First operand has 126 places, 110 transitions, 1170 flow. Second operand 8 states and 88 transitions. [2024-06-03 18:37:20,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 120 transitions, 1436 flow [2024-06-03 18:37:20,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 120 transitions, 1373 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-03 18:37:20,368 INFO L231 Difference]: Finished difference. Result has 129 places, 110 transitions, 1159 flow [2024-06-03 18:37:20,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1159, PETRI_PLACES=129, PETRI_TRANSITIONS=110} [2024-06-03 18:37:20,369 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2024-06-03 18:37:20,369 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 110 transitions, 1159 flow [2024-06-03 18:37:20,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:20,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:20,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:20,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 18:37:20,370 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:20,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1397644444, now seen corresponding path program 6 times [2024-06-03 18:37:20,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:20,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685688013] [2024-06-03 18:37:20,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:20,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:21,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:21,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685688013] [2024-06-03 18:37:21,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685688013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:21,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:21,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:21,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869515914] [2024-06-03 18:37:21,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:21,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:21,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:21,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:21,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:21,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 110 transitions, 1159 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:21,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:21,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:21,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:21,605 INFO L124 PetriNetUnfolderBase]: 369/646 cut-off events. [2024-06-03 18:37:21,605 INFO L125 PetriNetUnfolderBase]: For 22767/22769 co-relation queries the response was YES. [2024-06-03 18:37:21,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 646 events. 369/646 cut-off events. For 22767/22769 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2604 event pairs, 79 based on Foata normal form. 2/648 useless extension candidates. Maximal degree in co-relation 4482. Up to 529 conditions per place. [2024-06-03 18:37:21,610 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 94 selfloop transitions, 31 changer transitions 0/127 dead transitions. [2024-06-03 18:37:21,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 1553 flow [2024-06-03 18:37:21,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:21,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 18:37:21,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-03 18:37:21,612 INFO L175 Difference]: Start difference. First operand has 129 places, 110 transitions, 1159 flow. Second operand 8 states and 97 transitions. [2024-06-03 18:37:21,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 1553 flow [2024-06-03 18:37:21,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1481 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:21,651 INFO L231 Difference]: Finished difference. Result has 130 places, 112 transitions, 1191 flow [2024-06-03 18:37:21,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1191, PETRI_PLACES=130, PETRI_TRANSITIONS=112} [2024-06-03 18:37:21,652 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-03 18:37:21,652 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 112 transitions, 1191 flow [2024-06-03 18:37:21,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:21,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:21,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:21,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 18:37:21,653 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:21,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:21,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1883571684, now seen corresponding path program 7 times [2024-06-03 18:37:21,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:21,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067640800] [2024-06-03 18:37:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:21,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:22,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067640800] [2024-06-03 18:37:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067640800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:22,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:22,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914821500] [2024-06-03 18:37:22,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:22,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:22,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:22,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:22,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 112 transitions, 1191 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:22,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:22,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:22,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:22,980 INFO L124 PetriNetUnfolderBase]: 365/640 cut-off events. [2024-06-03 18:37:22,980 INFO L125 PetriNetUnfolderBase]: For 22967/22969 co-relation queries the response was YES. [2024-06-03 18:37:22,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4511 conditions, 640 events. 365/640 cut-off events. For 22967/22969 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2584 event pairs, 81 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 4445. Up to 547 conditions per place. [2024-06-03 18:37:22,986 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 98 selfloop transitions, 24 changer transitions 0/124 dead transitions. [2024-06-03 18:37:22,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 1469 flow [2024-06-03 18:37:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-03 18:37:22,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-03 18:37:22,988 INFO L175 Difference]: Start difference. First operand has 130 places, 112 transitions, 1191 flow. Second operand 8 states and 92 transitions. [2024-06-03 18:37:22,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 1469 flow [2024-06-03 18:37:23,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 124 transitions, 1327 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:23,028 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 1102 flow [2024-06-03 18:37:23,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1102, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2024-06-03 18:37:23,028 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 99 predicate places. [2024-06-03 18:37:23,028 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 1102 flow [2024-06-03 18:37:23,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:23,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:23,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:23,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 18:37:23,029 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:23,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1883787010, now seen corresponding path program 5 times [2024-06-03 18:37:23,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:23,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568892529] [2024-06-03 18:37:23,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:23,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:24,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:24,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568892529] [2024-06-03 18:37:24,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568892529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:24,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:24,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333694532] [2024-06-03 18:37:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:24,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:24,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:24,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:24,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:24,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:24,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:24,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:24,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:24,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:24,695 INFO L124 PetriNetUnfolderBase]: 366/642 cut-off events. [2024-06-03 18:37:24,695 INFO L125 PetriNetUnfolderBase]: For 23440/23442 co-relation queries the response was YES. [2024-06-03 18:37:24,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 642 events. 366/642 cut-off events. For 23440/23442 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2585 event pairs, 92 based on Foata normal form. 4/646 useless extension candidates. Maximal degree in co-relation 4328. Up to 574 conditions per place. [2024-06-03 18:37:24,699 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 103 selfloop transitions, 21 changer transitions 0/126 dead transitions. [2024-06-03 18:37:24,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 126 transitions, 1421 flow [2024-06-03 18:37:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:24,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 18:37:24,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-03 18:37:24,714 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 1102 flow. Second operand 9 states and 96 transitions. [2024-06-03 18:37:24,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 126 transitions, 1421 flow [2024-06-03 18:37:24,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 126 transitions, 1365 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:24,760 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 1130 flow [2024-06-03 18:37:24,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2024-06-03 18:37:24,760 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-03 18:37:24,761 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 1130 flow [2024-06-03 18:37:24,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:24,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:24,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:24,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 18:37:24,761 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:24,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:24,762 INFO L85 PathProgramCache]: Analyzing trace with hash 236469950, now seen corresponding path program 1 times [2024-06-03 18:37:24,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:24,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044237528] [2024-06-03 18:37:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:24,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:26,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:26,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044237528] [2024-06-03 18:37:26,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044237528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:26,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:26,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:26,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660837580] [2024-06-03 18:37:26,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:26,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:26,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:26,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:26,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:26,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 1130 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:26,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:26,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:26,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:26,846 INFO L124 PetriNetUnfolderBase]: 363/635 cut-off events. [2024-06-03 18:37:26,846 INFO L125 PetriNetUnfolderBase]: For 23496/23496 co-relation queries the response was YES. [2024-06-03 18:37:26,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4348 conditions, 635 events. 363/635 cut-off events. For 23496/23496 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2532 event pairs, 87 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4281. Up to 605 conditions per place. [2024-06-03 18:37:26,852 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 108 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2024-06-03 18:37:26,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 1396 flow [2024-06-03 18:37:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-03 18:37:26,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2996632996632997 [2024-06-03 18:37:26,854 INFO L175 Difference]: Start difference. First operand has 133 places, 114 transitions, 1130 flow. Second operand 9 states and 89 transitions. [2024-06-03 18:37:26,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 1396 flow [2024-06-03 18:37:26,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 124 transitions, 1331 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:26,880 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 1097 flow [2024-06-03 18:37:26,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1097, PETRI_PLACES=135, PETRI_TRANSITIONS=114} [2024-06-03 18:37:26,881 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-03 18:37:26,881 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 1097 flow [2024-06-03 18:37:26,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:26,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:26,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:26,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 18:37:26,881 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:26,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1363469376, now seen corresponding path program 1 times [2024-06-03 18:37:26,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:26,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188251226] [2024-06-03 18:37:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:26,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:27,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:27,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188251226] [2024-06-03 18:37:27,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188251226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:27,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:27,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:27,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269749465] [2024-06-03 18:37:27,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:27,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:27,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:27,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:27,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:27,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:27,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 114 transitions, 1097 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:27,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:27,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:27,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:28,236 INFO L124 PetriNetUnfolderBase]: 374/656 cut-off events. [2024-06-03 18:37:28,237 INFO L125 PetriNetUnfolderBase]: For 26057/26057 co-relation queries the response was YES. [2024-06-03 18:37:28,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 656 events. 374/656 cut-off events. For 26057/26057 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2688 event pairs, 49 based on Foata normal form. 2/658 useless extension candidates. Maximal degree in co-relation 4425. Up to 565 conditions per place. [2024-06-03 18:37:28,240 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 117 selfloop transitions, 16 changer transitions 0/135 dead transitions. [2024-06-03 18:37:28,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 1501 flow [2024-06-03 18:37:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 18:37:28,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:37:28,241 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 1097 flow. Second operand 9 states and 99 transitions. [2024-06-03 18:37:28,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 1501 flow [2024-06-03 18:37:28,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 1463 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:28,285 INFO L231 Difference]: Finished difference. Result has 137 places, 116 transitions, 1117 flow [2024-06-03 18:37:28,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1117, PETRI_PLACES=137, PETRI_TRANSITIONS=116} [2024-06-03 18:37:28,285 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-03 18:37:28,285 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 116 transitions, 1117 flow [2024-06-03 18:37:28,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:28,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:28,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:28,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 18:37:28,286 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:28,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1063705588, now seen corresponding path program 2 times [2024-06-03 18:37:28,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:28,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108637165] [2024-06-03 18:37:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:29,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:29,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108637165] [2024-06-03 18:37:29,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108637165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:29,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:29,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:29,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098984442] [2024-06-03 18:37:29,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:29,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:29,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:29,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:29,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:29,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 116 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:29,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:29,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:29,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:29,735 INFO L124 PetriNetUnfolderBase]: 371/651 cut-off events. [2024-06-03 18:37:29,736 INFO L125 PetriNetUnfolderBase]: For 26026/26026 co-relation queries the response was YES. [2024-06-03 18:37:29,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4446 conditions, 651 events. 371/651 cut-off events. For 26026/26026 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2648 event pairs, 68 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4377. Up to 589 conditions per place. [2024-06-03 18:37:29,739 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 116 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2024-06-03 18:37:29,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 1417 flow [2024-06-03 18:37:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-03 18:37:29,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 18:37:29,741 INFO L175 Difference]: Start difference. First operand has 137 places, 116 transitions, 1117 flow. Second operand 8 states and 90 transitions. [2024-06-03 18:37:29,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 1417 flow [2024-06-03 18:37:29,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 132 transitions, 1384 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-03 18:37:29,780 INFO L231 Difference]: Finished difference. Result has 140 places, 116 transitions, 1117 flow [2024-06-03 18:37:29,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1117, PETRI_PLACES=140, PETRI_TRANSITIONS=116} [2024-06-03 18:37:29,780 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-03 18:37:29,780 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 116 transitions, 1117 flow [2024-06-03 18:37:29,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:29,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:29,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:29,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 18:37:29,781 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:29,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:29,782 INFO L85 PathProgramCache]: Analyzing trace with hash -278813960, now seen corresponding path program 1 times [2024-06-03 18:37:29,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640322967] [2024-06-03 18:37:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:29,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:30,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:30,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640322967] [2024-06-03 18:37:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640322967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:30,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:30,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:37:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604351237] [2024-06-03 18:37:30,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:30,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:37:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:30,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:37:30,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:37:30,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:30,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 116 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:30,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:30,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:30,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:31,016 INFO L124 PetriNetUnfolderBase]: 369/648 cut-off events. [2024-06-03 18:37:31,016 INFO L125 PetriNetUnfolderBase]: For 26044/26044 co-relation queries the response was YES. [2024-06-03 18:37:31,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4426 conditions, 648 events. 369/648 cut-off events. For 26044/26044 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2636 event pairs, 68 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 4355. Up to 583 conditions per place. [2024-06-03 18:37:31,020 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 113 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2024-06-03 18:37:31,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 1419 flow [2024-06-03 18:37:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-03 18:37:31,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-03 18:37:31,021 INFO L175 Difference]: Start difference. First operand has 140 places, 116 transitions, 1117 flow. Second operand 8 states and 91 transitions. [2024-06-03 18:37:31,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 1419 flow [2024-06-03 18:37:31,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 1383 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:31,053 INFO L231 Difference]: Finished difference. Result has 141 places, 116 transitions, 1123 flow [2024-06-03 18:37:31,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1123, PETRI_PLACES=141, PETRI_TRANSITIONS=116} [2024-06-03 18:37:31,053 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2024-06-03 18:37:31,054 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 116 transitions, 1123 flow [2024-06-03 18:37:31,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:31,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:31,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:31,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 18:37:31,054 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:31,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1063585308, now seen corresponding path program 1 times [2024-06-03 18:37:31,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:31,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303545168] [2024-06-03 18:37:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:31,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:32,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303545168] [2024-06-03 18:37:32,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303545168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:32,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:32,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:32,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434755974] [2024-06-03 18:37:32,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:32,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:32,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:32,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:32,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:32,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:32,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 116 transitions, 1123 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:32,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:32,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:32,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:32,717 INFO L124 PetriNetUnfolderBase]: 375/658 cut-off events. [2024-06-03 18:37:32,717 INFO L125 PetriNetUnfolderBase]: For 27877/27877 co-relation queries the response was YES. [2024-06-03 18:37:32,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 658 events. 375/658 cut-off events. For 27877/27877 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2687 event pairs, 66 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4447. Up to 591 conditions per place. [2024-06-03 18:37:32,721 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 118 selfloop transitions, 16 changer transitions 0/136 dead transitions. [2024-06-03 18:37:32,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 136 transitions, 1465 flow [2024-06-03 18:37:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 18:37:32,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-03 18:37:32,722 INFO L175 Difference]: Start difference. First operand has 141 places, 116 transitions, 1123 flow. Second operand 9 states and 100 transitions. [2024-06-03 18:37:32,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 136 transitions, 1465 flow [2024-06-03 18:37:32,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 136 transitions, 1414 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:32,762 INFO L231 Difference]: Finished difference. Result has 143 places, 118 transitions, 1139 flow [2024-06-03 18:37:32,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1139, PETRI_PLACES=143, PETRI_TRANSITIONS=118} [2024-06-03 18:37:32,763 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2024-06-03 18:37:32,763 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 118 transitions, 1139 flow [2024-06-03 18:37:32,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:32,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:32,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:32,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 18:37:32,763 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:32,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:32,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1481802204, now seen corresponding path program 1 times [2024-06-03 18:37:32,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:32,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581306958] [2024-06-03 18:37:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:32,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:34,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:34,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581306958] [2024-06-03 18:37:34,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581306958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:34,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:34,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:34,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043577755] [2024-06-03 18:37:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:34,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:34,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:34,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:34,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 118 transitions, 1139 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:34,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:34,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:34,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:34,788 INFO L124 PetriNetUnfolderBase]: 416/729 cut-off events. [2024-06-03 18:37:34,788 INFO L125 PetriNetUnfolderBase]: For 29014/29014 co-relation queries the response was YES. [2024-06-03 18:37:34,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4969 conditions, 729 events. 416/729 cut-off events. For 29014/29014 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3067 event pairs, 90 based on Foata normal form. 1/730 useless extension candidates. Maximal degree in co-relation 4896. Up to 637 conditions per place. [2024-06-03 18:37:34,793 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 120 selfloop transitions, 32 changer transitions 0/154 dead transitions. [2024-06-03 18:37:34,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 154 transitions, 1736 flow [2024-06-03 18:37:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:37:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:37:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 18:37:34,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-03 18:37:34,795 INFO L175 Difference]: Start difference. First operand has 143 places, 118 transitions, 1139 flow. Second operand 10 states and 107 transitions. [2024-06-03 18:37:34,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 154 transitions, 1736 flow [2024-06-03 18:37:34,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 154 transitions, 1675 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:34,836 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1447 flow [2024-06-03 18:37:34,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1447, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2024-06-03 18:37:34,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2024-06-03 18:37:34,837 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1447 flow [2024-06-03 18:37:34,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:34,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:34,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:34,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 18:37:34,840 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:34,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:34,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1356258350, now seen corresponding path program 3 times [2024-06-03 18:37:34,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:34,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952824331] [2024-06-03 18:37:34,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:34,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:35,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952824331] [2024-06-03 18:37:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952824331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 18:37:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220365878] [2024-06-03 18:37:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:35,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 18:37:35,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:35,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 18:37:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 18:37:35,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-03 18:37:35,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1447 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:35,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:35,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-03 18:37:35,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:36,062 INFO L124 PetriNetUnfolderBase]: 403/712 cut-off events. [2024-06-03 18:37:36,062 INFO L125 PetriNetUnfolderBase]: For 29861/29870 co-relation queries the response was YES. [2024-06-03 18:37:36,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4958 conditions, 712 events. 403/712 cut-off events. For 29861/29870 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3025 event pairs, 77 based on Foata normal form. 10/720 useless extension candidates. Maximal degree in co-relation 4879. Up to 595 conditions per place. [2024-06-03 18:37:36,067 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 111 selfloop transitions, 28 changer transitions 0/149 dead transitions. [2024-06-03 18:37:36,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 149 transitions, 1753 flow [2024-06-03 18:37:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-03 18:37:36,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-03 18:37:36,068 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1447 flow. Second operand 7 states and 86 transitions. [2024-06-03 18:37:36,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 149 transitions, 1753 flow [2024-06-03 18:37:36,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 149 transitions, 1705 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-03 18:37:36,113 INFO L231 Difference]: Finished difference. Result has 156 places, 139 transitions, 1460 flow [2024-06-03 18:37:36,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1460, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2024-06-03 18:37:36,113 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-03 18:37:36,113 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 1460 flow [2024-06-03 18:37:36,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:36,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:36,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:36,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 18:37:36,114 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:36,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1544092728, now seen corresponding path program 2 times [2024-06-03 18:37:36,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:36,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172130127] [2024-06-03 18:37:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:36,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:37,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:37,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172130127] [2024-06-03 18:37:37,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172130127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:37,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:37,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:37,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125100159] [2024-06-03 18:37:37,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:37,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:37,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:37,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:37,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:37,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:37,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 1460 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:37,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:37,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:37,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:37,560 INFO L124 PetriNetUnfolderBase]: 463/808 cut-off events. [2024-06-03 18:37:37,560 INFO L125 PetriNetUnfolderBase]: For 32065/32065 co-relation queries the response was YES. [2024-06-03 18:37:37,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5457 conditions, 808 events. 463/808 cut-off events. For 32065/32065 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3531 event pairs, 66 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 5376. Up to 639 conditions per place. [2024-06-03 18:37:37,566 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 47 changer transitions 0/181 dead transitions. [2024-06-03 18:37:37,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 181 transitions, 2072 flow [2024-06-03 18:37:37,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:37:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:37:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 18:37:37,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-03 18:37:37,567 INFO L175 Difference]: Start difference. First operand has 156 places, 139 transitions, 1460 flow. Second operand 10 states and 117 transitions. [2024-06-03 18:37:37,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 181 transitions, 2072 flow [2024-06-03 18:37:37,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 181 transitions, 1957 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:37,620 INFO L231 Difference]: Finished difference. Result has 163 places, 159 transitions, 1691 flow [2024-06-03 18:37:37,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=163, PETRI_TRANSITIONS=159} [2024-06-03 18:37:37,621 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2024-06-03 18:37:37,621 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 159 transitions, 1691 flow [2024-06-03 18:37:37,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:37,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:37,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:37,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 18:37:37,621 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:37,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:37,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1246212750, now seen corresponding path program 3 times [2024-06-03 18:37:37,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:37,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239947613] [2024-06-03 18:37:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:37,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:38,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:38,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239947613] [2024-06-03 18:37:38,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239947613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:38,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:38,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:38,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473621529] [2024-06-03 18:37:38,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:38,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:38,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:38,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:38,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:38,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 159 transitions, 1691 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:38,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:38,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:38,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:38,944 INFO L124 PetriNetUnfolderBase]: 469/818 cut-off events. [2024-06-03 18:37:38,944 INFO L125 PetriNetUnfolderBase]: For 33787/33787 co-relation queries the response was YES. [2024-06-03 18:37:38,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5665 conditions, 818 events. 469/818 cut-off events. For 33787/33787 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3569 event pairs, 72 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 5580. Up to 677 conditions per place. [2024-06-03 18:37:38,951 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 141 selfloop transitions, 38 changer transitions 0/181 dead transitions. [2024-06-03 18:37:38,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 181 transitions, 2149 flow [2024-06-03 18:37:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:37:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:37:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 18:37:38,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-03 18:37:38,952 INFO L175 Difference]: Start difference. First operand has 163 places, 159 transitions, 1691 flow. Second operand 10 states and 115 transitions. [2024-06-03 18:37:38,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 181 transitions, 2149 flow [2024-06-03 18:37:39,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 181 transitions, 2016 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:39,008 INFO L231 Difference]: Finished difference. Result has 166 places, 161 transitions, 1677 flow [2024-06-03 18:37:39,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1677, PETRI_PLACES=166, PETRI_TRANSITIONS=161} [2024-06-03 18:37:39,009 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-06-03 18:37:39,009 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 161 transitions, 1677 flow [2024-06-03 18:37:39,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:39,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:39,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:39,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 18:37:39,010 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:39,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:39,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1246033012, now seen corresponding path program 2 times [2024-06-03 18:37:39,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:39,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634713288] [2024-06-03 18:37:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:39,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:40,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:40,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634713288] [2024-06-03 18:37:40,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634713288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:40,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:40,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:40,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348689361] [2024-06-03 18:37:40,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:40,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:40,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:40,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:40,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:40,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 161 transitions, 1677 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:40,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:40,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:40,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:41,240 INFO L124 PetriNetUnfolderBase]: 482/839 cut-off events. [2024-06-03 18:37:41,240 INFO L125 PetriNetUnfolderBase]: For 36342/36342 co-relation queries the response was YES. [2024-06-03 18:37:41,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5801 conditions, 839 events. 482/839 cut-off events. For 36342/36342 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3691 event pairs, 88 based on Foata normal form. 1/840 useless extension candidates. Maximal degree in co-relation 5719. Up to 734 conditions per place. [2024-06-03 18:37:41,245 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 146 selfloop transitions, 35 changer transitions 0/183 dead transitions. [2024-06-03 18:37:41,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 183 transitions, 2266 flow [2024-06-03 18:37:41,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:37:41,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:37:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 18:37:41,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-03 18:37:41,247 INFO L175 Difference]: Start difference. First operand has 166 places, 161 transitions, 1677 flow. Second operand 10 states and 111 transitions. [2024-06-03 18:37:41,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 183 transitions, 2266 flow [2024-06-03 18:37:41,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 183 transitions, 2170 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:41,314 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 1752 flow [2024-06-03 18:37:41,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2024-06-03 18:37:41,314 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-03 18:37:41,314 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 1752 flow [2024-06-03 18:37:41,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:41,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:41,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:41,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 18:37:41,315 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:41,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash 21423918, now seen corresponding path program 4 times [2024-06-03 18:37:41,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:41,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666365276] [2024-06-03 18:37:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:41,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:42,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666365276] [2024-06-03 18:37:42,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666365276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:42,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:42,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:42,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959408001] [2024-06-03 18:37:42,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:42,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:42,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:42,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 1752 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:42,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:42,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:42,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:43,024 INFO L124 PetriNetUnfolderBase]: 499/867 cut-off events. [2024-06-03 18:37:43,024 INFO L125 PetriNetUnfolderBase]: For 40057/40057 co-relation queries the response was YES. [2024-06-03 18:37:43,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6056 conditions, 867 events. 499/867 cut-off events. For 40057/40057 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3856 event pairs, 65 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 5972. Up to 659 conditions per place. [2024-06-03 18:37:43,031 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 57 changer transitions 0/195 dead transitions. [2024-06-03 18:37:43,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 195 transitions, 2392 flow [2024-06-03 18:37:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:37:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:37:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 18:37:43,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:37:43,032 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 1752 flow. Second operand 10 states and 120 transitions. [2024-06-03 18:37:43,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 195 transitions, 2392 flow [2024-06-03 18:37:43,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 195 transitions, 2305 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-03 18:37:43,096 INFO L231 Difference]: Finished difference. Result has 177 places, 171 transitions, 1891 flow [2024-06-03 18:37:43,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1891, PETRI_PLACES=177, PETRI_TRANSITIONS=171} [2024-06-03 18:37:43,097 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2024-06-03 18:37:43,097 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 171 transitions, 1891 flow [2024-06-03 18:37:43,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:43,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:43,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:43,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 18:37:43,097 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:43,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:43,098 INFO L85 PathProgramCache]: Analyzing trace with hash -241606324, now seen corresponding path program 1 times [2024-06-03 18:37:43,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:43,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774435269] [2024-06-03 18:37:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:43,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:45,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:45,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774435269] [2024-06-03 18:37:45,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774435269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:45,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:45,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:45,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95065512] [2024-06-03 18:37:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:45,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:45,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:45,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:45,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:45,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 171 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:45,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:45,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:45,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:45,771 INFO L124 PetriNetUnfolderBase]: 500/870 cut-off events. [2024-06-03 18:37:45,771 INFO L125 PetriNetUnfolderBase]: For 41304/41304 co-relation queries the response was YES. [2024-06-03 18:37:45,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 870 events. 500/870 cut-off events. For 41304/41304 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3893 event pairs, 100 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 6119. Up to 778 conditions per place. [2024-06-03 18:37:45,778 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 158 selfloop transitions, 33 changer transitions 0/193 dead transitions. [2024-06-03 18:37:45,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 193 transitions, 2387 flow [2024-06-03 18:37:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:37:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:37:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 18:37:45,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-03 18:37:45,779 INFO L175 Difference]: Start difference. First operand has 177 places, 171 transitions, 1891 flow. Second operand 11 states and 116 transitions. [2024-06-03 18:37:45,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 193 transitions, 2387 flow [2024-06-03 18:37:45,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 193 transitions, 2294 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:45,858 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 1942 flow [2024-06-03 18:37:45,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1942, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2024-06-03 18:37:45,859 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2024-06-03 18:37:45,859 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 1942 flow [2024-06-03 18:37:45,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:45,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:45,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:45,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 18:37:45,859 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:45,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1533988120, now seen corresponding path program 5 times [2024-06-03 18:37:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:45,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408674016] [2024-06-03 18:37:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:45,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:46,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:46,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408674016] [2024-06-03 18:37:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408674016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:46,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:46,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:46,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274743258] [2024-06-03 18:37:46,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:46,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:46,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:46,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:47,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:47,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 1942 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:47,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:47,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:47,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:47,523 INFO L124 PetriNetUnfolderBase]: 506/881 cut-off events. [2024-06-03 18:37:47,523 INFO L125 PetriNetUnfolderBase]: For 41777/41777 co-relation queries the response was YES. [2024-06-03 18:37:47,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6339 conditions, 881 events. 506/881 cut-off events. For 41777/41777 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3934 event pairs, 71 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 6250. Up to 722 conditions per place. [2024-06-03 18:37:47,533 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 146 selfloop transitions, 44 changer transitions 0/192 dead transitions. [2024-06-03 18:37:47,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 192 transitions, 2402 flow [2024-06-03 18:37:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 18:37:47,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-03 18:37:47,535 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 1942 flow. Second operand 9 states and 103 transitions. [2024-06-03 18:37:47,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 192 transitions, 2402 flow [2024-06-03 18:37:47,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 192 transitions, 2345 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-03 18:37:47,619 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 2025 flow [2024-06-03 18:37:47,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2025, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2024-06-03 18:37:47,620 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 157 predicate places. [2024-06-03 18:37:47,620 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 2025 flow [2024-06-03 18:37:47,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:47,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:47,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:47,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 18:37:47,620 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:47,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:47,621 INFO L85 PathProgramCache]: Analyzing trace with hash -821915364, now seen corresponding path program 6 times [2024-06-03 18:37:47,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:47,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018561991] [2024-06-03 18:37:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:47,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:48,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:48,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018561991] [2024-06-03 18:37:48,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018561991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:48,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:48,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140398812] [2024-06-03 18:37:48,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:48,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:48,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:48,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:48,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:48,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 2025 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:48,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:48,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:48,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:49,176 INFO L124 PetriNetUnfolderBase]: 522/907 cut-off events. [2024-06-03 18:37:49,176 INFO L125 PetriNetUnfolderBase]: For 46443/46443 co-relation queries the response was YES. [2024-06-03 18:37:49,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6750 conditions, 907 events. 522/907 cut-off events. For 46443/46443 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4073 event pairs, 59 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 6660. Up to 613 conditions per place. [2024-06-03 18:37:49,183 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 118 selfloop transitions, 80 changer transitions 0/200 dead transitions. [2024-06-03 18:37:49,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 200 transitions, 2663 flow [2024-06-03 18:37:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:49,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 18:37:49,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:37:49,184 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 2025 flow. Second operand 9 states and 108 transitions. [2024-06-03 18:37:49,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 200 transitions, 2663 flow [2024-06-03 18:37:49,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 200 transitions, 2553 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:49,269 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 2177 flow [2024-06-03 18:37:49,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2177, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2024-06-03 18:37:49,269 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2024-06-03 18:37:49,270 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 2177 flow [2024-06-03 18:37:49,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:49,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:49,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:49,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 18:37:49,270 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:49,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:49,270 INFO L85 PathProgramCache]: Analyzing trace with hash -821921874, now seen corresponding path program 7 times [2024-06-03 18:37:49,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:49,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140377653] [2024-06-03 18:37:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:50,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140377653] [2024-06-03 18:37:50,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140377653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:50,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:50,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:50,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49964002] [2024-06-03 18:37:50,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:50,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:50,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:50,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 2177 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:50,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:50,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:50,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:51,010 INFO L124 PetriNetUnfolderBase]: 523/909 cut-off events. [2024-06-03 18:37:51,010 INFO L125 PetriNetUnfolderBase]: For 47743/47743 co-relation queries the response was YES. [2024-06-03 18:37:51,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6888 conditions, 909 events. 523/909 cut-off events. For 47743/47743 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4091 event pairs, 77 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 6797. Up to 738 conditions per place. [2024-06-03 18:37:51,017 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 153 selfloop transitions, 49 changer transitions 0/204 dead transitions. [2024-06-03 18:37:51,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 204 transitions, 2710 flow [2024-06-03 18:37:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:37:51,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:37:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 18:37:51,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-03 18:37:51,018 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 2177 flow. Second operand 10 states and 117 transitions. [2024-06-03 18:37:51,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 204 transitions, 2710 flow [2024-06-03 18:37:51,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 204 transitions, 2585 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:51,104 INFO L231 Difference]: Finished difference. Result has 195 places, 185 transitions, 2219 flow [2024-06-03 18:37:51,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2219, PETRI_PLACES=195, PETRI_TRANSITIONS=185} [2024-06-03 18:37:51,105 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-03 18:37:51,105 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 185 transitions, 2219 flow [2024-06-03 18:37:51,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:51,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:51,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:51,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 18:37:51,105 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:51,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -649780552, now seen corresponding path program 2 times [2024-06-03 18:37:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:51,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587751975] [2024-06-03 18:37:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:51,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:53,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587751975] [2024-06-03 18:37:53,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587751975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:53,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:53,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198002] [2024-06-03 18:37:53,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:53,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:53,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:53,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:53,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:53,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 185 transitions, 2219 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:53,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:53,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:53,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:53,609 INFO L124 PetriNetUnfolderBase]: 529/917 cut-off events. [2024-06-03 18:37:53,609 INFO L125 PetriNetUnfolderBase]: For 48245/48245 co-relation queries the response was YES. [2024-06-03 18:37:53,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6948 conditions, 917 events. 529/917 cut-off events. For 48245/48245 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4159 event pairs, 98 based on Foata normal form. 2/919 useless extension candidates. Maximal degree in co-relation 6856. Up to 796 conditions per place. [2024-06-03 18:37:53,615 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 159 selfloop transitions, 41 changer transitions 0/202 dead transitions. [2024-06-03 18:37:53,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 202 transitions, 2709 flow [2024-06-03 18:37:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:37:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:37:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 18:37:53,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-03 18:37:53,616 INFO L175 Difference]: Start difference. First operand has 195 places, 185 transitions, 2219 flow. Second operand 10 states and 107 transitions. [2024-06-03 18:37:53,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 202 transitions, 2709 flow [2024-06-03 18:37:53,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 202 transitions, 2570 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:53,705 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 2214 flow [2024-06-03 18:37:53,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2214, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2024-06-03 18:37:53,705 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 166 predicate places. [2024-06-03 18:37:53,705 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 2214 flow [2024-06-03 18:37:53,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:53,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:53,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:53,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 18:37:53,706 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:53,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1632626636, now seen corresponding path program 8 times [2024-06-03 18:37:53,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:53,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517830012] [2024-06-03 18:37:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:53,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:54,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:54,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517830012] [2024-06-03 18:37:54,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517830012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:54,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:54,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:54,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398661519] [2024-06-03 18:37:54,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:54,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:54,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:54,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:54,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 2214 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:54,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:54,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:54,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:55,131 INFO L124 PetriNetUnfolderBase]: 545/947 cut-off events. [2024-06-03 18:37:55,132 INFO L125 PetriNetUnfolderBase]: For 51787/51787 co-relation queries the response was YES. [2024-06-03 18:37:55,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7200 conditions, 947 events. 545/947 cut-off events. For 51787/51787 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4301 event pairs, 62 based on Foata normal form. 2/949 useless extension candidates. Maximal degree in co-relation 7109. Up to 677 conditions per place. [2024-06-03 18:37:55,140 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 135 selfloop transitions, 72 changer transitions 0/209 dead transitions. [2024-06-03 18:37:55,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 209 transitions, 2878 flow [2024-06-03 18:37:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:55,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 18:37:55,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-03 18:37:55,141 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 2214 flow. Second operand 9 states and 109 transitions. [2024-06-03 18:37:55,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 209 transitions, 2878 flow [2024-06-03 18:37:55,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 209 transitions, 2776 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 18:37:55,227 INFO L231 Difference]: Finished difference. Result has 199 places, 191 transitions, 2353 flow [2024-06-03 18:37:55,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2353, PETRI_PLACES=199, PETRI_TRANSITIONS=191} [2024-06-03 18:37:55,228 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-03 18:37:55,228 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 191 transitions, 2353 flow [2024-06-03 18:37:55,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:55,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:55,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:55,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 18:37:55,228 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:55,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash -923209824, now seen corresponding path program 9 times [2024-06-03 18:37:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:55,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797572154] [2024-06-03 18:37:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:55,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:56,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797572154] [2024-06-03 18:37:56,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797572154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:56,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:56,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083046551] [2024-06-03 18:37:56,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:56,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:56,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:56,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:56,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:56,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:56,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 191 transitions, 2353 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:56,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:56,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:56,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:56,555 INFO L124 PetriNetUnfolderBase]: 551/955 cut-off events. [2024-06-03 18:37:56,555 INFO L125 PetriNetUnfolderBase]: For 54288/54288 co-relation queries the response was YES. [2024-06-03 18:37:56,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7424 conditions, 955 events. 551/955 cut-off events. For 54288/54288 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4360 event pairs, 90 based on Foata normal form. 2/957 useless extension candidates. Maximal degree in co-relation 7332. Up to 812 conditions per place. [2024-06-03 18:37:56,561 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 165 selfloop transitions, 39 changer transitions 0/206 dead transitions. [2024-06-03 18:37:56,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 206 transitions, 2847 flow [2024-06-03 18:37:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 18:37:56,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-03 18:37:56,562 INFO L175 Difference]: Start difference. First operand has 199 places, 191 transitions, 2353 flow. Second operand 9 states and 101 transitions. [2024-06-03 18:37:56,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 206 transitions, 2847 flow [2024-06-03 18:37:56,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 206 transitions, 2712 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-03 18:37:56,663 INFO L231 Difference]: Finished difference. Result has 203 places, 193 transitions, 2353 flow [2024-06-03 18:37:56,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2353, PETRI_PLACES=203, PETRI_TRANSITIONS=193} [2024-06-03 18:37:56,663 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-03 18:37:56,664 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 193 transitions, 2353 flow [2024-06-03 18:37:56,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:56,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:56,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:56,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 18:37:56,664 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:56,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:56,665 INFO L85 PathProgramCache]: Analyzing trace with hash -923030334, now seen corresponding path program 10 times [2024-06-03 18:37:56,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:56,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052951018] [2024-06-03 18:37:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:57,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:57,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052951018] [2024-06-03 18:37:57,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052951018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:57,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:57,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:57,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634599455] [2024-06-03 18:37:57,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:57,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:57,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:57,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:57,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 193 transitions, 2353 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:57,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:57,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:57,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:58,335 INFO L124 PetriNetUnfolderBase]: 567/981 cut-off events. [2024-06-03 18:37:58,335 INFO L125 PetriNetUnfolderBase]: For 59245/59245 co-relation queries the response was YES. [2024-06-03 18:37:58,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7799 conditions, 981 events. 567/981 cut-off events. For 59245/59245 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4511 event pairs, 86 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 7705. Up to 783 conditions per place. [2024-06-03 18:37:58,342 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 160 selfloop transitions, 52 changer transitions 0/214 dead transitions. [2024-06-03 18:37:58,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 214 transitions, 3041 flow [2024-06-03 18:37:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:58,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:58,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 18:37:58,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:37:58,344 INFO L175 Difference]: Start difference. First operand has 203 places, 193 transitions, 2353 flow. Second operand 9 states and 108 transitions. [2024-06-03 18:37:58,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 214 transitions, 3041 flow [2024-06-03 18:37:58,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 214 transitions, 2922 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:58,459 INFO L231 Difference]: Finished difference. Result has 205 places, 197 transitions, 2452 flow [2024-06-03 18:37:58,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2452, PETRI_PLACES=205, PETRI_TRANSITIONS=197} [2024-06-03 18:37:58,459 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 173 predicate places. [2024-06-03 18:37:58,459 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 197 transitions, 2452 flow [2024-06-03 18:37:58,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:58,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:58,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:58,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 18:37:58,459 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:58,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -923030086, now seen corresponding path program 3 times [2024-06-03 18:37:58,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:58,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735553765] [2024-06-03 18:37:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:58,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735553765] [2024-06-03 18:37:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735553765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:59,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:59,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:37:59,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799175807] [2024-06-03 18:37:59,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:59,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:37:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:37:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:37:59,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:37:59,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 197 transitions, 2452 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:59,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:59,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:37:59,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:00,403 INFO L124 PetriNetUnfolderBase]: 565/976 cut-off events. [2024-06-03 18:38:00,403 INFO L125 PetriNetUnfolderBase]: For 59897/59897 co-relation queries the response was YES. [2024-06-03 18:38:00,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7771 conditions, 976 events. 565/976 cut-off events. For 59897/59897 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4485 event pairs, 113 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 7676. Up to 884 conditions per place. [2024-06-03 18:38:00,411 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 175 selfloop transitions, 33 changer transitions 0/210 dead transitions. [2024-06-03 18:38:00,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 210 transitions, 2951 flow [2024-06-03 18:38:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:38:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:38:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 18:38:00,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-03 18:38:00,412 INFO L175 Difference]: Start difference. First operand has 205 places, 197 transitions, 2452 flow. Second operand 9 states and 97 transitions. [2024-06-03 18:38:00,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 210 transitions, 2951 flow [2024-06-03 18:38:00,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 210 transitions, 2839 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-03 18:38:00,512 INFO L231 Difference]: Finished difference. Result has 209 places, 199 transitions, 2465 flow [2024-06-03 18:38:00,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2465, PETRI_PLACES=209, PETRI_TRANSITIONS=199} [2024-06-03 18:38:00,513 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2024-06-03 18:38:00,513 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 199 transitions, 2465 flow [2024-06-03 18:38:00,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:00,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:00,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:00,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 18:38:00,513 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:00,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash -916780734, now seen corresponding path program 11 times [2024-06-03 18:38:00,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:00,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323240000] [2024-06-03 18:38:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:00,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:01,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:01,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323240000] [2024-06-03 18:38:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323240000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:01,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:01,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:01,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283150027] [2024-06-03 18:38:01,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:01,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:01,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:01,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:01,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:01,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:01,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 199 transitions, 2465 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:01,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:01,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:01,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:02,075 INFO L124 PetriNetUnfolderBase]: 571/988 cut-off events. [2024-06-03 18:38:02,076 INFO L125 PetriNetUnfolderBase]: For 61696/61696 co-relation queries the response was YES. [2024-06-03 18:38:02,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7874 conditions, 988 events. 571/988 cut-off events. For 61696/61696 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4535 event pairs, 91 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7777. Up to 841 conditions per place. [2024-06-03 18:38:02,084 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 171 selfloop transitions, 41 changer transitions 0/214 dead transitions. [2024-06-03 18:38:02,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 214 transitions, 2975 flow [2024-06-03 18:38:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:38:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:38:02,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 18:38:02,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-03 18:38:02,085 INFO L175 Difference]: Start difference. First operand has 209 places, 199 transitions, 2465 flow. Second operand 9 states and 100 transitions. [2024-06-03 18:38:02,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 214 transitions, 2975 flow [2024-06-03 18:38:02,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 214 transitions, 2879 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-03 18:38:02,220 INFO L231 Difference]: Finished difference. Result has 211 places, 201 transitions, 2506 flow [2024-06-03 18:38:02,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2506, PETRI_PLACES=211, PETRI_TRANSITIONS=201} [2024-06-03 18:38:02,220 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-03 18:38:02,220 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 201 transitions, 2506 flow [2024-06-03 18:38:02,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:02,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:02,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:02,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 18:38:02,221 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:02,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash -93505674, now seen corresponding path program 12 times [2024-06-03 18:38:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:02,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394174359] [2024-06-03 18:38:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:03,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:03,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394174359] [2024-06-03 18:38:03,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394174359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:03,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:03,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:03,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884111577] [2024-06-03 18:38:03,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:03,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:03,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:03,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:03,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 201 transitions, 2506 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:03,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:03,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:03,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:03,912 INFO L124 PetriNetUnfolderBase]: 567/982 cut-off events. [2024-06-03 18:38:03,913 INFO L125 PetriNetUnfolderBase]: For 60999/60999 co-relation queries the response was YES. [2024-06-03 18:38:03,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7772 conditions, 982 events. 567/982 cut-off events. For 60999/60999 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4525 event pairs, 88 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 7674. Up to 810 conditions per place. [2024-06-03 18:38:03,920 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 166 selfloop transitions, 48 changer transitions 0/216 dead transitions. [2024-06-03 18:38:03,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 216 transitions, 2982 flow [2024-06-03 18:38:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:38:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:38:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 18:38:03,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-03 18:38:03,921 INFO L175 Difference]: Start difference. First operand has 211 places, 201 transitions, 2506 flow. Second operand 9 states and 105 transitions. [2024-06-03 18:38:03,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 216 transitions, 2982 flow [2024-06-03 18:38:04,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 216 transitions, 2835 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-03 18:38:04,032 INFO L231 Difference]: Finished difference. Result has 213 places, 201 transitions, 2463 flow [2024-06-03 18:38:04,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2463, PETRI_PLACES=213, PETRI_TRANSITIONS=201} [2024-06-03 18:38:04,032 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 181 predicate places. [2024-06-03 18:38:04,033 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 201 transitions, 2463 flow [2024-06-03 18:38:04,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:04,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:04,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:04,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 18:38:04,033 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:04,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:04,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1555199516, now seen corresponding path program 13 times [2024-06-03 18:38:04,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:04,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863568691] [2024-06-03 18:38:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:04,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:04,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:04,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863568691] [2024-06-03 18:38:04,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863568691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:04,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:04,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:04,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624337067] [2024-06-03 18:38:04,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:04,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:04,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:05,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:05,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 201 transitions, 2463 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:05,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:05,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:05,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:05,511 INFO L124 PetriNetUnfolderBase]: 563/976 cut-off events. [2024-06-03 18:38:05,511 INFO L125 PetriNetUnfolderBase]: For 59668/59668 co-relation queries the response was YES. [2024-06-03 18:38:05,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 976 events. 563/976 cut-off events. For 59668/59668 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4494 event pairs, 72 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 7496. Up to 556 conditions per place. [2024-06-03 18:38:05,519 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 124 selfloop transitions, 94 changer transitions 0/220 dead transitions. [2024-06-03 18:38:05,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 220 transitions, 3233 flow [2024-06-03 18:38:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:38:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:38:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 18:38:05,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-03 18:38:05,520 INFO L175 Difference]: Start difference. First operand has 213 places, 201 transitions, 2463 flow. Second operand 9 states and 109 transitions. [2024-06-03 18:38:05,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 220 transitions, 3233 flow [2024-06-03 18:38:05,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 220 transitions, 3082 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:05,649 INFO L231 Difference]: Finished difference. Result has 215 places, 203 transitions, 2575 flow [2024-06-03 18:38:05,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2575, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2024-06-03 18:38:05,650 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 183 predicate places. [2024-06-03 18:38:05,650 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 2575 flow [2024-06-03 18:38:05,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:05,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:05,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:05,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 18:38:05,650 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:05,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:05,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1732143906, now seen corresponding path program 3 times [2024-06-03 18:38:05,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:05,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950588256] [2024-06-03 18:38:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:05,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:08,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:08,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950588256] [2024-06-03 18:38:08,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950588256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:08,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:08,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:08,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446456117] [2024-06-03 18:38:08,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:08,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:08,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:08,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:08,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:08,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:08,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 2575 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:08,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:08,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:08,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:08,923 INFO L124 PetriNetUnfolderBase]: 569/984 cut-off events. [2024-06-03 18:38:08,924 INFO L125 PetriNetUnfolderBase]: For 61385/61385 co-relation queries the response was YES. [2024-06-03 18:38:08,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7777 conditions, 984 events. 569/984 cut-off events. For 61385/61385 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4550 event pairs, 113 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 7676. Up to 893 conditions per place. [2024-06-03 18:38:08,932 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 186 selfloop transitions, 30 changer transitions 0/218 dead transitions. [2024-06-03 18:38:08,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 218 transitions, 3097 flow [2024-06-03 18:38:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 18:38:08,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-03 18:38:08,933 INFO L175 Difference]: Start difference. First operand has 215 places, 203 transitions, 2575 flow. Second operand 10 states and 105 transitions. [2024-06-03 18:38:08,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 218 transitions, 3097 flow [2024-06-03 18:38:09,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 218 transitions, 2900 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 18:38:09,056 INFO L231 Difference]: Finished difference. Result has 218 places, 205 transitions, 2493 flow [2024-06-03 18:38:09,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2493, PETRI_PLACES=218, PETRI_TRANSITIONS=205} [2024-06-03 18:38:09,057 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-03 18:38:09,057 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 205 transitions, 2493 flow [2024-06-03 18:38:09,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:09,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:09,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:09,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 18:38:09,058 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:09,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1554953438, now seen corresponding path program 4 times [2024-06-03 18:38:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:09,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611388974] [2024-06-03 18:38:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:09,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:10,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:10,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611388974] [2024-06-03 18:38:10,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611388974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:10,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:10,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:10,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412893441] [2024-06-03 18:38:10,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:10,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:10,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:10,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:10,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:10,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:10,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 205 transitions, 2493 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:10,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:10,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:10,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:10,658 INFO L124 PetriNetUnfolderBase]: 570/986 cut-off events. [2024-06-03 18:38:10,658 INFO L125 PetriNetUnfolderBase]: For 61512/61512 co-relation queries the response was YES. [2024-06-03 18:38:10,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7600 conditions, 986 events. 570/986 cut-off events. For 61512/61512 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4595 event pairs, 97 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 7498. Up to 865 conditions per place. [2024-06-03 18:38:10,666 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 177 selfloop transitions, 42 changer transitions 0/221 dead transitions. [2024-06-03 18:38:10,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 3031 flow [2024-06-03 18:38:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 18:38:10,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-03 18:38:10,667 INFO L175 Difference]: Start difference. First operand has 218 places, 205 transitions, 2493 flow. Second operand 10 states and 107 transitions. [2024-06-03 18:38:10,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 3031 flow [2024-06-03 18:38:10,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 221 transitions, 2938 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:10,797 INFO L231 Difference]: Finished difference. Result has 220 places, 207 transitions, 2543 flow [2024-06-03 18:38:10,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2543, PETRI_PLACES=220, PETRI_TRANSITIONS=207} [2024-06-03 18:38:10,797 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 188 predicate places. [2024-06-03 18:38:10,797 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 207 transitions, 2543 flow [2024-06-03 18:38:10,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:10,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:10,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:10,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 18:38:10,798 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:10,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:10,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1259734238, now seen corresponding path program 5 times [2024-06-03 18:38:10,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:10,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533279212] [2024-06-03 18:38:10,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:10,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:12,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533279212] [2024-06-03 18:38:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533279212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:12,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464041845] [2024-06-03 18:38:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:12,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:12,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 207 transitions, 2543 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:12,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:12,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:12,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:12,780 INFO L124 PetriNetUnfolderBase]: 566/982 cut-off events. [2024-06-03 18:38:12,780 INFO L125 PetriNetUnfolderBase]: For 58975/58975 co-relation queries the response was YES. [2024-06-03 18:38:12,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 982 events. 566/982 cut-off events. For 58975/58975 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4564 event pairs, 183 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 7383. Up to 934 conditions per place. [2024-06-03 18:38:12,788 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 197 selfloop transitions, 20 changer transitions 0/219 dead transitions. [2024-06-03 18:38:12,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 219 transitions, 3011 flow [2024-06-03 18:38:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-03 18:38:12,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2975206611570248 [2024-06-03 18:38:12,789 INFO L175 Difference]: Start difference. First operand has 220 places, 207 transitions, 2543 flow. Second operand 11 states and 108 transitions. [2024-06-03 18:38:12,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 219 transitions, 3011 flow [2024-06-03 18:38:12,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 219 transitions, 2882 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:12,908 INFO L231 Difference]: Finished difference. Result has 223 places, 207 transitions, 2459 flow [2024-06-03 18:38:12,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2459, PETRI_PLACES=223, PETRI_TRANSITIONS=207} [2024-06-03 18:38:12,909 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 191 predicate places. [2024-06-03 18:38:12,909 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 207 transitions, 2459 flow [2024-06-03 18:38:12,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:12,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:12,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:12,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 18:38:12,909 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:12,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:12,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1502464224, now seen corresponding path program 14 times [2024-06-03 18:38:12,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:12,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662148012] [2024-06-03 18:38:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:12,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:14,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:14,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662148012] [2024-06-03 18:38:14,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662148012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:14,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:14,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396291879] [2024-06-03 18:38:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:14,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:14,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:14,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:14,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 207 transitions, 2459 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:14,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:14,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:14,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:14,444 INFO L124 PetriNetUnfolderBase]: 562/976 cut-off events. [2024-06-03 18:38:14,445 INFO L125 PetriNetUnfolderBase]: For 57036/57036 co-relation queries the response was YES. [2024-06-03 18:38:14,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7254 conditions, 976 events. 562/976 cut-off events. For 57036/57036 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4515 event pairs, 182 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 7150. Up to 942 conditions per place. [2024-06-03 18:38:14,454 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 200 selfloop transitions, 15 changer transitions 0/217 dead transitions. [2024-06-03 18:38:14,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 217 transitions, 2917 flow [2024-06-03 18:38:14,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:38:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:38:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-03 18:38:14,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3063973063973064 [2024-06-03 18:38:14,455 INFO L175 Difference]: Start difference. First operand has 223 places, 207 transitions, 2459 flow. Second operand 9 states and 91 transitions. [2024-06-03 18:38:14,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 217 transitions, 2917 flow [2024-06-03 18:38:14,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 217 transitions, 2832 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-03 18:38:14,579 INFO L231 Difference]: Finished difference. Result has 222 places, 207 transitions, 2409 flow [2024-06-03 18:38:14,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2409, PETRI_PLACES=222, PETRI_TRANSITIONS=207} [2024-06-03 18:38:14,580 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2024-06-03 18:38:14,580 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 207 transitions, 2409 flow [2024-06-03 18:38:14,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:14,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:14,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:14,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 18:38:14,580 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:14,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1269853568, now seen corresponding path program 6 times [2024-06-03 18:38:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812217794] [2024-06-03 18:38:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:15,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:15,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812217794] [2024-06-03 18:38:15,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812217794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:15,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:15,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:15,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281658467] [2024-06-03 18:38:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:15,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:15,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:15,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 207 transitions, 2409 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:15,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:15,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:15,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:16,061 INFO L124 PetriNetUnfolderBase]: 558/970 cut-off events. [2024-06-03 18:38:16,061 INFO L125 PetriNetUnfolderBase]: For 54876/54876 co-relation queries the response was YES. [2024-06-03 18:38:16,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7061 conditions, 970 events. 558/970 cut-off events. For 54876/54876 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4507 event pairs, 177 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 6956. Up to 900 conditions per place. [2024-06-03 18:38:16,069 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 194 selfloop transitions, 24 changer transitions 0/220 dead transitions. [2024-06-03 18:38:16,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 220 transitions, 2889 flow [2024-06-03 18:38:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 18:38:16,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-03 18:38:16,070 INFO L175 Difference]: Start difference. First operand has 222 places, 207 transitions, 2409 flow. Second operand 10 states and 106 transitions. [2024-06-03 18:38:16,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 220 transitions, 2889 flow [2024-06-03 18:38:16,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 220 transitions, 2842 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:16,188 INFO L231 Difference]: Finished difference. Result has 224 places, 207 transitions, 2415 flow [2024-06-03 18:38:16,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2415, PETRI_PLACES=224, PETRI_TRANSITIONS=207} [2024-06-03 18:38:16,189 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-03 18:38:16,189 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 207 transitions, 2415 flow [2024-06-03 18:38:16,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:16,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:16,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:16,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 18:38:16,189 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:16,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash -521375733, now seen corresponding path program 1 times [2024-06-03 18:38:16,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:16,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621198945] [2024-06-03 18:38:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:16,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:17,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:17,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621198945] [2024-06-03 18:38:17,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621198945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:17,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:17,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:17,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830514248] [2024-06-03 18:38:17,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:17,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:17,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:17,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:17,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:17,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:17,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 207 transitions, 2415 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:17,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:17,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:17,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:17,675 INFO L124 PetriNetUnfolderBase]: 592/1036 cut-off events. [2024-06-03 18:38:17,675 INFO L125 PetriNetUnfolderBase]: For 57266/57266 co-relation queries the response was YES. [2024-06-03 18:38:17,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 1036 events. 592/1036 cut-off events. For 57266/57266 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4970 event pairs, 112 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7282. Up to 900 conditions per place. [2024-06-03 18:38:17,683 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 202 selfloop transitions, 36 changer transitions 0/240 dead transitions. [2024-06-03 18:38:17,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 240 transitions, 3051 flow [2024-06-03 18:38:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:38:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:38:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-03 18:38:17,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-03 18:38:17,685 INFO L175 Difference]: Start difference. First operand has 224 places, 207 transitions, 2415 flow. Second operand 12 states and 127 transitions. [2024-06-03 18:38:17,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 240 transitions, 3051 flow [2024-06-03 18:38:17,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 240 transitions, 2987 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 18:38:17,795 INFO L231 Difference]: Finished difference. Result has 229 places, 217 transitions, 2540 flow [2024-06-03 18:38:17,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2540, PETRI_PLACES=229, PETRI_TRANSITIONS=217} [2024-06-03 18:38:17,796 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 197 predicate places. [2024-06-03 18:38:17,796 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 217 transitions, 2540 flow [2024-06-03 18:38:17,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:17,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:17,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:17,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 18:38:17,797 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:17,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash 254414457, now seen corresponding path program 2 times [2024-06-03 18:38:17,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:17,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538802862] [2024-06-03 18:38:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:17,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538802862] [2024-06-03 18:38:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538802862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:18,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:18,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049735014] [2024-06-03 18:38:18,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:18,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:18,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:18,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:18,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 217 transitions, 2540 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:18,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:18,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:18,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:19,451 INFO L124 PetriNetUnfolderBase]: 605/1059 cut-off events. [2024-06-03 18:38:19,451 INFO L125 PetriNetUnfolderBase]: For 58749/58749 co-relation queries the response was YES. [2024-06-03 18:38:19,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7614 conditions, 1059 events. 605/1059 cut-off events. For 58749/58749 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5119 event pairs, 124 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7505. Up to 938 conditions per place. [2024-06-03 18:38:19,463 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 203 selfloop transitions, 37 changer transitions 0/242 dead transitions. [2024-06-03 18:38:19,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 242 transitions, 3142 flow [2024-06-03 18:38:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 18:38:19,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-03 18:38:19,465 INFO L175 Difference]: Start difference. First operand has 229 places, 217 transitions, 2540 flow. Second operand 11 states and 118 transitions. [2024-06-03 18:38:19,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 242 transitions, 3142 flow [2024-06-03 18:38:19,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 242 transitions, 3065 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 18:38:19,593 INFO L231 Difference]: Finished difference. Result has 235 places, 222 transitions, 2624 flow [2024-06-03 18:38:19,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2624, PETRI_PLACES=235, PETRI_TRANSITIONS=222} [2024-06-03 18:38:19,593 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-03 18:38:19,593 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 222 transitions, 2624 flow [2024-06-03 18:38:19,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:19,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:19,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:19,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 18:38:19,594 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:19,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:19,594 INFO L85 PathProgramCache]: Analyzing trace with hash 254295417, now seen corresponding path program 3 times [2024-06-03 18:38:19,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:19,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731817490] [2024-06-03 18:38:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:19,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:20,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:20,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731817490] [2024-06-03 18:38:20,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731817490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:20,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:20,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:20,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45689918] [2024-06-03 18:38:20,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:20,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:20,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:20,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:20,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 222 transitions, 2624 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:20,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:20,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:20,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:21,227 INFO L124 PetriNetUnfolderBase]: 609/1067 cut-off events. [2024-06-03 18:38:21,227 INFO L125 PetriNetUnfolderBase]: For 61177/61177 co-relation queries the response was YES. [2024-06-03 18:38:21,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7711 conditions, 1067 events. 609/1067 cut-off events. For 61177/61177 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5164 event pairs, 128 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 7600. Up to 949 conditions per place. [2024-06-03 18:38:21,236 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 207 selfloop transitions, 34 changer transitions 0/243 dead transitions. [2024-06-03 18:38:21,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 243 transitions, 3180 flow [2024-06-03 18:38:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 18:38:21,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-03 18:38:21,237 INFO L175 Difference]: Start difference. First operand has 235 places, 222 transitions, 2624 flow. Second operand 11 states and 117 transitions. [2024-06-03 18:38:21,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 243 transitions, 3180 flow [2024-06-03 18:38:21,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 243 transitions, 3099 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:21,378 INFO L231 Difference]: Finished difference. Result has 238 places, 223 transitions, 2637 flow [2024-06-03 18:38:21,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2637, PETRI_PLACES=238, PETRI_TRANSITIONS=223} [2024-06-03 18:38:21,378 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-03 18:38:21,379 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 223 transitions, 2637 flow [2024-06-03 18:38:21,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:21,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:21,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:21,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 18:38:21,379 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:21,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash 811857211, now seen corresponding path program 4 times [2024-06-03 18:38:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015619526] [2024-06-03 18:38:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:22,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:22,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015619526] [2024-06-03 18:38:22,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015619526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:22,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:22,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 18:38:22,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293929376] [2024-06-03 18:38:22,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:22,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 18:38:22,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 18:38:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 18:38:22,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-03 18:38:22,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 223 transitions, 2637 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:22,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:22,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-03 18:38:22,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:22,633 INFO L124 PetriNetUnfolderBase]: 612/1082 cut-off events. [2024-06-03 18:38:22,634 INFO L125 PetriNetUnfolderBase]: For 63533/63538 co-relation queries the response was YES. [2024-06-03 18:38:22,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7759 conditions, 1082 events. 612/1082 cut-off events. For 63533/63538 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5384 event pairs, 91 based on Foata normal form. 6/1086 useless extension candidates. Maximal degree in co-relation 7647. Up to 883 conditions per place. [2024-06-03 18:38:22,643 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 196 selfloop transitions, 37 changer transitions 0/243 dead transitions. [2024-06-03 18:38:22,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 243 transitions, 3179 flow [2024-06-03 18:38:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 18:38:22,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-03 18:38:22,644 INFO L175 Difference]: Start difference. First operand has 238 places, 223 transitions, 2637 flow. Second operand 10 states and 113 transitions. [2024-06-03 18:38:22,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 243 transitions, 3179 flow [2024-06-03 18:38:22,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 243 transitions, 3098 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:22,787 INFO L231 Difference]: Finished difference. Result has 241 places, 226 transitions, 2674 flow [2024-06-03 18:38:22,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2674, PETRI_PLACES=241, PETRI_TRANSITIONS=226} [2024-06-03 18:38:22,788 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-03 18:38:22,788 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 226 transitions, 2674 flow [2024-06-03 18:38:22,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:22,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:22,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:22,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 18:38:22,788 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:22,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash -769848967, now seen corresponding path program 5 times [2024-06-03 18:38:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:22,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889266970] [2024-06-03 18:38:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:22,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:23,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889266970] [2024-06-03 18:38:23,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889266970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:23,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:23,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:23,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289137799] [2024-06-03 18:38:23,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:23,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:23,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:23,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:23,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:23,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:23,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 226 transitions, 2674 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:23,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:23,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:23,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:24,348 INFO L124 PetriNetUnfolderBase]: 626/1102 cut-off events. [2024-06-03 18:38:24,349 INFO L125 PetriNetUnfolderBase]: For 65078/65078 co-relation queries the response was YES. [2024-06-03 18:38:24,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7931 conditions, 1102 events. 626/1102 cut-off events. For 65078/65078 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5445 event pairs, 106 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 7817. Up to 999 conditions per place. [2024-06-03 18:38:24,363 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 215 selfloop transitions, 29 changer transitions 0/246 dead transitions. [2024-06-03 18:38:24,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 246 transitions, 3242 flow [2024-06-03 18:38:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 18:38:24,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-03 18:38:24,365 INFO L175 Difference]: Start difference. First operand has 241 places, 226 transitions, 2674 flow. Second operand 10 states and 111 transitions. [2024-06-03 18:38:24,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 246 transitions, 3242 flow [2024-06-03 18:38:24,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 246 transitions, 3156 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-03 18:38:24,546 INFO L231 Difference]: Finished difference. Result has 245 places, 227 transitions, 2677 flow [2024-06-03 18:38:24,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2677, PETRI_PLACES=245, PETRI_TRANSITIONS=227} [2024-06-03 18:38:24,547 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2024-06-03 18:38:24,547 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 227 transitions, 2677 flow [2024-06-03 18:38:24,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:24,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:24,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:24,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 18:38:24,548 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:24,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1620575625, now seen corresponding path program 1 times [2024-06-03 18:38:24,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:24,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063855904] [2024-06-03 18:38:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:24,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:26,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:26,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063855904] [2024-06-03 18:38:26,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063855904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:26,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:26,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446059196] [2024-06-03 18:38:26,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:26,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:26,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:26,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:26,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 227 transitions, 2677 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:26,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:26,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:26,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:26,776 INFO L124 PetriNetUnfolderBase]: 638/1122 cut-off events. [2024-06-03 18:38:26,776 INFO L125 PetriNetUnfolderBase]: For 67832/67832 co-relation queries the response was YES. [2024-06-03 18:38:26,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8047 conditions, 1122 events. 638/1122 cut-off events. For 67832/67832 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5571 event pairs, 131 based on Foata normal form. 2/1124 useless extension candidates. Maximal degree in co-relation 7933. Up to 1005 conditions per place. [2024-06-03 18:38:26,790 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 217 selfloop transitions, 34 changer transitions 0/253 dead transitions. [2024-06-03 18:38:26,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 3313 flow [2024-06-03 18:38:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:38:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:38:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-03 18:38:26,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-03 18:38:26,791 INFO L175 Difference]: Start difference. First operand has 245 places, 227 transitions, 2677 flow. Second operand 12 states and 128 transitions. [2024-06-03 18:38:26,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 3313 flow [2024-06-03 18:38:26,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 253 transitions, 3181 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-03 18:38:26,968 INFO L231 Difference]: Finished difference. Result has 249 places, 232 transitions, 2703 flow [2024-06-03 18:38:26,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2703, PETRI_PLACES=249, PETRI_TRANSITIONS=232} [2024-06-03 18:38:26,968 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2024-06-03 18:38:26,968 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 232 transitions, 2703 flow [2024-06-03 18:38:26,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:26,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:26,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:26,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 18:38:26,969 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:26,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash 891257418, now seen corresponding path program 1 times [2024-06-03 18:38:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806589017] [2024-06-03 18:38:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:28,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806589017] [2024-06-03 18:38:28,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806589017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:28,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:28,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026749056] [2024-06-03 18:38:28,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:28,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:28,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:28,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 232 transitions, 2703 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:28,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:28,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:28,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:28,614 INFO L124 PetriNetUnfolderBase]: 641/1127 cut-off events. [2024-06-03 18:38:28,614 INFO L125 PetriNetUnfolderBase]: For 66211/66211 co-relation queries the response was YES. [2024-06-03 18:38:28,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1127 events. 641/1127 cut-off events. For 66211/66211 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5567 event pairs, 129 based on Foata normal form. 1/1128 useless extension candidates. Maximal degree in co-relation 7991. Up to 1009 conditions per place. [2024-06-03 18:38:28,628 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 214 selfloop transitions, 37 changer transitions 0/253 dead transitions. [2024-06-03 18:38:28,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 253 transitions, 3303 flow [2024-06-03 18:38:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 18:38:28,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-03 18:38:28,629 INFO L175 Difference]: Start difference. First operand has 249 places, 232 transitions, 2703 flow. Second operand 11 states and 119 transitions. [2024-06-03 18:38:28,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 253 transitions, 3303 flow [2024-06-03 18:38:28,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 253 transitions, 3196 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-03 18:38:28,831 INFO L231 Difference]: Finished difference. Result has 253 places, 234 transitions, 2726 flow [2024-06-03 18:38:28,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2596, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2726, PETRI_PLACES=253, PETRI_TRANSITIONS=234} [2024-06-03 18:38:28,832 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2024-06-03 18:38:28,832 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 234 transitions, 2726 flow [2024-06-03 18:38:28,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:28,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:28,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:28,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 18:38:28,833 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:28,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:28,833 INFO L85 PathProgramCache]: Analyzing trace with hash -962236473, now seen corresponding path program 6 times [2024-06-03 18:38:28,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:28,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605099689] [2024-06-03 18:38:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:28,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:29,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:29,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605099689] [2024-06-03 18:38:29,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605099689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:29,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:29,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:29,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831815458] [2024-06-03 18:38:29,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:29,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:29,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:29,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:29,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 234 transitions, 2726 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:29,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:29,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:29,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:30,428 INFO L124 PetriNetUnfolderBase]: 649/1143 cut-off events. [2024-06-03 18:38:30,428 INFO L125 PetriNetUnfolderBase]: For 71026/71026 co-relation queries the response was YES. [2024-06-03 18:38:30,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8189 conditions, 1143 events. 649/1143 cut-off events. For 71026/71026 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5714 event pairs, 104 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 8073. Up to 1043 conditions per place. [2024-06-03 18:38:30,443 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 227 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-03 18:38:30,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 255 transitions, 3320 flow [2024-06-03 18:38:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:30,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 18:38:30,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:38:30,445 INFO L175 Difference]: Start difference. First operand has 253 places, 234 transitions, 2726 flow. Second operand 10 states and 110 transitions. [2024-06-03 18:38:30,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 255 transitions, 3320 flow [2024-06-03 18:38:30,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 255 transitions, 3224 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-03 18:38:30,673 INFO L231 Difference]: Finished difference. Result has 255 places, 236 transitions, 2727 flow [2024-06-03 18:38:30,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2727, PETRI_PLACES=255, PETRI_TRANSITIONS=236} [2024-06-03 18:38:30,674 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 223 predicate places. [2024-06-03 18:38:30,674 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 236 transitions, 2727 flow [2024-06-03 18:38:30,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:30,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:30,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:30,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 18:38:30,674 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:30,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash -964110423, now seen corresponding path program 7 times [2024-06-03 18:38:30,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:30,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730100663] [2024-06-03 18:38:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:30,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:31,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:31,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730100663] [2024-06-03 18:38:31,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730100663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:31,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:31,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:31,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397681697] [2024-06-03 18:38:31,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:31,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:31,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:31,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:31,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:31,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 236 transitions, 2727 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:31,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:31,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:31,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:32,185 INFO L124 PetriNetUnfolderBase]: 662/1170 cut-off events. [2024-06-03 18:38:32,186 INFO L125 PetriNetUnfolderBase]: For 73867/73867 co-relation queries the response was YES. [2024-06-03 18:38:32,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8316 conditions, 1170 events. 662/1170 cut-off events. For 73867/73867 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5919 event pairs, 102 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 8198. Up to 1052 conditions per place. [2024-06-03 18:38:32,194 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 231 selfloop transitions, 28 changer transitions 0/261 dead transitions. [2024-06-03 18:38:32,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 261 transitions, 3350 flow [2024-06-03 18:38:32,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 18:38:32,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-03 18:38:32,195 INFO L175 Difference]: Start difference. First operand has 255 places, 236 transitions, 2727 flow. Second operand 11 states and 120 transitions. [2024-06-03 18:38:32,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 261 transitions, 3350 flow [2024-06-03 18:38:32,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 261 transitions, 3277 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 18:38:32,426 INFO L231 Difference]: Finished difference. Result has 261 places, 239 transitions, 2770 flow [2024-06-03 18:38:32,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2770, PETRI_PLACES=261, PETRI_TRANSITIONS=239} [2024-06-03 18:38:32,426 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2024-06-03 18:38:32,426 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 239 transitions, 2770 flow [2024-06-03 18:38:32,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:32,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:32,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:32,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 18:38:32,427 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:32,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -875390841, now seen corresponding path program 2 times [2024-06-03 18:38:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:32,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164382407] [2024-06-03 18:38:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:32,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:33,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164382407] [2024-06-03 18:38:33,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164382407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:33,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:33,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857501412] [2024-06-03 18:38:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:33,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:33,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:34,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:34,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 239 transitions, 2770 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:34,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:34,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:34,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:34,595 INFO L124 PetriNetUnfolderBase]: 668/1180 cut-off events. [2024-06-03 18:38:34,595 INFO L125 PetriNetUnfolderBase]: For 76056/76056 co-relation queries the response was YES. [2024-06-03 18:38:34,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 1180 events. 668/1180 cut-off events. For 76056/76056 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5973 event pairs, 108 based on Foata normal form. 2/1182 useless extension candidates. Maximal degree in co-relation 8314. Up to 1075 conditions per place. [2024-06-03 18:38:34,606 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 231 selfloop transitions, 29 changer transitions 0/262 dead transitions. [2024-06-03 18:38:34,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 262 transitions, 3410 flow [2024-06-03 18:38:34,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 18:38:34,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:38:34,607 INFO L175 Difference]: Start difference. First operand has 261 places, 239 transitions, 2770 flow. Second operand 11 states and 121 transitions. [2024-06-03 18:38:34,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 262 transitions, 3410 flow [2024-06-03 18:38:34,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 262 transitions, 3331 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 18:38:34,850 INFO L231 Difference]: Finished difference. Result has 266 places, 242 transitions, 2824 flow [2024-06-03 18:38:34,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2691, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2824, PETRI_PLACES=266, PETRI_TRANSITIONS=242} [2024-06-03 18:38:34,851 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 234 predicate places. [2024-06-03 18:38:34,851 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 242 transitions, 2824 flow [2024-06-03 18:38:34,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:34,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:34,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:34,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 18:38:34,851 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:34,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:34,851 INFO L85 PathProgramCache]: Analyzing trace with hash -875540788, now seen corresponding path program 2 times [2024-06-03 18:38:34,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:34,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037668114] [2024-06-03 18:38:34,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:34,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:35,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037668114] [2024-06-03 18:38:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037668114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:35,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:35,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250999260] [2024-06-03 18:38:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:35,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:36,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:36,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 242 transitions, 2824 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:36,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:36,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:36,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:36,530 INFO L124 PetriNetUnfolderBase]: 666/1177 cut-off events. [2024-06-03 18:38:36,530 INFO L125 PetriNetUnfolderBase]: For 72882/72882 co-relation queries the response was YES. [2024-06-03 18:38:36,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 1177 events. 666/1177 cut-off events. For 72882/72882 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5971 event pairs, 108 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 8233. Up to 1071 conditions per place. [2024-06-03 18:38:36,541 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 226 selfloop transitions, 32 changer transitions 0/260 dead transitions. [2024-06-03 18:38:36,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 260 transitions, 3394 flow [2024-06-03 18:38:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 18:38:36,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-03 18:38:36,543 INFO L175 Difference]: Start difference. First operand has 266 places, 242 transitions, 2824 flow. Second operand 10 states and 112 transitions. [2024-06-03 18:38:36,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 260 transitions, 3394 flow [2024-06-03 18:38:36,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 260 transitions, 3276 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-03 18:38:36,786 INFO L231 Difference]: Finished difference. Result has 269 places, 242 transitions, 2778 flow [2024-06-03 18:38:36,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2778, PETRI_PLACES=269, PETRI_TRANSITIONS=242} [2024-06-03 18:38:36,787 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 237 predicate places. [2024-06-03 18:38:36,787 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 242 transitions, 2778 flow [2024-06-03 18:38:36,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:36,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:36,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:36,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 18:38:36,787 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:36,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1596481969, now seen corresponding path program 8 times [2024-06-03 18:38:36,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:36,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675033171] [2024-06-03 18:38:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:36,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:37,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:37,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675033171] [2024-06-03 18:38:37,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675033171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:37,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:37,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:37,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714568516] [2024-06-03 18:38:37,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:37,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:37,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:37,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:37,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:37,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 242 transitions, 2778 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:37,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:37,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:37,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:38,394 INFO L124 PetriNetUnfolderBase]: 670/1185 cut-off events. [2024-06-03 18:38:38,395 INFO L125 PetriNetUnfolderBase]: For 77410/77410 co-relation queries the response was YES. [2024-06-03 18:38:38,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8387 conditions, 1185 events. 670/1185 cut-off events. For 77410/77410 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6032 event pairs, 103 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 8264. Up to 1026 conditions per place. [2024-06-03 18:38:38,406 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 213 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2024-06-03 18:38:38,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 260 transitions, 3372 flow [2024-06-03 18:38:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 18:38:38,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-03 18:38:38,407 INFO L175 Difference]: Start difference. First operand has 269 places, 242 transitions, 2778 flow. Second operand 10 states and 114 transitions. [2024-06-03 18:38:38,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 260 transitions, 3372 flow [2024-06-03 18:38:38,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 260 transitions, 3298 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:38,659 INFO L231 Difference]: Finished difference. Result has 271 places, 243 transitions, 2830 flow [2024-06-03 18:38:38,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2830, PETRI_PLACES=271, PETRI_TRANSITIONS=243} [2024-06-03 18:38:38,659 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 239 predicate places. [2024-06-03 18:38:38,659 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 243 transitions, 2830 flow [2024-06-03 18:38:38,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:38,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:38,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:38,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 18:38:38,660 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:38,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:38,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1596485689, now seen corresponding path program 9 times [2024-06-03 18:38:38,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:38,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424571661] [2024-06-03 18:38:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:38,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:39,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:39,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424571661] [2024-06-03 18:38:39,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424571661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:39,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:39,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:39,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666500260] [2024-06-03 18:38:39,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:39,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:39,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:39,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:39,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:39,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 243 transitions, 2830 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:39,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:39,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:39,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:40,203 INFO L124 PetriNetUnfolderBase]: 678/1201 cut-off events. [2024-06-03 18:38:40,203 INFO L125 PetriNetUnfolderBase]: For 80118/80118 co-relation queries the response was YES. [2024-06-03 18:38:40,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8544 conditions, 1201 events. 678/1201 cut-off events. For 80118/80118 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6143 event pairs, 101 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 8420. Up to 1042 conditions per place. [2024-06-03 18:38:40,214 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 216 selfloop transitions, 44 changer transitions 0/262 dead transitions. [2024-06-03 18:38:40,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 262 transitions, 3431 flow [2024-06-03 18:38:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 18:38:40,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-03 18:38:40,215 INFO L175 Difference]: Start difference. First operand has 271 places, 243 transitions, 2830 flow. Second operand 10 states and 113 transitions. [2024-06-03 18:38:40,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 262 transitions, 3431 flow [2024-06-03 18:38:40,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 262 transitions, 3305 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:40,468 INFO L231 Difference]: Finished difference. Result has 274 places, 245 transitions, 2837 flow [2024-06-03 18:38:40,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2837, PETRI_PLACES=274, PETRI_TRANSITIONS=245} [2024-06-03 18:38:40,469 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 242 predicate places. [2024-06-03 18:38:40,469 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 245 transitions, 2837 flow [2024-06-03 18:38:40,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:40,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:40,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:40,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 18:38:40,469 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:40,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1590975439, now seen corresponding path program 10 times [2024-06-03 18:38:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:40,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107464726] [2024-06-03 18:38:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:40,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:41,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:41,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107464726] [2024-06-03 18:38:41,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107464726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:41,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:41,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:41,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353091003] [2024-06-03 18:38:41,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:41,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:41,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:41,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:41,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:41,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 245 transitions, 2837 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:41,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:41,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:41,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:41,919 INFO L124 PetriNetUnfolderBase]: 682/1209 cut-off events. [2024-06-03 18:38:41,919 INFO L125 PetriNetUnfolderBase]: For 80265/80265 co-relation queries the response was YES. [2024-06-03 18:38:41,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8564 conditions, 1209 events. 682/1209 cut-off events. For 80265/80265 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6201 event pairs, 95 based on Foata normal form. 2/1211 useless extension candidates. Maximal degree in co-relation 8438. Up to 1011 conditions per place. [2024-06-03 18:38:41,930 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 205 selfloop transitions, 58 changer transitions 0/265 dead transitions. [2024-06-03 18:38:41,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 265 transitions, 3455 flow [2024-06-03 18:38:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:38:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:38:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 18:38:41,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-03 18:38:41,931 INFO L175 Difference]: Start difference. First operand has 274 places, 245 transitions, 2837 flow. Second operand 10 states and 116 transitions. [2024-06-03 18:38:41,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 265 transitions, 3455 flow [2024-06-03 18:38:42,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 265 transitions, 3334 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:42,188 INFO L231 Difference]: Finished difference. Result has 276 places, 246 transitions, 2872 flow [2024-06-03 18:38:42,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2872, PETRI_PLACES=276, PETRI_TRANSITIONS=246} [2024-06-03 18:38:42,188 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 244 predicate places. [2024-06-03 18:38:42,188 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 246 transitions, 2872 flow [2024-06-03 18:38:42,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:42,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:42,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:42,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 18:38:42,189 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:42,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:42,189 INFO L85 PathProgramCache]: Analyzing trace with hash 663940545, now seen corresponding path program 3 times [2024-06-03 18:38:42,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:42,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013047179] [2024-06-03 18:38:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:42,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:43,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:43,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013047179] [2024-06-03 18:38:43,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013047179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:43,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:43,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:43,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329783327] [2024-06-03 18:38:43,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:43,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:43,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:43,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:43,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:43,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 246 transitions, 2872 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:43,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:43,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:43,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:44,552 INFO L124 PetriNetUnfolderBase]: 688/1219 cut-off events. [2024-06-03 18:38:44,552 INFO L125 PetriNetUnfolderBase]: For 82413/82413 co-relation queries the response was YES. [2024-06-03 18:38:44,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8669 conditions, 1219 events. 688/1219 cut-off events. For 82413/82413 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6259 event pairs, 95 based on Foata normal form. 2/1221 useless extension candidates. Maximal degree in co-relation 8543. Up to 1011 conditions per place. [2024-06-03 18:38:44,561 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 206 selfloop transitions, 61 changer transitions 0/269 dead transitions. [2024-06-03 18:38:44,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 269 transitions, 3530 flow [2024-06-03 18:38:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 18:38:44,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-03 18:38:44,562 INFO L175 Difference]: Start difference. First operand has 276 places, 246 transitions, 2872 flow. Second operand 11 states and 126 transitions. [2024-06-03 18:38:44,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 269 transitions, 3530 flow [2024-06-03 18:38:44,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 269 transitions, 3384 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:44,853 INFO L231 Difference]: Finished difference. Result has 279 places, 248 transitions, 2915 flow [2024-06-03 18:38:44,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2915, PETRI_PLACES=279, PETRI_TRANSITIONS=248} [2024-06-03 18:38:44,853 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2024-06-03 18:38:44,853 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 248 transitions, 2915 flow [2024-06-03 18:38:44,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:44,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:44,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:44,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 18:38:44,854 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:44,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:44,854 INFO L85 PathProgramCache]: Analyzing trace with hash 658578165, now seen corresponding path program 4 times [2024-06-03 18:38:44,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:44,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122053715] [2024-06-03 18:38:44,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:44,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:46,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:46,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122053715] [2024-06-03 18:38:46,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122053715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:46,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:46,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:46,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461350361] [2024-06-03 18:38:46,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:46,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:46,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:46,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:46,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:46,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 248 transitions, 2915 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:46,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:46,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:46,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:46,963 INFO L124 PetriNetUnfolderBase]: 694/1229 cut-off events. [2024-06-03 18:38:46,963 INFO L125 PetriNetUnfolderBase]: For 84417/84417 co-relation queries the response was YES. [2024-06-03 18:38:46,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8777 conditions, 1229 events. 694/1229 cut-off events. For 84417/84417 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6317 event pairs, 105 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 8650. Up to 1060 conditions per place. [2024-06-03 18:38:46,974 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 219 selfloop transitions, 48 changer transitions 0/269 dead transitions. [2024-06-03 18:38:46,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 269 transitions, 3567 flow [2024-06-03 18:38:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 18:38:46,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-03 18:38:46,975 INFO L175 Difference]: Start difference. First operand has 279 places, 248 transitions, 2915 flow. Second operand 11 states and 124 transitions. [2024-06-03 18:38:46,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 269 transitions, 3567 flow [2024-06-03 18:38:47,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 269 transitions, 3394 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-03 18:38:47,258 INFO L231 Difference]: Finished difference. Result has 281 places, 250 transitions, 2909 flow [2024-06-03 18:38:47,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2909, PETRI_PLACES=281, PETRI_TRANSITIONS=250} [2024-06-03 18:38:47,258 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 249 predicate places. [2024-06-03 18:38:47,259 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 250 transitions, 2909 flow [2024-06-03 18:38:47,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:47,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:47,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:47,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 18:38:47,259 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:47,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash 664150074, now seen corresponding path program 1 times [2024-06-03 18:38:47,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:47,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131131775] [2024-06-03 18:38:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:47,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:48,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:48,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131131775] [2024-06-03 18:38:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131131775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:48,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:48,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:48,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032025861] [2024-06-03 18:38:48,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:48,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:48,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:48,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:48,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:48,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:48,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 250 transitions, 2909 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:48,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:48,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:48,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:49,341 INFO L124 PetriNetUnfolderBase]: 692/1226 cut-off events. [2024-06-03 18:38:49,341 INFO L125 PetriNetUnfolderBase]: For 80565/80565 co-relation queries the response was YES. [2024-06-03 18:38:49,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8629 conditions, 1226 events. 692/1226 cut-off events. For 80565/80565 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6340 event pairs, 178 based on Foata normal form. 1/1227 useless extension candidates. Maximal degree in co-relation 8501. Up to 1119 conditions per place. [2024-06-03 18:38:49,353 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 227 selfloop transitions, 38 changer transitions 0/267 dead transitions. [2024-06-03 18:38:49,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 267 transitions, 3495 flow [2024-06-03 18:38:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 18:38:49,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-03 18:38:49,354 INFO L175 Difference]: Start difference. First operand has 281 places, 250 transitions, 2909 flow. Second operand 11 states and 118 transitions. [2024-06-03 18:38:49,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 267 transitions, 3495 flow [2024-06-03 18:38:49,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 267 transitions, 3332 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-03 18:38:49,679 INFO L231 Difference]: Finished difference. Result has 283 places, 250 transitions, 2830 flow [2024-06-03 18:38:49,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2830, PETRI_PLACES=283, PETRI_TRANSITIONS=250} [2024-06-03 18:38:49,680 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-03 18:38:49,680 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 250 transitions, 2830 flow [2024-06-03 18:38:49,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:49,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:49,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:49,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 18:38:49,680 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:49,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:49,681 INFO L85 PathProgramCache]: Analyzing trace with hash -954293383, now seen corresponding path program 5 times [2024-06-03 18:38:49,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:49,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530429081] [2024-06-03 18:38:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:49,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:51,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530429081] [2024-06-03 18:38:51,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530429081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147251877] [2024-06-03 18:38:51,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:51,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:51,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:51,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 250 transitions, 2830 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:51,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:51,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:51,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:51,966 INFO L124 PetriNetUnfolderBase]: 708/1252 cut-off events. [2024-06-03 18:38:51,966 INFO L125 PetriNetUnfolderBase]: For 92003/92003 co-relation queries the response was YES. [2024-06-03 18:38:51,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8972 conditions, 1252 events. 708/1252 cut-off events. For 92003/92003 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6490 event pairs, 94 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 8843. Up to 937 conditions per place. [2024-06-03 18:38:51,978 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 189 selfloop transitions, 87 changer transitions 0/278 dead transitions. [2024-06-03 18:38:51,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 278 transitions, 3748 flow [2024-06-03 18:38:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 18:38:51,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-03 18:38:51,979 INFO L175 Difference]: Start difference. First operand has 283 places, 250 transitions, 2830 flow. Second operand 11 states and 131 transitions. [2024-06-03 18:38:51,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 278 transitions, 3748 flow [2024-06-03 18:38:52,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 278 transitions, 3616 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-03 18:38:52,284 INFO L231 Difference]: Finished difference. Result has 283 places, 254 transitions, 3018 flow [2024-06-03 18:38:52,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3018, PETRI_PLACES=283, PETRI_TRANSITIONS=254} [2024-06-03 18:38:52,284 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-03 18:38:52,284 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 254 transitions, 3018 flow [2024-06-03 18:38:52,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:52,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:52,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:52,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 18:38:52,285 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:52,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash 664142355, now seen corresponding path program 6 times [2024-06-03 18:38:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:52,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223727375] [2024-06-03 18:38:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:53,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:53,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223727375] [2024-06-03 18:38:53,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223727375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:53,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:53,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:53,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817794003] [2024-06-03 18:38:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:53,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:53,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:53,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:53,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:53,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:53,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 254 transitions, 3018 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:53,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:53,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:53,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:54,380 INFO L124 PetriNetUnfolderBase]: 709/1254 cut-off events. [2024-06-03 18:38:54,380 INFO L125 PetriNetUnfolderBase]: For 87839/87839 co-relation queries the response was YES. [2024-06-03 18:38:54,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 1254 events. 709/1254 cut-off events. For 87839/87839 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6490 event pairs, 94 based on Foata normal form. 2/1256 useless extension candidates. Maximal degree in co-relation 8902. Up to 940 conditions per place. [2024-06-03 18:38:54,392 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 194 selfloop transitions, 83 changer transitions 0/279 dead transitions. [2024-06-03 18:38:54,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 279 transitions, 3866 flow [2024-06-03 18:38:54,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:38:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:38:54,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 18:38:54,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-03 18:38:54,393 INFO L175 Difference]: Start difference. First operand has 283 places, 254 transitions, 3018 flow. Second operand 11 states and 131 transitions. [2024-06-03 18:38:54,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 279 transitions, 3866 flow [2024-06-03 18:38:54,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 3689 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-03 18:38:54,724 INFO L231 Difference]: Finished difference. Result has 287 places, 256 transitions, 3080 flow [2024-06-03 18:38:54,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3080, PETRI_PLACES=287, PETRI_TRANSITIONS=256} [2024-06-03 18:38:54,724 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-03 18:38:54,725 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 256 transitions, 3080 flow [2024-06-03 18:38:54,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:54,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:54,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:54,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 18:38:54,725 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:54,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:54,725 INFO L85 PathProgramCache]: Analyzing trace with hash 463672653, now seen corresponding path program 1 times [2024-06-03 18:38:54,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:54,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118593287] [2024-06-03 18:38:54,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:54,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:56,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:56,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118593287] [2024-06-03 18:38:56,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118593287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:56,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:56,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:38:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525053015] [2024-06-03 18:38:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:56,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:38:56,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:38:56,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:38:56,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:56,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 256 transitions, 3080 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:56,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:56,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:56,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:57,190 INFO L124 PetriNetUnfolderBase]: 717/1271 cut-off events. [2024-06-03 18:38:57,191 INFO L125 PetriNetUnfolderBase]: For 95481/95481 co-relation queries the response was YES. [2024-06-03 18:38:57,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1271 events. 717/1271 cut-off events. For 95481/95481 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6677 event pairs, 169 based on Foata normal form. 4/1275 useless extension candidates. Maximal degree in co-relation 9038. Up to 1159 conditions per place. [2024-06-03 18:38:57,210 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 241 selfloop transitions, 34 changer transitions 0/277 dead transitions. [2024-06-03 18:38:57,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 277 transitions, 3714 flow [2024-06-03 18:38:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:38:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:38:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-03 18:38:57,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-03 18:38:57,212 INFO L175 Difference]: Start difference. First operand has 287 places, 256 transitions, 3080 flow. Second operand 12 states and 125 transitions. [2024-06-03 18:38:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 277 transitions, 3714 flow [2024-06-03 18:38:57,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 277 transitions, 3531 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-03 18:38:57,531 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 2989 flow [2024-06-03 18:38:57,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2989, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2024-06-03 18:38:57,532 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2024-06-03 18:38:57,532 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 2989 flow [2024-06-03 18:38:57,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:57,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:57,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:57,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 18:38:57,532 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:57,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1888056125, now seen corresponding path program 11 times [2024-06-03 18:38:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707492095] [2024-06-03 18:38:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:38:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:38:58,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:38:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707492095] [2024-06-03 18:38:58,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707492095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:38:58,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:38:58,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:38:58,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277436762] [2024-06-03 18:38:58,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:38:58,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:38:58,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:38:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:38:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:38:58,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:38:58,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 2989 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:58,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:38:58,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:38:58,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:38:58,998 INFO L124 PetriNetUnfolderBase]: 721/1278 cut-off events. [2024-06-03 18:38:58,999 INFO L125 PetriNetUnfolderBase]: For 91708/91708 co-relation queries the response was YES. [2024-06-03 18:38:59,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9119 conditions, 1278 events. 721/1278 cut-off events. For 91708/91708 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6672 event pairs, 151 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 8986. Up to 1119 conditions per place. [2024-06-03 18:38:59,011 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 225 selfloop transitions, 46 changer transitions 0/273 dead transitions. [2024-06-03 18:38:59,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 273 transitions, 3607 flow [2024-06-03 18:38:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:38:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:38:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 18:38:59,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:38:59,012 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 2989 flow. Second operand 9 states and 99 transitions. [2024-06-03 18:38:59,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 273 transitions, 3607 flow [2024-06-03 18:38:59,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 273 transitions, 3525 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-03 18:38:59,351 INFO L231 Difference]: Finished difference. Result has 290 places, 258 transitions, 3048 flow [2024-06-03 18:38:59,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3048, PETRI_PLACES=290, PETRI_TRANSITIONS=258} [2024-06-03 18:38:59,351 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2024-06-03 18:38:59,351 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 258 transitions, 3048 flow [2024-06-03 18:38:59,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:38:59,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:38:59,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:38:59,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 18:38:59,352 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:38:59,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:38:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1002076483, now seen corresponding path program 12 times [2024-06-03 18:38:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:38:59,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401564124] [2024-06-03 18:38:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:38:59,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:38:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:00,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:00,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401564124] [2024-06-03 18:39:00,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401564124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:00,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:00,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290655309] [2024-06-03 18:39:00,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:00,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:00,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:00,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:00,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:00,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 258 transitions, 3048 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:00,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:00,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:00,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:00,909 INFO L124 PetriNetUnfolderBase]: 731/1296 cut-off events. [2024-06-03 18:39:00,909 INFO L125 PetriNetUnfolderBase]: For 94522/94522 co-relation queries the response was YES. [2024-06-03 18:39:00,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9339 conditions, 1296 events. 731/1296 cut-off events. For 94522/94522 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6789 event pairs, 124 based on Foata normal form. 2/1298 useless extension candidates. Maximal degree in co-relation 9205. Up to 1122 conditions per place. [2024-06-03 18:39:00,922 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 222 selfloop transitions, 52 changer transitions 0/276 dead transitions. [2024-06-03 18:39:00,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 276 transitions, 3723 flow [2024-06-03 18:39:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:39:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:39:00,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 18:39:00,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-03 18:39:00,923 INFO L175 Difference]: Start difference. First operand has 290 places, 258 transitions, 3048 flow. Second operand 9 states and 101 transitions. [2024-06-03 18:39:00,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 276 transitions, 3723 flow [2024-06-03 18:39:01,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 276 transitions, 3598 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-03 18:39:01,276 INFO L231 Difference]: Finished difference. Result has 292 places, 263 transitions, 3132 flow [2024-06-03 18:39:01,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3132, PETRI_PLACES=292, PETRI_TRANSITIONS=263} [2024-06-03 18:39:01,276 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 260 predicate places. [2024-06-03 18:39:01,276 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 263 transitions, 3132 flow [2024-06-03 18:39:01,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:01,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:01,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:01,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 18:39:01,277 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:01,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash -682121469, now seen corresponding path program 13 times [2024-06-03 18:39:01,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:01,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221992341] [2024-06-03 18:39:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:02,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:02,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221992341] [2024-06-03 18:39:02,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221992341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:02,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:02,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:39:02,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191772254] [2024-06-03 18:39:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:02,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:39:02,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:02,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:39:02,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:39:02,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:02,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 263 transitions, 3132 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:02,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:02,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:02,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:02,628 INFO L124 PetriNetUnfolderBase]: 735/1304 cut-off events. [2024-06-03 18:39:02,628 INFO L125 PetriNetUnfolderBase]: For 92300/92300 co-relation queries the response was YES. [2024-06-03 18:39:02,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9357 conditions, 1304 events. 735/1304 cut-off events. For 92300/92300 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6838 event pairs, 107 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 9222. Up to 1069 conditions per place. [2024-06-03 18:39:02,647 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 233 selfloop transitions, 46 changer transitions 0/281 dead transitions. [2024-06-03 18:39:02,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 281 transitions, 3768 flow [2024-06-03 18:39:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 18:39:02,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-03 18:39:02,649 INFO L175 Difference]: Start difference. First operand has 292 places, 263 transitions, 3132 flow. Second operand 10 states and 106 transitions. [2024-06-03 18:39:02,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 281 transitions, 3768 flow [2024-06-03 18:39:03,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 281 transitions, 3661 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-03 18:39:03,021 INFO L231 Difference]: Finished difference. Result has 297 places, 264 transitions, 3165 flow [2024-06-03 18:39:03,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3165, PETRI_PLACES=297, PETRI_TRANSITIONS=264} [2024-06-03 18:39:03,021 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-03 18:39:03,021 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 264 transitions, 3165 flow [2024-06-03 18:39:03,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:03,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:03,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:03,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 18:39:03,021 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:03,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:03,022 INFO L85 PathProgramCache]: Analyzing trace with hash -593401887, now seen corresponding path program 7 times [2024-06-03 18:39:03,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:03,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038261161] [2024-06-03 18:39:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:03,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:04,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:04,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038261161] [2024-06-03 18:39:04,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038261161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:04,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:04,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447794576] [2024-06-03 18:39:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:04,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:04,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:04,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 264 transitions, 3165 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:04,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:04,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:04,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:05,331 INFO L124 PetriNetUnfolderBase]: 741/1314 cut-off events. [2024-06-03 18:39:05,331 INFO L125 PetriNetUnfolderBase]: For 89404/89404 co-relation queries the response was YES. [2024-06-03 18:39:05,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9429 conditions, 1314 events. 741/1314 cut-off events. For 89404/89404 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6895 event pairs, 153 based on Foata normal form. 2/1316 useless extension candidates. Maximal degree in co-relation 9293. Up to 1149 conditions per place. [2024-06-03 18:39:05,343 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 235 selfloop transitions, 46 changer transitions 0/283 dead transitions. [2024-06-03 18:39:05,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 283 transitions, 3843 flow [2024-06-03 18:39:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 18:39:05,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-03 18:39:05,344 INFO L175 Difference]: Start difference. First operand has 297 places, 264 transitions, 3165 flow. Second operand 10 states and 109 transitions. [2024-06-03 18:39:05,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 283 transitions, 3843 flow [2024-06-03 18:39:05,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 283 transitions, 3723 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 18:39:05,655 INFO L231 Difference]: Finished difference. Result has 299 places, 266 transitions, 3220 flow [2024-06-03 18:39:05,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3045, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3220, PETRI_PLACES=299, PETRI_TRANSITIONS=266} [2024-06-03 18:39:05,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-03 18:39:05,656 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 266 transitions, 3220 flow [2024-06-03 18:39:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:05,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:05,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:05,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 18:39:05,656 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:05,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:05,656 INFO L85 PathProgramCache]: Analyzing trace with hash -593551834, now seen corresponding path program 3 times [2024-06-03 18:39:05,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:05,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129350388] [2024-06-03 18:39:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:05,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:06,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:06,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129350388] [2024-06-03 18:39:06,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129350388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:06,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:06,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:06,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010529005] [2024-06-03 18:39:06,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:06,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:06,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:06,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:06,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:06,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 266 transitions, 3220 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:06,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:06,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:06,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:07,297 INFO L124 PetriNetUnfolderBase]: 739/1311 cut-off events. [2024-06-03 18:39:07,297 INFO L125 PetriNetUnfolderBase]: For 79027/79027 co-relation queries the response was YES. [2024-06-03 18:39:07,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9254 conditions, 1311 events. 739/1311 cut-off events. For 79027/79027 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6911 event pairs, 151 based on Foata normal form. 1/1312 useless extension candidates. Maximal degree in co-relation 9117. Up to 1143 conditions per place. [2024-06-03 18:39:07,311 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 224 selfloop transitions, 55 changer transitions 0/281 dead transitions. [2024-06-03 18:39:07,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 281 transitions, 3820 flow [2024-06-03 18:39:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:39:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:39:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 18:39:07,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-03 18:39:07,312 INFO L175 Difference]: Start difference. First operand has 299 places, 266 transitions, 3220 flow. Second operand 9 states and 100 transitions. [2024-06-03 18:39:07,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 281 transitions, 3820 flow [2024-06-03 18:39:07,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 281 transitions, 3671 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-03 18:39:07,679 INFO L231 Difference]: Finished difference. Result has 300 places, 266 transitions, 3201 flow [2024-06-03 18:39:07,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3201, PETRI_PLACES=300, PETRI_TRANSITIONS=266} [2024-06-03 18:39:07,679 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-03 18:39:07,679 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 266 transitions, 3201 flow [2024-06-03 18:39:07,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:07,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:07,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:07,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 18:39:07,680 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:07,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:07,680 INFO L85 PathProgramCache]: Analyzing trace with hash 290220627, now seen corresponding path program 14 times [2024-06-03 18:39:07,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:07,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368508735] [2024-06-03 18:39:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:07,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:08,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:08,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368508735] [2024-06-03 18:39:08,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368508735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:08,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:08,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:08,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150770506] [2024-06-03 18:39:08,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:08,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:08,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:08,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 266 transitions, 3201 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:08,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:08,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:08,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:09,178 INFO L124 PetriNetUnfolderBase]: 743/1319 cut-off events. [2024-06-03 18:39:09,178 INFO L125 PetriNetUnfolderBase]: For 83594/83594 co-relation queries the response was YES. [2024-06-03 18:39:09,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 1319 events. 743/1319 cut-off events. For 83594/83594 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6937 event pairs, 95 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 9179. Up to 1069 conditions per place. [2024-06-03 18:39:09,191 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 208 selfloop transitions, 73 changer transitions 0/283 dead transitions. [2024-06-03 18:39:09,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 283 transitions, 3839 flow [2024-06-03 18:39:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:39:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:39:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 18:39:09,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-03 18:39:09,192 INFO L175 Difference]: Start difference. First operand has 300 places, 266 transitions, 3201 flow. Second operand 9 states and 104 transitions. [2024-06-03 18:39:09,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 283 transitions, 3839 flow [2024-06-03 18:39:09,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 283 transitions, 3673 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-03 18:39:09,577 INFO L231 Difference]: Finished difference. Result has 299 places, 267 transitions, 3217 flow [2024-06-03 18:39:09,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3217, PETRI_PLACES=299, PETRI_TRANSITIONS=267} [2024-06-03 18:39:09,578 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-03 18:39:09,578 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 267 transitions, 3217 flow [2024-06-03 18:39:09,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:09,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:09,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:09,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 18:39:09,578 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:09,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:09,579 INFO L85 PathProgramCache]: Analyzing trace with hash 290436108, now seen corresponding path program 2 times [2024-06-03 18:39:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:09,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243828785] [2024-06-03 18:39:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:09,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:11,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:11,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243828785] [2024-06-03 18:39:11,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243828785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:11,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:11,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:11,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227653444] [2024-06-03 18:39:11,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:11,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:11,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:11,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:11,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:11,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:11,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 267 transitions, 3217 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:11,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:11,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:11,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:12,042 INFO L124 PetriNetUnfolderBase]: 746/1324 cut-off events. [2024-06-03 18:39:12,042 INFO L125 PetriNetUnfolderBase]: For 79733/79733 co-relation queries the response was YES. [2024-06-03 18:39:12,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9350 conditions, 1324 events. 746/1324 cut-off events. For 79733/79733 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7013 event pairs, 183 based on Foata normal form. 1/1325 useless extension candidates. Maximal degree in co-relation 9213. Up to 1169 conditions per place. [2024-06-03 18:39:12,056 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 224 selfloop transitions, 58 changer transitions 0/284 dead transitions. [2024-06-03 18:39:12,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 284 transitions, 3883 flow [2024-06-03 18:39:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 18:39:12,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-03 18:39:12,057 INFO L175 Difference]: Start difference. First operand has 299 places, 267 transitions, 3217 flow. Second operand 10 states and 108 transitions. [2024-06-03 18:39:12,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 284 transitions, 3883 flow [2024-06-03 18:39:12,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 284 transitions, 3713 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 18:39:12,460 INFO L231 Difference]: Finished difference. Result has 302 places, 269 transitions, 3233 flow [2024-06-03 18:39:12,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3233, PETRI_PLACES=302, PETRI_TRANSITIONS=269} [2024-06-03 18:39:12,461 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-03 18:39:12,461 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 269 transitions, 3233 flow [2024-06-03 18:39:12,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:12,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:12,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:12,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 18:39:12,461 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:12,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1332927041, now seen corresponding path program 15 times [2024-06-03 18:39:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:12,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107864663] [2024-06-03 18:39:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:13,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:13,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107864663] [2024-06-03 18:39:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107864663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:13,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:13,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:39:13,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067667986] [2024-06-03 18:39:13,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:13,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:39:13,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:13,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:39:13,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:39:13,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:13,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 269 transitions, 3233 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:13,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:13,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:13,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:13,945 INFO L124 PetriNetUnfolderBase]: 750/1332 cut-off events. [2024-06-03 18:39:13,945 INFO L125 PetriNetUnfolderBase]: For 82227/82227 co-relation queries the response was YES. [2024-06-03 18:39:13,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9340 conditions, 1332 events. 750/1332 cut-off events. For 82227/82227 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7029 event pairs, 119 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 9202. Up to 1153 conditions per place. [2024-06-03 18:39:13,959 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 229 selfloop transitions, 53 changer transitions 0/284 dead transitions. [2024-06-03 18:39:13,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 284 transitions, 3863 flow [2024-06-03 18:39:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:39:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:39:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 18:39:13,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-03 18:39:13,960 INFO L175 Difference]: Start difference. First operand has 302 places, 269 transitions, 3233 flow. Second operand 9 states and 102 transitions. [2024-06-03 18:39:13,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 284 transitions, 3863 flow [2024-06-03 18:39:14,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 284 transitions, 3711 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-03 18:39:14,256 INFO L231 Difference]: Finished difference. Result has 302 places, 270 transitions, 3223 flow [2024-06-03 18:39:14,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3223, PETRI_PLACES=302, PETRI_TRANSITIONS=270} [2024-06-03 18:39:14,257 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-03 18:39:14,257 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 270 transitions, 3223 flow [2024-06-03 18:39:14,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:14,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:14,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:14,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 18:39:14,258 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:14,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1308778723, now seen corresponding path program 8 times [2024-06-03 18:39:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103722461] [2024-06-03 18:39:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:14,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:15,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:15,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103722461] [2024-06-03 18:39:15,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103722461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:15,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:15,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:15,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347286096] [2024-06-03 18:39:15,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:15,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:15,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:15,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:15,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:15,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:15,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 270 transitions, 3223 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:15,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:15,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:15,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:16,425 INFO L124 PetriNetUnfolderBase]: 776/1374 cut-off events. [2024-06-03 18:39:16,425 INFO L125 PetriNetUnfolderBase]: For 93136/93136 co-relation queries the response was YES. [2024-06-03 18:39:16,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10063 conditions, 1374 events. 776/1374 cut-off events. For 93136/93136 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7244 event pairs, 96 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 9925. Up to 913 conditions per place. [2024-06-03 18:39:16,438 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 180 selfloop transitions, 115 changer transitions 0/297 dead transitions. [2024-06-03 18:39:16,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 297 transitions, 4391 flow [2024-06-03 18:39:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 18:39:16,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:39:16,439 INFO L175 Difference]: Start difference. First operand has 302 places, 270 transitions, 3223 flow. Second operand 10 states and 120 transitions. [2024-06-03 18:39:16,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 297 transitions, 4391 flow [2024-06-03 18:39:16,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 297 transitions, 4257 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 18:39:16,787 INFO L231 Difference]: Finished difference. Result has 305 places, 276 transitions, 3551 flow [2024-06-03 18:39:16,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3551, PETRI_PLACES=305, PETRI_TRANSITIONS=276} [2024-06-03 18:39:16,787 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 273 predicate places. [2024-06-03 18:39:16,787 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 276 transitions, 3551 flow [2024-06-03 18:39:16,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:16,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:16,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:16,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 18:39:16,788 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:16,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash 290435829, now seen corresponding path program 9 times [2024-06-03 18:39:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:16,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323040709] [2024-06-03 18:39:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:16,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:18,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:18,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323040709] [2024-06-03 18:39:18,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323040709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:18,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:18,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:18,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804911711] [2024-06-03 18:39:18,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:18,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:18,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:18,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 276 transitions, 3551 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:18,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:18,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:18,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:18,825 INFO L124 PetriNetUnfolderBase]: 772/1368 cut-off events. [2024-06-03 18:39:18,825 INFO L125 PetriNetUnfolderBase]: For 88049/88049 co-relation queries the response was YES. [2024-06-03 18:39:18,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10008 conditions, 1368 events. 772/1368 cut-off events. For 88049/88049 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7215 event pairs, 95 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 9869. Up to 910 conditions per place. [2024-06-03 18:39:18,840 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 170 selfloop transitions, 125 changer transitions 0/297 dead transitions. [2024-06-03 18:39:18,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 297 transitions, 4359 flow [2024-06-03 18:39:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 18:39:18,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-03 18:39:18,841 INFO L175 Difference]: Start difference. First operand has 305 places, 276 transitions, 3551 flow. Second operand 10 states and 119 transitions. [2024-06-03 18:39:18,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 297 transitions, 4359 flow [2024-06-03 18:39:19,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 297 transitions, 4122 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-03 18:39:19,189 INFO L231 Difference]: Finished difference. Result has 309 places, 276 transitions, 3576 flow [2024-06-03 18:39:19,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3576, PETRI_PLACES=309, PETRI_TRANSITIONS=276} [2024-06-03 18:39:19,189 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-03 18:39:19,189 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 276 transitions, 3576 flow [2024-06-03 18:39:19,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:19,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:19,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:19,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 18:39:19,190 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:19,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:19,190 INFO L85 PathProgramCache]: Analyzing trace with hash 284710377, now seen corresponding path program 16 times [2024-06-03 18:39:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873978834] [2024-06-03 18:39:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:19,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:20,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:20,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873978834] [2024-06-03 18:39:20,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873978834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:20,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:20,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:39:20,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811892154] [2024-06-03 18:39:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:20,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:39:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:39:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:39:20,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:20,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 276 transitions, 3576 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:20,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:20,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:20,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:20,662 INFO L124 PetriNetUnfolderBase]: 780/1384 cut-off events. [2024-06-03 18:39:20,662 INFO L125 PetriNetUnfolderBase]: For 86592/86592 co-relation queries the response was YES. [2024-06-03 18:39:20,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10165 conditions, 1384 events. 780/1384 cut-off events. For 86592/86592 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7357 event pairs, 117 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 10025. Up to 1205 conditions per place. [2024-06-03 18:39:20,676 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 239 selfloop transitions, 51 changer transitions 0/292 dead transitions. [2024-06-03 18:39:20,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 4225 flow [2024-06-03 18:39:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:39:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:39:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 18:39:20,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-03 18:39:20,677 INFO L175 Difference]: Start difference. First operand has 309 places, 276 transitions, 3576 flow. Second operand 9 states and 101 transitions. [2024-06-03 18:39:20,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 4225 flow [2024-06-03 18:39:21,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 292 transitions, 3999 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 18:39:21,149 INFO L231 Difference]: Finished difference. Result has 310 places, 278 transitions, 3499 flow [2024-06-03 18:39:21,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3499, PETRI_PLACES=310, PETRI_TRANSITIONS=278} [2024-06-03 18:39:21,150 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-03 18:39:21,150 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 278 transitions, 3499 flow [2024-06-03 18:39:21,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:21,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:21,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:21,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 18:39:21,150 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:21,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1314342913, now seen corresponding path program 10 times [2024-06-03 18:39:21,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:21,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265926104] [2024-06-03 18:39:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:21,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:23,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:23,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265926104] [2024-06-03 18:39:23,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265926104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:23,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:23,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426666197] [2024-06-03 18:39:23,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:23,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:23,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:23,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:23,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 278 transitions, 3499 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:23,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:23,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:23,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:23,678 INFO L124 PetriNetUnfolderBase]: 786/1394 cut-off events. [2024-06-03 18:39:23,678 INFO L125 PetriNetUnfolderBase]: For 87188/87188 co-relation queries the response was YES. [2024-06-03 18:39:23,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10132 conditions, 1394 events. 786/1394 cut-off events. For 87188/87188 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7447 event pairs, 121 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 9991. Up to 1195 conditions per place. [2024-06-03 18:39:23,692 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 235 selfloop transitions, 59 changer transitions 0/296 dead transitions. [2024-06-03 18:39:23,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 296 transitions, 4201 flow [2024-06-03 18:39:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 18:39:23,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-03 18:39:23,693 INFO L175 Difference]: Start difference. First operand has 310 places, 278 transitions, 3499 flow. Second operand 10 states and 112 transitions. [2024-06-03 18:39:23,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 296 transitions, 4201 flow [2024-06-03 18:39:24,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 296 transitions, 4077 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-03 18:39:24,042 INFO L231 Difference]: Finished difference. Result has 314 places, 280 transitions, 3573 flow [2024-06-03 18:39:24,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3375, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3573, PETRI_PLACES=314, PETRI_TRANSITIONS=280} [2024-06-03 18:39:24,042 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-03 18:39:24,042 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 280 transitions, 3573 flow [2024-06-03 18:39:24,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:24,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:24,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:24,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 18:39:24,043 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:24,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1308980533, now seen corresponding path program 11 times [2024-06-03 18:39:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:24,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487896120] [2024-06-03 18:39:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:24,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:25,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:25,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487896120] [2024-06-03 18:39:25,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487896120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:25,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:25,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:25,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212474603] [2024-06-03 18:39:25,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:25,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:25,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:25,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:25,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:25,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:25,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 280 transitions, 3573 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:25,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:25,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:25,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:26,153 INFO L124 PetriNetUnfolderBase]: 787/1396 cut-off events. [2024-06-03 18:39:26,153 INFO L125 PetriNetUnfolderBase]: For 84754/84754 co-relation queries the response was YES. [2024-06-03 18:39:26,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10107 conditions, 1396 events. 787/1396 cut-off events. For 84754/84754 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7441 event pairs, 99 based on Foata normal form. 2/1398 useless extension candidates. Maximal degree in co-relation 9965. Up to 1126 conditions per place. [2024-06-03 18:39:26,168 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 219 selfloop transitions, 79 changer transitions 0/300 dead transitions. [2024-06-03 18:39:26,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 300 transitions, 4297 flow [2024-06-03 18:39:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 18:39:26,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-03 18:39:26,169 INFO L175 Difference]: Start difference. First operand has 314 places, 280 transitions, 3573 flow. Second operand 10 states and 114 transitions. [2024-06-03 18:39:26,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 300 transitions, 4297 flow [2024-06-03 18:39:26,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 300 transitions, 4135 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-03 18:39:26,543 INFO L231 Difference]: Finished difference. Result has 316 places, 282 transitions, 3653 flow [2024-06-03 18:39:26,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3411, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3653, PETRI_PLACES=316, PETRI_TRANSITIONS=282} [2024-06-03 18:39:26,544 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-03 18:39:26,544 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 282 transitions, 3653 flow [2024-06-03 18:39:26,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:26,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:26,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:26,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 18:39:26,544 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:26,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1331640327, now seen corresponding path program 2 times [2024-06-03 18:39:26,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:26,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149591234] [2024-06-03 18:39:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:26,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:28,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:28,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149591234] [2024-06-03 18:39:28,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149591234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:28,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:28,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:28,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513924480] [2024-06-03 18:39:28,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:28,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:28,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:28,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:28,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:28,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 282 transitions, 3653 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:28,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:28,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:28,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:28,970 INFO L124 PetriNetUnfolderBase]: 795/1412 cut-off events. [2024-06-03 18:39:28,970 INFO L125 PetriNetUnfolderBase]: For 92347/92347 co-relation queries the response was YES. [2024-06-03 18:39:28,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10217 conditions, 1412 events. 795/1412 cut-off events. For 92347/92347 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7636 event pairs, 176 based on Foata normal form. 4/1416 useless extension candidates. Maximal degree in co-relation 10074. Up to 1253 conditions per place. [2024-06-03 18:39:28,984 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 252 selfloop transitions, 47 changer transitions 0/301 dead transitions. [2024-06-03 18:39:28,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 301 transitions, 4331 flow [2024-06-03 18:39:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:39:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:39:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 18:39:28,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-03 18:39:28,985 INFO L175 Difference]: Start difference. First operand has 316 places, 282 transitions, 3653 flow. Second operand 11 states and 116 transitions. [2024-06-03 18:39:28,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 301 transitions, 4331 flow [2024-06-03 18:39:29,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 301 transitions, 4125 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-03 18:39:29,457 INFO L231 Difference]: Finished difference. Result has 319 places, 283 transitions, 3569 flow [2024-06-03 18:39:29,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3447, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3569, PETRI_PLACES=319, PETRI_TRANSITIONS=283} [2024-06-03 18:39:29,457 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-03 18:39:29,458 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 283 transitions, 3569 flow [2024-06-03 18:39:29,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:29,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:29,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:29,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 18:39:29,458 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:29,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:29,459 INFO L85 PathProgramCache]: Analyzing trace with hash -755879267, now seen corresponding path program 17 times [2024-06-03 18:39:29,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:29,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26577488] [2024-06-03 18:39:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:29,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:30,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:30,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26577488] [2024-06-03 18:39:30,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26577488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:30,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:30,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:30,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5679112] [2024-06-03 18:39:30,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:30,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:30,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:30,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:30,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:30,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:30,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 283 transitions, 3569 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:30,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:30,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:31,022 INFO L124 PetriNetUnfolderBase]: 799/1422 cut-off events. [2024-06-03 18:39:31,022 INFO L125 PetriNetUnfolderBase]: For 88444/88444 co-relation queries the response was YES. [2024-06-03 18:39:31,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10172 conditions, 1422 events. 799/1422 cut-off events. For 88444/88444 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7651 event pairs, 135 based on Foata normal form. 2/1424 useless extension candidates. Maximal degree in co-relation 10028. Up to 1251 conditions per place. [2024-06-03 18:39:31,036 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 247 selfloop transitions, 48 changer transitions 0/297 dead transitions. [2024-06-03 18:39:31,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 297 transitions, 4225 flow [2024-06-03 18:39:31,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:39:31,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:39:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 18:39:31,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:39:31,037 INFO L175 Difference]: Start difference. First operand has 319 places, 283 transitions, 3569 flow. Second operand 9 states and 99 transitions. [2024-06-03 18:39:31,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 297 transitions, 4225 flow [2024-06-03 18:39:31,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 297 transitions, 4115 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 18:39:31,400 INFO L231 Difference]: Finished difference. Result has 319 places, 284 transitions, 3589 flow [2024-06-03 18:39:31,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3589, PETRI_PLACES=319, PETRI_TRANSITIONS=284} [2024-06-03 18:39:31,400 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-03 18:39:31,400 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 284 transitions, 3589 flow [2024-06-03 18:39:31,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:31,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:31,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:31,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 18:39:31,401 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:31,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash 957490045, now seen corresponding path program 12 times [2024-06-03 18:39:31,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:31,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157820416] [2024-06-03 18:39:31,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:31,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:33,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:33,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157820416] [2024-06-03 18:39:33,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157820416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:33,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:33,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:33,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926322631] [2024-06-03 18:39:33,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:33,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:33,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:33,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:33,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:33,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:33,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 284 transitions, 3589 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:33,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:33,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:33,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:33,674 INFO L124 PetriNetUnfolderBase]: 815/1446 cut-off events. [2024-06-03 18:39:33,674 INFO L125 PetriNetUnfolderBase]: For 95452/95452 co-relation queries the response was YES. [2024-06-03 18:39:33,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10602 conditions, 1446 events. 815/1446 cut-off events. For 95452/95452 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7796 event pairs, 93 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 10457. Up to 1113 conditions per place. [2024-06-03 18:39:33,689 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 218 selfloop transitions, 89 changer transitions 0/309 dead transitions. [2024-06-03 18:39:33,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 309 transitions, 4573 flow [2024-06-03 18:39:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 18:39:33,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:39:33,690 INFO L175 Difference]: Start difference. First operand has 319 places, 284 transitions, 3589 flow. Second operand 10 states and 120 transitions. [2024-06-03 18:39:33,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 309 transitions, 4573 flow [2024-06-03 18:39:34,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 309 transitions, 4453 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 18:39:34,090 INFO L231 Difference]: Finished difference. Result has 322 places, 288 transitions, 3800 flow [2024-06-03 18:39:34,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3469, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3800, PETRI_PLACES=322, PETRI_TRANSITIONS=288} [2024-06-03 18:39:34,091 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-03 18:39:34,091 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 288 transitions, 3800 flow [2024-06-03 18:39:34,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:34,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:34,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:34,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 18:39:34,092 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:34,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:34,092 INFO L85 PathProgramCache]: Analyzing trace with hash -559586319, now seen corresponding path program 13 times [2024-06-03 18:39:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:34,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703797048] [2024-06-03 18:39:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:34,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:35,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703797048] [2024-06-03 18:39:35,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703797048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:35,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:35,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:35,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957516723] [2024-06-03 18:39:35,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:35,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:35,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:35,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:35,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:35,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 288 transitions, 3800 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:35,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:35,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:35,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:36,377 INFO L124 PetriNetUnfolderBase]: 837/1482 cut-off events. [2024-06-03 18:39:36,377 INFO L125 PetriNetUnfolderBase]: For 105656/105656 co-relation queries the response was YES. [2024-06-03 18:39:36,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11233 conditions, 1482 events. 837/1482 cut-off events. For 105656/105656 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7989 event pairs, 136 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 11087. Up to 1268 conditions per place. [2024-06-03 18:39:36,392 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 254 selfloop transitions, 57 changer transitions 0/313 dead transitions. [2024-06-03 18:39:36,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 313 transitions, 4802 flow [2024-06-03 18:39:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 18:39:36,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-03 18:39:36,396 INFO L175 Difference]: Start difference. First operand has 322 places, 288 transitions, 3800 flow. Second operand 10 states and 116 transitions. [2024-06-03 18:39:36,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 313 transitions, 4802 flow [2024-06-03 18:39:36,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 313 transitions, 4607 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-03 18:39:36,836 INFO L231 Difference]: Finished difference. Result has 327 places, 294 transitions, 3901 flow [2024-06-03 18:39:36,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3901, PETRI_PLACES=327, PETRI_TRANSITIONS=294} [2024-06-03 18:39:36,837 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-03 18:39:36,837 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 294 transitions, 3901 flow [2024-06-03 18:39:36,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:36,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:36,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:36,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 18:39:36,838 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:36,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash -397064675, now seen corresponding path program 14 times [2024-06-03 18:39:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:36,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913303959] [2024-06-03 18:39:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:36,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913303959] [2024-06-03 18:39:38,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913303959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:38,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:38,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962070981] [2024-06-03 18:39:38,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:38,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:38,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:38,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 294 transitions, 3901 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:38,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:38,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:38,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:38,683 INFO L124 PetriNetUnfolderBase]: 859/1518 cut-off events. [2024-06-03 18:39:38,683 INFO L125 PetriNetUnfolderBase]: For 121650/121650 co-relation queries the response was YES. [2024-06-03 18:39:38,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11752 conditions, 1518 events. 859/1518 cut-off events. For 121650/121650 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8213 event pairs, 291 based on Foata normal form. 4/1522 useless extension candidates. Maximal degree in co-relation 11603. Up to 1443 conditions per place. [2024-06-03 18:39:38,704 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 288 selfloop transitions, 24 changer transitions 0/314 dead transitions. [2024-06-03 18:39:38,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 314 transitions, 4867 flow [2024-06-03 18:39:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:39:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:39:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-03 18:39:38,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-03 18:39:38,705 INFO L175 Difference]: Start difference. First operand has 327 places, 294 transitions, 3901 flow. Second operand 11 states and 114 transitions. [2024-06-03 18:39:38,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 314 transitions, 4867 flow [2024-06-03 18:39:39,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 314 transitions, 4719 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-03 18:39:39,128 INFO L231 Difference]: Finished difference. Result has 333 places, 299 transitions, 3955 flow [2024-06-03 18:39:39,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3753, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3955, PETRI_PLACES=333, PETRI_TRANSITIONS=299} [2024-06-03 18:39:39,129 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-03 18:39:39,129 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 299 transitions, 3955 flow [2024-06-03 18:39:39,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:39,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:39,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:39,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 18:39:39,130 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:39,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1228698893, now seen corresponding path program 18 times [2024-06-03 18:39:39,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:39,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19317085] [2024-06-03 18:39:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:39,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:40,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19317085] [2024-06-03 18:39:40,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19317085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:40,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:39:40,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887655795] [2024-06-03 18:39:40,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:40,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:39:40,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:39:40,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:39:40,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:40,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 299 transitions, 3955 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:40,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:40,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:40,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:40,684 INFO L124 PetriNetUnfolderBase]: 863/1526 cut-off events. [2024-06-03 18:39:40,684 INFO L125 PetriNetUnfolderBase]: For 117333/117333 co-relation queries the response was YES. [2024-06-03 18:39:40,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11808 conditions, 1526 events. 863/1526 cut-off events. For 117333/117333 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8270 event pairs, 100 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 11657. Up to 1238 conditions per place. [2024-06-03 18:39:40,701 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 233 selfloop transitions, 80 changer transitions 0/315 dead transitions. [2024-06-03 18:39:40,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 315 transitions, 4659 flow [2024-06-03 18:39:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:39:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:39:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 18:39:40,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-03 18:39:40,702 INFO L175 Difference]: Start difference. First operand has 333 places, 299 transitions, 3955 flow. Second operand 9 states and 103 transitions. [2024-06-03 18:39:40,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 315 transitions, 4659 flow [2024-06-03 18:39:41,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 315 transitions, 4538 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-03 18:39:41,215 INFO L231 Difference]: Finished difference. Result has 335 places, 300 transitions, 4030 flow [2024-06-03 18:39:41,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3834, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4030, PETRI_PLACES=335, PETRI_TRANSITIONS=300} [2024-06-03 18:39:41,215 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-03 18:39:41,215 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 300 transitions, 4030 flow [2024-06-03 18:39:41,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:41,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:41,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:41,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 18:39:41,216 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:41,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1382621927, now seen corresponding path program 15 times [2024-06-03 18:39:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:41,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482684078] [2024-06-03 18:39:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:42,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:42,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482684078] [2024-06-03 18:39:42,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482684078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:42,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:42,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:42,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464673244] [2024-06-03 18:39:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:42,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:42,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:42,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 300 transitions, 4030 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:42,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:42,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:42,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:43,212 INFO L124 PetriNetUnfolderBase]: 869/1536 cut-off events. [2024-06-03 18:39:43,213 INFO L125 PetriNetUnfolderBase]: For 119040/119040 co-relation queries the response was YES. [2024-06-03 18:39:43,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11970 conditions, 1536 events. 869/1536 cut-off events. For 119040/119040 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8334 event pairs, 135 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 11817. Up to 1318 conditions per place. [2024-06-03 18:39:43,229 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 260 selfloop transitions, 58 changer transitions 0/320 dead transitions. [2024-06-03 18:39:43,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 320 transitions, 4946 flow [2024-06-03 18:39:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 18:39:43,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-03 18:39:43,230 INFO L175 Difference]: Start difference. First operand has 335 places, 300 transitions, 4030 flow. Second operand 10 states and 116 transitions. [2024-06-03 18:39:43,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 320 transitions, 4946 flow [2024-06-03 18:39:43,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 320 transitions, 4760 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 18:39:43,688 INFO L231 Difference]: Finished difference. Result has 338 places, 302 transitions, 4027 flow [2024-06-03 18:39:43,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3844, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4027, PETRI_PLACES=338, PETRI_TRANSITIONS=302} [2024-06-03 18:39:43,689 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 306 predicate places. [2024-06-03 18:39:43,689 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 302 transitions, 4027 flow [2024-06-03 18:39:43,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:43,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:43,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:43,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 18:39:43,689 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:43,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1228491131, now seen corresponding path program 16 times [2024-06-03 18:39:43,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:43,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539906534] [2024-06-03 18:39:43,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:43,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539906534] [2024-06-03 18:39:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539906534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:45,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195730466] [2024-06-03 18:39:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:45,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:45,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 302 transitions, 4027 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:45,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:45,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:45,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:46,126 INFO L124 PetriNetUnfolderBase]: 875/1546 cut-off events. [2024-06-03 18:39:46,126 INFO L125 PetriNetUnfolderBase]: For 121795/121795 co-relation queries the response was YES. [2024-06-03 18:39:46,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12005 conditions, 1546 events. 875/1546 cut-off events. For 121795/121795 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8403 event pairs, 95 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 11851. Up to 1209 conditions per place. [2024-06-03 18:39:46,143 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 232 selfloop transitions, 90 changer transitions 0/324 dead transitions. [2024-06-03 18:39:46,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 324 transitions, 4963 flow [2024-06-03 18:39:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 18:39:46,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:39:46,144 INFO L175 Difference]: Start difference. First operand has 338 places, 302 transitions, 4027 flow. Second operand 10 states and 120 transitions. [2024-06-03 18:39:46,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 324 transitions, 4963 flow [2024-06-03 18:39:46,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 324 transitions, 4810 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-03 18:39:46,619 INFO L231 Difference]: Finished difference. Result has 342 places, 304 transitions, 4121 flow [2024-06-03 18:39:46,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4121, PETRI_PLACES=342, PETRI_TRANSITIONS=304} [2024-06-03 18:39:46,620 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 310 predicate places. [2024-06-03 18:39:46,620 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 304 transitions, 4121 flow [2024-06-03 18:39:46,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:46,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:46,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:46,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 18:39:46,620 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:46,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:46,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1382420117, now seen corresponding path program 17 times [2024-06-03 18:39:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:46,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439115281] [2024-06-03 18:39:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:46,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:48,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439115281] [2024-06-03 18:39:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439115281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:48,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:48,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:48,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969545395] [2024-06-03 18:39:48,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:48,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:48,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:48,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:48,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 304 transitions, 4121 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:48,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:48,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:48,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:49,210 INFO L124 PetriNetUnfolderBase]: 871/1540 cut-off events. [2024-06-03 18:39:49,210 INFO L125 PetriNetUnfolderBase]: For 117703/117703 co-relation queries the response was YES. [2024-06-03 18:39:49,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11851 conditions, 1540 events. 871/1540 cut-off events. For 117703/117703 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8384 event pairs, 145 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 11696. Up to 1361 conditions per place. [2024-06-03 18:39:49,226 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 266 selfloop transitions, 51 changer transitions 0/319 dead transitions. [2024-06-03 18:39:49,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 319 transitions, 4801 flow [2024-06-03 18:39:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 18:39:49,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-03 18:39:49,227 INFO L175 Difference]: Start difference. First operand has 342 places, 304 transitions, 4121 flow. Second operand 10 states and 109 transitions. [2024-06-03 18:39:49,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 319 transitions, 4801 flow [2024-06-03 18:39:49,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 319 transitions, 4526 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-03 18:39:49,746 INFO L231 Difference]: Finished difference. Result has 345 places, 304 transitions, 3953 flow [2024-06-03 18:39:49,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3846, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3953, PETRI_PLACES=345, PETRI_TRANSITIONS=304} [2024-06-03 18:39:49,746 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 313 predicate places. [2024-06-03 18:39:49,747 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 304 transitions, 3953 flow [2024-06-03 18:39:49,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:49,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:49,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:49,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 18:39:49,747 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:49,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1390048597, now seen corresponding path program 3 times [2024-06-03 18:39:49,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:49,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751249262] [2024-06-03 18:39:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:51,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751249262] [2024-06-03 18:39:51,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751249262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:51,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:51,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:51,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068100956] [2024-06-03 18:39:51,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:51,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:51,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:51,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:51,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:51,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:51,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 304 transitions, 3953 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:51,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:51,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:51,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:52,213 INFO L124 PetriNetUnfolderBase]: 879/1556 cut-off events. [2024-06-03 18:39:52,214 INFO L125 PetriNetUnfolderBase]: For 126312/126312 co-relation queries the response was YES. [2024-06-03 18:39:52,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11708 conditions, 1556 events. 879/1556 cut-off events. For 126312/126312 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8564 event pairs, 200 based on Foata normal form. 4/1560 useless extension candidates. Maximal degree in co-relation 11552. Up to 1443 conditions per place. [2024-06-03 18:39:52,228 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 284 selfloop transitions, 35 changer transitions 0/321 dead transitions. [2024-06-03 18:39:52,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 321 transitions, 4665 flow [2024-06-03 18:39:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:39:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:39:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-03 18:39:52,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-03 18:39:52,229 INFO L175 Difference]: Start difference. First operand has 345 places, 304 transitions, 3953 flow. Second operand 11 states and 114 transitions. [2024-06-03 18:39:52,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 321 transitions, 4665 flow [2024-06-03 18:39:52,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 321 transitions, 4547 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 18:39:52,770 INFO L231 Difference]: Finished difference. Result has 346 places, 305 transitions, 3931 flow [2024-06-03 18:39:52,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3931, PETRI_PLACES=346, PETRI_TRANSITIONS=305} [2024-06-03 18:39:52,770 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 314 predicate places. [2024-06-03 18:39:52,771 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 305 transitions, 3931 flow [2024-06-03 18:39:52,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:52,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:52,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:52,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 18:39:52,771 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:52,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1188474755, now seen corresponding path program 19 times [2024-06-03 18:39:52,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740086228] [2024-06-03 18:39:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:52,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:53,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740086228] [2024-06-03 18:39:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740086228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:53,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:53,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:53,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599477366] [2024-06-03 18:39:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:53,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:53,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:53,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:53,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:53,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:53,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 305 transitions, 3931 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:53,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:53,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:53,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:54,462 INFO L124 PetriNetUnfolderBase]: 883/1564 cut-off events. [2024-06-03 18:39:54,463 INFO L125 PetriNetUnfolderBase]: For 122581/122581 co-relation queries the response was YES. [2024-06-03 18:39:54,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11757 conditions, 1564 events. 883/1564 cut-off events. For 122581/122581 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8548 event pairs, 147 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 11600. Up to 1372 conditions per place. [2024-06-03 18:39:54,478 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 265 selfloop transitions, 54 changer transitions 0/321 dead transitions. [2024-06-03 18:39:54,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 321 transitions, 4647 flow [2024-06-03 18:39:54,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:39:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:39:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 18:39:54,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-03 18:39:54,479 INFO L175 Difference]: Start difference. First operand has 346 places, 305 transitions, 3931 flow. Second operand 9 states and 104 transitions. [2024-06-03 18:39:54,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 321 transitions, 4647 flow [2024-06-03 18:39:55,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 321 transitions, 4561 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 18:39:55,067 INFO L231 Difference]: Finished difference. Result has 346 places, 306 transitions, 3993 flow [2024-06-03 18:39:55,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3845, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3993, PETRI_PLACES=346, PETRI_TRANSITIONS=306} [2024-06-03 18:39:55,068 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 314 predicate places. [2024-06-03 18:39:55,068 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 306 transitions, 3993 flow [2024-06-03 18:39:55,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:55,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:55,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:55,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 18:39:55,068 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:55,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1228692941, now seen corresponding path program 18 times [2024-06-03 18:39:55,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:55,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905973361] [2024-06-03 18:39:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:55,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:56,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:56,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905973361] [2024-06-03 18:39:56,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905973361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:56,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:56,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:56,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120282914] [2024-06-03 18:39:56,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:56,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:56,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:56,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:56,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:56,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:56,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 306 transitions, 3993 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:56,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:56,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:56,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:39:57,291 INFO L124 PetriNetUnfolderBase]: 879/1558 cut-off events. [2024-06-03 18:39:57,291 INFO L125 PetriNetUnfolderBase]: For 118198/118198 co-relation queries the response was YES. [2024-06-03 18:39:57,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11604 conditions, 1558 events. 879/1558 cut-off events. For 118198/118198 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8529 event pairs, 98 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 11446. Up to 1260 conditions per place. [2024-06-03 18:39:57,309 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 238 selfloop transitions, 83 changer transitions 0/323 dead transitions. [2024-06-03 18:39:57,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 323 transitions, 4691 flow [2024-06-03 18:39:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:39:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:39:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 18:39:57,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-03 18:39:57,310 INFO L175 Difference]: Start difference. First operand has 346 places, 306 transitions, 3993 flow. Second operand 10 states and 113 transitions. [2024-06-03 18:39:57,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 323 transitions, 4691 flow [2024-06-03 18:39:57,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 323 transitions, 4503 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-03 18:39:57,892 INFO L231 Difference]: Finished difference. Result has 349 places, 306 transitions, 3976 flow [2024-06-03 18:39:57,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3976, PETRI_PLACES=349, PETRI_TRANSITIONS=306} [2024-06-03 18:39:57,893 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 317 predicate places. [2024-06-03 18:39:57,893 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 306 transitions, 3976 flow [2024-06-03 18:39:57,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:57,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:39:57,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:39:57,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 18:39:57,893 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:39:57,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:39:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1221064461, now seen corresponding path program 4 times [2024-06-03 18:39:57,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:39:57,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748589768] [2024-06-03 18:39:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:39:57,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:39:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:39:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:39:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:39:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748589768] [2024-06-03 18:39:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748589768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:39:59,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:39:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:39:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411882755] [2024-06-03 18:39:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:39:59,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:39:59,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:39:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:39:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:39:59,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:39:59,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 306 transitions, 3976 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:39:59,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:39:59,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:39:59,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:00,164 INFO L124 PetriNetUnfolderBase]: 887/1574 cut-off events. [2024-06-03 18:40:00,164 INFO L125 PetriNetUnfolderBase]: For 124792/124792 co-relation queries the response was YES. [2024-06-03 18:40:00,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11637 conditions, 1574 events. 887/1574 cut-off events. For 124792/124792 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8703 event pairs, 173 based on Foata normal form. 4/1578 useless extension candidates. Maximal degree in co-relation 11478. Up to 1427 conditions per place. [2024-06-03 18:40:00,182 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 275 selfloop transitions, 47 changer transitions 0/324 dead transitions. [2024-06-03 18:40:00,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 324 transitions, 4702 flow [2024-06-03 18:40:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:40:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:40:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 18:40:00,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-03 18:40:00,183 INFO L175 Difference]: Start difference. First operand has 349 places, 306 transitions, 3976 flow. Second operand 11 states and 116 transitions. [2024-06-03 18:40:00,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 324 transitions, 4702 flow [2024-06-03 18:40:00,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 324 transitions, 4520 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 18:40:00,703 INFO L231 Difference]: Finished difference. Result has 350 places, 307 transitions, 3916 flow [2024-06-03 18:40:00,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3916, PETRI_PLACES=350, PETRI_TRANSITIONS=307} [2024-06-03 18:40:00,704 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-06-03 18:40:00,704 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 307 transitions, 3916 flow [2024-06-03 18:40:00,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:00,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:00,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:00,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 18:40:00,704 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:00,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1445117323, now seen corresponding path program 20 times [2024-06-03 18:40:00,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:00,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266925350] [2024-06-03 18:40:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:00,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:01,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:01,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266925350] [2024-06-03 18:40:01,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266925350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:01,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:01,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:40:01,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442593373] [2024-06-03 18:40:01,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:01,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:40:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:40:01,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:40:01,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:01,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 307 transitions, 3916 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:01,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:01,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:01,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:02,170 INFO L124 PetriNetUnfolderBase]: 891/1582 cut-off events. [2024-06-03 18:40:02,171 INFO L125 PetriNetUnfolderBase]: For 120333/120333 co-relation queries the response was YES. [2024-06-03 18:40:02,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11624 conditions, 1582 events. 891/1582 cut-off events. For 120333/120333 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8696 event pairs, 160 based on Foata normal form. 2/1584 useless extension candidates. Maximal degree in co-relation 11464. Up to 1417 conditions per place. [2024-06-03 18:40:02,189 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 273 selfloop transitions, 46 changer transitions 0/321 dead transitions. [2024-06-03 18:40:02,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 321 transitions, 4622 flow [2024-06-03 18:40:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:40:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:40:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 18:40:02,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-03 18:40:02,190 INFO L175 Difference]: Start difference. First operand has 350 places, 307 transitions, 3916 flow. Second operand 9 states and 100 transitions. [2024-06-03 18:40:02,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 321 transitions, 4622 flow [2024-06-03 18:40:02,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 321 transitions, 4510 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 18:40:02,725 INFO L231 Difference]: Finished difference. Result has 350 places, 308 transitions, 3934 flow [2024-06-03 18:40:02,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3804, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3934, PETRI_PLACES=350, PETRI_TRANSITIONS=308} [2024-06-03 18:40:02,725 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-06-03 18:40:02,725 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 308 transitions, 3934 flow [2024-06-03 18:40:02,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:02,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:02,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:02,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 18:40:02,726 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:02,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash -647776013, now seen corresponding path program 5 times [2024-06-03 18:40:02,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:02,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313800111] [2024-06-03 18:40:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:02,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:03,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:03,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313800111] [2024-06-03 18:40:03,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313800111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:03,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:03,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:40:03,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724023725] [2024-06-03 18:40:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:03,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:40:03,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:40:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:40:03,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:03,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 308 transitions, 3934 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:03,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:03,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:03,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:04,361 INFO L124 PetriNetUnfolderBase]: 913/1624 cut-off events. [2024-06-03 18:40:04,362 INFO L125 PetriNetUnfolderBase]: For 145941/145941 co-relation queries the response was YES. [2024-06-03 18:40:04,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12195 conditions, 1624 events. 913/1624 cut-off events. For 145941/145941 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9044 event pairs, 309 based on Foata normal form. 4/1628 useless extension candidates. Maximal degree in co-relation 12034. Up to 1524 conditions per place. [2024-06-03 18:40:04,381 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 303 selfloop transitions, 21 changer transitions 0/326 dead transitions. [2024-06-03 18:40:04,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 326 transitions, 4850 flow [2024-06-03 18:40:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:40:04,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:40:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-03 18:40:04,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30578512396694213 [2024-06-03 18:40:04,382 INFO L175 Difference]: Start difference. First operand has 350 places, 308 transitions, 3934 flow. Second operand 11 states and 111 transitions. [2024-06-03 18:40:04,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 326 transitions, 4850 flow [2024-06-03 18:40:05,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 326 transitions, 4730 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-03 18:40:05,003 INFO L231 Difference]: Finished difference. Result has 354 places, 310 transitions, 3910 flow [2024-06-03 18:40:05,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3814, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3910, PETRI_PLACES=354, PETRI_TRANSITIONS=310} [2024-06-03 18:40:05,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 322 predicate places. [2024-06-03 18:40:05,004 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 310 transitions, 3910 flow [2024-06-03 18:40:05,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:05,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:05,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:05,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 18:40:05,004 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:05,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1818203761, now seen corresponding path program 21 times [2024-06-03 18:40:05,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:05,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507406847] [2024-06-03 18:40:05,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:05,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507406847] [2024-06-03 18:40:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507406847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:06,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:06,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:06,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947139286] [2024-06-03 18:40:06,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:06,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:06,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:06,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:06,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:06,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:06,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 310 transitions, 3910 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:06,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:06,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:06,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:06,709 INFO L124 PetriNetUnfolderBase]: 910/1621 cut-off events. [2024-06-03 18:40:06,709 INFO L125 PetriNetUnfolderBase]: For 133240/133240 co-relation queries the response was YES. [2024-06-03 18:40:06,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11905 conditions, 1621 events. 910/1621 cut-off events. For 133240/133240 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9015 event pairs, 167 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 11743. Up to 1454 conditions per place. [2024-06-03 18:40:06,728 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 276 selfloop transitions, 45 changer transitions 0/323 dead transitions. [2024-06-03 18:40:06,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 323 transitions, 4586 flow [2024-06-03 18:40:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:40:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:40:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 18:40:06,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:40:06,729 INFO L175 Difference]: Start difference. First operand has 354 places, 310 transitions, 3910 flow. Second operand 9 states and 99 transitions. [2024-06-03 18:40:06,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 323 transitions, 4586 flow [2024-06-03 18:40:07,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 323 transitions, 4531 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-03 18:40:07,344 INFO L231 Difference]: Finished difference. Result has 356 places, 310 transitions, 3949 flow [2024-06-03 18:40:07,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3949, PETRI_PLACES=356, PETRI_TRANSITIONS=310} [2024-06-03 18:40:07,344 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 324 predicate places. [2024-06-03 18:40:07,344 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 310 transitions, 3949 flow [2024-06-03 18:40:07,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:07,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:07,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:07,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 18:40:07,345 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:07,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1812478309, now seen corresponding path program 19 times [2024-06-03 18:40:07,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:07,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749007295] [2024-06-03 18:40:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:07,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:09,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:09,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749007295] [2024-06-03 18:40:09,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749007295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:09,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:09,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:09,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689745112] [2024-06-03 18:40:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:09,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:09,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:09,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:09,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:09,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:09,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 310 transitions, 3949 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:09,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:09,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:09,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:10,033 INFO L124 PetriNetUnfolderBase]: 926/1645 cut-off events. [2024-06-03 18:40:10,033 INFO L125 PetriNetUnfolderBase]: For 145940/145940 co-relation queries the response was YES. [2024-06-03 18:40:10,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12491 conditions, 1645 events. 926/1645 cut-off events. For 145940/145940 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9149 event pairs, 155 based on Foata normal form. 2/1647 useless extension candidates. Maximal degree in co-relation 12327. Up to 1360 conditions per place. [2024-06-03 18:40:10,053 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 256 selfloop transitions, 76 changer transitions 0/334 dead transitions. [2024-06-03 18:40:10,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 334 transitions, 5027 flow [2024-06-03 18:40:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:40:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:40:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 18:40:10,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-03 18:40:10,054 INFO L175 Difference]: Start difference. First operand has 356 places, 310 transitions, 3949 flow. Second operand 10 states and 119 transitions. [2024-06-03 18:40:10,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 334 transitions, 5027 flow [2024-06-03 18:40:10,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 334 transitions, 4826 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-03 18:40:10,701 INFO L231 Difference]: Finished difference. Result has 357 places, 314 transitions, 4080 flow [2024-06-03 18:40:10,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4080, PETRI_PLACES=357, PETRI_TRANSITIONS=314} [2024-06-03 18:40:10,701 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 325 predicate places. [2024-06-03 18:40:10,701 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 314 transitions, 4080 flow [2024-06-03 18:40:10,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:10,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:10,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:10,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 18:40:10,701 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:10,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:10,702 INFO L85 PathProgramCache]: Analyzing trace with hash -648161963, now seen corresponding path program 6 times [2024-06-03 18:40:10,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:10,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640765446] [2024-06-03 18:40:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:10,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:11,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:11,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640765446] [2024-06-03 18:40:11,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640765446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:11,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:11,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 18:40:11,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78921197] [2024-06-03 18:40:11,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:11,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 18:40:11,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:11,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 18:40:11,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 18:40:11,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:11,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 314 transitions, 4080 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:11,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:11,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:11,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:12,349 INFO L124 PetriNetUnfolderBase]: 934/1661 cut-off events. [2024-06-03 18:40:12,349 INFO L125 PetriNetUnfolderBase]: For 157454/157454 co-relation queries the response was YES. [2024-06-03 18:40:12,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12561 conditions, 1661 events. 934/1661 cut-off events. For 157454/157454 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9323 event pairs, 315 based on Foata normal form. 4/1665 useless extension candidates. Maximal degree in co-relation 12397. Up to 1595 conditions per place. [2024-06-03 18:40:12,367 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 306 selfloop transitions, 20 changer transitions 0/328 dead transitions. [2024-06-03 18:40:12,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 328 transitions, 4790 flow [2024-06-03 18:40:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:40:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:40:12,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 18:40:12,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-03 18:40:12,368 INFO L175 Difference]: Start difference. First operand has 357 places, 314 transitions, 4080 flow. Second operand 10 states and 103 transitions. [2024-06-03 18:40:12,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 328 transitions, 4790 flow [2024-06-03 18:40:13,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 328 transitions, 4525 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-03 18:40:13,042 INFO L231 Difference]: Finished difference. Result has 358 places, 315 transitions, 3879 flow [2024-06-03 18:40:13,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3879, PETRI_PLACES=358, PETRI_TRANSITIONS=315} [2024-06-03 18:40:13,043 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 326 predicate places. [2024-06-03 18:40:13,043 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 315 transitions, 3879 flow [2024-06-03 18:40:13,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:13,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:13,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:13,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 18:40:13,043 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:13,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1188690236, now seen corresponding path program 3 times [2024-06-03 18:40:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:13,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077659849] [2024-06-03 18:40:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:13,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:15,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077659849] [2024-06-03 18:40:15,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077659849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:15,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085920213] [2024-06-03 18:40:15,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:15,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:15,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:15,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:15,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 315 transitions, 3879 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:15,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:15,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:15,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:16,552 INFO L124 PetriNetUnfolderBase]: 932/1660 cut-off events. [2024-06-03 18:40:16,552 INFO L125 PetriNetUnfolderBase]: For 138652/138652 co-relation queries the response was YES. [2024-06-03 18:40:16,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12067 conditions, 1660 events. 932/1660 cut-off events. For 138652/138652 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9348 event pairs, 223 based on Foata normal form. 1/1661 useless extension candidates. Maximal degree in co-relation 11904. Up to 1549 conditions per place. [2024-06-03 18:40:16,574 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 285 selfloop transitions, 41 changer transitions 0/328 dead transitions. [2024-06-03 18:40:16,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 328 transitions, 4575 flow [2024-06-03 18:40:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:40:16,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:40:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 18:40:16,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-03 18:40:16,575 INFO L175 Difference]: Start difference. First operand has 358 places, 315 transitions, 3879 flow. Second operand 10 states and 106 transitions. [2024-06-03 18:40:16,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 328 transitions, 4575 flow [2024-06-03 18:40:17,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 328 transitions, 4523 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 18:40:17,244 INFO L231 Difference]: Finished difference. Result has 360 places, 315 transitions, 3917 flow [2024-06-03 18:40:17,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3917, PETRI_PLACES=360, PETRI_TRANSITIONS=315} [2024-06-03 18:40:17,245 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 328 predicate places. [2024-06-03 18:40:17,245 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 315 transitions, 3917 flow [2024-06-03 18:40:17,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:17,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:17,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:17,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 18:40:17,245 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:17,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1396494109, now seen corresponding path program 20 times [2024-06-03 18:40:17,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:17,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959142341] [2024-06-03 18:40:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:17,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:18,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:18,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959142341] [2024-06-03 18:40:18,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959142341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:18,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:18,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250413657] [2024-06-03 18:40:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:18,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:18,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:18,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:18,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:19,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:19,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 315 transitions, 3917 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:19,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:19,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:19,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:19,787 INFO L124 PetriNetUnfolderBase]: 938/1668 cut-off events. [2024-06-03 18:40:19,787 INFO L125 PetriNetUnfolderBase]: For 146205/146205 co-relation queries the response was YES. [2024-06-03 18:40:19,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12243 conditions, 1668 events. 938/1668 cut-off events. For 146205/146205 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9358 event pairs, 159 based on Foata normal form. 2/1670 useless extension candidates. Maximal degree in co-relation 12079. Up to 1379 conditions per place. [2024-06-03 18:40:19,817 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 259 selfloop transitions, 75 changer transitions 0/336 dead transitions. [2024-06-03 18:40:19,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 336 transitions, 4897 flow [2024-06-03 18:40:19,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:40:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:40:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 18:40:19,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-03 18:40:19,818 INFO L175 Difference]: Start difference. First operand has 360 places, 315 transitions, 3917 flow. Second operand 10 states and 119 transitions. [2024-06-03 18:40:19,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 336 transitions, 4897 flow [2024-06-03 18:40:20,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 336 transitions, 4702 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-03 18:40:20,634 INFO L231 Difference]: Finished difference. Result has 359 places, 317 transitions, 3950 flow [2024-06-03 18:40:20,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3950, PETRI_PLACES=359, PETRI_TRANSITIONS=317} [2024-06-03 18:40:20,634 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 327 predicate places. [2024-06-03 18:40:20,634 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 317 transitions, 3950 flow [2024-06-03 18:40:20,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:20,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:20,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:20,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 18:40:20,635 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:20,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash -659203853, now seen corresponding path program 7 times [2024-06-03 18:40:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:20,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225972343] [2024-06-03 18:40:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:20,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:22,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:22,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225972343] [2024-06-03 18:40:22,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225972343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:22,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:22,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:22,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653666573] [2024-06-03 18:40:22,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:22,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:22,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:22,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:22,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:22,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 317 transitions, 3950 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:22,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:22,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:22,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:22,715 INFO L124 PetriNetUnfolderBase]: 932/1658 cut-off events. [2024-06-03 18:40:22,715 INFO L125 PetriNetUnfolderBase]: For 138021/138021 co-relation queries the response was YES. [2024-06-03 18:40:22,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 1658 events. 932/1658 cut-off events. For 138021/138021 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9315 event pairs, 311 based on Foata normal form. 4/1662 useless extension candidates. Maximal degree in co-relation 11678. Up to 1576 conditions per place. [2024-06-03 18:40:22,733 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 308 selfloop transitions, 21 changer transitions 0/331 dead transitions. [2024-06-03 18:40:22,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 331 transitions, 4650 flow [2024-06-03 18:40:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:40:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:40:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-03 18:40:22,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-03 18:40:22,734 INFO L175 Difference]: Start difference. First operand has 359 places, 317 transitions, 3950 flow. Second operand 11 states and 110 transitions. [2024-06-03 18:40:22,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 331 transitions, 4650 flow [2024-06-03 18:40:23,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 331 transitions, 4449 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-03 18:40:23,338 INFO L231 Difference]: Finished difference. Result has 362 places, 317 transitions, 3797 flow [2024-06-03 18:40:23,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3749, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3797, PETRI_PLACES=362, PETRI_TRANSITIONS=317} [2024-06-03 18:40:23,339 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-03 18:40:23,339 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 317 transitions, 3797 flow [2024-06-03 18:40:23,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:23,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:23,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:23,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 18:40:23,339 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:23,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -753734979, now seen corresponding path program 21 times [2024-06-03 18:40:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:23,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350762167] [2024-06-03 18:40:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:23,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:25,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:25,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350762167] [2024-06-03 18:40:25,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350762167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:25,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:25,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:25,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112200458] [2024-06-03 18:40:25,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:25,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:25,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:25,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:25,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:25,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:25,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 317 transitions, 3797 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:25,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:25,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:25,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:26,039 INFO L124 PetriNetUnfolderBase]: 938/1670 cut-off events. [2024-06-03 18:40:26,039 INFO L125 PetriNetUnfolderBase]: For 129260/129260 co-relation queries the response was YES. [2024-06-03 18:40:26,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11732 conditions, 1670 events. 938/1670 cut-off events. For 129260/129260 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9364 event pairs, 163 based on Foata normal form. 2/1672 useless extension candidates. Maximal degree in co-relation 11569. Up to 1456 conditions per place. [2024-06-03 18:40:26,058 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 274 selfloop transitions, 60 changer transitions 0/336 dead transitions. [2024-06-03 18:40:26,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 336 transitions, 4589 flow [2024-06-03 18:40:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:40:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:40:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 18:40:26,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-03 18:40:26,059 INFO L175 Difference]: Start difference. First operand has 362 places, 317 transitions, 3797 flow. Second operand 10 states and 114 transitions. [2024-06-03 18:40:26,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 336 transitions, 4589 flow [2024-06-03 18:40:26,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 336 transitions, 4543 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 18:40:26,677 INFO L231 Difference]: Finished difference. Result has 362 places, 319 transitions, 3953 flow [2024-06-03 18:40:26,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3751, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3953, PETRI_PLACES=362, PETRI_TRANSITIONS=319} [2024-06-03 18:40:26,677 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-03 18:40:26,677 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 319 transitions, 3953 flow [2024-06-03 18:40:26,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:26,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:26,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:26,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 18:40:26,677 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:26,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:26,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1445267425, now seen corresponding path program 22 times [2024-06-03 18:40:26,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:26,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217964829] [2024-06-03 18:40:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:26,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:28,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:28,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:28,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217964829] [2024-06-03 18:40:28,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217964829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:28,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:28,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:28,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67141347] [2024-06-03 18:40:28,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:28,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:28,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:28,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:28,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 319 transitions, 3953 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:28,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:28,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:28,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:28,966 INFO L124 PetriNetUnfolderBase]: 944/1678 cut-off events. [2024-06-03 18:40:28,966 INFO L125 PetriNetUnfolderBase]: For 127485/127485 co-relation queries the response was YES. [2024-06-03 18:40:28,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 1678 events. 944/1678 cut-off events. For 127485/127485 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9433 event pairs, 170 based on Foata normal form. 2/1680 useless extension candidates. Maximal degree in co-relation 11749. Up to 1492 conditions per place. [2024-06-03 18:40:28,982 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 282 selfloop transitions, 55 changer transitions 0/339 dead transitions. [2024-06-03 18:40:28,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 339 transitions, 4924 flow [2024-06-03 18:40:28,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:40:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:40:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 18:40:28,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-03 18:40:28,983 INFO L175 Difference]: Start difference. First operand has 362 places, 319 transitions, 3953 flow. Second operand 11 states and 122 transitions. [2024-06-03 18:40:28,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 339 transitions, 4924 flow [2024-06-03 18:40:29,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 339 transitions, 4693 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-03 18:40:29,718 INFO L231 Difference]: Finished difference. Result has 365 places, 321 transitions, 3905 flow [2024-06-03 18:40:29,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3905, PETRI_PLACES=365, PETRI_TRANSITIONS=321} [2024-06-03 18:40:29,719 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 333 predicate places. [2024-06-03 18:40:29,719 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 321 transitions, 3905 flow [2024-06-03 18:40:29,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:29,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:29,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:29,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 18:40:29,719 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:29,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash -973172473, now seen corresponding path program 23 times [2024-06-03 18:40:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:29,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783470421] [2024-06-03 18:40:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:29,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:30,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:30,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783470421] [2024-06-03 18:40:30,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783470421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:30,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:30,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899023804] [2024-06-03 18:40:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:30,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:30,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:31,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:31,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 321 transitions, 3905 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:31,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:31,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:31,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:31,787 INFO L124 PetriNetUnfolderBase]: 950/1688 cut-off events. [2024-06-03 18:40:31,787 INFO L125 PetriNetUnfolderBase]: For 129362/129362 co-relation queries the response was YES. [2024-06-03 18:40:31,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 1688 events. 950/1688 cut-off events. For 129362/129362 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9493 event pairs, 96 based on Foata normal form. 2/1690 useless extension candidates. Maximal degree in co-relation 11750. Up to 751 conditions per place. [2024-06-03 18:40:31,806 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 195 selfloop transitions, 152 changer transitions 0/349 dead transitions. [2024-06-03 18:40:31,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 349 transitions, 5267 flow [2024-06-03 18:40:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:40:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:40:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-03 18:40:31,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-03 18:40:31,807 INFO L175 Difference]: Start difference. First operand has 365 places, 321 transitions, 3905 flow. Second operand 10 states and 126 transitions. [2024-06-03 18:40:31,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 349 transitions, 5267 flow [2024-06-03 18:40:32,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 349 transitions, 5112 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-03 18:40:32,394 INFO L231 Difference]: Finished difference. Result has 367 places, 327 transitions, 4381 flow [2024-06-03 18:40:32,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4381, PETRI_PLACES=367, PETRI_TRANSITIONS=327} [2024-06-03 18:40:32,394 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 335 predicate places. [2024-06-03 18:40:32,394 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 327 transitions, 4381 flow [2024-06-03 18:40:32,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:32,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:32,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:32,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 18:40:32,395 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:32,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1214259945, now seen corresponding path program 8 times [2024-06-03 18:40:32,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:32,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519130080] [2024-06-03 18:40:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:32,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:33,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:33,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519130080] [2024-06-03 18:40:33,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519130080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:33,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:33,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:33,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643291092] [2024-06-03 18:40:33,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:33,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:33,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:33,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:33,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:33,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:33,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 327 transitions, 4381 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:33,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:33,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:33,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:34,138 INFO L124 PetriNetUnfolderBase]: 951/1691 cut-off events. [2024-06-03 18:40:34,138 INFO L125 PetriNetUnfolderBase]: For 133723/133723 co-relation queries the response was YES. [2024-06-03 18:40:34,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12171 conditions, 1691 events. 951/1691 cut-off events. For 133723/133723 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9560 event pairs, 174 based on Foata normal form. 4/1695 useless extension candidates. Maximal degree in co-relation 12004. Up to 1394 conditions per place. [2024-06-03 18:40:34,159 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 260 selfloop transitions, 83 changer transitions 0/345 dead transitions. [2024-06-03 18:40:34,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 345 transitions, 5151 flow [2024-06-03 18:40:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:40:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:40:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 18:40:34,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:40:34,160 INFO L175 Difference]: Start difference. First operand has 367 places, 327 transitions, 4381 flow. Second operand 11 states and 121 transitions. [2024-06-03 18:40:34,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 345 transitions, 5151 flow [2024-06-03 18:40:34,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 345 transitions, 4918 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-03 18:40:34,806 INFO L231 Difference]: Finished difference. Result has 373 places, 328 transitions, 4344 flow [2024-06-03 18:40:34,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4148, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4344, PETRI_PLACES=373, PETRI_TRANSITIONS=328} [2024-06-03 18:40:34,806 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 341 predicate places. [2024-06-03 18:40:34,806 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 328 transitions, 4344 flow [2024-06-03 18:40:34,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:34,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:34,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:34,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 18:40:34,807 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:34,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash -973179913, now seen corresponding path program 24 times [2024-06-03 18:40:34,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:34,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957093180] [2024-06-03 18:40:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:34,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:35,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:35,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957093180] [2024-06-03 18:40:35,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957093180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:35,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:35,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:40:35,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702845372] [2024-06-03 18:40:35,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:40:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:40:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:40:36,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:36,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 328 transitions, 4344 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:36,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:36,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:36,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:36,756 INFO L124 PetriNetUnfolderBase]: 957/1701 cut-off events. [2024-06-03 18:40:36,756 INFO L125 PetriNetUnfolderBase]: For 126099/126099 co-relation queries the response was YES. [2024-06-03 18:40:36,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12222 conditions, 1701 events. 957/1701 cut-off events. For 126099/126099 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9581 event pairs, 316 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 12053. Up to 1567 conditions per place. [2024-06-03 18:40:36,775 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 311 selfloop transitions, 32 changer transitions 0/345 dead transitions. [2024-06-03 18:40:36,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 345 transitions, 5326 flow [2024-06-03 18:40:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:40:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:40:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 18:40:36,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-03 18:40:36,776 INFO L175 Difference]: Start difference. First operand has 373 places, 328 transitions, 4344 flow. Second operand 10 states and 111 transitions. [2024-06-03 18:40:36,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 345 transitions, 5326 flow [2024-06-03 18:40:37,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 345 transitions, 5086 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-03 18:40:37,330 INFO L231 Difference]: Finished difference. Result has 375 places, 330 transitions, 4257 flow [2024-06-03 18:40:37,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4257, PETRI_PLACES=375, PETRI_TRANSITIONS=330} [2024-06-03 18:40:37,331 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 343 predicate places. [2024-06-03 18:40:37,331 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 330 transitions, 4257 flow [2024-06-03 18:40:37,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:37,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:37,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:37,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 18:40:37,331 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:37,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash -727141679, now seen corresponding path program 1 times [2024-06-03 18:40:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:37,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278867928] [2024-06-03 18:40:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:38,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278867928] [2024-06-03 18:40:38,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278867928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:38,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:38,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:40:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219238979] [2024-06-03 18:40:38,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:38,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:40:38,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:40:38,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:40:38,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:38,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 330 transitions, 4257 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:38,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:38,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:38,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:39,174 INFO L124 PetriNetUnfolderBase]: 961/1709 cut-off events. [2024-06-03 18:40:39,174 INFO L125 PetriNetUnfolderBase]: For 129202/129202 co-relation queries the response was YES. [2024-06-03 18:40:39,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12142 conditions, 1709 events. 961/1709 cut-off events. For 129202/129202 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9634 event pairs, 192 based on Foata normal form. 2/1711 useless extension candidates. Maximal degree in co-relation 11971. Up to 1565 conditions per place. [2024-06-03 18:40:39,196 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 316 selfloop transitions, 37 changer transitions 0/355 dead transitions. [2024-06-03 18:40:39,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 355 transitions, 5051 flow [2024-06-03 18:40:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:40:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:40:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-03 18:40:39,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3146853146853147 [2024-06-03 18:40:39,197 INFO L175 Difference]: Start difference. First operand has 375 places, 330 transitions, 4257 flow. Second operand 13 states and 135 transitions. [2024-06-03 18:40:39,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 355 transitions, 5051 flow [2024-06-03 18:40:39,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 355 transitions, 4982 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 18:40:39,789 INFO L231 Difference]: Finished difference. Result has 380 places, 331 transitions, 4294 flow [2024-06-03 18:40:39,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4188, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4294, PETRI_PLACES=380, PETRI_TRANSITIONS=331} [2024-06-03 18:40:39,789 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 348 predicate places. [2024-06-03 18:40:39,789 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 331 transitions, 4294 flow [2024-06-03 18:40:39,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:39,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:39,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:39,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 18:40:39,790 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:39,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash -703080909, now seen corresponding path program 2 times [2024-06-03 18:40:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:39,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265634174] [2024-06-03 18:40:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:39,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:41,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:41,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265634174] [2024-06-03 18:40:41,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265634174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:41,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:41,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:40:41,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180848096] [2024-06-03 18:40:41,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:41,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:40:41,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:40:41,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:40:41,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:41,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 331 transitions, 4294 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:41,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:41,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:41,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:41,822 INFO L124 PetriNetUnfolderBase]: 965/1717 cut-off events. [2024-06-03 18:40:41,822 INFO L125 PetriNetUnfolderBase]: For 130742/130742 co-relation queries the response was YES. [2024-06-03 18:40:41,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 1717 events. 965/1717 cut-off events. For 130742/130742 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9682 event pairs, 207 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 12063. Up to 1585 conditions per place. [2024-06-03 18:40:41,844 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 310 selfloop transitions, 41 changer transitions 0/353 dead transitions. [2024-06-03 18:40:41,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 353 transitions, 5082 flow [2024-06-03 18:40:41,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:40:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:40:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-03 18:40:41,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-03 18:40:41,845 INFO L175 Difference]: Start difference. First operand has 380 places, 331 transitions, 4294 flow. Second operand 12 states and 127 transitions. [2024-06-03 18:40:41,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 353 transitions, 5082 flow [2024-06-03 18:40:42,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 353 transitions, 4986 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-03 18:40:42,476 INFO L231 Difference]: Finished difference. Result has 381 places, 332 transitions, 4315 flow [2024-06-03 18:40:42,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4198, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4315, PETRI_PLACES=381, PETRI_TRANSITIONS=332} [2024-06-03 18:40:42,476 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 349 predicate places. [2024-06-03 18:40:42,476 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 332 transitions, 4315 flow [2024-06-03 18:40:42,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:42,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:42,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:42,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 18:40:42,477 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:42,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -702364809, now seen corresponding path program 3 times [2024-06-03 18:40:42,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:42,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578364396] [2024-06-03 18:40:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:42,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:43,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:43,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578364396] [2024-06-03 18:40:43,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578364396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:43,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:43,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:40:43,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868372204] [2024-06-03 18:40:43,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:43,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:40:43,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:43,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:40:43,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:40:43,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:43,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 332 transitions, 4315 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:43,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:43,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:43,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:44,354 INFO L124 PetriNetUnfolderBase]: 969/1725 cut-off events. [2024-06-03 18:40:44,354 INFO L125 PetriNetUnfolderBase]: For 134693/134693 co-relation queries the response was YES. [2024-06-03 18:40:44,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12304 conditions, 1725 events. 969/1725 cut-off events. For 134693/134693 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9735 event pairs, 211 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 12131. Up to 1596 conditions per place. [2024-06-03 18:40:44,376 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 314 selfloop transitions, 38 changer transitions 0/354 dead transitions. [2024-06-03 18:40:44,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 354 transitions, 5105 flow [2024-06-03 18:40:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:40:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:40:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-03 18:40:44,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-03 18:40:44,377 INFO L175 Difference]: Start difference. First operand has 381 places, 332 transitions, 4315 flow. Second operand 12 states and 126 transitions. [2024-06-03 18:40:44,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 354 transitions, 5105 flow [2024-06-03 18:40:45,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 354 transitions, 5000 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-03 18:40:45,013 INFO L231 Difference]: Finished difference. Result has 383 places, 333 transitions, 4322 flow [2024-06-03 18:40:45,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4210, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4322, PETRI_PLACES=383, PETRI_TRANSITIONS=333} [2024-06-03 18:40:45,014 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 351 predicate places. [2024-06-03 18:40:45,014 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 333 transitions, 4322 flow [2024-06-03 18:40:45,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:45,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:45,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:45,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 18:40:45,014 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:45,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:45,015 INFO L85 PathProgramCache]: Analyzing trace with hash -706775799, now seen corresponding path program 4 times [2024-06-03 18:40:45,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:45,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882809831] [2024-06-03 18:40:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:45,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:46,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:46,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882809831] [2024-06-03 18:40:46,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882809831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:46,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:46,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:40:46,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940365416] [2024-06-03 18:40:46,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:46,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:40:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:40:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:40:46,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:46,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 333 transitions, 4322 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:46,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:46,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:46,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:46,975 INFO L124 PetriNetUnfolderBase]: 973/1733 cut-off events. [2024-06-03 18:40:46,975 INFO L125 PetriNetUnfolderBase]: For 137465/137465 co-relation queries the response was YES. [2024-06-03 18:40:46,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12363 conditions, 1733 events. 973/1733 cut-off events. For 137465/137465 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9805 event pairs, 215 based on Foata normal form. 2/1735 useless extension candidates. Maximal degree in co-relation 12189. Up to 1607 conditions per place. [2024-06-03 18:40:46,997 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 318 selfloop transitions, 35 changer transitions 0/355 dead transitions. [2024-06-03 18:40:46,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 355 transitions, 5114 flow [2024-06-03 18:40:46,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:40:46,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:40:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-03 18:40:46,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-03 18:40:46,998 INFO L175 Difference]: Start difference. First operand has 383 places, 333 transitions, 4322 flow. Second operand 12 states and 125 transitions. [2024-06-03 18:40:46,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 355 transitions, 5114 flow [2024-06-03 18:40:47,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 355 transitions, 5012 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-03 18:40:47,578 INFO L231 Difference]: Finished difference. Result has 385 places, 334 transitions, 4328 flow [2024-06-03 18:40:47,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4328, PETRI_PLACES=385, PETRI_TRANSITIONS=334} [2024-06-03 18:40:47,578 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 353 predicate places. [2024-06-03 18:40:47,578 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 334 transitions, 4328 flow [2024-06-03 18:40:47,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:47,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:47,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:47,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 18:40:47,579 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:47,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash -602229369, now seen corresponding path program 5 times [2024-06-03 18:40:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:47,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193218749] [2024-06-03 18:40:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:47,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:48,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193218749] [2024-06-03 18:40:48,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193218749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:48,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:48,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:40:48,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683635524] [2024-06-03 18:40:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:48,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:40:48,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:48,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:40:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:40:48,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:48,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 334 transitions, 4328 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:48,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:48,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:48,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:49,478 INFO L124 PetriNetUnfolderBase]: 977/1741 cut-off events. [2024-06-03 18:40:49,478 INFO L125 PetriNetUnfolderBase]: For 140179/140179 co-relation queries the response was YES. [2024-06-03 18:40:49,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 1741 events. 977/1741 cut-off events. For 140179/140179 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9881 event pairs, 175 based on Foata normal form. 2/1743 useless extension candidates. Maximal degree in co-relation 12247. Up to 1522 conditions per place. [2024-06-03 18:40:49,501 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 313 selfloop transitions, 42 changer transitions 0/357 dead transitions. [2024-06-03 18:40:49,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 357 transitions, 5126 flow [2024-06-03 18:40:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:40:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:40:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-03 18:40:49,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-03 18:40:49,502 INFO L175 Difference]: Start difference. First operand has 385 places, 334 transitions, 4328 flow. Second operand 12 states and 123 transitions. [2024-06-03 18:40:49,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 357 transitions, 5126 flow [2024-06-03 18:40:50,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 357 transitions, 5028 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-03 18:40:50,179 INFO L231 Difference]: Finished difference. Result has 387 places, 335 transitions, 4354 flow [2024-06-03 18:40:50,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4230, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4354, PETRI_PLACES=387, PETRI_TRANSITIONS=335} [2024-06-03 18:40:50,180 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 355 predicate places. [2024-06-03 18:40:50,180 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 335 transitions, 4354 flow [2024-06-03 18:40:50,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:50,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:50,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:50,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 18:40:50,181 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:50,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:50,181 INFO L85 PathProgramCache]: Analyzing trace with hash 140731243, now seen corresponding path program 1 times [2024-06-03 18:40:50,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:50,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174155261] [2024-06-03 18:40:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:50,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:51,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:51,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174155261] [2024-06-03 18:40:51,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174155261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:51,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:51,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:40:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585025667] [2024-06-03 18:40:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:51,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:40:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:40:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:40:51,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:51,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 335 transitions, 4354 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:51,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:51,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:51,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:52,459 INFO L124 PetriNetUnfolderBase]: 980/1746 cut-off events. [2024-06-03 18:40:52,459 INFO L125 PetriNetUnfolderBase]: For 138456/138456 co-relation queries the response was YES. [2024-06-03 18:40:52,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12503 conditions, 1746 events. 980/1746 cut-off events. For 138456/138456 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9925 event pairs, 214 based on Foata normal form. 1/1747 useless extension candidates. Maximal degree in co-relation 12327. Up to 1617 conditions per place. [2024-06-03 18:40:52,482 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 314 selfloop transitions, 42 changer transitions 0/358 dead transitions. [2024-06-03 18:40:52,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 358 transitions, 5195 flow [2024-06-03 18:40:52,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:40:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:40:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-03 18:40:52,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-03 18:40:52,483 INFO L175 Difference]: Start difference. First operand has 387 places, 335 transitions, 4354 flow. Second operand 12 states and 128 transitions. [2024-06-03 18:40:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 358 transitions, 5195 flow [2024-06-03 18:40:53,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 358 transitions, 5081 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-03 18:40:53,166 INFO L231 Difference]: Finished difference. Result has 389 places, 337 transitions, 4405 flow [2024-06-03 18:40:53,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4240, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4405, PETRI_PLACES=389, PETRI_TRANSITIONS=337} [2024-06-03 18:40:53,167 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 357 predicate places. [2024-06-03 18:40:53,167 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 337 transitions, 4405 flow [2024-06-03 18:40:53,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:53,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:53,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:53,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 18:40:53,167 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:53,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2030089007, now seen corresponding path program 1 times [2024-06-03 18:40:53,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:53,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696944355] [2024-06-03 18:40:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:53,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:55,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696944355] [2024-06-03 18:40:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696944355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:55,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:55,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:40:55,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859723617] [2024-06-03 18:40:55,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:55,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:40:55,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:55,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:40:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:40:55,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:55,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 337 transitions, 4405 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:55,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:55,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:55,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:56,346 INFO L124 PetriNetUnfolderBase]: 986/1756 cut-off events. [2024-06-03 18:40:56,346 INFO L125 PetriNetUnfolderBase]: For 144452/144452 co-relation queries the response was YES. [2024-06-03 18:40:56,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12576 conditions, 1756 events. 986/1756 cut-off events. For 144452/144452 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9974 event pairs, 214 based on Foata normal form. 2/1758 useless extension candidates. Maximal degree in co-relation 12399. Up to 1631 conditions per place. [2024-06-03 18:40:56,366 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 323 selfloop transitions, 37 changer transitions 0/362 dead transitions. [2024-06-03 18:40:56,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 5259 flow [2024-06-03 18:40:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:40:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:40:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-03 18:40:56,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31934731934731936 [2024-06-03 18:40:56,367 INFO L175 Difference]: Start difference. First operand has 389 places, 337 transitions, 4405 flow. Second operand 13 states and 137 transitions. [2024-06-03 18:40:56,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 5259 flow [2024-06-03 18:40:57,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 362 transitions, 5135 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-03 18:40:57,093 INFO L231 Difference]: Finished difference. Result has 392 places, 339 transitions, 4432 flow [2024-06-03 18:40:57,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4432, PETRI_PLACES=392, PETRI_TRANSITIONS=339} [2024-06-03 18:40:57,094 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 360 predicate places. [2024-06-03 18:40:57,094 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 339 transitions, 4432 flow [2024-06-03 18:40:57,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:57,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:57,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:57,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-03 18:40:57,094 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:57,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:57,094 INFO L85 PathProgramCache]: Analyzing trace with hash 235561245, now seen corresponding path program 6 times [2024-06-03 18:40:57,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:57,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084850753] [2024-06-03 18:40:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:57,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:40:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:40:58,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:40:58,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084850753] [2024-06-03 18:40:58,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084850753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:40:58,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:40:58,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:40:58,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278751697] [2024-06-03 18:40:58,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:40:58,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:40:58,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:40:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:40:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:40:58,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:40:58,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 339 transitions, 4432 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:58,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:40:58,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:40:58,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:40:59,151 INFO L124 PetriNetUnfolderBase]: 990/1764 cut-off events. [2024-06-03 18:40:59,151 INFO L125 PetriNetUnfolderBase]: For 148695/148695 co-relation queries the response was YES. [2024-06-03 18:40:59,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12654 conditions, 1764 events. 990/1764 cut-off events. For 148695/148695 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10040 event pairs, 186 based on Foata normal form. 2/1766 useless extension candidates. Maximal degree in co-relation 12476. Up to 1650 conditions per place. [2024-06-03 18:40:59,173 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 325 selfloop transitions, 33 changer transitions 0/360 dead transitions. [2024-06-03 18:40:59,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 360 transitions, 5242 flow [2024-06-03 18:40:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:40:59,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:40:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 18:40:59,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-03 18:40:59,174 INFO L175 Difference]: Start difference. First operand has 392 places, 339 transitions, 4432 flow. Second operand 11 states and 120 transitions. [2024-06-03 18:40:59,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 360 transitions, 5242 flow [2024-06-03 18:40:59,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 360 transitions, 5113 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-03 18:40:59,887 INFO L231 Difference]: Finished difference. Result has 392 places, 340 transitions, 4412 flow [2024-06-03 18:40:59,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4412, PETRI_PLACES=392, PETRI_TRANSITIONS=340} [2024-06-03 18:40:59,888 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 360 predicate places. [2024-06-03 18:40:59,888 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 340 transitions, 4412 flow [2024-06-03 18:40:59,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:40:59,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:40:59,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:40:59,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-03 18:40:59,888 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:40:59,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:40:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1482787111, now seen corresponding path program 7 times [2024-06-03 18:40:59,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:40:59,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280963743] [2024-06-03 18:40:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:40:59,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:40:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280963743] [2024-06-03 18:41:01,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280963743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:01,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:01,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:01,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859923355] [2024-06-03 18:41:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:01,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:01,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:01,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:01,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 340 transitions, 4412 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:01,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:01,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:01,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:01,802 INFO L124 PetriNetUnfolderBase]: 994/1772 cut-off events. [2024-06-03 18:41:01,802 INFO L125 PetriNetUnfolderBase]: For 151974/151974 co-relation queries the response was YES. [2024-06-03 18:41:01,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12696 conditions, 1772 events. 994/1772 cut-off events. For 151974/151974 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10117 event pairs, 186 based on Foata normal form. 2/1774 useless extension candidates. Maximal degree in co-relation 12517. Up to 1661 conditions per place. [2024-06-03 18:41:01,825 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 329 selfloop transitions, 30 changer transitions 0/361 dead transitions. [2024-06-03 18:41:01,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 361 transitions, 5224 flow [2024-06-03 18:41:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 18:41:01,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-03 18:41:01,826 INFO L175 Difference]: Start difference. First operand has 392 places, 340 transitions, 4412 flow. Second operand 11 states and 119 transitions. [2024-06-03 18:41:01,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 361 transitions, 5224 flow [2024-06-03 18:41:02,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 361 transitions, 5127 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:02,552 INFO L231 Difference]: Finished difference. Result has 394 places, 341 transitions, 4419 flow [2024-06-03 18:41:02,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4315, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4419, PETRI_PLACES=394, PETRI_TRANSITIONS=341} [2024-06-03 18:41:02,552 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 362 predicate places. [2024-06-03 18:41:02,552 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 341 transitions, 4419 flow [2024-06-03 18:41:02,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:02,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:02,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:02,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-03 18:41:02,553 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:02,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:02,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1482902431, now seen corresponding path program 8 times [2024-06-03 18:41:02,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:02,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970448033] [2024-06-03 18:41:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:02,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:03,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970448033] [2024-06-03 18:41:03,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970448033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:03,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:03,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:03,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192379493] [2024-06-03 18:41:03,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:03,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:03,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:03,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:03,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 341 transitions, 4419 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:03,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:03,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:03,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:04,375 INFO L124 PetriNetUnfolderBase]: 998/1780 cut-off events. [2024-06-03 18:41:04,376 INFO L125 PetriNetUnfolderBase]: For 154993/154993 co-relation queries the response was YES. [2024-06-03 18:41:04,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12755 conditions, 1780 events. 998/1780 cut-off events. For 154993/154993 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10163 event pairs, 186 based on Foata normal form. 2/1782 useless extension candidates. Maximal degree in co-relation 12575. Up to 1672 conditions per place. [2024-06-03 18:41:04,399 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 333 selfloop transitions, 27 changer transitions 0/362 dead transitions. [2024-06-03 18:41:04,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 362 transitions, 5233 flow [2024-06-03 18:41:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 18:41:04,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-03 18:41:04,400 INFO L175 Difference]: Start difference. First operand has 394 places, 341 transitions, 4419 flow. Second operand 11 states and 118 transitions. [2024-06-03 18:41:04,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 362 transitions, 5233 flow [2024-06-03 18:41:05,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 362 transitions, 5139 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:05,145 INFO L231 Difference]: Finished difference. Result has 396 places, 342 transitions, 4425 flow [2024-06-03 18:41:05,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4325, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4425, PETRI_PLACES=396, PETRI_TRANSITIONS=342} [2024-06-03 18:41:05,146 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 364 predicate places. [2024-06-03 18:41:05,146 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 342 transitions, 4425 flow [2024-06-03 18:41:05,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:05,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:05,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:05,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-03 18:41:05,146 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:05,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:05,146 INFO L85 PathProgramCache]: Analyzing trace with hash 177348825, now seen corresponding path program 9 times [2024-06-03 18:41:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:05,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144771224] [2024-06-03 18:41:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:05,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:06,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144771224] [2024-06-03 18:41:06,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144771224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:06,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:06,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:06,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724200076] [2024-06-03 18:41:06,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:06,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:06,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:06,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:06,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:06,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:06,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 342 transitions, 4425 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:06,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:06,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:06,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:06,930 INFO L124 PetriNetUnfolderBase]: 1002/1788 cut-off events. [2024-06-03 18:41:06,930 INFO L125 PetriNetUnfolderBase]: For 158202/158202 co-relation queries the response was YES. [2024-06-03 18:41:06,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12814 conditions, 1788 events. 1002/1788 cut-off events. For 158202/158202 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10223 event pairs, 182 based on Foata normal form. 2/1790 useless extension candidates. Maximal degree in co-relation 12633. Up to 1662 conditions per place. [2024-06-03 18:41:06,952 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 335 selfloop transitions, 29 changer transitions 0/366 dead transitions. [2024-06-03 18:41:06,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 366 transitions, 5257 flow [2024-06-03 18:41:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:41:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:41:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-03 18:41:06,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-03 18:41:06,953 INFO L175 Difference]: Start difference. First operand has 396 places, 342 transitions, 4425 flow. Second operand 12 states and 128 transitions. [2024-06-03 18:41:06,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 366 transitions, 5257 flow [2024-06-03 18:41:07,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 366 transitions, 5167 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:07,694 INFO L231 Difference]: Finished difference. Result has 399 places, 343 transitions, 4441 flow [2024-06-03 18:41:07,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4441, PETRI_PLACES=399, PETRI_TRANSITIONS=343} [2024-06-03 18:41:07,694 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 367 predicate places. [2024-06-03 18:41:07,694 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 343 transitions, 4441 flow [2024-06-03 18:41:07,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:07,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:07,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:07,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-03 18:41:07,695 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:07,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:07,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1371959755, now seen corresponding path program 2 times [2024-06-03 18:41:07,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:07,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868892941] [2024-06-03 18:41:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:07,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:09,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:09,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868892941] [2024-06-03 18:41:09,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868892941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:09,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:09,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:09,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462539826] [2024-06-03 18:41:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:09,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:09,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:09,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:09,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 343 transitions, 4441 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:09,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:09,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:09,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:09,991 INFO L124 PetriNetUnfolderBase]: 1000/1785 cut-off events. [2024-06-03 18:41:09,991 INFO L125 PetriNetUnfolderBase]: For 149541/149541 co-relation queries the response was YES. [2024-06-03 18:41:10,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 1785 events. 1000/1785 cut-off events. For 149541/149541 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10221 event pairs, 190 based on Foata normal form. 1/1786 useless extension candidates. Maximal degree in co-relation 12461. Up to 1668 conditions per place. [2024-06-03 18:41:10,014 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 325 selfloop transitions, 36 changer transitions 0/363 dead transitions. [2024-06-03 18:41:10,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 363 transitions, 5223 flow [2024-06-03 18:41:10,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:10,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 18:41:10,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:41:10,015 INFO L175 Difference]: Start difference. First operand has 399 places, 343 transitions, 4441 flow. Second operand 11 states and 121 transitions. [2024-06-03 18:41:10,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 363 transitions, 5223 flow [2024-06-03 18:41:10,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 363 transitions, 5097 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-03 18:41:10,786 INFO L231 Difference]: Finished difference. Result has 400 places, 343 transitions, 4395 flow [2024-06-03 18:41:10,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4315, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4395, PETRI_PLACES=400, PETRI_TRANSITIONS=343} [2024-06-03 18:41:10,786 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2024-06-03 18:41:10,786 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 343 transitions, 4395 flow [2024-06-03 18:41:10,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:10,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:10,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:10,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-03 18:41:10,787 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:10,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:10,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1367311367, now seen corresponding path program 2 times [2024-06-03 18:41:10,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:10,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961052055] [2024-06-03 18:41:10,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:10,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:13,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:13,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961052055] [2024-06-03 18:41:13,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961052055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:13,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:13,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:13,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903680649] [2024-06-03 18:41:13,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:13,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:13,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:13,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:13,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 343 transitions, 4395 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:13,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:13,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:13,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:14,364 INFO L124 PetriNetUnfolderBase]: 1006/1795 cut-off events. [2024-06-03 18:41:14,364 INFO L125 PetriNetUnfolderBase]: For 157011/157011 co-relation queries the response was YES. [2024-06-03 18:41:14,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12693 conditions, 1795 events. 1006/1795 cut-off events. For 157011/157011 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10311 event pairs, 190 based on Foata normal form. 2/1797 useless extension candidates. Maximal degree in co-relation 12510. Up to 1682 conditions per place. [2024-06-03 18:41:14,387 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 334 selfloop transitions, 31 changer transitions 0/367 dead transitions. [2024-06-03 18:41:14,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 367 transitions, 5263 flow [2024-06-03 18:41:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:41:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:41:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-03 18:41:14,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-03 18:41:14,388 INFO L175 Difference]: Start difference. First operand has 400 places, 343 transitions, 4395 flow. Second operand 12 states and 130 transitions. [2024-06-03 18:41:14,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 367 transitions, 5263 flow [2024-06-03 18:41:15,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 367 transitions, 5118 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-03 18:41:15,168 INFO L231 Difference]: Finished difference. Result has 401 places, 345 transitions, 4393 flow [2024-06-03 18:41:15,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4250, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4393, PETRI_PLACES=401, PETRI_TRANSITIONS=345} [2024-06-03 18:41:15,169 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 369 predicate places. [2024-06-03 18:41:15,169 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 345 transitions, 4393 flow [2024-06-03 18:41:15,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:15,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:15,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:15,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-03 18:41:15,170 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:15,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:15,170 INFO L85 PathProgramCache]: Analyzing trace with hash 680802995, now seen corresponding path program 10 times [2024-06-03 18:41:15,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:15,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029225389] [2024-06-03 18:41:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:15,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:16,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029225389] [2024-06-03 18:41:16,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029225389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:16,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:16,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335258004] [2024-06-03 18:41:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:16,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:16,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:16,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:16,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:16,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 345 transitions, 4393 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:16,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:16,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:16,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:17,120 INFO L124 PetriNetUnfolderBase]: 1010/1803 cut-off events. [2024-06-03 18:41:17,120 INFO L125 PetriNetUnfolderBase]: For 161007/161007 co-relation queries the response was YES. [2024-06-03 18:41:17,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12756 conditions, 1803 events. 1010/1803 cut-off events. For 161007/161007 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10336 event pairs, 176 based on Foata normal form. 2/1805 useless extension candidates. Maximal degree in co-relation 12572. Up to 1630 conditions per place. [2024-06-03 18:41:17,149 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 313 selfloop transitions, 50 changer transitions 0/365 dead transitions. [2024-06-03 18:41:17,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 365 transitions, 5217 flow [2024-06-03 18:41:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 18:41:17,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-03 18:41:17,150 INFO L175 Difference]: Start difference. First operand has 401 places, 345 transitions, 4393 flow. Second operand 11 states and 123 transitions. [2024-06-03 18:41:17,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 365 transitions, 5217 flow [2024-06-03 18:41:17,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 365 transitions, 5096 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-03 18:41:17,834 INFO L231 Difference]: Finished difference. Result has 402 places, 346 transitions, 4422 flow [2024-06-03 18:41:17,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4422, PETRI_PLACES=402, PETRI_TRANSITIONS=346} [2024-06-03 18:41:17,834 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 370 predicate places. [2024-06-03 18:41:17,834 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 346 transitions, 4422 flow [2024-06-03 18:41:17,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:17,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:17,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:17,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-03 18:41:17,835 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:17,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:17,835 INFO L85 PathProgramCache]: Analyzing trace with hash 680798345, now seen corresponding path program 11 times [2024-06-03 18:41:17,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:17,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037384938] [2024-06-03 18:41:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:17,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:18,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:18,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037384938] [2024-06-03 18:41:18,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037384938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:18,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:18,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:18,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132741101] [2024-06-03 18:41:18,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:18,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:18,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:18,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:19,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:19,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 346 transitions, 4422 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:19,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:19,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:19,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:19,799 INFO L124 PetriNetUnfolderBase]: 1014/1811 cut-off events. [2024-06-03 18:41:19,799 INFO L125 PetriNetUnfolderBase]: For 164598/164598 co-relation queries the response was YES. [2024-06-03 18:41:19,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12867 conditions, 1811 events. 1014/1811 cut-off events. For 164598/164598 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10453 event pairs, 174 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 12682. Up to 1638 conditions per place. [2024-06-03 18:41:19,821 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 315 selfloop transitions, 49 changer transitions 0/366 dead transitions. [2024-06-03 18:41:19,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 366 transitions, 5248 flow [2024-06-03 18:41:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 18:41:19,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-03 18:41:19,822 INFO L175 Difference]: Start difference. First operand has 402 places, 346 transitions, 4422 flow. Second operand 11 states and 122 transitions. [2024-06-03 18:41:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 366 transitions, 5248 flow [2024-06-03 18:41:20,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 366 transitions, 5108 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:20,586 INFO L231 Difference]: Finished difference. Result has 404 places, 347 transitions, 4432 flow [2024-06-03 18:41:20,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4432, PETRI_PLACES=404, PETRI_TRANSITIONS=347} [2024-06-03 18:41:20,587 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-03 18:41:20,587 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 347 transitions, 4432 flow [2024-06-03 18:41:20,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:20,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:20,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:20,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-03 18:41:20,588 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:20,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 857934515, now seen corresponding path program 12 times [2024-06-03 18:41:20,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:20,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008828203] [2024-06-03 18:41:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:20,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008828203] [2024-06-03 18:41:21,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008828203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:21,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:21,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:21,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143270080] [2024-06-03 18:41:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:21,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:21,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:21,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:21,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:21,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:21,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 347 transitions, 4432 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:21,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:21,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:21,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:22,609 INFO L124 PetriNetUnfolderBase]: 1018/1819 cut-off events. [2024-06-03 18:41:22,609 INFO L125 PetriNetUnfolderBase]: For 167636/167636 co-relation queries the response was YES. [2024-06-03 18:41:22,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12927 conditions, 1819 events. 1018/1819 cut-off events. For 167636/167636 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10513 event pairs, 162 based on Foata normal form. 2/1821 useless extension candidates. Maximal degree in co-relation 12741. Up to 1556 conditions per place. [2024-06-03 18:41:22,628 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 292 selfloop transitions, 76 changer transitions 0/370 dead transitions. [2024-06-03 18:41:22,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 370 transitions, 5286 flow [2024-06-03 18:41:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:22,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 18:41:22,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-03 18:41:22,629 INFO L175 Difference]: Start difference. First operand has 404 places, 347 transitions, 4432 flow. Second operand 11 states and 127 transitions. [2024-06-03 18:41:22,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 370 transitions, 5286 flow [2024-06-03 18:41:23,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 370 transitions, 5146 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:23,440 INFO L231 Difference]: Finished difference. Result has 406 places, 348 transitions, 4498 flow [2024-06-03 18:41:23,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4292, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4498, PETRI_PLACES=406, PETRI_TRANSITIONS=348} [2024-06-03 18:41:23,440 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-03 18:41:23,441 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 348 transitions, 4498 flow [2024-06-03 18:41:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:23,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:23,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:23,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-03 18:41:23,441 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:23,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:23,441 INFO L85 PathProgramCache]: Analyzing trace with hash 680683025, now seen corresponding path program 13 times [2024-06-03 18:41:23,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:23,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130899042] [2024-06-03 18:41:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:23,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:24,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:24,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130899042] [2024-06-03 18:41:24,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130899042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:24,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:24,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:24,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852457571] [2024-06-03 18:41:24,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:24,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:24,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:24,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:24,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 348 transitions, 4498 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:24,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:24,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:24,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:25,227 INFO L124 PetriNetUnfolderBase]: 1022/1827 cut-off events. [2024-06-03 18:41:25,227 INFO L125 PetriNetUnfolderBase]: For 170904/170904 co-relation queries the response was YES. [2024-06-03 18:41:25,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13063 conditions, 1827 events. 1022/1827 cut-off events. For 170904/170904 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10581 event pairs, 174 based on Foata normal form. 2/1829 useless extension candidates. Maximal degree in co-relation 12876. Up to 1654 conditions per place. [2024-06-03 18:41:25,251 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 318 selfloop transitions, 48 changer transitions 0/368 dead transitions. [2024-06-03 18:41:25,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 368 transitions, 5330 flow [2024-06-03 18:41:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:25,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 18:41:25,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:41:25,252 INFO L175 Difference]: Start difference. First operand has 406 places, 348 transitions, 4498 flow. Second operand 11 states and 121 transitions. [2024-06-03 18:41:25,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 368 transitions, 5330 flow [2024-06-03 18:41:26,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 368 transitions, 5134 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:26,050 INFO L231 Difference]: Finished difference. Result has 408 places, 349 transitions, 4454 flow [2024-06-03 18:41:26,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4454, PETRI_PLACES=408, PETRI_TRANSITIONS=349} [2024-06-03 18:41:26,050 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-03 18:41:26,050 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 349 transitions, 4454 flow [2024-06-03 18:41:26,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:26,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:26,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:26,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-03 18:41:26,051 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:26,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:26,051 INFO L85 PathProgramCache]: Analyzing trace with hash 685451569, now seen corresponding path program 3 times [2024-06-03 18:41:26,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:26,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271105302] [2024-06-03 18:41:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:26,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:27,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:27,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271105302] [2024-06-03 18:41:27,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271105302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:27,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:27,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:27,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781897548] [2024-06-03 18:41:27,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:27,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:27,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:27,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:27,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 349 transitions, 4454 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:27,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:27,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:27,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:28,787 INFO L124 PetriNetUnfolderBase]: 1028/1837 cut-off events. [2024-06-03 18:41:28,787 INFO L125 PetriNetUnfolderBase]: For 173443/173443 co-relation queries the response was YES. [2024-06-03 18:41:28,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13051 conditions, 1837 events. 1028/1837 cut-off events. For 173443/173443 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10637 event pairs, 178 based on Foata normal form. 2/1839 useless extension candidates. Maximal degree in co-relation 12863. Up to 1654 conditions per place. [2024-06-03 18:41:28,812 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 317 selfloop transitions, 53 changer transitions 0/372 dead transitions. [2024-06-03 18:41:28,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 372 transitions, 5332 flow [2024-06-03 18:41:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:41:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:41:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 18:41:28,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-03 18:41:28,814 INFO L175 Difference]: Start difference. First operand has 408 places, 349 transitions, 4454 flow. Second operand 12 states and 133 transitions. [2024-06-03 18:41:28,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 372 transitions, 5332 flow [2024-06-03 18:41:29,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 372 transitions, 5190 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:29,622 INFO L231 Difference]: Finished difference. Result has 411 places, 351 transitions, 4503 flow [2024-06-03 18:41:29,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4503, PETRI_PLACES=411, PETRI_TRANSITIONS=351} [2024-06-03 18:41:29,622 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 379 predicate places. [2024-06-03 18:41:29,622 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 351 transitions, 4503 flow [2024-06-03 18:41:29,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:29,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:29,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:29,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-03 18:41:29,622 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:29,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:29,623 INFO L85 PathProgramCache]: Analyzing trace with hash 857941459, now seen corresponding path program 4 times [2024-06-03 18:41:29,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:29,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380492317] [2024-06-03 18:41:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:29,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:31,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:31,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380492317] [2024-06-03 18:41:31,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380492317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:31,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:31,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116621558] [2024-06-03 18:41:31,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:31,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:31,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:31,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:31,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 351 transitions, 4503 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:31,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:31,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:32,351 INFO L124 PetriNetUnfolderBase]: 1054/1879 cut-off events. [2024-06-03 18:41:32,351 INFO L125 PetriNetUnfolderBase]: For 202627/202627 co-relation queries the response was YES. [2024-06-03 18:41:32,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13952 conditions, 1879 events. 1054/1879 cut-off events. For 202627/202627 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10887 event pairs, 165 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 13763. Up to 1484 conditions per place. [2024-06-03 18:41:32,376 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 286 selfloop transitions, 93 changer transitions 0/381 dead transitions. [2024-06-03 18:41:32,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 381 transitions, 6025 flow [2024-06-03 18:41:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 18:41:32,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-03 18:41:32,377 INFO L175 Difference]: Start difference. First operand has 411 places, 351 transitions, 4503 flow. Second operand 11 states and 135 transitions. [2024-06-03 18:41:32,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 381 transitions, 6025 flow [2024-06-03 18:41:33,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 381 transitions, 5856 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-03 18:41:33,253 INFO L231 Difference]: Finished difference. Result has 412 places, 357 transitions, 4770 flow [2024-06-03 18:41:33,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4770, PETRI_PLACES=412, PETRI_TRANSITIONS=357} [2024-06-03 18:41:33,253 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 380 predicate places. [2024-06-03 18:41:33,253 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 357 transitions, 4770 flow [2024-06-03 18:41:33,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:33,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:33,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:33,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-03 18:41:33,254 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:33,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash 858172099, now seen corresponding path program 5 times [2024-06-03 18:41:33,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083026479] [2024-06-03 18:41:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:35,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:35,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083026479] [2024-06-03 18:41:35,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083026479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:35,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:35,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:35,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748803944] [2024-06-03 18:41:35,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:35,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:35,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:35,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:35,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 357 transitions, 4770 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:35,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:35,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:35,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:36,297 INFO L124 PetriNetUnfolderBase]: 1050/1873 cut-off events. [2024-06-03 18:41:36,297 INFO L125 PetriNetUnfolderBase]: For 193275/193275 co-relation queries the response was YES. [2024-06-03 18:41:36,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13733 conditions, 1873 events. 1050/1873 cut-off events. For 193275/193275 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10852 event pairs, 162 based on Foata normal form. 2/1875 useless extension candidates. Maximal degree in co-relation 13543. Up to 1481 conditions per place. [2024-06-03 18:41:36,324 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 280 selfloop transitions, 99 changer transitions 0/381 dead transitions. [2024-06-03 18:41:36,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 381 transitions, 5834 flow [2024-06-03 18:41:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 18:41:36,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-03 18:41:36,325 INFO L175 Difference]: Start difference. First operand has 412 places, 357 transitions, 4770 flow. Second operand 11 states and 133 transitions. [2024-06-03 18:41:36,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 381 transitions, 5834 flow [2024-06-03 18:41:37,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 381 transitions, 5602 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-03 18:41:37,203 INFO L231 Difference]: Finished difference. Result has 417 places, 357 transitions, 4745 flow [2024-06-03 18:41:37,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4538, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4745, PETRI_PLACES=417, PETRI_TRANSITIONS=357} [2024-06-03 18:41:37,203 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 385 predicate places. [2024-06-03 18:41:37,203 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 357 transitions, 4745 flow [2024-06-03 18:41:37,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:37,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:37,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:37,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-03 18:41:37,204 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:37,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash -886183227, now seen corresponding path program 1 times [2024-06-03 18:41:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:37,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805479277] [2024-06-03 18:41:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:37,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805479277] [2024-06-03 18:41:39,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805479277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:39,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:39,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371846666] [2024-06-03 18:41:39,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:39,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:39,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:39,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:39,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:39,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:39,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 357 transitions, 4745 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:39,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:39,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:39,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:39,974 INFO L124 PetriNetUnfolderBase]: 1054/1881 cut-off events. [2024-06-03 18:41:39,975 INFO L125 PetriNetUnfolderBase]: For 194620/194620 co-relation queries the response was YES. [2024-06-03 18:41:40,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13825 conditions, 1881 events. 1054/1881 cut-off events. For 194620/194620 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10968 event pairs, 272 based on Foata normal form. 2/1883 useless extension candidates. Maximal degree in co-relation 13633. Up to 1748 conditions per place. [2024-06-03 18:41:40,012 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 332 selfloop transitions, 44 changer transitions 0/378 dead transitions. [2024-06-03 18:41:40,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 378 transitions, 5589 flow [2024-06-03 18:41:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:41:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:41:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-03 18:41:40,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-03 18:41:40,013 INFO L175 Difference]: Start difference. First operand has 417 places, 357 transitions, 4745 flow. Second operand 12 states and 127 transitions. [2024-06-03 18:41:40,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 378 transitions, 5589 flow [2024-06-03 18:41:40,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 378 transitions, 5415 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:40,896 INFO L231 Difference]: Finished difference. Result has 420 places, 358 transitions, 4693 flow [2024-06-03 18:41:40,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4571, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4693, PETRI_PLACES=420, PETRI_TRANSITIONS=358} [2024-06-03 18:41:40,897 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 388 predicate places. [2024-06-03 18:41:40,897 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 358 transitions, 4693 flow [2024-06-03 18:41:40,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:40,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:40,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:40,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-03 18:41:40,898 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:40,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash 851505425, now seen corresponding path program 14 times [2024-06-03 18:41:40,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:40,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926676280] [2024-06-03 18:41:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:40,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:42,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:42,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926676280] [2024-06-03 18:41:42,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926676280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:42,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:42,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:42,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072759154] [2024-06-03 18:41:42,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:42,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:42,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:42,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:42,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:42,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 358 transitions, 4693 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:42,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:42,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:42,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:43,194 INFO L124 PetriNetUnfolderBase]: 1058/1889 cut-off events. [2024-06-03 18:41:43,194 INFO L125 PetriNetUnfolderBase]: For 198791/198791 co-relation queries the response was YES. [2024-06-03 18:41:43,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13850 conditions, 1889 events. 1058/1889 cut-off events. For 198791/198791 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10993 event pairs, 168 based on Foata normal form. 2/1891 useless extension candidates. Maximal degree in co-relation 13657. Up to 1675 conditions per place. [2024-06-03 18:41:43,217 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 316 selfloop transitions, 62 changer transitions 0/380 dead transitions. [2024-06-03 18:41:43,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 380 transitions, 5565 flow [2024-06-03 18:41:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 18:41:43,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-03 18:41:43,218 INFO L175 Difference]: Start difference. First operand has 420 places, 358 transitions, 4693 flow. Second operand 11 states and 125 transitions. [2024-06-03 18:41:43,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 380 transitions, 5565 flow [2024-06-03 18:41:44,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 380 transitions, 5459 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-03 18:41:44,175 INFO L231 Difference]: Finished difference. Result has 421 places, 359 transitions, 4769 flow [2024-06-03 18:41:44,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4587, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4769, PETRI_PLACES=421, PETRI_TRANSITIONS=359} [2024-06-03 18:41:44,176 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 389 predicate places. [2024-06-03 18:41:44,176 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 359 transitions, 4769 flow [2024-06-03 18:41:44,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:44,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:44,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:44,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-03 18:41:44,176 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:44,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:44,176 INFO L85 PathProgramCache]: Analyzing trace with hash 851500775, now seen corresponding path program 15 times [2024-06-03 18:41:44,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:44,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428157948] [2024-06-03 18:41:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:44,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:45,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:45,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428157948] [2024-06-03 18:41:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428157948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:45,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:45,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:45,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135241104] [2024-06-03 18:41:45,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:45,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:45,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:45,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:45,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:45,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:45,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 359 transitions, 4769 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:45,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:45,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:45,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:46,180 INFO L124 PetriNetUnfolderBase]: 1062/1897 cut-off events. [2024-06-03 18:41:46,180 INFO L125 PetriNetUnfolderBase]: For 203290/203290 co-relation queries the response was YES. [2024-06-03 18:41:46,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14025 conditions, 1897 events. 1062/1897 cut-off events. For 203290/203290 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11073 event pairs, 166 based on Foata normal form. 2/1899 useless extension candidates. Maximal degree in co-relation 13831. Up to 1683 conditions per place. [2024-06-03 18:41:46,206 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 318 selfloop transitions, 61 changer transitions 0/381 dead transitions. [2024-06-03 18:41:46,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 381 transitions, 5643 flow [2024-06-03 18:41:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:41:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:41:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 18:41:46,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-03 18:41:46,207 INFO L175 Difference]: Start difference. First operand has 421 places, 359 transitions, 4769 flow. Second operand 11 states and 124 transitions. [2024-06-03 18:41:46,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 381 transitions, 5643 flow [2024-06-03 18:41:47,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 381 transitions, 5471 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:47,096 INFO L231 Difference]: Finished difference. Result has 423 places, 360 transitions, 4779 flow [2024-06-03 18:41:47,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4597, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4779, PETRI_PLACES=423, PETRI_TRANSITIONS=360} [2024-06-03 18:41:47,096 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 391 predicate places. [2024-06-03 18:41:47,096 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 360 transitions, 4779 flow [2024-06-03 18:41:47,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:47,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:47,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:47,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-03 18:41:47,096 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:47,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:47,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2075412913, now seen corresponding path program 6 times [2024-06-03 18:41:47,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:47,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659037870] [2024-06-03 18:41:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:47,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:49,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:49,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659037870] [2024-06-03 18:41:49,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659037870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:49,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:49,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:49,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024305724] [2024-06-03 18:41:49,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:49,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:49,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:49,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:49,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:49,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:49,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 360 transitions, 4779 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:49,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:49,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:49,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:50,094 INFO L124 PetriNetUnfolderBase]: 1063/1899 cut-off events. [2024-06-03 18:41:50,094 INFO L125 PetriNetUnfolderBase]: For 199013/199013 co-relation queries the response was YES. [2024-06-03 18:41:50,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13899 conditions, 1899 events. 1063/1899 cut-off events. For 199013/199013 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11071 event pairs, 168 based on Foata normal form. 2/1901 useless extension candidates. Maximal degree in co-relation 13704. Up to 1675 conditions per place. [2024-06-03 18:41:50,119 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 318 selfloop transitions, 65 changer transitions 0/385 dead transitions. [2024-06-03 18:41:50,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 385 transitions, 5679 flow [2024-06-03 18:41:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:41:50,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:41:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 18:41:50,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 18:41:50,120 INFO L175 Difference]: Start difference. First operand has 423 places, 360 transitions, 4779 flow. Second operand 12 states and 135 transitions. [2024-06-03 18:41:50,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 385 transitions, 5679 flow [2024-06-03 18:41:51,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 385 transitions, 5507 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-03 18:41:51,063 INFO L231 Difference]: Finished difference. Result has 426 places, 362 transitions, 4808 flow [2024-06-03 18:41:51,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4607, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4808, PETRI_PLACES=426, PETRI_TRANSITIONS=362} [2024-06-03 18:41:51,063 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-03 18:41:51,064 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 362 transitions, 4808 flow [2024-06-03 18:41:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:51,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:51,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:51,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-03 18:41:51,064 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:51,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash 999720737, now seen corresponding path program 16 times [2024-06-03 18:41:51,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:51,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021847924] [2024-06-03 18:41:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:51,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:52,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:52,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021847924] [2024-06-03 18:41:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021847924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:52,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149344465] [2024-06-03 18:41:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:52,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:52,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:52,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:52,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 362 transitions, 4808 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:52,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:52,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:52,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:53,112 INFO L124 PetriNetUnfolderBase]: 1067/1907 cut-off events. [2024-06-03 18:41:53,112 INFO L125 PetriNetUnfolderBase]: For 202724/202724 co-relation queries the response was YES. [2024-06-03 18:41:53,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13972 conditions, 1907 events. 1067/1907 cut-off events. For 202724/202724 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11144 event pairs, 237 based on Foata normal form. 2/1909 useless extension candidates. Maximal degree in co-relation 13776. Up to 1715 conditions per place. [2024-06-03 18:41:53,138 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 320 selfloop transitions, 58 changer transitions 0/380 dead transitions. [2024-06-03 18:41:53,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 380 transitions, 5666 flow [2024-06-03 18:41:53,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:41:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:41:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 18:41:53,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-03 18:41:53,139 INFO L175 Difference]: Start difference. First operand has 426 places, 362 transitions, 4808 flow. Second operand 10 states and 108 transitions. [2024-06-03 18:41:53,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 380 transitions, 5666 flow [2024-06-03 18:41:54,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 380 transitions, 5493 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-03 18:41:54,016 INFO L231 Difference]: Finished difference. Result has 426 places, 363 transitions, 4820 flow [2024-06-03 18:41:54,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4820, PETRI_PLACES=426, PETRI_TRANSITIONS=363} [2024-06-03 18:41:54,017 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-03 18:41:54,017 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 363 transitions, 4820 flow [2024-06-03 18:41:54,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:54,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:54,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:54,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-03 18:41:54,017 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:54,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1763042821, now seen corresponding path program 17 times [2024-06-03 18:41:54,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:54,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121911121] [2024-06-03 18:41:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:54,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:55,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:55,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121911121] [2024-06-03 18:41:55,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121911121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:55,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:55,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:55,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523427493] [2024-06-03 18:41:55,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:55,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:55,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:55,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:55,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:55,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:55,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 363 transitions, 4820 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:55,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:55,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:55,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:56,072 INFO L124 PetriNetUnfolderBase]: 1071/1915 cut-off events. [2024-06-03 18:41:56,072 INFO L125 PetriNetUnfolderBase]: For 207187/207187 co-relation queries the response was YES. [2024-06-03 18:41:56,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14081 conditions, 1915 events. 1071/1915 cut-off events. For 207187/207187 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11235 event pairs, 235 based on Foata normal form. 2/1917 useless extension candidates. Maximal degree in co-relation 13884. Up to 1732 conditions per place. [2024-06-03 18:41:56,099 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 330 selfloop transitions, 49 changer transitions 0/381 dead transitions. [2024-06-03 18:41:56,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 381 transitions, 5680 flow [2024-06-03 18:41:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:41:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:41:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 18:41:56,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-03 18:41:56,100 INFO L175 Difference]: Start difference. First operand has 426 places, 363 transitions, 4820 flow. Second operand 10 states and 107 transitions. [2024-06-03 18:41:56,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 381 transitions, 5680 flow [2024-06-03 18:41:57,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 381 transitions, 5511 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-03 18:41:57,071 INFO L231 Difference]: Finished difference. Result has 428 places, 364 transitions, 4817 flow [2024-06-03 18:41:57,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4655, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4817, PETRI_PLACES=428, PETRI_TRANSITIONS=364} [2024-06-03 18:41:57,072 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 396 predicate places. [2024-06-03 18:41:57,072 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 364 transitions, 4817 flow [2024-06-03 18:41:57,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:57,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:41:57,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:41:57,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-03 18:41:57,072 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:41:57,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:41:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 999600767, now seen corresponding path program 18 times [2024-06-03 18:41:57,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:41:57,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932198972] [2024-06-03 18:41:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:41:57,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:41:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:41:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:41:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:41:58,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932198972] [2024-06-03 18:41:58,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932198972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:41:58,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:41:58,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:41:58,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695474651] [2024-06-03 18:41:58,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:41:58,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:41:58,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:41:58,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:41:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:41:58,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:41:58,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 364 transitions, 4817 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:41:58,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:41:58,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:41:58,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:41:58,939 INFO L124 PetriNetUnfolderBase]: 1075/1923 cut-off events. [2024-06-03 18:41:58,939 INFO L125 PetriNetUnfolderBase]: For 203529/203529 co-relation queries the response was YES. [2024-06-03 18:41:58,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14072 conditions, 1923 events. 1075/1923 cut-off events. For 203529/203529 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11305 event pairs, 233 based on Foata normal form. 2/1925 useless extension candidates. Maximal degree in co-relation 13874. Up to 1749 conditions per place. [2024-06-03 18:41:58,961 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 340 selfloop transitions, 40 changer transitions 0/382 dead transitions. [2024-06-03 18:41:58,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 382 transitions, 5675 flow [2024-06-03 18:41:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:41:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:41:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 18:41:58,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-03 18:41:58,962 INFO L175 Difference]: Start difference. First operand has 428 places, 364 transitions, 4817 flow. Second operand 10 states and 106 transitions. [2024-06-03 18:41:58,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 382 transitions, 5675 flow [2024-06-03 18:41:59,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 382 transitions, 5523 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-03 18:41:59,999 INFO L231 Difference]: Finished difference. Result has 430 places, 365 transitions, 4811 flow [2024-06-03 18:42:00,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4811, PETRI_PLACES=430, PETRI_TRANSITIONS=365} [2024-06-03 18:42:00,000 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 398 predicate places. [2024-06-03 18:42:00,000 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 365 transitions, 4811 flow [2024-06-03 18:42:00,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:00,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:00,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:00,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-03 18:42:00,001 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:00,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:00,001 INFO L85 PathProgramCache]: Analyzing trace with hash -102906885, now seen corresponding path program 19 times [2024-06-03 18:42:00,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:00,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852375025] [2024-06-03 18:42:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:00,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852375025] [2024-06-03 18:42:01,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852375025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:01,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:01,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:01,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377752979] [2024-06-03 18:42:01,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:01,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:01,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:01,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:01,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 365 transitions, 4811 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:01,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:01,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:01,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:01,881 INFO L124 PetriNetUnfolderBase]: 1079/1931 cut-off events. [2024-06-03 18:42:01,881 INFO L125 PetriNetUnfolderBase]: For 200068/200068 co-relation queries the response was YES. [2024-06-03 18:42:01,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14063 conditions, 1931 events. 1079/1931 cut-off events. For 200068/200068 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11353 event pairs, 161 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 13864. Up to 1640 conditions per place. [2024-06-03 18:42:01,908 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 316 selfloop transitions, 65 changer transitions 0/383 dead transitions. [2024-06-03 18:42:01,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 383 transitions, 5667 flow [2024-06-03 18:42:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:42:01,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:42:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 18:42:01,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-03 18:42:01,909 INFO L175 Difference]: Start difference. First operand has 430 places, 365 transitions, 4811 flow. Second operand 11 states and 117 transitions. [2024-06-03 18:42:01,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 383 transitions, 5667 flow [2024-06-03 18:42:02,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 383 transitions, 5535 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:02,844 INFO L231 Difference]: Finished difference. Result has 433 places, 366 transitions, 4875 flow [2024-06-03 18:42:02,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4683, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4875, PETRI_PLACES=433, PETRI_TRANSITIONS=366} [2024-06-03 18:42:02,845 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 401 predicate places. [2024-06-03 18:42:02,845 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 366 transitions, 4875 flow [2024-06-03 18:42:02,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:02,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:02,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:02,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-03 18:42:02,845 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:02,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:02,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1629535037, now seen corresponding path program 3 times [2024-06-03 18:42:02,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:02,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504332737] [2024-06-03 18:42:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:02,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:04,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:04,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504332737] [2024-06-03 18:42:04,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504332737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:04,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:04,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:04,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742911772] [2024-06-03 18:42:04,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:04,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:04,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:04,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:04,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:04,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:04,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 366 transitions, 4875 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:04,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:04,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:04,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:05,388 INFO L124 PetriNetUnfolderBase]: 1077/1928 cut-off events. [2024-06-03 18:42:05,388 INFO L125 PetriNetUnfolderBase]: For 182013/182013 co-relation queries the response was YES. [2024-06-03 18:42:05,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13869 conditions, 1928 events. 1077/1928 cut-off events. For 182013/182013 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11355 event pairs, 239 based on Foata normal form. 1/1929 useless extension candidates. Maximal degree in co-relation 13669. Up to 1727 conditions per place. [2024-06-03 18:42:05,413 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 314 selfloop transitions, 67 changer transitions 0/383 dead transitions. [2024-06-03 18:42:05,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 383 transitions, 5685 flow [2024-06-03 18:42:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 18:42:05,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-03 18:42:05,414 INFO L175 Difference]: Start difference. First operand has 433 places, 366 transitions, 4875 flow. Second operand 10 states and 109 transitions. [2024-06-03 18:42:05,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 383 transitions, 5685 flow [2024-06-03 18:42:06,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 383 transitions, 5481 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-03 18:42:06,275 INFO L231 Difference]: Finished difference. Result has 434 places, 366 transitions, 4825 flow [2024-06-03 18:42:06,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4825, PETRI_PLACES=434, PETRI_TRANSITIONS=366} [2024-06-03 18:42:06,275 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 402 predicate places. [2024-06-03 18:42:06,275 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 366 transitions, 4825 flow [2024-06-03 18:42:06,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:06,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:06,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:06,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-03 18:42:06,276 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:06,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:06,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1647567077, now seen corresponding path program 7 times [2024-06-03 18:42:06,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:06,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846456859] [2024-06-03 18:42:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:06,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:07,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:07,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846456859] [2024-06-03 18:42:07,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846456859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:07,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:07,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:07,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063673161] [2024-06-03 18:42:07,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:07,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:07,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:07,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:07,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:08,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:08,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 366 transitions, 4825 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:08,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:08,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:08,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:08,932 INFO L124 PetriNetUnfolderBase]: 1083/1938 cut-off events. [2024-06-03 18:42:08,932 INFO L125 PetriNetUnfolderBase]: For 180166/180166 co-relation queries the response was YES. [2024-06-03 18:42:08,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13850 conditions, 1938 events. 1083/1938 cut-off events. For 180166/180166 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11433 event pairs, 241 based on Foata normal form. 2/1940 useless extension candidates. Maximal degree in co-relation 13649. Up to 1749 conditions per place. [2024-06-03 18:42:08,958 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 333 selfloop transitions, 52 changer transitions 0/387 dead transitions. [2024-06-03 18:42:08,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 387 transitions, 5733 flow [2024-06-03 18:42:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:42:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:42:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 18:42:08,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-03 18:42:08,959 INFO L175 Difference]: Start difference. First operand has 434 places, 366 transitions, 4825 flow. Second operand 11 states and 118 transitions. [2024-06-03 18:42:08,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 387 transitions, 5733 flow [2024-06-03 18:42:09,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 387 transitions, 5475 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-03 18:42:09,798 INFO L231 Difference]: Finished difference. Result has 433 places, 368 transitions, 4770 flow [2024-06-03 18:42:09,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4567, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4770, PETRI_PLACES=433, PETRI_TRANSITIONS=368} [2024-06-03 18:42:09,798 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 401 predicate places. [2024-06-03 18:42:09,798 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 368 transitions, 4770 flow [2024-06-03 18:42:09,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:09,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:09,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:09,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-03 18:42:09,799 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:09,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash 406910361, now seen corresponding path program 20 times [2024-06-03 18:42:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337313260] [2024-06-03 18:42:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:11,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:11,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337313260] [2024-06-03 18:42:11,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337313260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:11,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:11,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015700422] [2024-06-03 18:42:11,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:11,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:11,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:11,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:11,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:11,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:11,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 368 transitions, 4770 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:11,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:11,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:11,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:11,852 INFO L124 PetriNetUnfolderBase]: 1087/1946 cut-off events. [2024-06-03 18:42:11,852 INFO L125 PetriNetUnfolderBase]: For 179141/179141 co-relation queries the response was YES. [2024-06-03 18:42:11,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13807 conditions, 1946 events. 1087/1946 cut-off events. For 179141/179141 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11479 event pairs, 165 based on Foata normal form. 2/1948 useless extension candidates. Maximal degree in co-relation 13607. Up to 1680 conditions per place. [2024-06-03 18:42:11,878 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 308 selfloop transitions, 77 changer transitions 0/387 dead transitions. [2024-06-03 18:42:11,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 387 transitions, 5640 flow [2024-06-03 18:42:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:11,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 18:42:11,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-03 18:42:11,879 INFO L175 Difference]: Start difference. First operand has 433 places, 368 transitions, 4770 flow. Second operand 10 states and 113 transitions. [2024-06-03 18:42:11,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 387 transitions, 5640 flow [2024-06-03 18:42:12,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 387 transitions, 5483 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-03 18:42:12,758 INFO L231 Difference]: Finished difference. Result has 434 places, 369 transitions, 4821 flow [2024-06-03 18:42:12,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4613, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4821, PETRI_PLACES=434, PETRI_TRANSITIONS=369} [2024-06-03 18:42:12,758 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 402 predicate places. [2024-06-03 18:42:12,758 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 369 transitions, 4821 flow [2024-06-03 18:42:12,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:12,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:12,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:12,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-03 18:42:12,759 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:12,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:12,759 INFO L85 PathProgramCache]: Analyzing trace with hash 406905711, now seen corresponding path program 21 times [2024-06-03 18:42:12,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:12,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675456705] [2024-06-03 18:42:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:12,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:14,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:14,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675456705] [2024-06-03 18:42:14,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675456705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:14,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:14,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:14,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074925693] [2024-06-03 18:42:14,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:14,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:14,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:14,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:14,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:14,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:14,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 369 transitions, 4821 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:14,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:14,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:14,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:14,845 INFO L124 PetriNetUnfolderBase]: 1091/1954 cut-off events. [2024-06-03 18:42:14,845 INFO L125 PetriNetUnfolderBase]: For 182753/182753 co-relation queries the response was YES. [2024-06-03 18:42:14,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13947 conditions, 1954 events. 1091/1954 cut-off events. For 182753/182753 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11562 event pairs, 161 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 13746. Up to 1688 conditions per place. [2024-06-03 18:42:14,872 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 311 selfloop transitions, 75 changer transitions 0/388 dead transitions. [2024-06-03 18:42:14,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 388 transitions, 5693 flow [2024-06-03 18:42:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 18:42:14,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-03 18:42:14,873 INFO L175 Difference]: Start difference. First operand has 434 places, 369 transitions, 4821 flow. Second operand 10 states and 112 transitions. [2024-06-03 18:42:14,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 388 transitions, 5693 flow [2024-06-03 18:42:15,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 388 transitions, 5495 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:15,789 INFO L231 Difference]: Finished difference. Result has 436 places, 370 transitions, 4829 flow [2024-06-03 18:42:15,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4829, PETRI_PLACES=436, PETRI_TRANSITIONS=370} [2024-06-03 18:42:15,790 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 404 predicate places. [2024-06-03 18:42:15,790 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 370 transitions, 4829 flow [2024-06-03 18:42:15,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:15,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:15,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:15,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-03 18:42:15,790 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:15,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2094572285, now seen corresponding path program 22 times [2024-06-03 18:42:15,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:15,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547022457] [2024-06-03 18:42:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:15,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:17,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:17,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547022457] [2024-06-03 18:42:17,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547022457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:17,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:17,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:17,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834809781] [2024-06-03 18:42:17,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:17,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:17,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:17,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:17,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:17,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:17,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 370 transitions, 4829 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:17,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:17,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:17,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:17,796 INFO L124 PetriNetUnfolderBase]: 1095/1962 cut-off events. [2024-06-03 18:42:17,796 INFO L125 PetriNetUnfolderBase]: For 182693/182693 co-relation queries the response was YES. [2024-06-03 18:42:17,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13976 conditions, 1962 events. 1095/1962 cut-off events. For 182693/182693 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11619 event pairs, 197 based on Foata normal form. 2/1964 useless extension candidates. Maximal degree in co-relation 13774. Up to 1767 conditions per place. [2024-06-03 18:42:17,824 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 328 selfloop transitions, 57 changer transitions 0/387 dead transitions. [2024-06-03 18:42:17,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 387 transitions, 5691 flow [2024-06-03 18:42:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 18:42:17,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-03 18:42:17,825 INFO L175 Difference]: Start difference. First operand has 436 places, 370 transitions, 4829 flow. Second operand 10 states and 111 transitions. [2024-06-03 18:42:17,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 387 transitions, 5691 flow [2024-06-03 18:42:18,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 387 transitions, 5497 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:18,846 INFO L231 Difference]: Finished difference. Result has 438 places, 371 transitions, 4805 flow [2024-06-03 18:42:18,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4637, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4805, PETRI_PLACES=438, PETRI_TRANSITIONS=371} [2024-06-03 18:42:18,847 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 406 predicate places. [2024-06-03 18:42:18,847 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 371 transitions, 4805 flow [2024-06-03 18:42:18,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:18,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:18,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:18,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-03 18:42:18,848 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:18,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2094576935, now seen corresponding path program 23 times [2024-06-03 18:42:18,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:18,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652385006] [2024-06-03 18:42:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:18,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:19,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652385006] [2024-06-03 18:42:19,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652385006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:19,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:19,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:42:19,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31786861] [2024-06-03 18:42:19,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:19,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:42:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:42:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:42:19,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:19,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 371 transitions, 4805 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:19,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:19,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:19,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:20,614 INFO L124 PetriNetUnfolderBase]: 1099/1970 cut-off events. [2024-06-03 18:42:20,615 INFO L125 PetriNetUnfolderBase]: For 182565/182565 co-relation queries the response was YES. [2024-06-03 18:42:20,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 1970 events. 1099/1970 cut-off events. For 182565/182565 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11700 event pairs, 195 based on Foata normal form. 2/1972 useless extension candidates. Maximal degree in co-relation 13760. Up to 1775 conditions per place. [2024-06-03 18:42:20,641 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 331 selfloop transitions, 55 changer transitions 0/388 dead transitions. [2024-06-03 18:42:20,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 388 transitions, 5667 flow [2024-06-03 18:42:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 18:42:20,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:42:20,642 INFO L175 Difference]: Start difference. First operand has 438 places, 371 transitions, 4805 flow. Second operand 10 states and 110 transitions. [2024-06-03 18:42:20,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 388 transitions, 5667 flow [2024-06-03 18:42:21,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 388 transitions, 5509 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:21,584 INFO L231 Difference]: Finished difference. Result has 440 places, 372 transitions, 4813 flow [2024-06-03 18:42:21,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4813, PETRI_PLACES=440, PETRI_TRANSITIONS=372} [2024-06-03 18:42:21,584 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 408 predicate places. [2024-06-03 18:42:21,585 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 372 transitions, 4813 flow [2024-06-03 18:42:21,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:21,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:21,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-03 18:42:21,585 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:21,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2094692255, now seen corresponding path program 24 times [2024-06-03 18:42:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286122572] [2024-06-03 18:42:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:22,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286122572] [2024-06-03 18:42:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286122572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:22,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:22,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:42:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285796046] [2024-06-03 18:42:22,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:22,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:42:22,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:22,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:42:22,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:42:22,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:22,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 372 transitions, 4813 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:22,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:22,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:22,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:23,405 INFO L124 PetriNetUnfolderBase]: 1103/1978 cut-off events. [2024-06-03 18:42:23,406 INFO L125 PetriNetUnfolderBase]: For 182713/182713 co-relation queries the response was YES. [2024-06-03 18:42:23,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13992 conditions, 1978 events. 1103/1978 cut-off events. For 182713/182713 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11743 event pairs, 191 based on Foata normal form. 2/1980 useless extension candidates. Maximal degree in co-relation 13788. Up to 1783 conditions per place. [2024-06-03 18:42:23,433 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 334 selfloop transitions, 53 changer transitions 0/389 dead transitions. [2024-06-03 18:42:23,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 389 transitions, 5675 flow [2024-06-03 18:42:23,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 18:42:23,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-03 18:42:23,435 INFO L175 Difference]: Start difference. First operand has 440 places, 372 transitions, 4813 flow. Second operand 10 states and 109 transitions. [2024-06-03 18:42:23,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 389 transitions, 5675 flow [2024-06-03 18:42:24,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 389 transitions, 5521 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:24,452 INFO L231 Difference]: Finished difference. Result has 442 places, 373 transitions, 4821 flow [2024-06-03 18:42:24,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4821, PETRI_PLACES=442, PETRI_TRANSITIONS=373} [2024-06-03 18:42:24,453 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 410 predicate places. [2024-06-03 18:42:24,453 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 373 transitions, 4821 flow [2024-06-03 18:42:24,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:24,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:24,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:24,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-03 18:42:24,454 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:24,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:24,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1923689931, now seen corresponding path program 8 times [2024-06-03 18:42:24,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:24,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617415376] [2024-06-03 18:42:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:24,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:26,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617415376] [2024-06-03 18:42:26,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617415376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:26,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:26,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:42:26,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831728875] [2024-06-03 18:42:26,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:26,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:42:26,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:42:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:42:26,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:26,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 373 transitions, 4821 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:26,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:26,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:26,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:27,388 INFO L124 PetriNetUnfolderBase]: 1109/1988 cut-off events. [2024-06-03 18:42:27,388 INFO L125 PetriNetUnfolderBase]: For 182622/182622 co-relation queries the response was YES. [2024-06-03 18:42:27,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14051 conditions, 1988 events. 1109/1988 cut-off events. For 182622/182622 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11851 event pairs, 169 based on Foata normal form. 2/1990 useless extension candidates. Maximal degree in co-relation 13846. Up to 1702 conditions per place. [2024-06-03 18:42:27,415 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 310 selfloop transitions, 83 changer transitions 0/395 dead transitions. [2024-06-03 18:42:27,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 395 transitions, 5757 flow [2024-06-03 18:42:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:42:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:42:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 18:42:27,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-03 18:42:27,416 INFO L175 Difference]: Start difference. First operand has 442 places, 373 transitions, 4821 flow. Second operand 11 states and 123 transitions. [2024-06-03 18:42:27,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 395 transitions, 5757 flow [2024-06-03 18:42:28,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 395 transitions, 5609 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:28,375 INFO L231 Difference]: Finished difference. Result has 445 places, 375 transitions, 4939 flow [2024-06-03 18:42:28,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4673, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4939, PETRI_PLACES=445, PETRI_TRANSITIONS=375} [2024-06-03 18:42:28,376 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 413 predicate places. [2024-06-03 18:42:28,376 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 375 transitions, 4939 flow [2024-06-03 18:42:28,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:28,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:28,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:28,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-03 18:42:28,376 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:28,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1917194811, now seen corresponding path program 9 times [2024-06-03 18:42:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:28,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588524074] [2024-06-03 18:42:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:28,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588524074] [2024-06-03 18:42:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588524074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:30,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:30,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:30,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173989268] [2024-06-03 18:42:30,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:30,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:30,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:30,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:30,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:30,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:30,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 375 transitions, 4939 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:30,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:30,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:30,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:31,747 INFO L124 PetriNetUnfolderBase]: 1131/2024 cut-off events. [2024-06-03 18:42:31,748 INFO L125 PetriNetUnfolderBase]: For 197540/197540 co-relation queries the response was YES. [2024-06-03 18:42:31,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14697 conditions, 2024 events. 1131/2024 cut-off events. For 197540/197540 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12059 event pairs, 164 based on Foata normal form. 2/2026 useless extension candidates. Maximal degree in co-relation 14491. Up to 1435 conditions per place. [2024-06-03 18:42:31,775 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 244 selfloop transitions, 159 changer transitions 0/405 dead transitions. [2024-06-03 18:42:31,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 405 transitions, 6257 flow [2024-06-03 18:42:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:42:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:42:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 18:42:31,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-03 18:42:31,776 INFO L175 Difference]: Start difference. First operand has 445 places, 375 transitions, 4939 flow. Second operand 11 states and 130 transitions. [2024-06-03 18:42:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 405 transitions, 6257 flow [2024-06-03 18:42:32,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 405 transitions, 6023 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-03 18:42:32,841 INFO L231 Difference]: Finished difference. Result has 447 places, 381 transitions, 5239 flow [2024-06-03 18:42:32,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5239, PETRI_PLACES=447, PETRI_TRANSITIONS=381} [2024-06-03 18:42:32,842 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 415 predicate places. [2024-06-03 18:42:32,842 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 381 transitions, 5239 flow [2024-06-03 18:42:32,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:32,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:32,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:32,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-03 18:42:32,843 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:32,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash 559482103, now seen corresponding path program 10 times [2024-06-03 18:42:32,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:32,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797569149] [2024-06-03 18:42:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:32,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:35,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797569149] [2024-06-03 18:42:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797569149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:35,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181360790] [2024-06-03 18:42:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:35,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:35,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:35,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:35,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 381 transitions, 5239 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:35,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:35,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:35,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:36,516 INFO L124 PetriNetUnfolderBase]: 1137/2034 cut-off events. [2024-06-03 18:42:36,516 INFO L125 PetriNetUnfolderBase]: For 201140/201140 co-relation queries the response was YES. [2024-06-03 18:42:36,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15025 conditions, 2034 events. 1137/2034 cut-off events. For 201140/201140 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 12113 event pairs, 204 based on Foata normal form. 2/2036 useless extension candidates. Maximal degree in co-relation 14818. Up to 1819 conditions per place. [2024-06-03 18:42:36,548 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 63 changer transitions 0/401 dead transitions. [2024-06-03 18:42:36,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 401 transitions, 6185 flow [2024-06-03 18:42:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:42:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:42:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 18:42:36,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:42:36,549 INFO L175 Difference]: Start difference. First operand has 447 places, 381 transitions, 5239 flow. Second operand 11 states and 121 transitions. [2024-06-03 18:42:36,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 401 transitions, 6185 flow [2024-06-03 18:42:37,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 401 transitions, 5787 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:37,605 INFO L231 Difference]: Finished difference. Result has 450 places, 383 transitions, 5075 flow [2024-06-03 18:42:37,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4867, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5075, PETRI_PLACES=450, PETRI_TRANSITIONS=383} [2024-06-03 18:42:37,605 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 418 predicate places. [2024-06-03 18:42:37,605 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 383 transitions, 5075 flow [2024-06-03 18:42:37,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:37,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:37,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:37,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-03 18:42:37,606 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:37,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash 731965049, now seen corresponding path program 25 times [2024-06-03 18:42:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93912379] [2024-06-03 18:42:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:37,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:38,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93912379] [2024-06-03 18:42:38,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93912379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:38,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:38,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:38,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899887937] [2024-06-03 18:42:38,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:38,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:38,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:38,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:39,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:39,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 383 transitions, 5075 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:39,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:39,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:39,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:39,837 INFO L124 PetriNetUnfolderBase]: 1141/2042 cut-off events. [2024-06-03 18:42:39,837 INFO L125 PetriNetUnfolderBase]: For 202952/202952 co-relation queries the response was YES. [2024-06-03 18:42:39,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14794 conditions, 2042 events. 1141/2042 cut-off events. For 202952/202952 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12194 event pairs, 168 based on Foata normal form. 2/2044 useless extension candidates. Maximal degree in co-relation 14586. Up to 1689 conditions per place. [2024-06-03 18:42:39,866 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 300 selfloop transitions, 101 changer transitions 0/403 dead transitions. [2024-06-03 18:42:39,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 403 transitions, 5983 flow [2024-06-03 18:42:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:39,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 18:42:39,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-03 18:42:39,867 INFO L175 Difference]: Start difference. First operand has 450 places, 383 transitions, 5075 flow. Second operand 10 states and 115 transitions. [2024-06-03 18:42:39,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 403 transitions, 5983 flow [2024-06-03 18:42:40,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 403 transitions, 5815 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-03 18:42:40,946 INFO L231 Difference]: Finished difference. Result has 451 places, 384 transitions, 5163 flow [2024-06-03 18:42:40,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4907, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5163, PETRI_PLACES=451, PETRI_TRANSITIONS=384} [2024-06-03 18:42:40,946 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 419 predicate places. [2024-06-03 18:42:40,947 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 384 transitions, 5163 flow [2024-06-03 18:42:40,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:40,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:40,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:40,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-03 18:42:40,947 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:40,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:40,947 INFO L85 PathProgramCache]: Analyzing trace with hash -157869091, now seen corresponding path program 2 times [2024-06-03 18:42:40,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:40,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391890995] [2024-06-03 18:42:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:40,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:42,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:42,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391890995] [2024-06-03 18:42:42,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391890995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:42,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:42,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:42,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114510115] [2024-06-03 18:42:42,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:42,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:42,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:42,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:42,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:42,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:42,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 384 transitions, 5163 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:42,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:42,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:42,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:43,551 INFO L124 PetriNetUnfolderBase]: 1145/2050 cut-off events. [2024-06-03 18:42:43,551 INFO L125 PetriNetUnfolderBase]: For 206839/206839 co-relation queries the response was YES. [2024-06-03 18:42:43,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14956 conditions, 2050 events. 1145/2050 cut-off events. For 206839/206839 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12311 event pairs, 287 based on Foata normal form. 2/2052 useless extension candidates. Maximal degree in co-relation 14747. Up to 1851 conditions per place. [2024-06-03 18:42:43,579 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 341 selfloop transitions, 58 changer transitions 0/401 dead transitions. [2024-06-03 18:42:43,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 401 transitions, 6041 flow [2024-06-03 18:42:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 18:42:43,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-03 18:42:43,580 INFO L175 Difference]: Start difference. First operand has 451 places, 384 transitions, 5163 flow. Second operand 10 states and 109 transitions. [2024-06-03 18:42:43,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 401 transitions, 6041 flow [2024-06-03 18:42:44,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 401 transitions, 5797 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:44,650 INFO L231 Difference]: Finished difference. Result has 453 places, 385 transitions, 5075 flow [2024-06-03 18:42:44,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4919, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5075, PETRI_PLACES=453, PETRI_TRANSITIONS=385} [2024-06-03 18:42:44,650 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 421 predicate places. [2024-06-03 18:42:44,650 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 385 transitions, 5075 flow [2024-06-03 18:42:44,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:44,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:44,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:44,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-03 18:42:44,651 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:44,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:44,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1374099977, now seen corresponding path program 11 times [2024-06-03 18:42:44,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:44,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793270334] [2024-06-03 18:42:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:44,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:46,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:46,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793270334] [2024-06-03 18:42:46,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793270334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:46,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:46,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:46,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953384664] [2024-06-03 18:42:46,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:46,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:46,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:46,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:46,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:46,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 385 transitions, 5075 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:46,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:46,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:46,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:47,576 INFO L124 PetriNetUnfolderBase]: 1156/2068 cut-off events. [2024-06-03 18:42:47,576 INFO L125 PetriNetUnfolderBase]: For 213222/213222 co-relation queries the response was YES. [2024-06-03 18:42:47,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15123 conditions, 2068 events. 1156/2068 cut-off events. For 213222/213222 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12394 event pairs, 169 based on Foata normal form. 2/2070 useless extension candidates. Maximal degree in co-relation 14913. Up to 1469 conditions per place. [2024-06-03 18:42:47,607 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 267 selfloop transitions, 143 changer transitions 0/412 dead transitions. [2024-06-03 18:42:47,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 412 transitions, 6583 flow [2024-06-03 18:42:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:42:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:42:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 18:42:47,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-03 18:42:47,608 INFO L175 Difference]: Start difference. First operand has 453 places, 385 transitions, 5075 flow. Second operand 11 states and 131 transitions. [2024-06-03 18:42:47,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 412 transitions, 6583 flow [2024-06-03 18:42:48,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 412 transitions, 6437 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:48,802 INFO L231 Difference]: Finished difference. Result has 456 places, 389 transitions, 5379 flow [2024-06-03 18:42:48,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4937, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5379, PETRI_PLACES=456, PETRI_TRANSITIONS=389} [2024-06-03 18:42:48,803 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 424 predicate places. [2024-06-03 18:42:48,803 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 389 transitions, 5379 flow [2024-06-03 18:42:48,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:48,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:48,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:48,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-03 18:42:48,803 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:48,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1945785423, now seen corresponding path program 12 times [2024-06-03 18:42:48,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:48,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613660280] [2024-06-03 18:42:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:50,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:50,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613660280] [2024-06-03 18:42:50,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613660280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:50,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:50,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:50,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802332849] [2024-06-03 18:42:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:50,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:50,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:50,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 389 transitions, 5379 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:50,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:50,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:50,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:51,996 INFO L124 PetriNetUnfolderBase]: 1152/2062 cut-off events. [2024-06-03 18:42:51,996 INFO L125 PetriNetUnfolderBase]: For 196687/196687 co-relation queries the response was YES. [2024-06-03 18:42:52,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15000 conditions, 2062 events. 1152/2062 cut-off events. For 196687/196687 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12339 event pairs, 168 based on Foata normal form. 2/2064 useless extension candidates. Maximal degree in co-relation 14789. Up to 1466 conditions per place. [2024-06-03 18:42:52,027 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 245 selfloop transitions, 165 changer transitions 0/412 dead transitions. [2024-06-03 18:42:52,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 412 transitions, 6507 flow [2024-06-03 18:42:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:42:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:42:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 18:42:52,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-03 18:42:52,028 INFO L175 Difference]: Start difference. First operand has 456 places, 389 transitions, 5379 flow. Second operand 11 states and 129 transitions. [2024-06-03 18:42:52,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 412 transitions, 6507 flow [2024-06-03 18:42:53,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 412 transitions, 6209 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-03 18:42:53,049 INFO L231 Difference]: Finished difference. Result has 460 places, 389 transitions, 5419 flow [2024-06-03 18:42:53,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5081, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5419, PETRI_PLACES=460, PETRI_TRANSITIONS=389} [2024-06-03 18:42:53,050 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 428 predicate places. [2024-06-03 18:42:53,050 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 389 transitions, 5419 flow [2024-06-03 18:42:53,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:53,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:53,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:53,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-03 18:42:53,050 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:53,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash 449695171, now seen corresponding path program 26 times [2024-06-03 18:42:53,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:53,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643851160] [2024-06-03 18:42:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:53,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:54,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:54,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643851160] [2024-06-03 18:42:54,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643851160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:54,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:54,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:54,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931399029] [2024-06-03 18:42:54,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:54,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:54,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:54,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:54,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:54,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 389 transitions, 5419 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:54,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:54,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:54,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:55,043 INFO L124 PetriNetUnfolderBase]: 1156/2072 cut-off events. [2024-06-03 18:42:55,043 INFO L125 PetriNetUnfolderBase]: For 199678/199678 co-relation queries the response was YES. [2024-06-03 18:42:55,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15163 conditions, 2072 events. 1156/2072 cut-off events. For 199678/199678 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 12431 event pairs, 221 based on Foata normal form. 2/2074 useless extension candidates. Maximal degree in co-relation 14951. Up to 1897 conditions per place. [2024-06-03 18:42:55,070 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 355 selfloop transitions, 48 changer transitions 0/405 dead transitions. [2024-06-03 18:42:55,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 405 transitions, 6313 flow [2024-06-03 18:42:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 18:42:55,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-03 18:42:55,071 INFO L175 Difference]: Start difference. First operand has 460 places, 389 transitions, 5419 flow. Second operand 10 states and 109 transitions. [2024-06-03 18:42:55,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 405 transitions, 6313 flow [2024-06-03 18:42:56,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 405 transitions, 6051 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-03 18:42:56,233 INFO L231 Difference]: Finished difference. Result has 461 places, 390 transitions, 5305 flow [2024-06-03 18:42:56,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5157, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5305, PETRI_PLACES=461, PETRI_TRANSITIONS=390} [2024-06-03 18:42:56,233 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 429 predicate places. [2024-06-03 18:42:56,233 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 390 transitions, 5305 flow [2024-06-03 18:42:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:56,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:56,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:56,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-03 18:42:56,234 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:56,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:56,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2019671999, now seen corresponding path program 27 times [2024-06-03 18:42:56,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:56,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734929124] [2024-06-03 18:42:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:56,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:42:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:42:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:42:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734929124] [2024-06-03 18:42:57,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734929124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:42:57,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:42:57,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:42:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899948595] [2024-06-03 18:42:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:42:57,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:42:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:42:57,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:42:57,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:42:57,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:42:57,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 390 transitions, 5305 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:57,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:42:57,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:42:57,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:42:58,515 INFO L124 PetriNetUnfolderBase]: 1160/2080 cut-off events. [2024-06-03 18:42:58,515 INFO L125 PetriNetUnfolderBase]: For 204049/204049 co-relation queries the response was YES. [2024-06-03 18:42:58,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15063 conditions, 2080 events. 1160/2080 cut-off events. For 204049/204049 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12512 event pairs, 209 based on Foata normal form. 2/2082 useless extension candidates. Maximal degree in co-relation 14850. Up to 1874 conditions per place. [2024-06-03 18:42:58,546 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 349 selfloop transitions, 57 changer transitions 0/408 dead transitions. [2024-06-03 18:42:58,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 408 transitions, 6217 flow [2024-06-03 18:42:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:42:58,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:42:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 18:42:58,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-03 18:42:58,547 INFO L175 Difference]: Start difference. First operand has 461 places, 390 transitions, 5305 flow. Second operand 10 states and 113 transitions. [2024-06-03 18:42:58,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 408 transitions, 6217 flow [2024-06-03 18:42:59,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 408 transitions, 6079 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-03 18:42:59,688 INFO L231 Difference]: Finished difference. Result has 463 places, 391 transitions, 5336 flow [2024-06-03 18:42:59,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5336, PETRI_PLACES=463, PETRI_TRANSITIONS=391} [2024-06-03 18:42:59,688 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 431 predicate places. [2024-06-03 18:42:59,689 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 391 transitions, 5336 flow [2024-06-03 18:42:59,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:42:59,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:42:59,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:42:59,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-03 18:42:59,689 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:42:59,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:42:59,689 INFO L85 PathProgramCache]: Analyzing trace with hash 108407987, now seen corresponding path program 13 times [2024-06-03 18:42:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:42:59,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593820132] [2024-06-03 18:42:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:42:59,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:42:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:01,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:01,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593820132] [2024-06-03 18:43:01,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593820132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:01,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:01,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:01,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91028818] [2024-06-03 18:43:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:01,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:01,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:01,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:01,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:01,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:01,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 391 transitions, 5336 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:01,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:01,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:01,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:02,740 INFO L124 PetriNetUnfolderBase]: 1176/2106 cut-off events. [2024-06-03 18:43:02,740 INFO L125 PetriNetUnfolderBase]: For 222798/222798 co-relation queries the response was YES. [2024-06-03 18:43:02,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15625 conditions, 2106 events. 1176/2106 cut-off events. For 222798/222798 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12640 event pairs, 152 based on Foata normal form. 2/2108 useless extension candidates. Maximal degree in co-relation 15411. Up to 1737 conditions per place. [2024-06-03 18:43:02,765 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 96 changer transitions 0/419 dead transitions. [2024-06-03 18:43:02,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 419 transitions, 6674 flow [2024-06-03 18:43:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:43:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:43:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 18:43:02,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-03 18:43:02,766 INFO L175 Difference]: Start difference. First operand has 463 places, 391 transitions, 5336 flow. Second operand 11 states and 131 transitions. [2024-06-03 18:43:02,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 419 transitions, 6674 flow [2024-06-03 18:43:03,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 419 transitions, 6517 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:03,947 INFO L231 Difference]: Finished difference. Result has 466 places, 395 transitions, 5560 flow [2024-06-03 18:43:03,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5179, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5560, PETRI_PLACES=466, PETRI_TRANSITIONS=395} [2024-06-03 18:43:03,947 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 434 predicate places. [2024-06-03 18:43:03,947 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 395 transitions, 5560 flow [2024-06-03 18:43:03,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:03,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:03,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:03,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-03 18:43:03,948 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:03,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash 108399617, now seen corresponding path program 14 times [2024-06-03 18:43:03,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:03,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254064559] [2024-06-03 18:43:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:06,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254064559] [2024-06-03 18:43:06,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254064559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:06,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:06,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:06,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360289075] [2024-06-03 18:43:06,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:06,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:06,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:06,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:06,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:06,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:06,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 395 transitions, 5560 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:06,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:06,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:06,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:07,481 INFO L124 PetriNetUnfolderBase]: 1182/2116 cut-off events. [2024-06-03 18:43:07,481 INFO L125 PetriNetUnfolderBase]: For 226619/226619 co-relation queries the response was YES. [2024-06-03 18:43:07,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15842 conditions, 2116 events. 1182/2116 cut-off events. For 226619/226619 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12723 event pairs, 155 based on Foata normal form. 2/2118 useless extension candidates. Maximal degree in co-relation 15627. Up to 1743 conditions per place. [2024-06-03 18:43:07,515 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 322 selfloop transitions, 96 changer transitions 0/420 dead transitions. [2024-06-03 18:43:07,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 420 transitions, 6810 flow [2024-06-03 18:43:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:43:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:43:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 18:43:07,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-03 18:43:07,516 INFO L175 Difference]: Start difference. First operand has 466 places, 395 transitions, 5560 flow. Second operand 11 states and 131 transitions. [2024-06-03 18:43:07,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 420 transitions, 6810 flow [2024-06-03 18:43:08,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 420 transitions, 6492 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:08,815 INFO L231 Difference]: Finished difference. Result has 469 places, 397 transitions, 5533 flow [2024-06-03 18:43:08,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5270, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5533, PETRI_PLACES=469, PETRI_TRANSITIONS=397} [2024-06-03 18:43:08,815 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 437 predicate places. [2024-06-03 18:43:08,815 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 397 transitions, 5533 flow [2024-06-03 18:43:08,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:08,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:08,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:08,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-03 18:43:08,815 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:08,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2026101089, now seen corresponding path program 28 times [2024-06-03 18:43:08,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:08,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321424488] [2024-06-03 18:43:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:10,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:10,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321424488] [2024-06-03 18:43:10,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321424488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:10,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:10,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:10,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286404657] [2024-06-03 18:43:10,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:10,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:10,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:10,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:10,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:10,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:10,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 397 transitions, 5533 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:10,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:10,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:10,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:11,123 INFO L124 PetriNetUnfolderBase]: 1186/2124 cut-off events. [2024-06-03 18:43:11,123 INFO L125 PetriNetUnfolderBase]: For 229101/229101 co-relation queries the response was YES. [2024-06-03 18:43:11,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15804 conditions, 2124 events. 1186/2124 cut-off events. For 229101/229101 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12812 event pairs, 210 based on Foata normal form. 2/2126 useless extension candidates. Maximal degree in co-relation 15588. Up to 1887 conditions per place. [2024-06-03 18:43:11,155 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 349 selfloop transitions, 65 changer transitions 0/416 dead transitions. [2024-06-03 18:43:11,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 416 transitions, 6469 flow [2024-06-03 18:43:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:43:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:43:11,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 18:43:11,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-03 18:43:11,156 INFO L175 Difference]: Start difference. First operand has 469 places, 397 transitions, 5533 flow. Second operand 10 states and 115 transitions. [2024-06-03 18:43:11,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 416 transitions, 6469 flow [2024-06-03 18:43:12,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 416 transitions, 6238 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:12,394 INFO L231 Difference]: Finished difference. Result has 471 places, 398 transitions, 5489 flow [2024-06-03 18:43:12,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5302, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5489, PETRI_PLACES=471, PETRI_TRANSITIONS=398} [2024-06-03 18:43:12,394 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-03 18:43:12,394 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 398 transitions, 5489 flow [2024-06-03 18:43:12,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:12,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:12,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:12,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-03 18:43:12,395 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:12,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:12,396 INFO L85 PathProgramCache]: Analyzing trace with hash 108162033, now seen corresponding path program 29 times [2024-06-03 18:43:12,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:12,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769636577] [2024-06-03 18:43:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:12,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:13,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769636577] [2024-06-03 18:43:13,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769636577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:13,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:13,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:13,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020329556] [2024-06-03 18:43:13,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:13,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:13,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:14,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:14,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 398 transitions, 5489 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:14,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:14,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:14,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:14,909 INFO L124 PetriNetUnfolderBase]: 1190/2132 cut-off events. [2024-06-03 18:43:14,909 INFO L125 PetriNetUnfolderBase]: For 233534/233534 co-relation queries the response was YES. [2024-06-03 18:43:14,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15820 conditions, 2132 events. 1190/2132 cut-off events. For 233534/233534 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 12878 event pairs, 158 based on Foata normal form. 2/2134 useless extension candidates. Maximal degree in co-relation 15603. Up to 1820 conditions per place. [2024-06-03 18:43:14,939 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 331 selfloop transitions, 85 changer transitions 0/418 dead transitions. [2024-06-03 18:43:14,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 418 transitions, 6437 flow [2024-06-03 18:43:14,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:43:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:43:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 18:43:14,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-03 18:43:14,940 INFO L175 Difference]: Start difference. First operand has 471 places, 398 transitions, 5489 flow. Second operand 10 states and 116 transitions. [2024-06-03 18:43:14,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 418 transitions, 6437 flow [2024-06-03 18:43:16,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 418 transitions, 6262 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:16,215 INFO L231 Difference]: Finished difference. Result has 473 places, 399 transitions, 5542 flow [2024-06-03 18:43:16,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5542, PETRI_PLACES=473, PETRI_TRANSITIONS=399} [2024-06-03 18:43:16,216 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 441 predicate places. [2024-06-03 18:43:16,216 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 399 transitions, 5542 flow [2024-06-03 18:43:16,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:16,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:16,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:16,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-03 18:43:16,216 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:16,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash 108168977, now seen corresponding path program 15 times [2024-06-03 18:43:16,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:16,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720684531] [2024-06-03 18:43:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:17,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:17,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720684531] [2024-06-03 18:43:17,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720684531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:17,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:17,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:17,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851405440] [2024-06-03 18:43:17,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:17,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:17,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:18,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:18,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 399 transitions, 5542 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:18,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:18,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:18,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:18,951 INFO L124 PetriNetUnfolderBase]: 1196/2142 cut-off events. [2024-06-03 18:43:18,952 INFO L125 PetriNetUnfolderBase]: For 236675/236675 co-relation queries the response was YES. [2024-06-03 18:43:18,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15929 conditions, 2142 events. 1196/2142 cut-off events. For 236675/236675 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 12932 event pairs, 155 based on Foata normal form. 2/2144 useless extension candidates. Maximal degree in co-relation 15711. Up to 1765 conditions per place. [2024-06-03 18:43:18,982 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 323 selfloop transitions, 96 changer transitions 0/421 dead transitions. [2024-06-03 18:43:18,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 421 transitions, 6762 flow [2024-06-03 18:43:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:43:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:43:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 18:43:18,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-03 18:43:18,983 INFO L175 Difference]: Start difference. First operand has 473 places, 399 transitions, 5542 flow. Second operand 10 states and 123 transitions. [2024-06-03 18:43:18,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 421 transitions, 6762 flow [2024-06-03 18:43:20,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 421 transitions, 6544 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:20,200 INFO L231 Difference]: Finished difference. Result has 475 places, 401 transitions, 5590 flow [2024-06-03 18:43:20,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5324, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5590, PETRI_PLACES=475, PETRI_TRANSITIONS=401} [2024-06-03 18:43:20,200 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 443 predicate places. [2024-06-03 18:43:20,200 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 401 transitions, 5590 flow [2024-06-03 18:43:20,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:20,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:20,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:20,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-03 18:43:20,201 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:20,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 101732943, now seen corresponding path program 30 times [2024-06-03 18:43:20,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:20,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890771521] [2024-06-03 18:43:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:20,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:21,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:21,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890771521] [2024-06-03 18:43:21,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890771521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:21,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:21,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913805931] [2024-06-03 18:43:21,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:21,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:21,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:21,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 401 transitions, 5590 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:21,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:21,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:21,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:22,383 INFO L124 PetriNetUnfolderBase]: 1200/2150 cut-off events. [2024-06-03 18:43:22,383 INFO L125 PetriNetUnfolderBase]: For 240426/240426 co-relation queries the response was YES. [2024-06-03 18:43:22,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16017 conditions, 2150 events. 1200/2150 cut-off events. For 240426/240426 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 12961 event pairs, 160 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 15798. Up to 1852 conditions per place. [2024-06-03 18:43:22,416 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 335 selfloop transitions, 82 changer transitions 0/419 dead transitions. [2024-06-03 18:43:22,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 419 transitions, 6532 flow [2024-06-03 18:43:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:43:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:43:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 18:43:22,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-03 18:43:22,417 INFO L175 Difference]: Start difference. First operand has 475 places, 401 transitions, 5590 flow. Second operand 10 states and 112 transitions. [2024-06-03 18:43:22,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 419 transitions, 6532 flow [2024-06-03 18:43:23,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 419 transitions, 6297 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:23,642 INFO L231 Difference]: Finished difference. Result has 477 places, 402 transitions, 5579 flow [2024-06-03 18:43:23,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5355, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5579, PETRI_PLACES=477, PETRI_TRANSITIONS=402} [2024-06-03 18:43:23,642 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 445 predicate places. [2024-06-03 18:43:23,643 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 402 transitions, 5579 flow [2024-06-03 18:43:23,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:23,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:23,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:23,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-03 18:43:23,643 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:23,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash 101728293, now seen corresponding path program 31 times [2024-06-03 18:43:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:23,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922365299] [2024-06-03 18:43:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:23,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:24,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:24,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922365299] [2024-06-03 18:43:24,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922365299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:24,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:24,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:43:24,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403725849] [2024-06-03 18:43:24,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:24,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:43:24,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:24,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:43:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:43:24,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:24,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 402 transitions, 5579 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:24,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:24,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:24,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:25,566 INFO L124 PetriNetUnfolderBase]: 1204/2158 cut-off events. [2024-06-03 18:43:25,567 INFO L125 PetriNetUnfolderBase]: For 241338/241338 co-relation queries the response was YES. [2024-06-03 18:43:25,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16052 conditions, 2158 events. 1204/2158 cut-off events. For 241338/241338 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13053 event pairs, 158 based on Foata normal form. 2/2160 useless extension candidates. Maximal degree in co-relation 15833. Up to 1860 conditions per place. [2024-06-03 18:43:25,598 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 337 selfloop transitions, 81 changer transitions 0/420 dead transitions. [2024-06-03 18:43:25,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 420 transitions, 6523 flow [2024-06-03 18:43:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:43:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:43:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 18:43:25,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-03 18:43:25,599 INFO L175 Difference]: Start difference. First operand has 477 places, 402 transitions, 5579 flow. Second operand 10 states and 111 transitions. [2024-06-03 18:43:25,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 420 transitions, 6523 flow [2024-06-03 18:43:26,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 420 transitions, 6309 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:26,946 INFO L231 Difference]: Finished difference. Result has 479 places, 403 transitions, 5589 flow [2024-06-03 18:43:26,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5365, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5589, PETRI_PLACES=479, PETRI_TRANSITIONS=403} [2024-06-03 18:43:26,946 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 447 predicate places. [2024-06-03 18:43:26,946 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 403 transitions, 5589 flow [2024-06-03 18:43:26,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:26,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:26,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:26,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-03 18:43:26,947 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:26,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash -566878847, now seen corresponding path program 16 times [2024-06-03 18:43:26,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:26,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368386374] [2024-06-03 18:43:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:26,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:28,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:28,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368386374] [2024-06-03 18:43:28,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368386374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:28,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:28,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961460469] [2024-06-03 18:43:28,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:28,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:28,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:28,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:28,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:28,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:28,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 403 transitions, 5589 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:28,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:28,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:28,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:29,823 INFO L124 PetriNetUnfolderBase]: 1210/2168 cut-off events. [2024-06-03 18:43:29,823 INFO L125 PetriNetUnfolderBase]: For 243907/243907 co-relation queries the response was YES. [2024-06-03 18:43:29,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16073 conditions, 2168 events. 1210/2168 cut-off events. For 243907/243907 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 13135 event pairs, 144 based on Foata normal form. 2/2170 useless extension candidates. Maximal degree in co-relation 15853. Up to 1149 conditions per place. [2024-06-03 18:43:29,855 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 233 selfloop transitions, 195 changer transitions 0/430 dead transitions. [2024-06-03 18:43:29,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 430 transitions, 7085 flow [2024-06-03 18:43:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:43:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:43:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 18:43:29,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-03 18:43:29,856 INFO L175 Difference]: Start difference. First operand has 479 places, 403 transitions, 5589 flow. Second operand 11 states and 137 transitions. [2024-06-03 18:43:29,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 430 transitions, 7085 flow [2024-06-03 18:43:31,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 430 transitions, 6871 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:31,037 INFO L231 Difference]: Finished difference. Result has 482 places, 405 transitions, 5822 flow [2024-06-03 18:43:31,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5375, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5822, PETRI_PLACES=482, PETRI_TRANSITIONS=405} [2024-06-03 18:43:31,037 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 450 predicate places. [2024-06-03 18:43:31,038 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 405 transitions, 5822 flow [2024-06-03 18:43:31,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:31,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:31,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:31,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-03 18:43:31,038 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:31,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:31,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1848964919, now seen corresponding path program 32 times [2024-06-03 18:43:31,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:31,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281669406] [2024-06-03 18:43:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:31,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:32,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:32,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281669406] [2024-06-03 18:43:32,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281669406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:32,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:32,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:32,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526589375] [2024-06-03 18:43:32,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:32,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:32,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:32,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 405 transitions, 5822 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:32,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:32,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:32,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:33,083 INFO L124 PetriNetUnfolderBase]: 1214/2176 cut-off events. [2024-06-03 18:43:33,083 INFO L125 PetriNetUnfolderBase]: For 249009/249009 co-relation queries the response was YES. [2024-06-03 18:43:33,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16451 conditions, 2176 events. 1214/2176 cut-off events. For 249009/249009 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13194 event pairs, 234 based on Foata normal form. 2/2178 useless extension candidates. Maximal degree in co-relation 16230. Up to 2001 conditions per place. [2024-06-03 18:43:33,112 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 372 selfloop transitions, 47 changer transitions 0/421 dead transitions. [2024-06-03 18:43:33,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 421 transitions, 6758 flow [2024-06-03 18:43:33,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:43:33,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:43:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 18:43:33,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-03 18:43:33,113 INFO L175 Difference]: Start difference. First operand has 482 places, 405 transitions, 5822 flow. Second operand 10 states and 108 transitions. [2024-06-03 18:43:33,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 421 transitions, 6758 flow [2024-06-03 18:43:34,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 421 transitions, 6308 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-03 18:43:34,331 INFO L231 Difference]: Finished difference. Result has 483 places, 406 transitions, 5530 flow [2024-06-03 18:43:34,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5372, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5530, PETRI_PLACES=483, PETRI_TRANSITIONS=406} [2024-06-03 18:43:34,331 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 451 predicate places. [2024-06-03 18:43:34,331 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 406 transitions, 5530 flow [2024-06-03 18:43:34,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:34,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:34,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:34,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-03 18:43:34,332 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:34,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2026108033, now seen corresponding path program 17 times [2024-06-03 18:43:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:34,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301927911] [2024-06-03 18:43:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:34,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301927911] [2024-06-03 18:43:36,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301927911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:36,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:36,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651086755] [2024-06-03 18:43:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:36,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:36,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:36,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:36,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:36,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 406 transitions, 5530 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:36,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:36,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:36,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:37,657 INFO L124 PetriNetUnfolderBase]: 1220/2186 cut-off events. [2024-06-03 18:43:37,657 INFO L125 PetriNetUnfolderBase]: For 252153/252153 co-relation queries the response was YES. [2024-06-03 18:43:37,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16140 conditions, 2186 events. 1220/2186 cut-off events. For 252153/252153 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13287 event pairs, 218 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 15918. Up to 1929 conditions per place. [2024-06-03 18:43:37,690 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 356 selfloop transitions, 70 changer transitions 0/428 dead transitions. [2024-06-03 18:43:37,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 428 transitions, 6540 flow [2024-06-03 18:43:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:43:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:43:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 18:43:37,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-03 18:43:37,691 INFO L175 Difference]: Start difference. First operand has 483 places, 406 transitions, 5530 flow. Second operand 11 states and 125 transitions. [2024-06-03 18:43:37,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 428 transitions, 6540 flow [2024-06-03 18:43:38,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 428 transitions, 6392 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:38,951 INFO L231 Difference]: Finished difference. Result has 486 places, 408 transitions, 5624 flow [2024-06-03 18:43:38,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5382, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5624, PETRI_PLACES=486, PETRI_TRANSITIONS=408} [2024-06-03 18:43:38,951 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 454 predicate places. [2024-06-03 18:43:38,952 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 408 transitions, 5624 flow [2024-06-03 18:43:38,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:38,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:38,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:38,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-03 18:43:38,952 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:38,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash 101912867, now seen corresponding path program 18 times [2024-06-03 18:43:38,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:38,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284250110] [2024-06-03 18:43:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284250110] [2024-06-03 18:43:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284250110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:41,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:41,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281062432] [2024-06-03 18:43:41,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:41,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:41,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:41,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 408 transitions, 5624 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:41,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:41,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:41,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:42,136 INFO L124 PetriNetUnfolderBase]: 1216/2180 cut-off events. [2024-06-03 18:43:42,136 INFO L125 PetriNetUnfolderBase]: For 238453/238453 co-relation queries the response was YES. [2024-06-03 18:43:42,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15831 conditions, 2180 events. 1216/2180 cut-off events. For 238453/238453 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13217 event pairs, 167 based on Foata normal form. 2/2182 useless extension candidates. Maximal degree in co-relation 15608. Up to 1872 conditions per place. [2024-06-03 18:43:42,167 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 339 selfloop transitions, 84 changer transitions 0/425 dead transitions. [2024-06-03 18:43:42,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 425 transitions, 6526 flow [2024-06-03 18:43:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:43:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:43:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 18:43:42,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-03 18:43:42,168 INFO L175 Difference]: Start difference. First operand has 486 places, 408 transitions, 5624 flow. Second operand 10 states and 114 transitions. [2024-06-03 18:43:42,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 425 transitions, 6526 flow [2024-06-03 18:43:43,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 425 transitions, 6258 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-03 18:43:43,457 INFO L231 Difference]: Finished difference. Result has 487 places, 408 transitions, 5530 flow [2024-06-03 18:43:43,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5356, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5530, PETRI_PLACES=487, PETRI_TRANSITIONS=408} [2024-06-03 18:43:43,457 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-03 18:43:43,458 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 408 transitions, 5530 flow [2024-06-03 18:43:43,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:43,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:43,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:43,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-03 18:43:43,458 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:43,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:43,458 INFO L85 PathProgramCache]: Analyzing trace with hash 575906261, now seen corresponding path program 19 times [2024-06-03 18:43:43,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:43,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683880316] [2024-06-03 18:43:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:43,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683880316] [2024-06-03 18:43:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683880316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:44,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:44,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:44,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819745547] [2024-06-03 18:43:44,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:44,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:44,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:44,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:45,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:45,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 408 transitions, 5530 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:45,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:45,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:45,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:46,065 INFO L124 PetriNetUnfolderBase]: 1212/2172 cut-off events. [2024-06-03 18:43:46,065 INFO L125 PetriNetUnfolderBase]: For 223580/223580 co-relation queries the response was YES. [2024-06-03 18:43:46,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15435 conditions, 2172 events. 1212/2172 cut-off events. For 223580/223580 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 13231 event pairs, 427 based on Foata normal form. 2/2174 useless extension candidates. Maximal degree in co-relation 15211. Up to 2100 conditions per place. [2024-06-03 18:43:46,093 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 396 selfloop transitions, 25 changer transitions 0/423 dead transitions. [2024-06-03 18:43:46,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 423 transitions, 6416 flow [2024-06-03 18:43:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:43:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:43:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-03 18:43:46,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-03 18:43:46,094 INFO L175 Difference]: Start difference. First operand has 487 places, 408 transitions, 5530 flow. Second operand 12 states and 120 transitions. [2024-06-03 18:43:46,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 423 transitions, 6416 flow [2024-06-03 18:43:47,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 423 transitions, 6195 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-03 18:43:47,289 INFO L231 Difference]: Finished difference. Result has 488 places, 408 transitions, 5365 flow [2024-06-03 18:43:47,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5365, PETRI_PLACES=488, PETRI_TRANSITIONS=408} [2024-06-03 18:43:47,289 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-03 18:43:47,289 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 408 transitions, 5365 flow [2024-06-03 18:43:47,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:47,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:47,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:47,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-03 18:43:47,289 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:47,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:47,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2019667349, now seen corresponding path program 33 times [2024-06-03 18:43:47,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:47,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67533751] [2024-06-03 18:43:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:47,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:48,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67533751] [2024-06-03 18:43:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67533751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:48,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:48,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794477310] [2024-06-03 18:43:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:48,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:48,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:48,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 408 transitions, 5365 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:48,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:48,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:48,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:49,527 INFO L124 PetriNetUnfolderBase]: 1216/2182 cut-off events. [2024-06-03 18:43:49,527 INFO L125 PetriNetUnfolderBase]: For 224295/224295 co-relation queries the response was YES. [2024-06-03 18:43:49,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15365 conditions, 2182 events. 1216/2182 cut-off events. For 224295/224295 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13287 event pairs, 230 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 15141. Up to 1976 conditions per place. [2024-06-03 18:43:49,560 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 369 selfloop transitions, 55 changer transitions 0/426 dead transitions. [2024-06-03 18:43:49,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 426 transitions, 6323 flow [2024-06-03 18:43:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:43:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:43:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 18:43:49,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-03 18:43:49,561 INFO L175 Difference]: Start difference. First operand has 488 places, 408 transitions, 5365 flow. Second operand 10 states and 112 transitions. [2024-06-03 18:43:49,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 426 transitions, 6323 flow [2024-06-03 18:43:50,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 426 transitions, 6263 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 18:43:50,803 INFO L231 Difference]: Finished difference. Result has 487 places, 409 transitions, 5482 flow [2024-06-03 18:43:50,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5305, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5482, PETRI_PLACES=487, PETRI_TRANSITIONS=409} [2024-06-03 18:43:50,803 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-03 18:43:50,803 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 409 transitions, 5482 flow [2024-06-03 18:43:50,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:50,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:50,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:50,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-03 18:43:50,804 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:50,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1811802819, now seen corresponding path program 20 times [2024-06-03 18:43:50,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:50,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637822474] [2024-06-03 18:43:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:50,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:53,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:53,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637822474] [2024-06-03 18:43:53,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637822474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:53,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:53,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844224018] [2024-06-03 18:43:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:53,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:53,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:53,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:53,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:53,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 409 transitions, 5482 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:53,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:53,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:53,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:54,498 INFO L124 PetriNetUnfolderBase]: 1222/2192 cut-off events. [2024-06-03 18:43:54,498 INFO L125 PetriNetUnfolderBase]: For 229375/229375 co-relation queries the response was YES. [2024-06-03 18:43:54,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15610 conditions, 2192 events. 1222/2192 cut-off events. For 229375/229375 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13335 event pairs, 226 based on Foata normal form. 2/2194 useless extension candidates. Maximal degree in co-relation 15385. Up to 1966 conditions per place. [2024-06-03 18:43:54,528 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 366 selfloop transitions, 62 changer transitions 0/430 dead transitions. [2024-06-03 18:43:54,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 430 transitions, 6494 flow [2024-06-03 18:43:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:43:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:43:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 18:43:54,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-03 18:43:54,529 INFO L175 Difference]: Start difference. First operand has 487 places, 409 transitions, 5482 flow. Second operand 11 states and 123 transitions. [2024-06-03 18:43:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 430 transitions, 6494 flow [2024-06-03 18:43:55,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 430 transitions, 6329 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-03 18:43:55,842 INFO L231 Difference]: Finished difference. Result has 490 places, 411 transitions, 5547 flow [2024-06-03 18:43:55,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5317, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5547, PETRI_PLACES=490, PETRI_TRANSITIONS=411} [2024-06-03 18:43:55,842 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-03 18:43:55,842 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 411 transitions, 5547 flow [2024-06-03 18:43:55,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:55,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:55,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:55,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-03 18:43:55,843 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:55,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:55,843 INFO L85 PathProgramCache]: Analyzing trace with hash 341884357, now seen corresponding path program 21 times [2024-06-03 18:43:55,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:55,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773676606] [2024-06-03 18:43:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:55,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:43:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:43:57,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:43:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773676606] [2024-06-03 18:43:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773676606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:43:57,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:43:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:43:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636652244] [2024-06-03 18:43:57,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:43:57,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:43:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:43:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:43:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:43:57,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:43:57,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 411 transitions, 5547 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:57,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:43:57,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:43:57,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:43:58,559 INFO L124 PetriNetUnfolderBase]: 1218/2186 cut-off events. [2024-06-03 18:43:58,559 INFO L125 PetriNetUnfolderBase]: For 214029/214029 co-relation queries the response was YES. [2024-06-03 18:43:58,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15219 conditions, 2186 events. 1218/2186 cut-off events. For 214029/214029 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13296 event pairs, 213 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 14993. Up to 1832 conditions per place. [2024-06-03 18:43:58,592 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 342 selfloop transitions, 92 changer transitions 0/436 dead transitions. [2024-06-03 18:43:58,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 436 transitions, 6763 flow [2024-06-03 18:43:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:43:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:43:58,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 18:43:58,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-03 18:43:58,593 INFO L175 Difference]: Start difference. First operand has 490 places, 411 transitions, 5547 flow. Second operand 12 states and 139 transitions. [2024-06-03 18:43:58,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 436 transitions, 6763 flow [2024-06-03 18:43:59,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 436 transitions, 6557 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-03 18:43:59,804 INFO L231 Difference]: Finished difference. Result has 493 places, 411 transitions, 5533 flow [2024-06-03 18:43:59,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5341, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5533, PETRI_PLACES=493, PETRI_TRANSITIONS=411} [2024-06-03 18:43:59,805 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-03 18:43:59,805 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 411 transitions, 5533 flow [2024-06-03 18:43:59,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:43:59,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:43:59,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:43:59,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-03 18:43:59,805 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:43:59,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:43:59,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2026347353, now seen corresponding path program 3 times [2024-06-03 18:43:59,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:43:59,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496286144] [2024-06-03 18:43:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:43:59,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:43:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:01,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:01,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496286144] [2024-06-03 18:44:01,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496286144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:01,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:01,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:44:01,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168669485] [2024-06-03 18:44:01,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:01,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:44:01,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:01,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:44:01,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:44:01,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:01,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 411 transitions, 5533 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:01,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:01,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:01,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:02,887 INFO L124 PetriNetUnfolderBase]: 1215/2181 cut-off events. [2024-06-03 18:44:02,887 INFO L125 PetriNetUnfolderBase]: For 198609/198609 co-relation queries the response was YES. [2024-06-03 18:44:02,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14935 conditions, 2181 events. 1215/2181 cut-off events. For 198609/198609 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13356 event pairs, 301 based on Foata normal form. 2/2183 useless extension candidates. Maximal degree in co-relation 14708. Up to 2048 conditions per place. [2024-06-03 18:44:02,921 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 382 selfloop transitions, 43 changer transitions 0/427 dead transitions. [2024-06-03 18:44:02,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 427 transitions, 6437 flow [2024-06-03 18:44:02,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:44:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:44:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 18:44:02,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-03 18:44:02,922 INFO L175 Difference]: Start difference. First operand has 493 places, 411 transitions, 5533 flow. Second operand 11 states and 115 transitions. [2024-06-03 18:44:02,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 427 transitions, 6437 flow [2024-06-03 18:44:04,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 427 transitions, 5834 flow, removed 47 selfloop flow, removed 14 redundant places. [2024-06-03 18:44:04,094 INFO L231 Difference]: Finished difference. Result has 490 places, 411 transitions, 5022 flow [2024-06-03 18:44:04,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5022, PETRI_PLACES=490, PETRI_TRANSITIONS=411} [2024-06-03 18:44:04,094 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-03 18:44:04,094 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 411 transitions, 5022 flow [2024-06-03 18:44:04,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:04,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:04,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:04,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-03 18:44:04,094 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:04,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:04,095 INFO L85 PathProgramCache]: Analyzing trace with hash -567124801, now seen corresponding path program 34 times [2024-06-03 18:44:04,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:04,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107014500] [2024-06-03 18:44:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:04,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:05,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:05,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107014500] [2024-06-03 18:44:05,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107014500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:05,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:05,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 18:44:05,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870920980] [2024-06-03 18:44:05,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:05,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 18:44:05,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:05,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 18:44:05,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 18:44:05,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:05,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 411 transitions, 5022 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:05,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:05,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:05,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:05,961 INFO L124 PetriNetUnfolderBase]: 1219/2187 cut-off events. [2024-06-03 18:44:05,961 INFO L125 PetriNetUnfolderBase]: For 200805/200805 co-relation queries the response was YES. [2024-06-03 18:44:05,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14224 conditions, 2187 events. 1219/2187 cut-off events. For 200805/200805 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13361 event pairs, 433 based on Foata normal form. 2/2189 useless extension candidates. Maximal degree in co-relation 14000. Up to 2145 conditions per place. [2024-06-03 18:44:05,993 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 406 selfloop transitions, 16 changer transitions 0/424 dead transitions. [2024-06-03 18:44:05,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 424 transitions, 5960 flow [2024-06-03 18:44:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:44:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:44:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-03 18:44:05,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-03 18:44:05,994 INFO L175 Difference]: Start difference. First operand has 490 places, 411 transitions, 5022 flow. Second operand 10 states and 99 transitions. [2024-06-03 18:44:05,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 424 transitions, 5960 flow [2024-06-03 18:44:07,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 424 transitions, 5790 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-03 18:44:07,150 INFO L231 Difference]: Finished difference. Result has 489 places, 412 transitions, 4952 flow [2024-06-03 18:44:07,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4952, PETRI_PLACES=489, PETRI_TRANSITIONS=412} [2024-06-03 18:44:07,150 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 457 predicate places. [2024-06-03 18:44:07,150 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 412 transitions, 4952 flow [2024-06-03 18:44:07,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:07,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:07,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:07,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-03 18:44:07,151 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:07,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1848849599, now seen corresponding path program 35 times [2024-06-03 18:44:07,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:07,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161065626] [2024-06-03 18:44:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:07,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:08,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:08,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161065626] [2024-06-03 18:44:08,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161065626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:08,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:08,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:44:08,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872074594] [2024-06-03 18:44:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:08,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:44:08,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:08,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:44:08,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:44:08,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:08,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 412 transitions, 4952 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:08,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:08,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:08,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:09,148 INFO L124 PetriNetUnfolderBase]: 1216/2184 cut-off events. [2024-06-03 18:44:09,149 INFO L125 PetriNetUnfolderBase]: For 182827/182827 co-relation queries the response was YES. [2024-06-03 18:44:09,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13647 conditions, 2184 events. 1216/2184 cut-off events. For 182827/182827 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13336 event pairs, 231 based on Foata normal form. 2/2186 useless extension candidates. Maximal degree in co-relation 13424. Up to 2009 conditions per place. [2024-06-03 18:44:09,182 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 379 selfloop transitions, 46 changer transitions 0/427 dead transitions. [2024-06-03 18:44:09,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 427 transitions, 5840 flow [2024-06-03 18:44:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:44:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:44:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 18:44:09,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-03 18:44:09,183 INFO L175 Difference]: Start difference. First operand has 489 places, 412 transitions, 4952 flow. Second operand 10 states and 107 transitions. [2024-06-03 18:44:09,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 427 transitions, 5840 flow [2024-06-03 18:44:10,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 427 transitions, 5735 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-03 18:44:10,278 INFO L231 Difference]: Finished difference. Result has 490 places, 412 transitions, 4943 flow [2024-06-03 18:44:10,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4847, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4943, PETRI_PLACES=490, PETRI_TRANSITIONS=412} [2024-06-03 18:44:10,278 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-03 18:44:10,279 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 412 transitions, 4943 flow [2024-06-03 18:44:10,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:10,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:10,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:10,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-03 18:44:10,279 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:10,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:10,279 INFO L85 PathProgramCache]: Analyzing trace with hash -103574663, now seen corresponding path program 22 times [2024-06-03 18:44:10,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:10,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662807056] [2024-06-03 18:44:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:10,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:11,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:11,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662807056] [2024-06-03 18:44:11,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662807056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:11,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:11,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:44:11,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666509312] [2024-06-03 18:44:11,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:11,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:44:11,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:11,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:44:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:44:11,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:11,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 412 transitions, 4943 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:11,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:11,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:11,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:12,774 INFO L124 PetriNetUnfolderBase]: 1222/2194 cut-off events. [2024-06-03 18:44:12,774 INFO L125 PetriNetUnfolderBase]: For 181402/181402 co-relation queries the response was YES. [2024-06-03 18:44:12,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13650 conditions, 2194 events. 1222/2194 cut-off events. For 181402/181402 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13365 event pairs, 146 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 13427. Up to 1172 conditions per place. [2024-06-03 18:44:12,805 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 235 selfloop transitions, 199 changer transitions 0/436 dead transitions. [2024-06-03 18:44:12,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 436 transitions, 6461 flow [2024-06-03 18:44:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:44:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:44:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-03 18:44:12,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-03 18:44:12,806 INFO L175 Difference]: Start difference. First operand has 490 places, 412 transitions, 4943 flow. Second operand 10 states and 128 transitions. [2024-06-03 18:44:12,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 436 transitions, 6461 flow [2024-06-03 18:44:13,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 436 transitions, 6169 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-03 18:44:13,966 INFO L231 Difference]: Finished difference. Result has 490 places, 414 transitions, 5100 flow [2024-06-03 18:44:13,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4651, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5100, PETRI_PLACES=490, PETRI_TRANSITIONS=414} [2024-06-03 18:44:13,966 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-03 18:44:13,967 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 414 transitions, 5100 flow [2024-06-03 18:44:13,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:13,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:13,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:13,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-03 18:44:13,967 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:13,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1853618143, now seen corresponding path program 23 times [2024-06-03 18:44:13,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:13,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677165592] [2024-06-03 18:44:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:16,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677165592] [2024-06-03 18:44:16,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677165592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:16,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:16,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:44:16,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554400196] [2024-06-03 18:44:16,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:16,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:44:16,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:44:16,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:44:16,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:16,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 414 transitions, 5100 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:16,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:16,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:16,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:17,340 INFO L124 PetriNetUnfolderBase]: 1218/2188 cut-off events. [2024-06-03 18:44:17,340 INFO L125 PetriNetUnfolderBase]: For 165266/165266 co-relation queries the response was YES. [2024-06-03 18:44:17,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13435 conditions, 2188 events. 1218/2188 cut-off events. For 165266/165266 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13339 event pairs, 237 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 13212. Up to 2003 conditions per place. [2024-06-03 18:44:17,370 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 378 selfloop transitions, 51 changer transitions 0/431 dead transitions. [2024-06-03 18:44:17,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 431 transitions, 6008 flow [2024-06-03 18:44:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:44:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:44:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 18:44:17,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-03 18:44:17,371 INFO L175 Difference]: Start difference. First operand has 490 places, 414 transitions, 5100 flow. Second operand 11 states and 119 transitions. [2024-06-03 18:44:17,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 431 transitions, 6008 flow [2024-06-03 18:44:18,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 431 transitions, 5382 flow, removed 39 selfloop flow, removed 13 redundant places. [2024-06-03 18:44:18,370 INFO L231 Difference]: Finished difference. Result has 488 places, 414 transitions, 4581 flow [2024-06-03 18:44:18,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4474, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4581, PETRI_PLACES=488, PETRI_TRANSITIONS=414} [2024-06-03 18:44:18,370 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-03 18:44:18,371 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 414 transitions, 4581 flow [2024-06-03 18:44:18,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:18,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:18,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:18,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-03 18:44:18,371 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:18,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:18,371 INFO L85 PathProgramCache]: Analyzing trace with hash -567117857, now seen corresponding path program 24 times [2024-06-03 18:44:18,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:18,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345592115] [2024-06-03 18:44:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:18,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345592115] [2024-06-03 18:44:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345592115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:20,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:20,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:44:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31866611] [2024-06-03 18:44:20,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:20,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:44:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:44:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:44:20,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:20,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 414 transitions, 4581 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:20,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:20,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:20,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:21,060 INFO L124 PetriNetUnfolderBase]: 1214/2182 cut-off events. [2024-06-03 18:44:21,060 INFO L125 PetriNetUnfolderBase]: For 139414/139414 co-relation queries the response was YES. [2024-06-03 18:44:21,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12197 conditions, 2182 events. 1214/2182 cut-off events. For 139414/139414 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13342 event pairs, 148 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 11979. Up to 1166 conditions per place. [2024-06-03 18:44:21,093 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 233 selfloop transitions, 200 changer transitions 0/435 dead transitions. [2024-06-03 18:44:21,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 435 transitions, 5779 flow [2024-06-03 18:44:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:44:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:44:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 18:44:21,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:44:21,094 INFO L175 Difference]: Start difference. First operand has 488 places, 414 transitions, 4581 flow. Second operand 11 states and 132 transitions. [2024-06-03 18:44:21,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 435 transitions, 5779 flow [2024-06-03 18:44:21,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 435 transitions, 5627 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-03 18:44:21,983 INFO L231 Difference]: Finished difference. Result has 488 places, 414 transitions, 4834 flow [2024-06-03 18:44:21,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4429, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4834, PETRI_PLACES=488, PETRI_TRANSITIONS=414} [2024-06-03 18:44:21,983 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-03 18:44:21,983 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 414 transitions, 4834 flow [2024-06-03 18:44:21,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:21,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:21,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:21,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-03 18:44:21,984 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:21,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash 931629106, now seen corresponding path program 1 times [2024-06-03 18:44:21,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:21,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441552705] [2024-06-03 18:44:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:21,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:23,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441552705] [2024-06-03 18:44:23,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441552705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:23,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:23,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:23,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195472630] [2024-06-03 18:44:23,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:23,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:23,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:23,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:23,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:23,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:23,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 414 transitions, 4834 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:23,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:23,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:23,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:24,425 INFO L124 PetriNetUnfolderBase]: 1218/2188 cut-off events. [2024-06-03 18:44:24,425 INFO L125 PetriNetUnfolderBase]: For 145843/145843 co-relation queries the response was YES. [2024-06-03 18:44:24,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12634 conditions, 2188 events. 1218/2188 cut-off events. For 145843/145843 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13393 event pairs, 256 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 12415. Up to 2036 conditions per place. [2024-06-03 18:44:24,457 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 401 selfloop transitions, 38 changer transitions 0/441 dead transitions. [2024-06-03 18:44:24,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 441 transitions, 5810 flow [2024-06-03 18:44:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-03 18:44:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-03 18:44:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 143 transitions. [2024-06-03 18:44:24,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2024-06-03 18:44:24,458 INFO L175 Difference]: Start difference. First operand has 488 places, 414 transitions, 4834 flow. Second operand 14 states and 143 transitions. [2024-06-03 18:44:24,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 441 transitions, 5810 flow [2024-06-03 18:44:25,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 441 transitions, 5403 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 18:44:25,338 INFO L231 Difference]: Finished difference. Result has 492 places, 415 transitions, 4541 flow [2024-06-03 18:44:25,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4541, PETRI_PLACES=492, PETRI_TRANSITIONS=415} [2024-06-03 18:44:25,338 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 460 predicate places. [2024-06-03 18:44:25,338 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 415 transitions, 4541 flow [2024-06-03 18:44:25,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:25,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:25,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:25,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-03 18:44:25,338 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:25,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash -320665222, now seen corresponding path program 2 times [2024-06-03 18:44:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610501042] [2024-06-03 18:44:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:26,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:26,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610501042] [2024-06-03 18:44:26,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610501042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:26,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:26,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:26,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669897193] [2024-06-03 18:44:26,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:26,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:26,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:26,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:26,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 415 transitions, 4541 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:26,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:26,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:26,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:27,795 INFO L124 PetriNetUnfolderBase]: 1222/2196 cut-off events. [2024-06-03 18:44:27,795 INFO L125 PetriNetUnfolderBase]: For 144039/144039 co-relation queries the response was YES. [2024-06-03 18:44:27,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12302 conditions, 2196 events. 1222/2196 cut-off events. For 144039/144039 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13451 event pairs, 271 based on Foata normal form. 2/2198 useless extension candidates. Maximal degree in co-relation 12082. Up to 2053 conditions per place. [2024-06-03 18:44:27,826 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 392 selfloop transitions, 45 changer transitions 0/439 dead transitions. [2024-06-03 18:44:27,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 439 transitions, 5513 flow [2024-06-03 18:44:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:44:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:44:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-06-03 18:44:27,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.317016317016317 [2024-06-03 18:44:27,827 INFO L175 Difference]: Start difference. First operand has 492 places, 415 transitions, 4541 flow. Second operand 13 states and 136 transitions. [2024-06-03 18:44:27,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 439 transitions, 5513 flow [2024-06-03 18:44:28,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 439 transitions, 5409 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-03 18:44:28,701 INFO L231 Difference]: Finished difference. Result has 493 places, 416 transitions, 4568 flow [2024-06-03 18:44:28,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4568, PETRI_PLACES=493, PETRI_TRANSITIONS=416} [2024-06-03 18:44:28,701 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-03 18:44:28,701 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 416 transitions, 4568 flow [2024-06-03 18:44:28,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:28,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:28,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:28,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-03 18:44:28,701 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:28,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash -293138152, now seen corresponding path program 3 times [2024-06-03 18:44:28,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:28,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176684077] [2024-06-03 18:44:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:28,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:30,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:30,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176684077] [2024-06-03 18:44:30,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176684077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:30,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:30,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:30,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960268544] [2024-06-03 18:44:30,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:30,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:30,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:30,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:30,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:30,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 416 transitions, 4568 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:30,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:30,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:30,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:31,272 INFO L124 PetriNetUnfolderBase]: 1226/2204 cut-off events. [2024-06-03 18:44:31,272 INFO L125 PetriNetUnfolderBase]: For 150012/150012 co-relation queries the response was YES. [2024-06-03 18:44:31,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12365 conditions, 2204 events. 1226/2204 cut-off events. For 150012/150012 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13505 event pairs, 270 based on Foata normal form. 2/2206 useless extension candidates. Maximal degree in co-relation 12144. Up to 2045 conditions per place. [2024-06-03 18:44:31,312 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 393 selfloop transitions, 45 changer transitions 0/440 dead transitions. [2024-06-03 18:44:31,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 440 transitions, 5542 flow [2024-06-03 18:44:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:44:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:44:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-03 18:44:31,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31934731934731936 [2024-06-03 18:44:31,313 INFO L175 Difference]: Start difference. First operand has 493 places, 416 transitions, 4568 flow. Second operand 13 states and 137 transitions. [2024-06-03 18:44:31,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 440 transitions, 5542 flow [2024-06-03 18:44:32,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 440 transitions, 5423 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-03 18:44:32,222 INFO L231 Difference]: Finished difference. Result has 495 places, 417 transitions, 4581 flow [2024-06-03 18:44:32,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4581, PETRI_PLACES=495, PETRI_TRANSITIONS=417} [2024-06-03 18:44:32,222 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 463 predicate places. [2024-06-03 18:44:32,222 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 417 transitions, 4581 flow [2024-06-03 18:44:32,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:32,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:32,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-03 18:44:32,223 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:32,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash -298471702, now seen corresponding path program 4 times [2024-06-03 18:44:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:32,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308368548] [2024-06-03 18:44:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:33,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:33,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308368548] [2024-06-03 18:44:33,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308368548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:33,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:33,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:33,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904892046] [2024-06-03 18:44:33,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:33,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:33,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:33,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:33,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:33,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:33,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 417 transitions, 4581 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:33,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:33,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:33,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:34,691 INFO L124 PetriNetUnfolderBase]: 1230/2212 cut-off events. [2024-06-03 18:44:34,691 INFO L125 PetriNetUnfolderBase]: For 152234/152234 co-relation queries the response was YES. [2024-06-03 18:44:34,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12420 conditions, 2212 events. 1230/2212 cut-off events. For 152234/152234 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 13594 event pairs, 279 based on Foata normal form. 2/2214 useless extension candidates. Maximal degree in co-relation 12198. Up to 2075 conditions per place. [2024-06-03 18:44:34,723 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 400 selfloop transitions, 39 changer transitions 0/441 dead transitions. [2024-06-03 18:44:34,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 441 transitions, 5557 flow [2024-06-03 18:44:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:44:34,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:44:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-03 18:44:34,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3123543123543124 [2024-06-03 18:44:34,725 INFO L175 Difference]: Start difference. First operand has 495 places, 417 transitions, 4581 flow. Second operand 13 states and 134 transitions. [2024-06-03 18:44:34,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 441 transitions, 5557 flow [2024-06-03 18:44:35,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 441 transitions, 5435 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-03 18:44:35,582 INFO L231 Difference]: Finished difference. Result has 497 places, 418 transitions, 4581 flow [2024-06-03 18:44:35,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4459, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4581, PETRI_PLACES=497, PETRI_TRANSITIONS=418} [2024-06-03 18:44:35,583 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-03 18:44:35,583 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 418 transitions, 4581 flow [2024-06-03 18:44:35,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:35,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:35,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:35,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-03 18:44:35,583 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:35,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1324078270, now seen corresponding path program 5 times [2024-06-03 18:44:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612840089] [2024-06-03 18:44:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:35,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:37,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:37,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612840089] [2024-06-03 18:44:37,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612840089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:37,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:37,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:37,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75135083] [2024-06-03 18:44:37,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:37,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:37,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:37,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:37,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:37,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 418 transitions, 4581 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:37,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:37,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:37,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:38,166 INFO L124 PetriNetUnfolderBase]: 1234/2220 cut-off events. [2024-06-03 18:44:38,166 INFO L125 PetriNetUnfolderBase]: For 154526/154526 co-relation queries the response was YES. [2024-06-03 18:44:38,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12459 conditions, 2220 events. 1234/2220 cut-off events. For 154526/154526 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13661 event pairs, 283 based on Foata normal form. 2/2222 useless extension candidates. Maximal degree in co-relation 12236. Up to 2086 conditions per place. [2024-06-03 18:44:38,195 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 404 selfloop transitions, 36 changer transitions 0/442 dead transitions. [2024-06-03 18:44:38,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 442 transitions, 5559 flow [2024-06-03 18:44:38,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:44:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:44:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 133 transitions. [2024-06-03 18:44:38,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31002331002331 [2024-06-03 18:44:38,196 INFO L175 Difference]: Start difference. First operand has 497 places, 418 transitions, 4581 flow. Second operand 13 states and 133 transitions. [2024-06-03 18:44:38,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 442 transitions, 5559 flow [2024-06-03 18:44:39,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 442 transitions, 5447 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-03 18:44:39,292 INFO L231 Difference]: Finished difference. Result has 499 places, 419 transitions, 4587 flow [2024-06-03 18:44:39,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4469, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4587, PETRI_PLACES=499, PETRI_TRANSITIONS=419} [2024-06-03 18:44:39,293 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 467 predicate places. [2024-06-03 18:44:39,293 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 419 transitions, 4587 flow [2024-06-03 18:44:39,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:39,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:39,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:39,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-03 18:44:39,293 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:39,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1489240358, now seen corresponding path program 6 times [2024-06-03 18:44:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:39,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047881708] [2024-06-03 18:44:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:39,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:40,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:40,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047881708] [2024-06-03 18:44:40,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047881708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:40,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:40,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446686290] [2024-06-03 18:44:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:40,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:41,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:41,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 419 transitions, 4587 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:41,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:41,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:41,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:41,894 INFO L124 PetriNetUnfolderBase]: 1238/2228 cut-off events. [2024-06-03 18:44:41,895 INFO L125 PetriNetUnfolderBase]: For 156569/156569 co-relation queries the response was YES. [2024-06-03 18:44:41,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12506 conditions, 2228 events. 1238/2228 cut-off events. For 156569/156569 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13722 event pairs, 234 based on Foata normal form. 2/2230 useless extension candidates. Maximal degree in co-relation 12282. Up to 2001 conditions per place. [2024-06-03 18:44:41,928 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 399 selfloop transitions, 43 changer transitions 0/444 dead transitions. [2024-06-03 18:44:41,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 444 transitions, 5571 flow [2024-06-03 18:44:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:44:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:44:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2024-06-03 18:44:41,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30536130536130535 [2024-06-03 18:44:41,929 INFO L175 Difference]: Start difference. First operand has 499 places, 419 transitions, 4587 flow. Second operand 13 states and 131 transitions. [2024-06-03 18:44:41,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 444 transitions, 5571 flow [2024-06-03 18:44:43,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 444 transitions, 5463 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-03 18:44:43,054 INFO L231 Difference]: Finished difference. Result has 501 places, 420 transitions, 4613 flow [2024-06-03 18:44:43,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4479, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4613, PETRI_PLACES=501, PETRI_TRANSITIONS=420} [2024-06-03 18:44:43,055 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-03 18:44:43,055 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 420 transitions, 4613 flow [2024-06-03 18:44:43,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:43,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:43,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:43,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-03 18:44:43,055 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:43,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1691588497, now seen corresponding path program 1 times [2024-06-03 18:44:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:43,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721103755] [2024-06-03 18:44:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:43,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:45,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:45,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721103755] [2024-06-03 18:44:45,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721103755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:45,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:45,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:45,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458155481] [2024-06-03 18:44:45,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:45,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:45,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:45,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:45,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:45,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:45,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 420 transitions, 4613 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:45,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:45,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:45,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:46,372 INFO L124 PetriNetUnfolderBase]: 1241/2233 cut-off events. [2024-06-03 18:44:46,372 INFO L125 PetriNetUnfolderBase]: For 149537/149537 co-relation queries the response was YES. [2024-06-03 18:44:46,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12557 conditions, 2233 events. 1241/2233 cut-off events. For 149537/149537 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13738 event pairs, 282 based on Foata normal form. 1/2234 useless extension candidates. Maximal degree in co-relation 12332. Up to 2093 conditions per place. [2024-06-03 18:44:46,408 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 397 selfloop transitions, 46 changer transitions 0/445 dead transitions. [2024-06-03 18:44:46,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 445 transitions, 5633 flow [2024-06-03 18:44:46,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:44:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:44:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-03 18:44:46,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31934731934731936 [2024-06-03 18:44:46,409 INFO L175 Difference]: Start difference. First operand has 501 places, 420 transitions, 4613 flow. Second operand 13 states and 137 transitions. [2024-06-03 18:44:46,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 445 transitions, 5633 flow [2024-06-03 18:44:47,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 445 transitions, 5509 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-03 18:44:47,463 INFO L231 Difference]: Finished difference. Result has 503 places, 422 transitions, 4661 flow [2024-06-03 18:44:47,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4489, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4661, PETRI_PLACES=503, PETRI_TRANSITIONS=422} [2024-06-03 18:44:47,464 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-03 18:44:47,464 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 422 transitions, 4661 flow [2024-06-03 18:44:47,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:47,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:47,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:47,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-03 18:44:47,464 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:47,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1491718574, now seen corresponding path program 1 times [2024-06-03 18:44:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:47,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871305449] [2024-06-03 18:44:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:49,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:49,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871305449] [2024-06-03 18:44:49,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871305449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:49,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:49,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515511080] [2024-06-03 18:44:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:49,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:49,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:49,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 422 transitions, 4661 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:49,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:49,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:49,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:50,592 INFO L124 PetriNetUnfolderBase]: 1261/2277 cut-off events. [2024-06-03 18:44:50,593 INFO L125 PetriNetUnfolderBase]: For 233486/233486 co-relation queries the response was YES. [2024-06-03 18:44:50,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12688 conditions, 2277 events. 1261/2277 cut-off events. For 233486/233486 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 14103 event pairs, 291 based on Foata normal form. 10/2287 useless extension candidates. Maximal degree in co-relation 12462. Up to 2100 conditions per place. [2024-06-03 18:44:50,627 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 402 selfloop transitions, 32 changer transitions 16/452 dead transitions. [2024-06-03 18:44:50,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 452 transitions, 5689 flow [2024-06-03 18:44:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-03 18:44:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-03 18:44:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 149 transitions. [2024-06-03 18:44:50,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225108225108225 [2024-06-03 18:44:50,628 INFO L175 Difference]: Start difference. First operand has 503 places, 422 transitions, 4661 flow. Second operand 14 states and 149 transitions. [2024-06-03 18:44:50,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 452 transitions, 5689 flow [2024-06-03 18:44:51,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 452 transitions, 5559 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-03 18:44:51,779 INFO L231 Difference]: Finished difference. Result has 506 places, 417 transitions, 4511 flow [2024-06-03 18:44:51,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4531, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4511, PETRI_PLACES=506, PETRI_TRANSITIONS=417} [2024-06-03 18:44:51,779 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-03 18:44:51,780 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 417 transitions, 4511 flow [2024-06-03 18:44:51,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:51,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:51,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:51,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-03 18:44:51,780 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:51,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1278390442, now seen corresponding path program 7 times [2024-06-03 18:44:51,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:51,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115439057] [2024-06-03 18:44:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:53,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:53,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115439057] [2024-06-03 18:44:53,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115439057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:53,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:53,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:53,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865250639] [2024-06-03 18:44:53,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:53,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:53,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:53,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:53,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 417 transitions, 4511 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:53,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:53,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:53,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:54,495 INFO L124 PetriNetUnfolderBase]: 1229/2217 cut-off events. [2024-06-03 18:44:54,495 INFO L125 PetriNetUnfolderBase]: For 162714/162714 co-relation queries the response was YES. [2024-06-03 18:44:54,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12371 conditions, 2217 events. 1229/2217 cut-off events. For 162714/162714 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13646 event pairs, 251 based on Foata normal form. 2/2219 useless extension candidates. Maximal degree in co-relation 12144. Up to 2092 conditions per place. [2024-06-03 18:44:54,523 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 401 selfloop transitions, 37 changer transitions 0/440 dead transitions. [2024-06-03 18:44:54,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 440 transitions, 5495 flow [2024-06-03 18:44:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:44:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:44:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-03 18:44:54,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-03 18:44:54,523 INFO L175 Difference]: Start difference. First operand has 506 places, 417 transitions, 4511 flow. Second operand 12 states and 129 transitions. [2024-06-03 18:44:54,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 440 transitions, 5495 flow [2024-06-03 18:44:55,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 440 transitions, 5409 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-03 18:44:55,596 INFO L231 Difference]: Finished difference. Result has 502 places, 418 transitions, 4550 flow [2024-06-03 18:44:55,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4425, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4550, PETRI_PLACES=502, PETRI_TRANSITIONS=418} [2024-06-03 18:44:55,596 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-03 18:44:55,596 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 418 transitions, 4550 flow [2024-06-03 18:44:55,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:55,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:55,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:55,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-03 18:44:55,597 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:55,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1287535100, now seen corresponding path program 8 times [2024-06-03 18:44:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:55,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730390373] [2024-06-03 18:44:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:44:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:44:57,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:44:57,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730390373] [2024-06-03 18:44:57,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730390373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:44:57,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:44:57,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:44:57,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795761636] [2024-06-03 18:44:57,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:44:57,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:44:57,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:44:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:44:57,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:44:57,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:44:57,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 418 transitions, 4550 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:57,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:44:57,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:44:57,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:44:58,674 INFO L124 PetriNetUnfolderBase]: 1233/2225 cut-off events. [2024-06-03 18:44:58,674 INFO L125 PetriNetUnfolderBase]: For 164172/164172 co-relation queries the response was YES. [2024-06-03 18:44:58,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12470 conditions, 2225 events. 1233/2225 cut-off events. For 164172/164172 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13707 event pairs, 251 based on Foata normal form. 2/2227 useless extension candidates. Maximal degree in co-relation 12243. Up to 2103 conditions per place. [2024-06-03 18:44:58,725 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 405 selfloop transitions, 34 changer transitions 0/441 dead transitions. [2024-06-03 18:44:58,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 441 transitions, 5536 flow [2024-06-03 18:44:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:44:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:44:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-03 18:44:58,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-03 18:44:58,727 INFO L175 Difference]: Start difference. First operand has 502 places, 418 transitions, 4550 flow. Second operand 12 states and 128 transitions. [2024-06-03 18:44:58,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 441 transitions, 5536 flow [2024-06-03 18:44:59,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 441 transitions, 5401 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-06-03 18:44:59,861 INFO L231 Difference]: Finished difference. Result has 502 places, 419 transitions, 4535 flow [2024-06-03 18:44:59,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4535, PETRI_PLACES=502, PETRI_TRANSITIONS=419} [2024-06-03 18:44:59,861 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-03 18:44:59,861 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 419 transitions, 4535 flow [2024-06-03 18:44:59,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:44:59,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:44:59,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:44:59,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-03 18:44:59,862 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:44:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:44:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1278240712, now seen corresponding path program 9 times [2024-06-03 18:44:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:44:59,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966244661] [2024-06-03 18:44:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:44:59,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:44:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:01,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:01,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966244661] [2024-06-03 18:45:01,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966244661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:01,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:01,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819748481] [2024-06-03 18:45:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:01,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:01,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:01,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 419 transitions, 4535 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:01,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:01,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:01,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:02,683 INFO L124 PetriNetUnfolderBase]: 1237/2233 cut-off events. [2024-06-03 18:45:02,683 INFO L125 PetriNetUnfolderBase]: For 161690/161690 co-relation queries the response was YES. [2024-06-03 18:45:02,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12449 conditions, 2233 events. 1237/2233 cut-off events. For 161690/161690 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13776 event pairs, 251 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 12223. Up to 2114 conditions per place. [2024-06-03 18:45:02,719 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 409 selfloop transitions, 31 changer transitions 0/442 dead transitions. [2024-06-03 18:45:02,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 442 transitions, 5521 flow [2024-06-03 18:45:02,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:45:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:45:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-03 18:45:02,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-03 18:45:02,720 INFO L175 Difference]: Start difference. First operand has 502 places, 419 transitions, 4535 flow. Second operand 12 states and 127 transitions. [2024-06-03 18:45:02,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 442 transitions, 5521 flow [2024-06-03 18:45:03,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 442 transitions, 5413 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-03 18:45:03,767 INFO L231 Difference]: Finished difference. Result has 504 places, 420 transitions, 4541 flow [2024-06-03 18:45:03,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4541, PETRI_PLACES=504, PETRI_TRANSITIONS=420} [2024-06-03 18:45:03,768 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-03 18:45:03,768 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 420 transitions, 4541 flow [2024-06-03 18:45:03,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:03,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:03,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:03,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-03 18:45:03,769 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:03,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:03,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2031435240, now seen corresponding path program 10 times [2024-06-03 18:45:03,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:03,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145407771] [2024-06-03 18:45:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:03,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145407771] [2024-06-03 18:45:05,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145407771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:05,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:05,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694585807] [2024-06-03 18:45:05,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:05,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:05,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:05,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 420 transitions, 4541 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:05,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:05,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:05,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:06,584 INFO L124 PetriNetUnfolderBase]: 1241/2241 cut-off events. [2024-06-03 18:45:06,584 INFO L125 PetriNetUnfolderBase]: For 164176/164176 co-relation queries the response was YES. [2024-06-03 18:45:06,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 2241 events. 1241/2241 cut-off events. For 164176/164176 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 13870 event pairs, 251 based on Foata normal form. 2/2243 useless extension candidates. Maximal degree in co-relation 12269. Up to 2125 conditions per place. [2024-06-03 18:45:06,613 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 413 selfloop transitions, 28 changer transitions 0/443 dead transitions. [2024-06-03 18:45:06,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 443 transitions, 5529 flow [2024-06-03 18:45:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:45:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:45:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-03 18:45:06,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-03 18:45:06,614 INFO L175 Difference]: Start difference. First operand has 504 places, 420 transitions, 4541 flow. Second operand 12 states and 126 transitions. [2024-06-03 18:45:06,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 443 transitions, 5529 flow [2024-06-03 18:45:07,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 443 transitions, 5425 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-03 18:45:07,695 INFO L231 Difference]: Finished difference. Result has 506 places, 421 transitions, 4547 flow [2024-06-03 18:45:07,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4547, PETRI_PLACES=506, PETRI_TRANSITIONS=421} [2024-06-03 18:45:07,695 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-03 18:45:07,695 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 421 transitions, 4547 flow [2024-06-03 18:45:07,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:07,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:07,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:07,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-03 18:45:07,696 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:07,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1202847176, now seen corresponding path program 11 times [2024-06-03 18:45:07,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:07,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737460936] [2024-06-03 18:45:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:07,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:09,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:09,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737460936] [2024-06-03 18:45:09,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737460936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:09,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:09,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:09,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291462777] [2024-06-03 18:45:09,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:09,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:09,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:09,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:09,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:09,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 421 transitions, 4547 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:09,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:09,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:09,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:10,416 INFO L124 PetriNetUnfolderBase]: 1245/2249 cut-off events. [2024-06-03 18:45:10,416 INFO L125 PetriNetUnfolderBase]: For 166713/166713 co-relation queries the response was YES. [2024-06-03 18:45:10,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12543 conditions, 2249 events. 1245/2249 cut-off events. For 166713/166713 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13924 event pairs, 247 based on Foata normal form. 2/2251 useless extension candidates. Maximal degree in co-relation 12315. Up to 2115 conditions per place. [2024-06-03 18:45:10,450 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 415 selfloop transitions, 30 changer transitions 0/447 dead transitions. [2024-06-03 18:45:10,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 447 transitions, 5553 flow [2024-06-03 18:45:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:45:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:45:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-06-03 18:45:10,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.317016317016317 [2024-06-03 18:45:10,452 INFO L175 Difference]: Start difference. First operand has 506 places, 421 transitions, 4547 flow. Second operand 13 states and 136 transitions. [2024-06-03 18:45:10,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 447 transitions, 5553 flow [2024-06-03 18:45:11,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 447 transitions, 5453 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-03 18:45:11,598 INFO L231 Difference]: Finished difference. Result has 509 places, 422 transitions, 4563 flow [2024-06-03 18:45:11,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4447, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4563, PETRI_PLACES=509, PETRI_TRANSITIONS=422} [2024-06-03 18:45:11,599 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-03 18:45:11,599 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 422 transitions, 4563 flow [2024-06-03 18:45:11,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:11,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:11,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:11,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-03 18:45:11,599 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:11,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash 418921483, now seen corresponding path program 2 times [2024-06-03 18:45:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:11,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088670684] [2024-06-03 18:45:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:11,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:13,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:13,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088670684] [2024-06-03 18:45:13,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088670684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:13,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:13,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808106462] [2024-06-03 18:45:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:13,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:13,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:13,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:13,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 422 transitions, 4563 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:13,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:13,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:13,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:14,740 INFO L124 PetriNetUnfolderBase]: 1243/2246 cut-off events. [2024-06-03 18:45:14,740 INFO L125 PetriNetUnfolderBase]: For 147987/147987 co-relation queries the response was YES. [2024-06-03 18:45:14,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12311 conditions, 2246 events. 1243/2246 cut-off events. For 147987/147987 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13883 event pairs, 257 based on Foata normal form. 1/2247 useless extension candidates. Maximal degree in co-relation 12082. Up to 2118 conditions per place. [2024-06-03 18:45:14,775 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 402 selfloop transitions, 40 changer transitions 0/444 dead transitions. [2024-06-03 18:45:14,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 444 transitions, 5513 flow [2024-06-03 18:45:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:45:14,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:45:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-03 18:45:14,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-03 18:45:14,776 INFO L175 Difference]: Start difference. First operand has 509 places, 422 transitions, 4563 flow. Second operand 12 states and 130 transitions. [2024-06-03 18:45:14,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 444 transitions, 5513 flow [2024-06-03 18:45:15,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 444 transitions, 5387 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-03 18:45:15,971 INFO L231 Difference]: Finished difference. Result has 510 places, 422 transitions, 4525 flow [2024-06-03 18:45:15,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4525, PETRI_PLACES=510, PETRI_TRANSITIONS=422} [2024-06-03 18:45:15,971 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-03 18:45:15,971 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 422 transitions, 4525 flow [2024-06-03 18:45:15,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:15,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:15,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:15,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-03 18:45:15,972 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:15,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash 563021542, now seen corresponding path program 2 times [2024-06-03 18:45:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:15,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149768155] [2024-06-03 18:45:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:15,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:17,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:17,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149768155] [2024-06-03 18:45:17,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149768155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:17,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:17,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:17,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025505161] [2024-06-03 18:45:17,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:17,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:17,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:17,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:18,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:18,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 422 transitions, 4525 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:18,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:18,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:18,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:19,085 INFO L124 PetriNetUnfolderBase]: 1259/2282 cut-off events. [2024-06-03 18:45:19,085 INFO L125 PetriNetUnfolderBase]: For 237248/237248 co-relation queries the response was YES. [2024-06-03 18:45:19,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12399 conditions, 2282 events. 1259/2282 cut-off events. For 237248/237248 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14146 event pairs, 261 based on Foata normal form. 10/2292 useless extension candidates. Maximal degree in co-relation 12169. Up to 2127 conditions per place. [2024-06-03 18:45:19,115 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 409 selfloop transitions, 28 changer transitions 11/450 dead transitions. [2024-06-03 18:45:19,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 450 transitions, 5543 flow [2024-06-03 18:45:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:45:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:45:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 141 transitions. [2024-06-03 18:45:19,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32867132867132864 [2024-06-03 18:45:19,116 INFO L175 Difference]: Start difference. First operand has 510 places, 422 transitions, 4525 flow. Second operand 13 states and 141 transitions. [2024-06-03 18:45:19,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 450 transitions, 5543 flow [2024-06-03 18:45:20,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 450 transitions, 5378 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-03 18:45:20,321 INFO L231 Difference]: Finished difference. Result has 511 places, 419 transitions, 4372 flow [2024-06-03 18:45:20,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4372, PETRI_PLACES=511, PETRI_TRANSITIONS=419} [2024-06-03 18:45:20,322 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-03 18:45:20,322 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 419 transitions, 4372 flow [2024-06-03 18:45:20,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:20,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:20,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:20,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-03 18:45:20,322 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:20,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:20,322 INFO L85 PathProgramCache]: Analyzing trace with hash -369937158, now seen corresponding path program 12 times [2024-06-03 18:45:20,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:20,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605315429] [2024-06-03 18:45:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:20,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:22,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:22,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605315429] [2024-06-03 18:45:22,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605315429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:22,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:22,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:22,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614113766] [2024-06-03 18:45:22,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:22,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:22,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:22,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:22,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:22,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 419 transitions, 4372 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:22,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:22,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:22,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:23,336 INFO L124 PetriNetUnfolderBase]: 1237/2240 cut-off events. [2024-06-03 18:45:23,336 INFO L125 PetriNetUnfolderBase]: For 161837/161837 co-relation queries the response was YES. [2024-06-03 18:45:23,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12171 conditions, 2240 events. 1237/2240 cut-off events. For 161837/161837 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 13875 event pairs, 240 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 11940. Up to 2059 conditions per place. [2024-06-03 18:45:23,372 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 387 selfloop transitions, 52 changer transitions 0/441 dead transitions. [2024-06-03 18:45:23,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 441 transitions, 5362 flow [2024-06-03 18:45:23,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:45:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:45:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 18:45:23,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:45:23,373 INFO L175 Difference]: Start difference. First operand has 511 places, 419 transitions, 4372 flow. Second operand 12 states and 132 transitions. [2024-06-03 18:45:23,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 441 transitions, 5362 flow [2024-06-03 18:45:24,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 441 transitions, 5281 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-03 18:45:24,472 INFO L231 Difference]: Finished difference. Result has 508 places, 420 transitions, 4453 flow [2024-06-03 18:45:24,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4291, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4453, PETRI_PLACES=508, PETRI_TRANSITIONS=420} [2024-06-03 18:45:24,473 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-03 18:45:24,473 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 420 transitions, 4453 flow [2024-06-03 18:45:24,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:24,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:24,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:24,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-03 18:45:24,473 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:24,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:24,473 INFO L85 PathProgramCache]: Analyzing trace with hash -369942738, now seen corresponding path program 13 times [2024-06-03 18:45:24,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:24,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197712783] [2024-06-03 18:45:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:24,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:26,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:26,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197712783] [2024-06-03 18:45:26,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197712783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:26,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:26,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:26,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870456682] [2024-06-03 18:45:26,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:26,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:26,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:26,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 420 transitions, 4453 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:26,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:26,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:26,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:27,103 INFO L124 PetriNetUnfolderBase]: 1241/2248 cut-off events. [2024-06-03 18:45:27,103 INFO L125 PetriNetUnfolderBase]: For 159118/159118 co-relation queries the response was YES. [2024-06-03 18:45:27,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12305 conditions, 2248 events. 1241/2248 cut-off events. For 159118/159118 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13928 event pairs, 238 based on Foata normal form. 2/2250 useless extension candidates. Maximal degree in co-relation 12075. Up to 2053 conditions per place. [2024-06-03 18:45:27,137 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 387 selfloop transitions, 53 changer transitions 0/442 dead transitions. [2024-06-03 18:45:27,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 442 transitions, 5445 flow [2024-06-03 18:45:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:45:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:45:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 18:45:27,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-03 18:45:27,138 INFO L175 Difference]: Start difference. First operand has 508 places, 420 transitions, 4453 flow. Second operand 12 states and 133 transitions. [2024-06-03 18:45:27,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 442 transitions, 5445 flow [2024-06-03 18:45:28,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 442 transitions, 5280 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-06-03 18:45:28,234 INFO L231 Difference]: Finished difference. Result has 508 places, 421 transitions, 4454 flow [2024-06-03 18:45:28,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4288, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4454, PETRI_PLACES=508, PETRI_TRANSITIONS=421} [2024-06-03 18:45:28,234 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-03 18:45:28,235 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 421 transitions, 4454 flow [2024-06-03 18:45:28,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:28,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:28,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:28,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-03 18:45:28,235 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:28,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash 280439760, now seen corresponding path program 14 times [2024-06-03 18:45:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:28,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385697394] [2024-06-03 18:45:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:30,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385697394] [2024-06-03 18:45:30,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385697394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:30,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:30,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:30,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736180010] [2024-06-03 18:45:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:30,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:30,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:30,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:30,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:30,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 421 transitions, 4454 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:30,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:30,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:30,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:31,220 INFO L124 PetriNetUnfolderBase]: 1245/2256 cut-off events. [2024-06-03 18:45:31,220 INFO L125 PetriNetUnfolderBase]: For 159475/159475 co-relation queries the response was YES. [2024-06-03 18:45:31,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 2256 events. 1245/2256 cut-off events. For 159475/159475 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14009 event pairs, 220 based on Foata normal form. 2/2258 useless extension candidates. Maximal degree in co-relation 12097. Up to 1920 conditions per place. [2024-06-03 18:45:31,253 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 357 selfloop transitions, 89 changer transitions 0/448 dead transitions. [2024-06-03 18:45:31,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 448 transitions, 5484 flow [2024-06-03 18:45:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:45:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:45:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-03 18:45:31,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34265734265734266 [2024-06-03 18:45:31,254 INFO L175 Difference]: Start difference. First operand has 508 places, 421 transitions, 4454 flow. Second operand 13 states and 147 transitions. [2024-06-03 18:45:31,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 448 transitions, 5484 flow [2024-06-03 18:45:32,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 448 transitions, 5328 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-03 18:45:32,353 INFO L231 Difference]: Finished difference. Result has 511 places, 422 transitions, 4538 flow [2024-06-03 18:45:32,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4298, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4538, PETRI_PLACES=511, PETRI_TRANSITIONS=422} [2024-06-03 18:45:32,354 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-03 18:45:32,354 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 422 transitions, 4538 flow [2024-06-03 18:45:32,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:32,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:32,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:32,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-03 18:45:32,354 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:32,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:32,354 INFO L85 PathProgramCache]: Analyzing trace with hash -370086888, now seen corresponding path program 15 times [2024-06-03 18:45:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:32,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198855469] [2024-06-03 18:45:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:32,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198855469] [2024-06-03 18:45:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198855469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:33,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:33,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:33,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967853299] [2024-06-03 18:45:33,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:33,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:34,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:34,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 422 transitions, 4538 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:34,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:34,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:34,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:34,949 INFO L124 PetriNetUnfolderBase]: 1249/2264 cut-off events. [2024-06-03 18:45:34,950 INFO L125 PetriNetUnfolderBase]: For 162162/162162 co-relation queries the response was YES. [2024-06-03 18:45:34,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12468 conditions, 2264 events. 1249/2264 cut-off events. For 162162/162162 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14108 event pairs, 240 based on Foata normal form. 2/2266 useless extension candidates. Maximal degree in co-relation 12238. Up to 2083 conditions per place. [2024-06-03 18:45:34,987 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 392 selfloop transitions, 50 changer transitions 0/444 dead transitions. [2024-06-03 18:45:34,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 444 transitions, 5536 flow [2024-06-03 18:45:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:45:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:45:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-03 18:45:34,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-03 18:45:34,989 INFO L175 Difference]: Start difference. First operand has 511 places, 422 transitions, 4538 flow. Second operand 12 states and 130 transitions. [2024-06-03 18:45:34,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 444 transitions, 5536 flow [2024-06-03 18:45:36,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 444 transitions, 5312 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-03 18:45:36,265 INFO L231 Difference]: Finished difference. Result has 513 places, 423 transitions, 4478 flow [2024-06-03 18:45:36,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4478, PETRI_PLACES=513, PETRI_TRANSITIONS=423} [2024-06-03 18:45:36,265 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-03 18:45:36,265 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 423 transitions, 4478 flow [2024-06-03 18:45:36,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:36,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:36,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:36,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-03 18:45:36,266 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:36,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:36,266 INFO L85 PathProgramCache]: Analyzing trace with hash -919394714, now seen corresponding path program 16 times [2024-06-03 18:45:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:36,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641751344] [2024-06-03 18:45:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:36,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:37,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:37,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641751344] [2024-06-03 18:45:37,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641751344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:37,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:37,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:37,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753450593] [2024-06-03 18:45:37,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:37,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:37,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:37,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:37,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:37,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 423 transitions, 4478 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:37,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:37,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:37,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:38,682 INFO L124 PetriNetUnfolderBase]: 1253/2272 cut-off events. [2024-06-03 18:45:38,682 INFO L125 PetriNetUnfolderBase]: For 164200/164200 co-relation queries the response was YES. [2024-06-03 18:45:38,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12428 conditions, 2272 events. 1253/2272 cut-off events. For 164200/164200 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 14171 event pairs, 240 based on Foata normal form. 2/2274 useless extension candidates. Maximal degree in co-relation 12197. Up to 2091 conditions per place. [2024-06-03 18:45:38,716 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 394 selfloop transitions, 49 changer transitions 0/445 dead transitions. [2024-06-03 18:45:38,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 445 transitions, 5478 flow [2024-06-03 18:45:38,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:45:38,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:45:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-03 18:45:38,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-03 18:45:38,717 INFO L175 Difference]: Start difference. First operand has 513 places, 423 transitions, 4478 flow. Second operand 12 states and 129 transitions. [2024-06-03 18:45:38,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 445 transitions, 5478 flow [2024-06-03 18:45:39,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 445 transitions, 5324 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-03 18:45:39,793 INFO L231 Difference]: Finished difference. Result has 515 places, 424 transitions, 4488 flow [2024-06-03 18:45:39,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4488, PETRI_PLACES=515, PETRI_TRANSITIONS=424} [2024-06-03 18:45:39,794 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-03 18:45:39,794 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 424 transitions, 4488 flow [2024-06-03 18:45:39,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:39,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:39,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:39,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-03 18:45:39,794 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:39,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash 280434180, now seen corresponding path program 17 times [2024-06-03 18:45:39,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:39,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489257091] [2024-06-03 18:45:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:39,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:41,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:41,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489257091] [2024-06-03 18:45:41,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489257091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:41,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:41,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528576631] [2024-06-03 18:45:41,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:41,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:41,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:41,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:41,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:42,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:42,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 424 transitions, 4488 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:42,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:42,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:42,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:43,221 INFO L124 PetriNetUnfolderBase]: 1293/2352 cut-off events. [2024-06-03 18:45:43,221 INFO L125 PetriNetUnfolderBase]: For 291504/291504 co-relation queries the response was YES. [2024-06-03 18:45:43,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14674 conditions, 2352 events. 1293/2352 cut-off events. For 291504/291504 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 14693 event pairs, 242 based on Foata normal form. 2/2354 useless extension candidates. Maximal degree in co-relation 14442. Up to 1875 conditions per place. [2024-06-03 18:45:43,252 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 356 selfloop transitions, 97 changer transitions 0/455 dead transitions. [2024-06-03 18:45:43,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 455 transitions, 5936 flow [2024-06-03 18:45:43,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:45:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:45:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 18:45:43,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-03 18:45:43,253 INFO L175 Difference]: Start difference. First operand has 515 places, 424 transitions, 4488 flow. Second operand 12 states and 145 transitions. [2024-06-03 18:45:43,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 455 transitions, 5936 flow [2024-06-03 18:45:44,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 455 transitions, 5782 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-03 18:45:44,737 INFO L231 Difference]: Finished difference. Result has 517 places, 426 transitions, 4658 flow [2024-06-03 18:45:44,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4658, PETRI_PLACES=517, PETRI_TRANSITIONS=426} [2024-06-03 18:45:44,738 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-03 18:45:44,738 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 426 transitions, 4658 flow [2024-06-03 18:45:44,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:44,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:44,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:44,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-03 18:45:44,738 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:44,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -225836882, now seen corresponding path program 3 times [2024-06-03 18:45:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:44,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325513675] [2024-06-03 18:45:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:46,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:46,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325513675] [2024-06-03 18:45:46,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325513675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:46,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:46,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136075226] [2024-06-03 18:45:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:46,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:46,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:46,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:46,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 426 transitions, 4658 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:46,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:46,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:46,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:47,732 INFO L124 PetriNetUnfolderBase]: 1309/2388 cut-off events. [2024-06-03 18:45:47,732 INFO L125 PetriNetUnfolderBase]: For 376649/376649 co-relation queries the response was YES. [2024-06-03 18:45:47,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14878 conditions, 2388 events. 1309/2388 cut-off events. For 376649/376649 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14946 event pairs, 272 based on Foata normal form. 10/2398 useless extension candidates. Maximal degree in co-relation 14645. Up to 2163 conditions per place. [2024-06-03 18:45:47,767 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 390 selfloop transitions, 50 changer transitions 11/453 dead transitions. [2024-06-03 18:45:47,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 453 transitions, 5678 flow [2024-06-03 18:45:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:45:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:45:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-03 18:45:47,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3356643356643357 [2024-06-03 18:45:47,768 INFO L175 Difference]: Start difference. First operand has 517 places, 426 transitions, 4658 flow. Second operand 13 states and 144 transitions. [2024-06-03 18:45:47,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 453 transitions, 5678 flow [2024-06-03 18:45:49,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 453 transitions, 5492 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-03 18:45:49,751 INFO L231 Difference]: Finished difference. Result has 522 places, 423 transitions, 4538 flow [2024-06-03 18:45:49,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4472, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4538, PETRI_PLACES=522, PETRI_TRANSITIONS=423} [2024-06-03 18:45:49,751 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 490 predicate places. [2024-06-03 18:45:49,751 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 423 transitions, 4538 flow [2024-06-03 18:45:49,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:49,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:49,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:49,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-03 18:45:49,752 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:49,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:49,752 INFO L85 PathProgramCache]: Analyzing trace with hash 833524316, now seen corresponding path program 18 times [2024-06-03 18:45:49,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:49,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626706800] [2024-06-03 18:45:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:49,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:51,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:51,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626706800] [2024-06-03 18:45:51,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626706800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:51,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:51,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:51,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723722925] [2024-06-03 18:45:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:51,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:51,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:51,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:51,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:51,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 423 transitions, 4538 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:51,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:51,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:51,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:52,675 INFO L124 PetriNetUnfolderBase]: 1304/2389 cut-off events. [2024-06-03 18:45:52,675 INFO L125 PetriNetUnfolderBase]: For 440488/440488 co-relation queries the response was YES. [2024-06-03 18:45:52,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14426 conditions, 2389 events. 1304/2389 cut-off events. For 440488/440488 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 14987 event pairs, 255 based on Foata normal form. 18/2407 useless extension candidates. Maximal degree in co-relation 14191. Up to 1995 conditions per place. [2024-06-03 18:45:52,705 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 351 selfloop transitions, 84 changer transitions 17/454 dead transitions. [2024-06-03 18:45:52,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 454 transitions, 5582 flow [2024-06-03 18:45:52,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:45:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:45:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-03 18:45:52,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-03 18:45:52,706 INFO L175 Difference]: Start difference. First operand has 522 places, 423 transitions, 4538 flow. Second operand 13 states and 151 transitions. [2024-06-03 18:45:52,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 454 transitions, 5582 flow [2024-06-03 18:45:54,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 454 transitions, 5476 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 18:45:54,634 INFO L231 Difference]: Finished difference. Result has 521 places, 416 transitions, 4463 flow [2024-06-03 18:45:54,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4432, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4463, PETRI_PLACES=521, PETRI_TRANSITIONS=416} [2024-06-03 18:45:54,634 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 489 predicate places. [2024-06-03 18:45:54,634 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 416 transitions, 4463 flow [2024-06-03 18:45:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:54,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:54,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:54,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-03 18:45:54,634 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:54,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash 826382412, now seen corresponding path program 4 times [2024-06-03 18:45:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:54,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586963946] [2024-06-03 18:45:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:54,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:45:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:45:56,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:45:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586963946] [2024-06-03 18:45:56,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586963946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:45:56,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:45:56,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:45:56,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371424977] [2024-06-03 18:45:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:45:56,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:45:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:45:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:45:56,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:45:56,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:45:56,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 416 transitions, 4463 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:56,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:45:56,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:45:56,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:45:57,391 INFO L124 PetriNetUnfolderBase]: 1276/2337 cut-off events. [2024-06-03 18:45:57,391 INFO L125 PetriNetUnfolderBase]: For 355940/355940 co-relation queries the response was YES. [2024-06-03 18:45:57,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14160 conditions, 2337 events. 1276/2337 cut-off events. For 355940/355940 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14617 event pairs, 249 based on Foata normal form. 10/2347 useless extension candidates. Maximal degree in co-relation 13925. Up to 2016 conditions per place. [2024-06-03 18:45:57,427 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 359 selfloop transitions, 76 changer transitions 9/446 dead transitions. [2024-06-03 18:45:57,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 446 transitions, 5485 flow [2024-06-03 18:45:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:45:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:45:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-03 18:45:57,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3473193473193473 [2024-06-03 18:45:57,428 INFO L175 Difference]: Start difference. First operand has 521 places, 416 transitions, 4463 flow. Second operand 13 states and 149 transitions. [2024-06-03 18:45:57,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 446 transitions, 5485 flow [2024-06-03 18:45:58,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 446 transitions, 5289 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-03 18:45:58,975 INFO L231 Difference]: Finished difference. Result has 517 places, 413 transitions, 4390 flow [2024-06-03 18:45:58,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4390, PETRI_PLACES=517, PETRI_TRANSITIONS=413} [2024-06-03 18:45:58,975 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-03 18:45:58,975 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 413 transitions, 4390 flow [2024-06-03 18:45:58,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:45:58,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:45:58,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:45:58,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-03 18:45:58,976 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:45:58,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:45:58,976 INFO L85 PathProgramCache]: Analyzing trace with hash 833791722, now seen corresponding path program 5 times [2024-06-03 18:45:58,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:45:58,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40704685] [2024-06-03 18:45:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:45:58,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:45:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:00,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:00,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40704685] [2024-06-03 18:46:00,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40704685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:00,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:00,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922252812] [2024-06-03 18:46:00,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:00,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:00,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:00,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:01,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:01,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 413 transitions, 4390 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:01,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:01,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:01,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:02,180 INFO L124 PetriNetUnfolderBase]: 1237/2264 cut-off events. [2024-06-03 18:46:02,180 INFO L125 PetriNetUnfolderBase]: For 248163/248163 co-relation queries the response was YES. [2024-06-03 18:46:02,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12288 conditions, 2264 events. 1237/2264 cut-off events. For 248163/248163 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14144 event pairs, 230 based on Foata normal form. 10/2274 useless extension candidates. Maximal degree in co-relation 12054. Up to 1883 conditions per place. [2024-06-03 18:46:02,208 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 342 selfloop transitions, 86 changer transitions 12/442 dead transitions. [2024-06-03 18:46:02,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 442 transitions, 5404 flow [2024-06-03 18:46:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:46:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:46:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-03 18:46:02,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-03 18:46:02,209 INFO L175 Difference]: Start difference. First operand has 517 places, 413 transitions, 4390 flow. Second operand 12 states and 142 transitions. [2024-06-03 18:46:02,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 442 transitions, 5404 flow [2024-06-03 18:46:03,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 442 transitions, 5240 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-03 18:46:03,268 INFO L231 Difference]: Finished difference. Result has 514 places, 409 transitions, 4350 flow [2024-06-03 18:46:03,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4350, PETRI_PLACES=514, PETRI_TRANSITIONS=409} [2024-06-03 18:46:03,268 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-03 18:46:03,268 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 409 transitions, 4350 flow [2024-06-03 18:46:03,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:03,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:03,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:03,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-03 18:46:03,269 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:03,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:03,269 INFO L85 PathProgramCache]: Analyzing trace with hash 833801022, now seen corresponding path program 6 times [2024-06-03 18:46:03,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:03,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042624723] [2024-06-03 18:46:03,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:03,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042624723] [2024-06-03 18:46:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042624723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:05,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:05,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:05,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992656471] [2024-06-03 18:46:05,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:05,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:05,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:05,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:05,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 409 transitions, 4350 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:05,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:05,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:05,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:06,409 INFO L124 PetriNetUnfolderBase]: 1259/2314 cut-off events. [2024-06-03 18:46:06,409 INFO L125 PetriNetUnfolderBase]: For 352345/352345 co-relation queries the response was YES. [2024-06-03 18:46:06,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14366 conditions, 2314 events. 1259/2314 cut-off events. For 352345/352345 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 14485 event pairs, 240 based on Foata normal form. 8/2322 useless extension candidates. Maximal degree in co-relation 14133. Up to 1817 conditions per place. [2024-06-03 18:46:06,443 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 340 selfloop transitions, 87 changer transitions 15/444 dead transitions. [2024-06-03 18:46:06,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 444 transitions, 5768 flow [2024-06-03 18:46:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:46:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:46:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-03 18:46:06,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-03 18:46:06,444 INFO L175 Difference]: Start difference. First operand has 514 places, 409 transitions, 4350 flow. Second operand 12 states and 146 transitions. [2024-06-03 18:46:06,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 444 transitions, 5768 flow [2024-06-03 18:46:08,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 444 transitions, 5588 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 18:46:08,023 INFO L231 Difference]: Finished difference. Result has 514 places, 402 transitions, 4308 flow [2024-06-03 18:46:08,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4308, PETRI_PLACES=514, PETRI_TRANSITIONS=402} [2024-06-03 18:46:08,024 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-03 18:46:08,024 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 402 transitions, 4308 flow [2024-06-03 18:46:08,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:08,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:08,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:08,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-03 18:46:08,024 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:08,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:08,025 INFO L85 PathProgramCache]: Analyzing trace with hash 626870876, now seen corresponding path program 19 times [2024-06-03 18:46:08,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:08,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713778914] [2024-06-03 18:46:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:08,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:09,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:09,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713778914] [2024-06-03 18:46:09,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713778914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:09,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:09,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:09,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121272558] [2024-06-03 18:46:09,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:09,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:09,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:09,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:09,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:10,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:10,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 402 transitions, 4308 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:10,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:10,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:10,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:10,878 INFO L124 PetriNetUnfolderBase]: 1216/2229 cut-off events. [2024-06-03 18:46:10,879 INFO L125 PetriNetUnfolderBase]: For 271189/271189 co-relation queries the response was YES. [2024-06-03 18:46:10,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13589 conditions, 2229 events. 1216/2229 cut-off events. For 271189/271189 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13825 event pairs, 241 based on Foata normal form. 2/2231 useless extension candidates. Maximal degree in co-relation 13371. Up to 2007 conditions per place. [2024-06-03 18:46:11,006 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 359 selfloop transitions, 64 changer transitions 0/425 dead transitions. [2024-06-03 18:46:11,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 425 transitions, 5224 flow [2024-06-03 18:46:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:46:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:46:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-03 18:46:11,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-06-03 18:46:11,007 INFO L175 Difference]: Start difference. First operand has 514 places, 402 transitions, 4308 flow. Second operand 12 states and 134 transitions. [2024-06-03 18:46:11,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 425 transitions, 5224 flow [2024-06-03 18:46:12,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 425 transitions, 5018 flow, removed 13 selfloop flow, removed 15 redundant places. [2024-06-03 18:46:12,514 INFO L231 Difference]: Finished difference. Result has 504 places, 402 transitions, 4234 flow [2024-06-03 18:46:12,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4102, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4234, PETRI_PLACES=504, PETRI_TRANSITIONS=402} [2024-06-03 18:46:12,515 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-03 18:46:12,515 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 402 transitions, 4234 flow [2024-06-03 18:46:12,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:12,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:12,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:12,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-03 18:46:12,515 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:12,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:12,516 INFO L85 PathProgramCache]: Analyzing trace with hash 626865296, now seen corresponding path program 20 times [2024-06-03 18:46:12,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:12,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987665370] [2024-06-03 18:46:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:12,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:14,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:14,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987665370] [2024-06-03 18:46:14,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987665370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:14,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:14,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:14,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022382996] [2024-06-03 18:46:14,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:14,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:14,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:14,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:14,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:14,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:14,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 402 transitions, 4234 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:14,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:14,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:14,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:15,307 INFO L124 PetriNetUnfolderBase]: 1220/2237 cut-off events. [2024-06-03 18:46:15,307 INFO L125 PetriNetUnfolderBase]: For 261915/261915 co-relation queries the response was YES. [2024-06-03 18:46:15,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13564 conditions, 2237 events. 1220/2237 cut-off events. For 261915/261915 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 13883 event pairs, 241 based on Foata normal form. 2/2239 useless extension candidates. Maximal degree in co-relation 13351. Up to 2015 conditions per place. [2024-06-03 18:46:15,342 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 361 selfloop transitions, 63 changer transitions 0/426 dead transitions. [2024-06-03 18:46:15,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 426 transitions, 5212 flow [2024-06-03 18:46:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:46:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:46:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 18:46:15,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-03 18:46:15,343 INFO L175 Difference]: Start difference. First operand has 504 places, 402 transitions, 4234 flow. Second operand 12 states and 133 transitions. [2024-06-03 18:46:15,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 426 transitions, 5212 flow [2024-06-03 18:46:17,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 426 transitions, 5011 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-03 18:46:17,024 INFO L231 Difference]: Finished difference. Result has 505 places, 403 transitions, 4227 flow [2024-06-03 18:46:17,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4033, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4227, PETRI_PLACES=505, PETRI_TRANSITIONS=403} [2024-06-03 18:46:17,024 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-03 18:46:17,024 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 403 transitions, 4227 flow [2024-06-03 18:46:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:17,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:17,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-03 18:46:17,025 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:17,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash 626721146, now seen corresponding path program 21 times [2024-06-03 18:46:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:17,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358216938] [2024-06-03 18:46:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:18,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:18,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358216938] [2024-06-03 18:46:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358216938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964552644] [2024-06-03 18:46:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:18,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:18,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:18,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:18,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 403 transitions, 4227 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:18,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:18,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:18,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:19,672 INFO L124 PetriNetUnfolderBase]: 1224/2245 cut-off events. [2024-06-03 18:46:19,673 INFO L125 PetriNetUnfolderBase]: For 265558/265558 co-relation queries the response was YES. [2024-06-03 18:46:19,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13596 conditions, 2245 events. 1224/2245 cut-off events. For 265558/265558 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13932 event pairs, 239 based on Foata normal form. 2/2247 useless extension candidates. Maximal degree in co-relation 13382. Up to 2023 conditions per place. [2024-06-03 18:46:19,707 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 363 selfloop transitions, 62 changer transitions 0/427 dead transitions. [2024-06-03 18:46:19,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 427 transitions, 5207 flow [2024-06-03 18:46:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:46:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:46:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 18:46:19,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:46:19,708 INFO L175 Difference]: Start difference. First operand has 505 places, 403 transitions, 4227 flow. Second operand 12 states and 132 transitions. [2024-06-03 18:46:19,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 427 transitions, 5207 flow [2024-06-03 18:46:21,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 427 transitions, 5023 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-03 18:46:21,416 INFO L231 Difference]: Finished difference. Result has 507 places, 404 transitions, 4237 flow [2024-06-03 18:46:21,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4043, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4237, PETRI_PLACES=507, PETRI_TRANSITIONS=404} [2024-06-03 18:46:21,416 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-03 18:46:21,416 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 404 transitions, 4237 flow [2024-06-03 18:46:21,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:21,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:21,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:21,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-03 18:46:21,417 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:21,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash 632443002, now seen corresponding path program 7 times [2024-06-03 18:46:21,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:21,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760935524] [2024-06-03 18:46:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:21,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:23,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:23,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760935524] [2024-06-03 18:46:23,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760935524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:23,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:23,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:23,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108924942] [2024-06-03 18:46:23,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:23,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:23,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:23,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:23,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:23,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:23,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 404 transitions, 4237 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:23,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:23,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:23,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:24,493 INFO L124 PetriNetUnfolderBase]: 1241/2288 cut-off events. [2024-06-03 18:46:24,493 INFO L125 PetriNetUnfolderBase]: For 391105/391105 co-relation queries the response was YES. [2024-06-03 18:46:24,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13410 conditions, 2288 events. 1241/2288 cut-off events. For 391105/391105 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14269 event pairs, 252 based on Foata normal form. 16/2304 useless extension candidates. Maximal degree in co-relation 13195. Up to 1992 conditions per place. [2024-06-03 18:46:24,526 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 355 selfloop transitions, 60 changer transitions 16/433 dead transitions. [2024-06-03 18:46:24,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 433 transitions, 5227 flow [2024-06-03 18:46:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 18:46:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 18:46:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-03 18:46:24,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34265734265734266 [2024-06-03 18:46:24,527 INFO L175 Difference]: Start difference. First operand has 507 places, 404 transitions, 4237 flow. Second operand 13 states and 147 transitions. [2024-06-03 18:46:24,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 433 transitions, 5227 flow [2024-06-03 18:46:26,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 433 transitions, 5043 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-03 18:46:26,090 INFO L231 Difference]: Finished difference. Result has 510 places, 398 transitions, 4107 flow [2024-06-03 18:46:26,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4107, PETRI_PLACES=510, PETRI_TRANSITIONS=398} [2024-06-03 18:46:26,091 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-03 18:46:26,091 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 398 transitions, 4107 flow [2024-06-03 18:46:26,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:26,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:26,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:26,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-03 18:46:26,091 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:26,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash -879084374, now seen corresponding path program 22 times [2024-06-03 18:46:26,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:26,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210688906] [2024-06-03 18:46:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:27,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210688906] [2024-06-03 18:46:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210688906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:27,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:27,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:27,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264974266] [2024-06-03 18:46:27,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:27,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:27,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:27,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:27,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:27,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:27,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 398 transitions, 4107 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:27,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:27,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:27,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:28,568 INFO L124 PetriNetUnfolderBase]: 1201/2208 cut-off events. [2024-06-03 18:46:28,568 INFO L125 PetriNetUnfolderBase]: For 249915/249915 co-relation queries the response was YES. [2024-06-03 18:46:28,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13056 conditions, 2208 events. 1201/2208 cut-off events. For 249915/249915 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13701 event pairs, 306 based on Foata normal form. 2/2210 useless extension candidates. Maximal degree in co-relation 12840. Up to 1993 conditions per place. [2024-06-03 18:46:28,602 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 350 selfloop transitions, 66 changer transitions 0/418 dead transitions. [2024-06-03 18:46:28,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 418 transitions, 5057 flow [2024-06-03 18:46:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:46:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:46:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 18:46:28,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-03 18:46:28,603 INFO L175 Difference]: Start difference. First operand has 510 places, 398 transitions, 4107 flow. Second operand 11 states and 117 transitions. [2024-06-03 18:46:28,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 418 transitions, 5057 flow [2024-06-03 18:46:30,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 418 transitions, 4921 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 18:46:30,047 INFO L231 Difference]: Finished difference. Result has 504 places, 399 transitions, 4181 flow [2024-06-03 18:46:30,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4181, PETRI_PLACES=504, PETRI_TRANSITIONS=399} [2024-06-03 18:46:30,047 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-03 18:46:30,047 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 399 transitions, 4181 flow [2024-06-03 18:46:30,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:30,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:30,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:30,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-03 18:46:30,048 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:30,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:30,048 INFO L85 PathProgramCache]: Analyzing trace with hash 897874314, now seen corresponding path program 23 times [2024-06-03 18:46:30,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:30,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930212496] [2024-06-03 18:46:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:30,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:31,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930212496] [2024-06-03 18:46:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930212496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:31,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:31,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719359132] [2024-06-03 18:46:31,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:31,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:31,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:31,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:31,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 399 transitions, 4181 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:31,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:31,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:31,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:32,743 INFO L124 PetriNetUnfolderBase]: 1205/2216 cut-off events. [2024-06-03 18:46:32,743 INFO L125 PetriNetUnfolderBase]: For 248918/248918 co-relation queries the response was YES. [2024-06-03 18:46:32,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13202 conditions, 2216 events. 1205/2216 cut-off events. For 248918/248918 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13764 event pairs, 299 based on Foata normal form. 2/2218 useless extension candidates. Maximal degree in co-relation 12987. Up to 1953 conditions per place. [2024-06-03 18:46:32,776 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 350 selfloop transitions, 67 changer transitions 0/419 dead transitions. [2024-06-03 18:46:32,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 419 transitions, 5133 flow [2024-06-03 18:46:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:46:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:46:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 18:46:32,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-03 18:46:32,777 INFO L175 Difference]: Start difference. First operand has 504 places, 399 transitions, 4181 flow. Second operand 11 states and 118 transitions. [2024-06-03 18:46:32,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 419 transitions, 5133 flow [2024-06-03 18:46:34,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 419 transitions, 4929 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-03 18:46:34,523 INFO L231 Difference]: Finished difference. Result has 505 places, 400 transitions, 4189 flow [2024-06-03 18:46:34,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3983, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4189, PETRI_PLACES=505, PETRI_TRANSITIONS=400} [2024-06-03 18:46:34,524 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-03 18:46:34,524 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 400 transitions, 4189 flow [2024-06-03 18:46:34,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:34,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:34,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:34,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-03 18:46:34,524 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:34,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:34,525 INFO L85 PathProgramCache]: Analyzing trace with hash -879234104, now seen corresponding path program 24 times [2024-06-03 18:46:34,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:34,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503019013] [2024-06-03 18:46:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:34,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:36,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503019013] [2024-06-03 18:46:36,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503019013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:36,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:36,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:36,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292835149] [2024-06-03 18:46:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:36,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:36,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:36,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:36,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 400 transitions, 4189 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:36,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:36,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:36,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:37,207 INFO L124 PetriNetUnfolderBase]: 1209/2224 cut-off events. [2024-06-03 18:46:37,207 INFO L125 PetriNetUnfolderBase]: For 241935/241935 co-relation queries the response was YES. [2024-06-03 18:46:37,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13177 conditions, 2224 events. 1209/2224 cut-off events. For 241935/241935 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13838 event pairs, 298 based on Foata normal form. 2/2226 useless extension candidates. Maximal degree in co-relation 12962. Up to 2017 conditions per place. [2024-06-03 18:46:37,235 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 366 selfloop transitions, 52 changer transitions 0/420 dead transitions. [2024-06-03 18:46:37,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 420 transitions, 5137 flow [2024-06-03 18:46:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:46:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:46:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 18:46:37,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-03 18:46:37,236 INFO L175 Difference]: Start difference. First operand has 505 places, 400 transitions, 4189 flow. Second operand 11 states and 115 transitions. [2024-06-03 18:46:37,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 420 transitions, 5137 flow [2024-06-03 18:46:38,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 420 transitions, 4932 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-03 18:46:38,640 INFO L231 Difference]: Finished difference. Result has 505 places, 401 transitions, 4162 flow [2024-06-03 18:46:38,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3988, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4162, PETRI_PLACES=505, PETRI_TRANSITIONS=401} [2024-06-03 18:46:38,641 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-03 18:46:38,641 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 401 transitions, 4162 flow [2024-06-03 18:46:38,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:38,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:38,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:38,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-03 18:46:38,641 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:38,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -882809024, now seen corresponding path program 25 times [2024-06-03 18:46:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702869160] [2024-06-03 18:46:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702869160] [2024-06-03 18:46:40,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702869160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:40,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:40,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:46:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061731149] [2024-06-03 18:46:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:46:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:40,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:46:40,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:46:40,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:40,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 401 transitions, 4162 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:40,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:40,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:40,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:41,058 INFO L124 PetriNetUnfolderBase]: 1213/2232 cut-off events. [2024-06-03 18:46:41,059 INFO L125 PetriNetUnfolderBase]: For 238220/238220 co-relation queries the response was YES. [2024-06-03 18:46:41,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13141 conditions, 2232 events. 1213/2232 cut-off events. For 238220/238220 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13907 event pairs, 296 based on Foata normal form. 2/2234 useless extension candidates. Maximal degree in co-relation 12927. Up to 2034 conditions per place. [2024-06-03 18:46:41,089 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 376 selfloop transitions, 43 changer transitions 0/421 dead transitions. [2024-06-03 18:46:41,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 421 transitions, 5108 flow [2024-06-03 18:46:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:46:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:46:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-03 18:46:41,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-03 18:46:41,090 INFO L175 Difference]: Start difference. First operand has 505 places, 401 transitions, 4162 flow. Second operand 11 states and 114 transitions. [2024-06-03 18:46:41,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 421 transitions, 5108 flow [2024-06-03 18:46:42,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 421 transitions, 4944 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-03 18:46:42,559 INFO L231 Difference]: Finished difference. Result has 507 places, 402 transitions, 4156 flow [2024-06-03 18:46:42,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4156, PETRI_PLACES=507, PETRI_TRANSITIONS=402} [2024-06-03 18:46:42,560 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-03 18:46:42,560 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 402 transitions, 4156 flow [2024-06-03 18:46:42,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:42,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:42,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:42,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-03 18:46:42,560 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:42,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:42,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1611292322, now seen corresponding path program 26 times [2024-06-03 18:46:42,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:42,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347221992] [2024-06-03 18:46:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:42,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:44,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:44,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347221992] [2024-06-03 18:46:44,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347221992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:44,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:44,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:44,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186397293] [2024-06-03 18:46:44,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:44,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:44,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:44,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:44,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 402 transitions, 4156 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:44,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:44,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:44,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:45,371 INFO L124 PetriNetUnfolderBase]: 1217/2240 cut-off events. [2024-06-03 18:46:45,372 INFO L125 PetriNetUnfolderBase]: For 234864/234864 co-relation queries the response was YES. [2024-06-03 18:46:45,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13137 conditions, 2240 events. 1217/2240 cut-off events. For 234864/234864 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13981 event pairs, 240 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 12922. Up to 1941 conditions per place. [2024-06-03 18:46:45,405 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 368 selfloop transitions, 54 changer transitions 0/424 dead transitions. [2024-06-03 18:46:45,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 424 transitions, 5110 flow [2024-06-03 18:46:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:46:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:46:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-03 18:46:45,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30808080808080807 [2024-06-03 18:46:45,406 INFO L175 Difference]: Start difference. First operand has 507 places, 402 transitions, 4156 flow. Second operand 12 states and 122 transitions. [2024-06-03 18:46:45,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 424 transitions, 5110 flow [2024-06-03 18:46:46,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 424 transitions, 4966 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-03 18:46:46,885 INFO L231 Difference]: Finished difference. Result has 510 places, 403 transitions, 4192 flow [2024-06-03 18:46:46,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4192, PETRI_PLACES=510, PETRI_TRANSITIONS=403} [2024-06-03 18:46:46,885 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-03 18:46:46,885 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 403 transitions, 4192 flow [2024-06-03 18:46:46,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:46,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:46,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:46,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-03 18:46:46,885 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:46,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:46,886 INFO L85 PathProgramCache]: Analyzing trace with hash 971466688, now seen corresponding path program 8 times [2024-06-03 18:46:46,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:46,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253381747] [2024-06-03 18:46:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:46,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253381747] [2024-06-03 18:46:48,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253381747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:48,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904286775] [2024-06-03 18:46:48,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:48,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:48,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:48,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:48,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 403 transitions, 4192 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:48,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:48,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:48,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:49,754 INFO L124 PetriNetUnfolderBase]: 1233/2276 cut-off events. [2024-06-03 18:46:49,754 INFO L125 PetriNetUnfolderBase]: For 305246/305246 co-relation queries the response was YES. [2024-06-03 18:46:49,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13227 conditions, 2276 events. 1233/2276 cut-off events. For 305246/305246 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 14231 event pairs, 323 based on Foata normal form. 10/2286 useless extension candidates. Maximal degree in co-relation 13011. Up to 2069 conditions per place. [2024-06-03 18:46:49,787 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 374 selfloop transitions, 41 changer transitions 11/428 dead transitions. [2024-06-03 18:46:49,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 428 transitions, 5152 flow [2024-06-03 18:46:49,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:46:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:46:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-03 18:46:49,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-03 18:46:49,788 INFO L175 Difference]: Start difference. First operand has 510 places, 403 transitions, 4192 flow. Second operand 12 states and 129 transitions. [2024-06-03 18:46:49,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 428 transitions, 5152 flow [2024-06-03 18:46:51,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 428 transitions, 4992 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-03 18:46:51,247 INFO L231 Difference]: Finished difference. Result has 512 places, 400 transitions, 4084 flow [2024-06-03 18:46:51,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4032, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4084, PETRI_PLACES=512, PETRI_TRANSITIONS=400} [2024-06-03 18:46:51,248 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-03 18:46:51,248 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 400 transitions, 4084 flow [2024-06-03 18:46:51,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:51,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:51,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:51,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-03 18:46:51,248 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:51,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:51,249 INFO L85 PathProgramCache]: Analyzing trace with hash 38410935, now seen corresponding path program 3 times [2024-06-03 18:46:51,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:51,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794472531] [2024-06-03 18:46:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:51,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:52,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794472531] [2024-06-03 18:46:52,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794472531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:52,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:52,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241901210] [2024-06-03 18:46:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:52,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:52,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:52,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:52,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:52,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 400 transitions, 4084 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:52,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:52,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:52,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:53,917 INFO L124 PetriNetUnfolderBase]: 1205/2223 cut-off events. [2024-06-03 18:46:53,917 INFO L125 PetriNetUnfolderBase]: For 202308/202308 co-relation queries the response was YES. [2024-06-03 18:46:53,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12624 conditions, 2223 events. 1205/2223 cut-off events. For 202308/202308 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13854 event pairs, 311 based on Foata normal form. 1/2224 useless extension candidates. Maximal degree in co-relation 12407. Up to 2021 conditions per place. [2024-06-03 18:46:53,952 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 348 selfloop transitions, 68 changer transitions 0/418 dead transitions. [2024-06-03 18:46:53,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 418 transitions, 4966 flow [2024-06-03 18:46:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:46:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:46:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 18:46:53,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-03 18:46:53,957 INFO L175 Difference]: Start difference. First operand has 512 places, 400 transitions, 4084 flow. Second operand 11 states and 117 transitions. [2024-06-03 18:46:53,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 418 transitions, 4966 flow [2024-06-03 18:46:55,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 418 transitions, 4850 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-03 18:46:55,335 INFO L231 Difference]: Finished difference. Result has 509 places, 400 transitions, 4115 flow [2024-06-03 18:46:55,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3968, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4115, PETRI_PLACES=509, PETRI_TRANSITIONS=400} [2024-06-03 18:46:55,335 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-03 18:46:55,335 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 400 transitions, 4115 flow [2024-06-03 18:46:55,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:55,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:55,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:55,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-03 18:46:55,335 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:55,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash 489583116, now seen corresponding path program 27 times [2024-06-03 18:46:55,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:55,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790529335] [2024-06-03 18:46:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:55,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:46:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:46:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:46:56,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790529335] [2024-06-03 18:46:56,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790529335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:46:56,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:46:56,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:46:56,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944371426] [2024-06-03 18:46:56,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:46:56,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:46:56,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:46:56,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:46:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:46:57,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:46:57,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 400 transitions, 4115 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:57,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:46:57,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:46:57,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:46:57,938 INFO L124 PetriNetUnfolderBase]: 1209/2231 cut-off events. [2024-06-03 18:46:57,938 INFO L125 PetriNetUnfolderBase]: For 212798/212798 co-relation queries the response was YES. [2024-06-03 18:46:57,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12755 conditions, 2231 events. 1209/2231 cut-off events. For 212798/212798 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13897 event pairs, 239 based on Foata normal form. 2/2233 useless extension candidates. Maximal degree in co-relation 12539. Up to 1963 conditions per place. [2024-06-03 18:46:57,973 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 342 selfloop transitions, 77 changer transitions 0/421 dead transitions. [2024-06-03 18:46:57,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 421 transitions, 5065 flow [2024-06-03 18:46:57,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:46:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:46:57,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 18:46:57,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-03 18:46:57,974 INFO L175 Difference]: Start difference. First operand has 509 places, 400 transitions, 4115 flow. Second operand 11 states and 122 transitions. [2024-06-03 18:46:57,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 421 transitions, 5065 flow [2024-06-03 18:46:59,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 421 transitions, 4777 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-03 18:46:59,258 INFO L231 Difference]: Finished difference. Result has 506 places, 401 transitions, 4039 flow [2024-06-03 18:46:59,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4039, PETRI_PLACES=506, PETRI_TRANSITIONS=401} [2024-06-03 18:46:59,258 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-03 18:46:59,259 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 401 transitions, 4039 flow [2024-06-03 18:46:59,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:46:59,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:46:59,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:46:59,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-03 18:46:59,259 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:46:59,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:46:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash -45652266, now seen corresponding path program 28 times [2024-06-03 18:46:59,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:46:59,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901199389] [2024-06-03 18:46:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:46:59,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:46:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:01,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:01,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901199389] [2024-06-03 18:47:01,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901199389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:01,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:01,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:01,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840127728] [2024-06-03 18:47:01,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:01,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:01,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:01,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:01,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:01,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:01,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 401 transitions, 4039 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:01,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:01,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:01,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:02,095 INFO L124 PetriNetUnfolderBase]: 1213/2239 cut-off events. [2024-06-03 18:47:02,096 INFO L125 PetriNetUnfolderBase]: For 208775/208775 co-relation queries the response was YES. [2024-06-03 18:47:02,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12744 conditions, 2239 events. 1213/2239 cut-off events. For 208775/208775 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13995 event pairs, 235 based on Foata normal form. 2/2241 useless extension candidates. Maximal degree in co-relation 12529. Up to 1957 conditions per place. [2024-06-03 18:47:02,130 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 342 selfloop transitions, 78 changer transitions 0/422 dead transitions. [2024-06-03 18:47:02,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 422 transitions, 4991 flow [2024-06-03 18:47:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 18:47:02,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:47:02,131 INFO L175 Difference]: Start difference. First operand has 506 places, 401 transitions, 4039 flow. Second operand 11 states and 121 transitions. [2024-06-03 18:47:02,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 422 transitions, 4991 flow [2024-06-03 18:47:03,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 422 transitions, 4789 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-03 18:47:03,426 INFO L231 Difference]: Finished difference. Result has 508 places, 402 transitions, 4055 flow [2024-06-03 18:47:03,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3837, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4055, PETRI_PLACES=508, PETRI_TRANSITIONS=402} [2024-06-03 18:47:03,427 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-03 18:47:03,427 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 402 transitions, 4055 flow [2024-06-03 18:47:03,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:03,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:03,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:03,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-03 18:47:03,427 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:03,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash -507224918, now seen corresponding path program 29 times [2024-06-03 18:47:03,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:03,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369873956] [2024-06-03 18:47:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:03,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:05,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:05,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369873956] [2024-06-03 18:47:05,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369873956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:05,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:05,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:05,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718846546] [2024-06-03 18:47:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:05,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:05,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:05,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:05,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:05,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:05,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 402 transitions, 4055 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:05,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:05,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:05,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:06,178 INFO L124 PetriNetUnfolderBase]: 1217/2247 cut-off events. [2024-06-03 18:47:06,178 INFO L125 PetriNetUnfolderBase]: For 211989/211989 co-relation queries the response was YES. [2024-06-03 18:47:06,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12811 conditions, 2247 events. 1217/2247 cut-off events. For 211989/211989 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 14066 event pairs, 261 based on Foata normal form. 2/2249 useless extension candidates. Maximal degree in co-relation 12595. Up to 2036 conditions per place. [2024-06-03 18:47:06,213 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 359 selfloop transitions, 60 changer transitions 0/421 dead transitions. [2024-06-03 18:47:06,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 421 transitions, 4999 flow [2024-06-03 18:47:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 18:47:06,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-03 18:47:06,214 INFO L175 Difference]: Start difference. First operand has 508 places, 402 transitions, 4055 flow. Second operand 11 states and 120 transitions. [2024-06-03 18:47:06,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 421 transitions, 4999 flow [2024-06-03 18:47:07,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 421 transitions, 4791 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-03 18:47:07,442 INFO L231 Difference]: Finished difference. Result has 510 places, 403 transitions, 4031 flow [2024-06-03 18:47:07,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4031, PETRI_PLACES=510, PETRI_TRANSITIONS=403} [2024-06-03 18:47:07,443 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-03 18:47:07,443 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 403 transitions, 4031 flow [2024-06-03 18:47:07,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:07,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:07,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:07,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-03 18:47:07,443 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:07,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:07,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1042460300, now seen corresponding path program 30 times [2024-06-03 18:47:07,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:07,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984155271] [2024-06-03 18:47:07,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:07,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:09,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:09,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984155271] [2024-06-03 18:47:09,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984155271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:09,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:09,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:09,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130046255] [2024-06-03 18:47:09,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:09,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:09,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:09,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:09,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:09,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:09,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 403 transitions, 4031 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:09,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:09,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:09,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:10,428 INFO L124 PetriNetUnfolderBase]: 1221/2255 cut-off events. [2024-06-03 18:47:10,428 INFO L125 PetriNetUnfolderBase]: For 211988/211988 co-relation queries the response was YES. [2024-06-03 18:47:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12798 conditions, 2255 events. 1221/2255 cut-off events. For 211988/211988 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14084 event pairs, 259 based on Foata normal form. 2/2257 useless extension candidates. Maximal degree in co-relation 12581. Up to 2016 conditions per place. [2024-06-03 18:47:10,458 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 358 selfloop transitions, 62 changer transitions 0/422 dead transitions. [2024-06-03 18:47:10,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 422 transitions, 4975 flow [2024-06-03 18:47:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 18:47:10,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:47:10,459 INFO L175 Difference]: Start difference. First operand has 510 places, 403 transitions, 4031 flow. Second operand 11 states and 121 transitions. [2024-06-03 18:47:10,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 422 transitions, 4975 flow [2024-06-03 18:47:11,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 422 transitions, 4805 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-03 18:47:11,887 INFO L231 Difference]: Finished difference. Result has 512 places, 404 transitions, 4049 flow [2024-06-03 18:47:11,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3863, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4049, PETRI_PLACES=512, PETRI_TRANSITIONS=404} [2024-06-03 18:47:11,888 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-03 18:47:11,888 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 404 transitions, 4049 flow [2024-06-03 18:47:11,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:11,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:11,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:11,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-03 18:47:11,888 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:11,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1042604450, now seen corresponding path program 31 times [2024-06-03 18:47:11,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:11,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823996402] [2024-06-03 18:47:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:11,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:13,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:13,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823996402] [2024-06-03 18:47:13,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823996402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:13,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:13,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:47:13,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286082355] [2024-06-03 18:47:13,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:13,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:47:13,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:13,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:47:13,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:47:13,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:13,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 404 transitions, 4049 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:13,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:13,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:13,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:14,285 INFO L124 PetriNetUnfolderBase]: 1225/2263 cut-off events. [2024-06-03 18:47:14,285 INFO L125 PetriNetUnfolderBase]: For 212020/212020 co-relation queries the response was YES. [2024-06-03 18:47:14,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12843 conditions, 2263 events. 1225/2263 cut-off events. For 212020/212020 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 14205 event pairs, 257 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 12625. Up to 2052 conditions per place. [2024-06-03 18:47:14,315 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 364 selfloop transitions, 57 changer transitions 0/423 dead transitions. [2024-06-03 18:47:14,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 423 transitions, 4993 flow [2024-06-03 18:47:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:14,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 18:47:14,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-03 18:47:14,316 INFO L175 Difference]: Start difference. First operand has 512 places, 404 transitions, 4049 flow. Second operand 11 states and 118 transitions. [2024-06-03 18:47:14,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 423 transitions, 4993 flow [2024-06-03 18:47:15,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 423 transitions, 4813 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-03 18:47:15,848 INFO L231 Difference]: Finished difference. Result has 513 places, 405 transitions, 4047 flow [2024-06-03 18:47:15,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4047, PETRI_PLACES=513, PETRI_TRANSITIONS=405} [2024-06-03 18:47:15,848 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-03 18:47:15,849 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 405 transitions, 4047 flow [2024-06-03 18:47:15,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:15,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:15,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:15,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-03 18:47:15,849 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:15,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash -510949568, now seen corresponding path program 32 times [2024-06-03 18:47:15,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:15,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057595814] [2024-06-03 18:47:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:15,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057595814] [2024-06-03 18:47:17,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057595814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:17,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:17,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35563418] [2024-06-03 18:47:17,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:17,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:17,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:17,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:17,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:17,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:17,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 405 transitions, 4047 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:17,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:17,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:17,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:18,367 INFO L124 PetriNetUnfolderBase]: 1229/2271 cut-off events. [2024-06-03 18:47:18,367 INFO L125 PetriNetUnfolderBase]: For 211970/211970 co-relation queries the response was YES. [2024-06-03 18:47:18,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12859 conditions, 2271 events. 1229/2271 cut-off events. For 211970/211970 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14237 event pairs, 255 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 12641. Up to 2060 conditions per place. [2024-06-03 18:47:18,401 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 367 selfloop transitions, 55 changer transitions 0/424 dead transitions. [2024-06-03 18:47:18,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 424 transitions, 4991 flow [2024-06-03 18:47:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 18:47:18,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-03 18:47:18,402 INFO L175 Difference]: Start difference. First operand has 513 places, 405 transitions, 4047 flow. Second operand 11 states and 117 transitions. [2024-06-03 18:47:18,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 424 transitions, 4991 flow [2024-06-03 18:47:19,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 424 transitions, 4825 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-03 18:47:19,964 INFO L231 Difference]: Finished difference. Result has 515 places, 406 transitions, 4055 flow [2024-06-03 18:47:19,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3883, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4055, PETRI_PLACES=515, PETRI_TRANSITIONS=406} [2024-06-03 18:47:19,965 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-03 18:47:19,965 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 406 transitions, 4055 flow [2024-06-03 18:47:19,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:19,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:19,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:19,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-03 18:47:19,965 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:19,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:19,966 INFO L85 PathProgramCache]: Analyzing trace with hash -898354444, now seen corresponding path program 9 times [2024-06-03 18:47:19,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:19,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452133351] [2024-06-03 18:47:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:22,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:22,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452133351] [2024-06-03 18:47:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452133351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713308716] [2024-06-03 18:47:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:22,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:22,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 406 transitions, 4055 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:22,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:22,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:22,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:23,692 INFO L124 PetriNetUnfolderBase]: 1245/2307 cut-off events. [2024-06-03 18:47:23,692 INFO L125 PetriNetUnfolderBase]: For 286291/286291 co-relation queries the response was YES. [2024-06-03 18:47:23,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12924 conditions, 2307 events. 1245/2307 cut-off events. For 286291/286291 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14557 event pairs, 273 based on Foata normal form. 10/2317 useless extension candidates. Maximal degree in co-relation 12705. Up to 2038 conditions per place. [2024-06-03 18:47:23,728 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 356 selfloop transitions, 53 changer transitions 19/430 dead transitions. [2024-06-03 18:47:23,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 430 transitions, 5017 flow [2024-06-03 18:47:23,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:47:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:47:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 18:47:23,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-03 18:47:23,729 INFO L175 Difference]: Start difference. First operand has 515 places, 406 transitions, 4055 flow. Second operand 12 states and 133 transitions. [2024-06-03 18:47:23,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 430 transitions, 5017 flow [2024-06-03 18:47:25,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 430 transitions, 4857 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-03 18:47:25,104 INFO L231 Difference]: Finished difference. Result has 518 places, 397 transitions, 3925 flow [2024-06-03 18:47:25,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3925, PETRI_PLACES=518, PETRI_TRANSITIONS=397} [2024-06-03 18:47:25,105 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 486 predicate places. [2024-06-03 18:47:25,105 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 397 transitions, 3925 flow [2024-06-03 18:47:25,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:25,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:25,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:25,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-03 18:47:25,106 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:25,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:25,106 INFO L85 PathProgramCache]: Analyzing trace with hash -45796416, now seen corresponding path program 33 times [2024-06-03 18:47:25,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:25,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206478910] [2024-06-03 18:47:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:26,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:26,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206478910] [2024-06-03 18:47:26,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206478910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:26,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:26,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:26,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778419825] [2024-06-03 18:47:26,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:26,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:26,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:26,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:26,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:26,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 397 transitions, 3925 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:26,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:26,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:26,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:27,776 INFO L124 PetriNetUnfolderBase]: 1203/2229 cut-off events. [2024-06-03 18:47:27,776 INFO L125 PetriNetUnfolderBase]: For 210587/210587 co-relation queries the response was YES. [2024-06-03 18:47:27,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12557 conditions, 2229 events. 1203/2229 cut-off events. For 210587/210587 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13982 event pairs, 239 based on Foata normal form. 2/2231 useless extension candidates. Maximal degree in co-relation 12337. Up to 1947 conditions per place. [2024-06-03 18:47:27,810 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 339 selfloop transitions, 77 changer transitions 0/418 dead transitions. [2024-06-03 18:47:27,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 418 transitions, 4867 flow [2024-06-03 18:47:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 18:47:27,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-03 18:47:27,811 INFO L175 Difference]: Start difference. First operand has 518 places, 397 transitions, 3925 flow. Second operand 11 states and 120 transitions. [2024-06-03 18:47:27,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 418 transitions, 4867 flow [2024-06-03 18:47:29,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 418 transitions, 4741 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-03 18:47:29,133 INFO L231 Difference]: Finished difference. Result has 508 places, 398 transitions, 4015 flow [2024-06-03 18:47:29,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3803, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4015, PETRI_PLACES=508, PETRI_TRANSITIONS=398} [2024-06-03 18:47:29,134 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-03 18:47:29,134 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 398 transitions, 4015 flow [2024-06-03 18:47:29,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:29,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:29,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:29,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-03 18:47:29,134 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:29,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash 495155242, now seen corresponding path program 10 times [2024-06-03 18:47:29,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:29,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793641505] [2024-06-03 18:47:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:29,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:31,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:31,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793641505] [2024-06-03 18:47:31,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793641505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:31,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:31,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:31,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676800350] [2024-06-03 18:47:31,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:31,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:31,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:32,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:32,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 398 transitions, 4015 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:32,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:32,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:32,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:32,985 INFO L124 PetriNetUnfolderBase]: 1219/2265 cut-off events. [2024-06-03 18:47:32,985 INFO L125 PetriNetUnfolderBase]: For 267361/267361 co-relation queries the response was YES. [2024-06-03 18:47:33,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12681 conditions, 2265 events. 1219/2265 cut-off events. For 267361/267361 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14240 event pairs, 253 based on Foata normal form. 10/2275 useless extension candidates. Maximal degree in co-relation 12465. Up to 1943 conditions per place. [2024-06-03 18:47:33,019 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 333 selfloop transitions, 73 changer transitions 16/424 dead transitions. [2024-06-03 18:47:33,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 424 transitions, 4973 flow [2024-06-03 18:47:33,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:47:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:47:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 18:47:33,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 18:47:33,020 INFO L175 Difference]: Start difference. First operand has 508 places, 398 transitions, 4015 flow. Second operand 12 states and 135 transitions. [2024-06-03 18:47:33,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 424 transitions, 4973 flow [2024-06-03 18:47:34,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 424 transitions, 4773 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-03 18:47:34,207 INFO L231 Difference]: Finished difference. Result has 511 places, 392 transitions, 3928 flow [2024-06-03 18:47:34,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3928, PETRI_PLACES=511, PETRI_TRANSITIONS=392} [2024-06-03 18:47:34,208 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-03 18:47:34,208 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 392 transitions, 3928 flow [2024-06-03 18:47:34,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:34,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:34,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:34,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-03 18:47:34,208 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:34,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash 696236556, now seen corresponding path program 34 times [2024-06-03 18:47:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:34,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195906082] [2024-06-03 18:47:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:36,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:36,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195906082] [2024-06-03 18:47:36,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195906082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:36,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:36,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:36,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089406640] [2024-06-03 18:47:36,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:36,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:36,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:36,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:36,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:36,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:36,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 392 transitions, 3928 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:36,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:36,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:36,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:37,087 INFO L124 PetriNetUnfolderBase]: 1187/2205 cut-off events. [2024-06-03 18:47:37,087 INFO L125 PetriNetUnfolderBase]: For 198639/198639 co-relation queries the response was YES. [2024-06-03 18:47:37,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12418 conditions, 2205 events. 1187/2205 cut-off events. For 198639/198639 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13853 event pairs, 241 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 12201. Up to 1798 conditions per place. [2024-06-03 18:47:37,121 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 307 selfloop transitions, 106 changer transitions 0/415 dead transitions. [2024-06-03 18:47:37,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 415 transitions, 4876 flow [2024-06-03 18:47:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 18:47:37,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-03 18:47:37,123 INFO L175 Difference]: Start difference. First operand has 511 places, 392 transitions, 3928 flow. Second operand 11 states and 126 transitions. [2024-06-03 18:47:37,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 415 transitions, 4876 flow [2024-06-03 18:47:38,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 415 transitions, 4718 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 18:47:38,500 INFO L231 Difference]: Finished difference. Result has 504 places, 393 transitions, 4038 flow [2024-06-03 18:47:38,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4038, PETRI_PLACES=504, PETRI_TRANSITIONS=393} [2024-06-03 18:47:38,500 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-03 18:47:38,500 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 393 transitions, 4038 flow [2024-06-03 18:47:38,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:38,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:38,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:38,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-03 18:47:38,500 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:38,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:38,501 INFO L85 PathProgramCache]: Analyzing trace with hash 161283460, now seen corresponding path program 11 times [2024-06-03 18:47:38,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:38,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955827828] [2024-06-03 18:47:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:38,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:41,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:41,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955827828] [2024-06-03 18:47:41,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955827828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:41,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:41,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:41,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754622228] [2024-06-03 18:47:41,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:41,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:41,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:41,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:41,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:41,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:41,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 393 transitions, 4038 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:41,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:41,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:41,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:42,632 INFO L124 PetriNetUnfolderBase]: 1228/2292 cut-off events. [2024-06-03 18:47:42,632 INFO L125 PetriNetUnfolderBase]: For 323674/323674 co-relation queries the response was YES. [2024-06-03 18:47:42,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14093 conditions, 2292 events. 1228/2292 cut-off events. For 323674/323674 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 14405 event pairs, 254 based on Foata normal form. 8/2300 useless extension candidates. Maximal degree in co-relation 13879. Up to 1654 conditions per place. [2024-06-03 18:47:42,666 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 300 selfloop transitions, 115 changer transitions 10/427 dead transitions. [2024-06-03 18:47:42,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 427 transitions, 5322 flow [2024-06-03 18:47:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:47:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:47:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-03 18:47:42,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:47:42,667 INFO L175 Difference]: Start difference. First operand has 504 places, 393 transitions, 4038 flow. Second operand 12 states and 144 transitions. [2024-06-03 18:47:42,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 427 transitions, 5322 flow [2024-06-03 18:47:44,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 427 transitions, 5066 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 18:47:44,433 INFO L231 Difference]: Finished difference. Result has 507 places, 389 transitions, 3978 flow [2024-06-03 18:47:44,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3978, PETRI_PLACES=507, PETRI_TRANSITIONS=389} [2024-06-03 18:47:44,433 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-03 18:47:44,433 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 389 transitions, 3978 flow [2024-06-03 18:47:44,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:44,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:44,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:44,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-03 18:47:44,433 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:44,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash -63753374, now seen corresponding path program 12 times [2024-06-03 18:47:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:44,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344045332] [2024-06-03 18:47:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:46,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:46,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344045332] [2024-06-03 18:47:46,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344045332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:46,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:46,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:46,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504629426] [2024-06-03 18:47:46,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:46,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:46,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:46,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:46,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 389 transitions, 3978 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:46,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:46,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:46,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:47,327 INFO L124 PetriNetUnfolderBase]: 1214/2270 cut-off events. [2024-06-03 18:47:47,327 INFO L125 PetriNetUnfolderBase]: For 344713/344713 co-relation queries the response was YES. [2024-06-03 18:47:47,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13968 conditions, 2270 events. 1214/2270 cut-off events. For 344713/344713 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14270 event pairs, 258 based on Foata normal form. 10/2280 useless extension candidates. Maximal degree in co-relation 13753. Up to 1771 conditions per place. [2024-06-03 18:47:47,361 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 293 selfloop transitions, 107 changer transitions 13/415 dead transitions. [2024-06-03 18:47:47,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 415 transitions, 4924 flow [2024-06-03 18:47:47,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 18:47:47,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 18:47:47,362 INFO L175 Difference]: Start difference. First operand has 507 places, 389 transitions, 3978 flow. Second operand 11 states and 132 transitions. [2024-06-03 18:47:47,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 415 transitions, 4924 flow [2024-06-03 18:47:49,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 415 transitions, 4702 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 18:47:49,026 INFO L231 Difference]: Finished difference. Result has 504 places, 380 transitions, 3904 flow [2024-06-03 18:47:49,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3756, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3904, PETRI_PLACES=504, PETRI_TRANSITIONS=380} [2024-06-03 18:47:49,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-03 18:47:49,026 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 380 transitions, 3904 flow [2024-06-03 18:47:49,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:49,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:49,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-03 18:47:49,027 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:49,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash 688884906, now seen corresponding path program 35 times [2024-06-03 18:47:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:49,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601423446] [2024-06-03 18:47:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:49,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601423446] [2024-06-03 18:47:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601423446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:50,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:50,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083433521] [2024-06-03 18:47:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:50,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:50,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:50,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:50,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:51,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:51,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 380 transitions, 3904 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:51,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:51,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:51,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:51,840 INFO L124 PetriNetUnfolderBase]: 1177/2203 cut-off events. [2024-06-03 18:47:51,840 INFO L125 PetriNetUnfolderBase]: For 272448/272448 co-relation queries the response was YES. [2024-06-03 18:47:51,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13727 conditions, 2203 events. 1177/2203 cut-off events. For 272448/272448 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 13820 event pairs, 254 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 13513. Up to 1834 conditions per place. [2024-06-03 18:47:51,873 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 303 selfloop transitions, 97 changer transitions 0/402 dead transitions. [2024-06-03 18:47:51,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 402 transitions, 4820 flow [2024-06-03 18:47:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 18:47:51,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-03 18:47:51,874 INFO L175 Difference]: Start difference. First operand has 504 places, 380 transitions, 3904 flow. Second operand 11 states and 124 transitions. [2024-06-03 18:47:51,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 402 transitions, 4820 flow [2024-06-03 18:47:53,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 402 transitions, 4596 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-03 18:47:53,676 INFO L231 Difference]: Finished difference. Result has 497 places, 381 transitions, 3932 flow [2024-06-03 18:47:53,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3932, PETRI_PLACES=497, PETRI_TRANSITIONS=381} [2024-06-03 18:47:53,677 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-03 18:47:53,677 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 381 transitions, 3932 flow [2024-06-03 18:47:53,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:53,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:53,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:53,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-03 18:47:53,677 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:53,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:53,677 INFO L85 PathProgramCache]: Analyzing trace with hash 688879326, now seen corresponding path program 36 times [2024-06-03 18:47:53,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43086518] [2024-06-03 18:47:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43086518] [2024-06-03 18:47:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43086518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:55,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:55,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:55,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467049224] [2024-06-03 18:47:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:55,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:55,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:55,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:55,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 381 transitions, 3932 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:55,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:55,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:55,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:47:56,410 INFO L124 PetriNetUnfolderBase]: 1181/2211 cut-off events. [2024-06-03 18:47:56,410 INFO L125 PetriNetUnfolderBase]: For 264034/264034 co-relation queries the response was YES. [2024-06-03 18:47:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13742 conditions, 2211 events. 1181/2211 cut-off events. For 264034/264034 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 13872 event pairs, 254 based on Foata normal form. 2/2213 useless extension candidates. Maximal degree in co-relation 13531. Up to 1764 conditions per place. [2024-06-03 18:47:56,443 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 297 selfloop transitions, 104 changer transitions 0/403 dead transitions. [2024-06-03 18:47:56,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 403 transitions, 4850 flow [2024-06-03 18:47:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:47:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:47:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 18:47:56,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-03 18:47:56,444 INFO L175 Difference]: Start difference. First operand has 497 places, 381 transitions, 3932 flow. Second operand 11 states and 126 transitions. [2024-06-03 18:47:56,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 403 transitions, 4850 flow [2024-06-03 18:47:57,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 403 transitions, 4612 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-03 18:47:57,973 INFO L231 Difference]: Finished difference. Result has 499 places, 382 transitions, 3962 flow [2024-06-03 18:47:57,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3962, PETRI_PLACES=499, PETRI_TRANSITIONS=382} [2024-06-03 18:47:57,974 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 467 predicate places. [2024-06-03 18:47:57,974 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 382 transitions, 3962 flow [2024-06-03 18:47:57,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:57,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:47:57,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:47:57,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-03 18:47:57,974 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:47:57,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:47:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash 182657088, now seen corresponding path program 13 times [2024-06-03 18:47:57,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:47:57,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884455716] [2024-06-03 18:47:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:47:57,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:47:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:47:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:47:59,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:47:59,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884455716] [2024-06-03 18:47:59,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884455716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:47:59,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:47:59,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:47:59,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918912896] [2024-06-03 18:47:59,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:47:59,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:47:59,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:47:59,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:47:59,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:47:59,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:47:59,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 382 transitions, 3962 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:47:59,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:47:59,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:47:59,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:00,809 INFO L124 PetriNetUnfolderBase]: 1190/2234 cut-off events. [2024-06-03 18:48:00,810 INFO L125 PetriNetUnfolderBase]: For 309414/309414 co-relation queries the response was YES. [2024-06-03 18:48:00,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13547 conditions, 2234 events. 1190/2234 cut-off events. For 309414/309414 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 14063 event pairs, 257 based on Foata normal form. 10/2244 useless extension candidates. Maximal degree in co-relation 13335. Up to 1771 conditions per place. [2024-06-03 18:48:00,843 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 298 selfloop transitions, 100 changer transitions 9/409 dead transitions. [2024-06-03 18:48:00,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 409 transitions, 4896 flow [2024-06-03 18:48:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:48:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:48:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 18:48:00,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-03 18:48:00,844 INFO L175 Difference]: Start difference. First operand has 499 places, 382 transitions, 3962 flow. Second operand 12 states and 138 transitions. [2024-06-03 18:48:00,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 409 transitions, 4896 flow [2024-06-03 18:48:02,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 409 transitions, 4638 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-03 18:48:02,380 INFO L231 Difference]: Finished difference. Result has 500 places, 379 transitions, 3888 flow [2024-06-03 18:48:02,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3888, PETRI_PLACES=500, PETRI_TRANSITIONS=379} [2024-06-03 18:48:02,381 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-03 18:48:02,381 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 379 transitions, 3888 flow [2024-06-03 18:48:02,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:02,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:02,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:02,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-03 18:48:02,381 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:02,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:02,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1055654890, now seen corresponding path program 37 times [2024-06-03 18:48:02,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:02,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918937065] [2024-06-03 18:48:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:02,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918937065] [2024-06-03 18:48:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918937065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:04,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:04,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121273402] [2024-06-03 18:48:04,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:04,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:04,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:04,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:04,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 379 transitions, 3888 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:04,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:04,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:04,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:05,134 INFO L124 PetriNetUnfolderBase]: 1168/2194 cut-off events. [2024-06-03 18:48:05,135 INFO L125 PetriNetUnfolderBase]: For 247044/247044 co-relation queries the response was YES. [2024-06-03 18:48:05,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13342 conditions, 2194 events. 1168/2194 cut-off events. For 247044/247044 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13796 event pairs, 284 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 13131. Up to 2011 conditions per place. [2024-06-03 18:48:05,166 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 345 selfloop transitions, 50 changer transitions 0/397 dead transitions. [2024-06-03 18:48:05,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 397 transitions, 4778 flow [2024-06-03 18:48:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 18:48:05,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-03 18:48:05,167 INFO L175 Difference]: Start difference. First operand has 500 places, 379 transitions, 3888 flow. Second operand 11 states and 118 transitions. [2024-06-03 18:48:05,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 397 transitions, 4778 flow [2024-06-03 18:48:06,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 397 transitions, 4570 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-03 18:48:06,726 INFO L231 Difference]: Finished difference. Result has 497 places, 380 transitions, 3838 flow [2024-06-03 18:48:06,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3838, PETRI_PLACES=497, PETRI_TRANSITIONS=380} [2024-06-03 18:48:06,726 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-03 18:48:06,726 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 380 transitions, 3838 flow [2024-06-03 18:48:06,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:06,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:06,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:06,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-03 18:48:06,727 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:06,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1024953692, now seen corresponding path program 38 times [2024-06-03 18:48:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93086109] [2024-06-03 18:48:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:06,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:08,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:08,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93086109] [2024-06-03 18:48:08,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93086109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:08,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:08,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:08,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756543512] [2024-06-03 18:48:08,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:08,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:08,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:08,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 380 transitions, 3838 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:08,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:08,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:08,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:09,507 INFO L124 PetriNetUnfolderBase]: 1172/2202 cut-off events. [2024-06-03 18:48:09,508 INFO L125 PetriNetUnfolderBase]: For 244392/244392 co-relation queries the response was YES. [2024-06-03 18:48:09,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13316 conditions, 2202 events. 1172/2202 cut-off events. For 244392/244392 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13865 event pairs, 228 based on Foata normal form. 2/2204 useless extension candidates. Maximal degree in co-relation 13106. Up to 1860 conditions per place. [2024-06-03 18:48:09,537 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 309 selfloop transitions, 92 changer transitions 0/403 dead transitions. [2024-06-03 18:48:09,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 403 transitions, 4770 flow [2024-06-03 18:48:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 18:48:09,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-03 18:48:09,538 INFO L175 Difference]: Start difference. First operand has 497 places, 380 transitions, 3838 flow. Second operand 11 states and 127 transitions. [2024-06-03 18:48:09,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 403 transitions, 4770 flow [2024-06-03 18:48:11,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 403 transitions, 4622 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-03 18:48:11,074 INFO L231 Difference]: Finished difference. Result has 499 places, 381 transitions, 3934 flow [2024-06-03 18:48:11,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3934, PETRI_PLACES=499, PETRI_TRANSITIONS=381} [2024-06-03 18:48:11,074 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 467 predicate places. [2024-06-03 18:48:11,074 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 381 transitions, 3934 flow [2024-06-03 18:48:11,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:11,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:11,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:11,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-03 18:48:11,075 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:11,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash 298309410, now seen corresponding path program 39 times [2024-06-03 18:48:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178375757] [2024-06-03 18:48:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:12,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:12,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178375757] [2024-06-03 18:48:12,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178375757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:12,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:12,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:12,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780607764] [2024-06-03 18:48:12,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:12,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:12,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:12,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:12,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:12,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:12,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 381 transitions, 3934 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:12,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:12,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:12,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:13,727 INFO L124 PetriNetUnfolderBase]: 1176/2210 cut-off events. [2024-06-03 18:48:13,728 INFO L125 PetriNetUnfolderBase]: For 248627/248627 co-relation queries the response was YES. [2024-06-03 18:48:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13503 conditions, 2210 events. 1176/2210 cut-off events. For 248627/248627 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13932 event pairs, 284 based on Foata normal form. 2/2212 useless extension candidates. Maximal degree in co-relation 13292. Up to 2013 conditions per place. [2024-06-03 18:48:13,759 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 346 selfloop transitions, 51 changer transitions 0/399 dead transitions. [2024-06-03 18:48:13,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 399 transitions, 4830 flow [2024-06-03 18:48:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:13,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 18:48:13,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-03 18:48:13,760 INFO L175 Difference]: Start difference. First operand has 499 places, 381 transitions, 3934 flow. Second operand 11 states and 119 transitions. [2024-06-03 18:48:13,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 399 transitions, 4830 flow [2024-06-03 18:48:15,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 399 transitions, 4596 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-03 18:48:15,289 INFO L231 Difference]: Finished difference. Result has 501 places, 382 transitions, 3864 flow [2024-06-03 18:48:15,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3864, PETRI_PLACES=501, PETRI_TRANSITIONS=382} [2024-06-03 18:48:15,290 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-03 18:48:15,290 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 382 transitions, 3864 flow [2024-06-03 18:48:15,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:15,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:15,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:15,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-03 18:48:15,290 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:15,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:15,290 INFO L85 PathProgramCache]: Analyzing trace with hash 84161728, now seen corresponding path program 40 times [2024-06-03 18:48:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317261108] [2024-06-03 18:48:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:16,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:16,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317261108] [2024-06-03 18:48:16,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317261108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:16,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:16,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:48:16,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784749972] [2024-06-03 18:48:16,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:16,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:48:16,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:48:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:48:17,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:17,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 382 transitions, 3864 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:17,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:17,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:17,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:17,983 INFO L124 PetriNetUnfolderBase]: 1180/2218 cut-off events. [2024-06-03 18:48:17,983 INFO L125 PetriNetUnfolderBase]: For 252708/252708 co-relation queries the response was YES. [2024-06-03 18:48:18,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13450 conditions, 2218 events. 1180/2218 cut-off events. For 252708/252708 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 14027 event pairs, 274 based on Foata normal form. 2/2220 useless extension candidates. Maximal degree in co-relation 13238. Up to 1995 conditions per place. [2024-06-03 18:48:18,016 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 341 selfloop transitions, 60 changer transitions 0/403 dead transitions. [2024-06-03 18:48:18,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 403 transitions, 4790 flow [2024-06-03 18:48:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 18:48:18,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-03 18:48:18,017 INFO L175 Difference]: Start difference. First operand has 501 places, 382 transitions, 3864 flow. Second operand 11 states and 123 transitions. [2024-06-03 18:48:18,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 403 transitions, 4790 flow [2024-06-03 18:48:19,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 403 transitions, 4636 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-03 18:48:19,429 INFO L231 Difference]: Finished difference. Result has 503 places, 383 transitions, 3894 flow [2024-06-03 18:48:19,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3894, PETRI_PLACES=503, PETRI_TRANSITIONS=383} [2024-06-03 18:48:19,430 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-03 18:48:19,430 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 383 transitions, 3894 flow [2024-06-03 18:48:19,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:19,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:19,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:19,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-03 18:48:19,430 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:19,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:19,430 INFO L85 PathProgramCache]: Analyzing trace with hash -934309440, now seen corresponding path program 14 times [2024-06-03 18:48:19,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:19,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850168992] [2024-06-03 18:48:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:19,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:21,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:21,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850168992] [2024-06-03 18:48:21,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850168992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:21,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:21,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:21,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81467925] [2024-06-03 18:48:21,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:21,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:21,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:21,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:21,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 383 transitions, 3894 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:21,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:21,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:21,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:22,451 INFO L124 PetriNetUnfolderBase]: 1221/2305 cut-off events. [2024-06-03 18:48:22,451 INFO L125 PetriNetUnfolderBase]: For 384377/384377 co-relation queries the response was YES. [2024-06-03 18:48:22,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15057 conditions, 2305 events. 1221/2305 cut-off events. For 384377/384377 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 14583 event pairs, 247 based on Foata normal form. 8/2313 useless extension candidates. Maximal degree in co-relation 14844. Up to 1800 conditions per place. [2024-06-03 18:48:22,488 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 309 selfloop transitions, 98 changer transitions 8/417 dead transitions. [2024-06-03 18:48:22,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 417 transitions, 5160 flow [2024-06-03 18:48:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:48:22,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:48:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 18:48:22,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-03 18:48:22,489 INFO L175 Difference]: Start difference. First operand has 503 places, 383 transitions, 3894 flow. Second operand 12 states and 145 transitions. [2024-06-03 18:48:22,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 417 transitions, 5160 flow [2024-06-03 18:48:24,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 417 transitions, 4986 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-03 18:48:24,405 INFO L231 Difference]: Finished difference. Result has 506 places, 381 transitions, 3904 flow [2024-06-03 18:48:24,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3720, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3904, PETRI_PLACES=506, PETRI_TRANSITIONS=381} [2024-06-03 18:48:24,405 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-03 18:48:24,405 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 381 transitions, 3904 flow [2024-06-03 18:48:24,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:24,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:24,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:24,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-03 18:48:24,406 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:24,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash -934318740, now seen corresponding path program 15 times [2024-06-03 18:48:24,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:24,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625197033] [2024-06-03 18:48:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:24,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:26,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:26,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625197033] [2024-06-03 18:48:26,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625197033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:26,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:26,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:26,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055608571] [2024-06-03 18:48:26,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:26,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:26,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:26,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:26,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:26,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 381 transitions, 3904 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:26,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:26,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:26,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:27,481 INFO L124 PetriNetUnfolderBase]: 1213/2293 cut-off events. [2024-06-03 18:48:27,481 INFO L125 PetriNetUnfolderBase]: For 405646/405646 co-relation queries the response was YES. [2024-06-03 18:48:27,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15058 conditions, 2293 events. 1213/2293 cut-off events. For 405646/405646 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 14485 event pairs, 253 based on Foata normal form. 10/2303 useless extension candidates. Maximal degree in co-relation 14844. Up to 1865 conditions per place. [2024-06-03 18:48:27,519 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 302 selfloop transitions, 92 changer transitions 11/407 dead transitions. [2024-06-03 18:48:27,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 407 transitions, 4838 flow [2024-06-03 18:48:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 18:48:27,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-03 18:48:27,520 INFO L175 Difference]: Start difference. First operand has 506 places, 381 transitions, 3904 flow. Second operand 11 states and 133 transitions. [2024-06-03 18:48:27,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 407 transitions, 4838 flow [2024-06-03 18:48:29,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 407 transitions, 4646 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 18:48:29,258 INFO L231 Difference]: Finished difference. Result has 504 places, 374 transitions, 3847 flow [2024-06-03 18:48:29,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3847, PETRI_PLACES=504, PETRI_TRANSITIONS=374} [2024-06-03 18:48:29,258 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-03 18:48:29,258 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 374 transitions, 3847 flow [2024-06-03 18:48:29,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:29,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:29,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:29,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-03 18:48:29,259 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:29,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1483338538, now seen corresponding path program 41 times [2024-06-03 18:48:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559831406] [2024-06-03 18:48:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:30,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:30,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559831406] [2024-06-03 18:48:30,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559831406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:30,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:30,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:30,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205593818] [2024-06-03 18:48:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:30,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:30,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:30,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:30,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:30,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 374 transitions, 3847 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:30,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:30,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:30,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:31,736 INFO L124 PetriNetUnfolderBase]: 1179/2231 cut-off events. [2024-06-03 18:48:31,737 INFO L125 PetriNetUnfolderBase]: For 336552/336552 co-relation queries the response was YES. [2024-06-03 18:48:31,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14851 conditions, 2231 events. 1179/2231 cut-off events. For 336552/336552 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 14081 event pairs, 295 based on Foata normal form. 2/2233 useless extension candidates. Maximal degree in co-relation 14638. Up to 2048 conditions per place. [2024-06-03 18:48:31,770 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 342 selfloop transitions, 48 changer transitions 0/392 dead transitions. [2024-06-03 18:48:31,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 392 transitions, 4731 flow [2024-06-03 18:48:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 18:48:31,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-03 18:48:31,771 INFO L175 Difference]: Start difference. First operand has 504 places, 374 transitions, 3847 flow. Second operand 11 states and 116 transitions. [2024-06-03 18:48:31,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 392 transitions, 4731 flow [2024-06-03 18:48:33,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 392 transitions, 4537 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-03 18:48:33,538 INFO L231 Difference]: Finished difference. Result has 498 places, 375 transitions, 3815 flow [2024-06-03 18:48:33,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3815, PETRI_PLACES=498, PETRI_TRANSITIONS=375} [2024-06-03 18:48:33,538 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 466 predicate places. [2024-06-03 18:48:33,538 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 375 transitions, 3815 flow [2024-06-03 18:48:33,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:33,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:33,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:33,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-03 18:48:33,538 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:33,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:33,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1608017554, now seen corresponding path program 42 times [2024-06-03 18:48:33,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:33,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143485112] [2024-06-03 18:48:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:33,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:35,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:35,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143485112] [2024-06-03 18:48:35,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143485112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:35,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:35,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:35,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625860331] [2024-06-03 18:48:35,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:35,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:35,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:35,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:35,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:35,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 375 transitions, 3815 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:35,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:35,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:35,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:36,655 INFO L124 PetriNetUnfolderBase]: 1183/2239 cut-off events. [2024-06-03 18:48:36,655 INFO L125 PetriNetUnfolderBase]: For 323046/323046 co-relation queries the response was YES. [2024-06-03 18:48:36,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14754 conditions, 2239 events. 1183/2239 cut-off events. For 323046/323046 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14156 event pairs, 273 based on Foata normal form. 2/2241 useless extension candidates. Maximal degree in co-relation 14544. Up to 1935 conditions per place. [2024-06-03 18:48:36,685 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 313 selfloop transitions, 82 changer transitions 0/397 dead transitions. [2024-06-03 18:48:36,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 397 transitions, 4737 flow [2024-06-03 18:48:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 18:48:36,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-03 18:48:36,686 INFO L175 Difference]: Start difference. First operand has 498 places, 375 transitions, 3815 flow. Second operand 11 states and 126 transitions. [2024-06-03 18:48:36,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 397 transitions, 4737 flow [2024-06-03 18:48:38,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 397 transitions, 4585 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-03 18:48:38,410 INFO L231 Difference]: Finished difference. Result has 500 places, 376 transitions, 3897 flow [2024-06-03 18:48:38,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3663, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3897, PETRI_PLACES=500, PETRI_TRANSITIONS=376} [2024-06-03 18:48:38,410 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-03 18:48:38,410 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 376 transitions, 3897 flow [2024-06-03 18:48:38,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:38,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:38,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:38,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-03 18:48:38,411 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:38,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash 294590340, now seen corresponding path program 43 times [2024-06-03 18:48:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563606627] [2024-06-03 18:48:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:40,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:40,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563606627] [2024-06-03 18:48:40,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563606627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:40,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:40,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:40,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848892694] [2024-06-03 18:48:40,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:40,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:40,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:40,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:40,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:40,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:40,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 376 transitions, 3897 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:40,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:40,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:40,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:41,436 INFO L124 PetriNetUnfolderBase]: 1187/2247 cut-off events. [2024-06-03 18:48:41,436 INFO L125 PetriNetUnfolderBase]: For 328682/328682 co-relation queries the response was YES. [2024-06-03 18:48:41,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14935 conditions, 2247 events. 1187/2247 cut-off events. For 328682/328682 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 14200 event pairs, 297 based on Foata normal form. 2/2249 useless extension candidates. Maximal degree in co-relation 14724. Up to 2064 conditions per place. [2024-06-03 18:48:41,471 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 345 selfloop transitions, 47 changer transitions 0/394 dead transitions. [2024-06-03 18:48:41,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 394 transitions, 4787 flow [2024-06-03 18:48:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 18:48:41,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-03 18:48:41,472 INFO L175 Difference]: Start difference. First operand has 500 places, 376 transitions, 3897 flow. Second operand 11 states and 115 transitions. [2024-06-03 18:48:41,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 394 transitions, 4787 flow [2024-06-03 18:48:43,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 394 transitions, 4563 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-03 18:48:43,315 INFO L231 Difference]: Finished difference. Result has 502 places, 377 transitions, 3837 flow [2024-06-03 18:48:43,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3837, PETRI_PLACES=502, PETRI_TRANSITIONS=377} [2024-06-03 18:48:43,315 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-03 18:48:43,315 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 377 transitions, 3837 flow [2024-06-03 18:48:43,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:43,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:43,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:43,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-03 18:48:43,315 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:43,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1295123024, now seen corresponding path program 44 times [2024-06-03 18:48:43,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:43,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554949009] [2024-06-03 18:48:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:43,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:45,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:45,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554949009] [2024-06-03 18:48:45,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554949009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:45,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:45,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:45,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406594055] [2024-06-03 18:48:45,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:45,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:45,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:45,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:45,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 377 transitions, 3837 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:45,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:45,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:45,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:46,166 INFO L124 PetriNetUnfolderBase]: 1191/2255 cut-off events. [2024-06-03 18:48:46,166 INFO L125 PetriNetUnfolderBase]: For 328470/328470 co-relation queries the response was YES. [2024-06-03 18:48:46,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14862 conditions, 2255 events. 1191/2255 cut-off events. For 328470/328470 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14259 event pairs, 291 based on Foata normal form. 2/2257 useless extension candidates. Maximal degree in co-relation 14650. Up to 2033 conditions per place. [2024-06-03 18:48:46,200 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 334 selfloop transitions, 61 changer transitions 0/397 dead transitions. [2024-06-03 18:48:46,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 397 transitions, 4749 flow [2024-06-03 18:48:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 18:48:46,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-03 18:48:46,201 INFO L175 Difference]: Start difference. First operand has 502 places, 377 transitions, 3837 flow. Second operand 11 states and 122 transitions. [2024-06-03 18:48:46,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 397 transitions, 4749 flow [2024-06-03 18:48:47,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 397 transitions, 4597 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-03 18:48:47,940 INFO L231 Difference]: Finished difference. Result has 504 places, 378 transitions, 3878 flow [2024-06-03 18:48:47,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3878, PETRI_PLACES=504, PETRI_TRANSITIONS=378} [2024-06-03 18:48:47,940 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-03 18:48:47,940 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 378 transitions, 3878 flow [2024-06-03 18:48:47,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:47,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:47,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:47,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-03 18:48:47,940 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:47,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1295117444, now seen corresponding path program 45 times [2024-06-03 18:48:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:47,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689286744] [2024-06-03 18:48:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:47,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:49,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:49,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689286744] [2024-06-03 18:48:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689286744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:49,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:49,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892358753] [2024-06-03 18:48:49,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:49,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:50,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:50,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 378 transitions, 3878 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:50,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:50,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:50,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:50,893 INFO L124 PetriNetUnfolderBase]: 1195/2263 cut-off events. [2024-06-03 18:48:50,893 INFO L125 PetriNetUnfolderBase]: For 334096/334096 co-relation queries the response was YES. [2024-06-03 18:48:50,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14977 conditions, 2263 events. 1195/2263 cut-off events. For 334096/334096 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 14346 event pairs, 291 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 14764. Up to 2049 conditions per place. [2024-06-03 18:48:50,927 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 338 selfloop transitions, 58 changer transitions 0/398 dead transitions. [2024-06-03 18:48:50,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 398 transitions, 4792 flow [2024-06-03 18:48:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 18:48:50,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:48:50,928 INFO L175 Difference]: Start difference. First operand has 504 places, 378 transitions, 3878 flow. Second operand 11 states and 121 transitions. [2024-06-03 18:48:50,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 398 transitions, 4792 flow [2024-06-03 18:48:52,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 398 transitions, 4611 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-03 18:48:52,862 INFO L231 Difference]: Finished difference. Result has 506 places, 379 transitions, 3885 flow [2024-06-03 18:48:52,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3885, PETRI_PLACES=506, PETRI_TRANSITIONS=379} [2024-06-03 18:48:52,862 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-03 18:48:52,862 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 379 transitions, 3885 flow [2024-06-03 18:48:52,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:52,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:52,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:52,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-03 18:48:52,863 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:52,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash -941937796, now seen corresponding path program 46 times [2024-06-03 18:48:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:52,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711938632] [2024-06-03 18:48:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:48:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:48:55,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:48:55,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711938632] [2024-06-03 18:48:55,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711938632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:48:55,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:48:55,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:48:55,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685705767] [2024-06-03 18:48:55,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:48:55,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:48:55,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:48:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:48:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:48:55,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:48:55,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 379 transitions, 3885 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:55,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:48:55,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:48:55,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:48:56,183 INFO L124 PetriNetUnfolderBase]: 1199/2271 cut-off events. [2024-06-03 18:48:56,183 INFO L125 PetriNetUnfolderBase]: For 339615/339615 co-relation queries the response was YES. [2024-06-03 18:48:56,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15046 conditions, 2271 events. 1199/2271 cut-off events. For 339615/339615 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 14430 event pairs, 259 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 14832. Up to 1951 conditions per place. [2024-06-03 18:48:56,231 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 312 selfloop transitions, 87 changer transitions 0/401 dead transitions. [2024-06-03 18:48:56,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 401 transitions, 4821 flow [2024-06-03 18:48:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:48:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:48:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 18:48:56,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-03 18:48:56,232 INFO L175 Difference]: Start difference. First operand has 506 places, 379 transitions, 3885 flow. Second operand 11 states and 125 transitions. [2024-06-03 18:48:56,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 401 transitions, 4821 flow [2024-06-03 18:48:58,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 401 transitions, 4643 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-03 18:48:58,189 INFO L231 Difference]: Finished difference. Result has 508 places, 380 transitions, 3955 flow [2024-06-03 18:48:58,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3955, PETRI_PLACES=508, PETRI_TRANSITIONS=380} [2024-06-03 18:48:58,190 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-03 18:48:58,190 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 380 transitions, 3955 flow [2024-06-03 18:48:58,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:48:58,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:48:58,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:48:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-03 18:48:58,190 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:48:58,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:48:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1248224098, now seen corresponding path program 16 times [2024-06-03 18:48:58,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:48:58,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249234715] [2024-06-03 18:48:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:48:58,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:48:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:49:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:49:00,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:49:00,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249234715] [2024-06-03 18:49:00,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249234715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:49:00,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:49:00,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:49:00,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765324255] [2024-06-03 18:49:00,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:49:00,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:49:00,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:49:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:49:00,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:49:00,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:49:00,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 380 transitions, 3955 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:00,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:49:00,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:49:00,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:49:01,949 INFO L124 PetriNetUnfolderBase]: 1221/2317 cut-off events. [2024-06-03 18:49:01,949 INFO L125 PetriNetUnfolderBase]: For 408402/408402 co-relation queries the response was YES. [2024-06-03 18:49:01,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15245 conditions, 2317 events. 1221/2317 cut-off events. For 408402/408402 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 14772 event pairs, 279 based on Foata normal form. 10/2327 useless extension candidates. Maximal degree in co-relation 15030. Up to 1920 conditions per place. [2024-06-03 18:49:01,980 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 308 selfloop transitions, 88 changer transitions 12/410 dead transitions. [2024-06-03 18:49:01,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 410 transitions, 4913 flow [2024-06-03 18:49:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:49:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:49:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-03 18:49:01,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-03 18:49:01,981 INFO L175 Difference]: Start difference. First operand has 508 places, 380 transitions, 3955 flow. Second operand 12 states and 140 transitions. [2024-06-03 18:49:01,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 410 transitions, 4913 flow [2024-06-03 18:49:03,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 410 transitions, 4675 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-03 18:49:03,853 INFO L231 Difference]: Finished difference. Result has 511 places, 378 transitions, 3877 flow [2024-06-03 18:49:03,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3877, PETRI_PLACES=511, PETRI_TRANSITIONS=378} [2024-06-03 18:49:03,853 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-03 18:49:03,854 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 378 transitions, 3877 flow [2024-06-03 18:49:03,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:03,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:49:03,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:49:03,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-03 18:49:03,854 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:49:03,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:49:03,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1627588544, now seen corresponding path program 17 times [2024-06-03 18:49:03,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:49:03,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097555433] [2024-06-03 18:49:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:49:03,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:49:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:49:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:49:05,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:49:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097555433] [2024-06-03 18:49:05,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097555433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:49:05,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:49:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:49:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439140366] [2024-06-03 18:49:05,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:49:05,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:49:05,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:49:05,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:49:05,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:49:05,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:49:05,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 378 transitions, 3877 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:05,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:49:05,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:49:05,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:49:06,580 INFO L124 PetriNetUnfolderBase]: 1211/2303 cut-off events. [2024-06-03 18:49:06,580 INFO L125 PetriNetUnfolderBase]: For 412491/412491 co-relation queries the response was YES. [2024-06-03 18:49:06,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15098 conditions, 2303 events. 1211/2303 cut-off events. For 412491/412491 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 14713 event pairs, 309 based on Foata normal form. 10/2313 useless extension candidates. Maximal degree in co-relation 14882. Up to 2066 conditions per place. [2024-06-03 18:49:06,616 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 337 selfloop transitions, 46 changer transitions 16/401 dead transitions. [2024-06-03 18:49:06,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 401 transitions, 4777 flow [2024-06-03 18:49:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:49:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:49:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-03 18:49:06,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33080808080808083 [2024-06-03 18:49:06,617 INFO L175 Difference]: Start difference. First operand has 511 places, 378 transitions, 3877 flow. Second operand 12 states and 131 transitions. [2024-06-03 18:49:06,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 401 transitions, 4777 flow [2024-06-03 18:49:08,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 401 transitions, 4599 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 18:49:08,607 INFO L231 Difference]: Finished difference. Result has 511 places, 372 transitions, 3754 flow [2024-06-03 18:49:08,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3754, PETRI_PLACES=511, PETRI_TRANSITIONS=372} [2024-06-03 18:49:08,607 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-03 18:49:08,607 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 372 transitions, 3754 flow [2024-06-03 18:49:08,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:08,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:49:08,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:49:08,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-03 18:49:08,608 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:49:08,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:49:08,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1615369204, now seen corresponding path program 47 times [2024-06-03 18:49:08,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:49:08,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592689123] [2024-06-03 18:49:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:49:08,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:49:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:49:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:49:10,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:49:10,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592689123] [2024-06-03 18:49:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592689123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:49:10,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:49:10,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:49:10,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342478970] [2024-06-03 18:49:10,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:49:10,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:49:10,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:49:10,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:49:10,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:49:10,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:49:10,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 372 transitions, 3754 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:10,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:49:10,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:49:10,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:49:11,416 INFO L124 PetriNetUnfolderBase]: 1179/2243 cut-off events. [2024-06-03 18:49:11,416 INFO L125 PetriNetUnfolderBase]: For 347938/347938 co-relation queries the response was YES. [2024-06-03 18:49:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14846 conditions, 2243 events. 1179/2243 cut-off events. For 347938/347938 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 14274 event pairs, 283 based on Foata normal form. 2/2245 useless extension candidates. Maximal degree in co-relation 14630. Up to 1951 conditions per place. [2024-06-03 18:49:11,454 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 315 selfloop transitions, 76 changer transitions 0/393 dead transitions. [2024-06-03 18:49:11,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 393 transitions, 4670 flow [2024-06-03 18:49:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:49:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:49:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 18:49:11,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-03 18:49:11,455 INFO L175 Difference]: Start difference. First operand has 511 places, 372 transitions, 3754 flow. Second operand 11 states and 126 transitions. [2024-06-03 18:49:11,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 393 transitions, 4670 flow [2024-06-03 18:49:13,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 393 transitions, 4564 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-03 18:49:13,530 INFO L231 Difference]: Finished difference. Result has 504 places, 373 transitions, 3877 flow [2024-06-03 18:49:13,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3650, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3877, PETRI_PLACES=504, PETRI_TRANSITIONS=373} [2024-06-03 18:49:13,531 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-03 18:49:13,531 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 373 transitions, 3877 flow [2024-06-03 18:49:13,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:13,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:49:13,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:49:13,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-03 18:49:13,531 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:49:13,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:49:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash -941943376, now seen corresponding path program 48 times [2024-06-03 18:49:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:49:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269478497] [2024-06-03 18:49:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:49:13,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:49:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:49:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:49:15,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:49:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269478497] [2024-06-03 18:49:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269478497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:49:15,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:49:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:49:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864627624] [2024-06-03 18:49:15,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:49:15,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:49:15,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:49:15,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:49:15,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:49:15,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:49:15,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 373 transitions, 3877 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:15,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:49:15,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:49:15,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:49:16,301 INFO L124 PetriNetUnfolderBase]: 1183/2251 cut-off events. [2024-06-03 18:49:16,302 INFO L125 PetriNetUnfolderBase]: For 334720/334720 co-relation queries the response was YES. [2024-06-03 18:49:16,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14943 conditions, 2251 events. 1183/2251 cut-off events. For 334720/334720 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14374 event pairs, 263 based on Foata normal form. 2/2253 useless extension candidates. Maximal degree in co-relation 14730. Up to 1449 conditions per place. [2024-06-03 18:49:16,336 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 251 selfloop transitions, 142 changer transitions 0/395 dead transitions. [2024-06-03 18:49:16,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 395 transitions, 4801 flow [2024-06-03 18:49:16,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:49:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:49:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 18:49:16,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-03 18:49:16,338 INFO L175 Difference]: Start difference. First operand has 504 places, 373 transitions, 3877 flow. Second operand 11 states and 130 transitions. [2024-06-03 18:49:16,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 395 transitions, 4801 flow [2024-06-03 18:49:18,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 395 transitions, 4582 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-03 18:49:18,302 INFO L231 Difference]: Finished difference. Result has 505 places, 374 transitions, 4018 flow [2024-06-03 18:49:18,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3658, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4018, PETRI_PLACES=505, PETRI_TRANSITIONS=374} [2024-06-03 18:49:18,303 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-03 18:49:18,303 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 374 transitions, 4018 flow [2024-06-03 18:49:18,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:18,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:49:18,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:49:18,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-03 18:49:18,303 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:49:18,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:49:18,304 INFO L85 PathProgramCache]: Analyzing trace with hash -941728050, now seen corresponding path program 18 times [2024-06-03 18:49:18,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:49:18,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893770787] [2024-06-03 18:49:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:49:18,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:49:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:49:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:49:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:49:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893770787] [2024-06-03 18:49:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893770787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:49:20,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:49:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:49:20,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068166480] [2024-06-03 18:49:20,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:49:20,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:49:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:49:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:49:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:49:20,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:49:20,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 374 transitions, 4018 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:20,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:49:20,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:49:20,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:49:21,191 INFO L124 PetriNetUnfolderBase]: 1207/2307 cut-off events. [2024-06-03 18:49:21,191 INFO L125 PetriNetUnfolderBase]: For 454673/454673 co-relation queries the response was YES. [2024-06-03 18:49:21,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15193 conditions, 2307 events. 1207/2307 cut-off events. For 454673/454673 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14779 event pairs, 263 based on Foata normal form. 16/2323 useless extension candidates. Maximal degree in co-relation 14980. Up to 1891 conditions per place. [2024-06-03 18:49:21,229 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 298 selfloop transitions, 85 changer transitions 16/401 dead transitions. [2024-06-03 18:49:21,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 401 transitions, 4936 flow [2024-06-03 18:49:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:49:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:49:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 18:49:21,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-03 18:49:21,230 INFO L175 Difference]: Start difference. First operand has 505 places, 374 transitions, 4018 flow. Second operand 12 states and 139 transitions. [2024-06-03 18:49:21,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 401 transitions, 4936 flow [2024-06-03 18:49:23,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 401 transitions, 4586 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-03 18:49:23,281 INFO L231 Difference]: Finished difference. Result has 508 places, 368 transitions, 3801 flow [2024-06-03 18:49:23,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3801, PETRI_PLACES=508, PETRI_TRANSITIONS=368} [2024-06-03 18:49:23,281 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-03 18:49:23,281 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 368 transitions, 3801 flow [2024-06-03 18:49:23,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:23,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:49:23,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:49:23,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-03 18:49:23,281 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:49:23,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:49:23,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1814820724, now seen corresponding path program 49 times [2024-06-03 18:49:23,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:49:23,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431899453] [2024-06-03 18:49:23,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:49:23,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:49:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:49:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:49:24,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:49:24,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431899453] [2024-06-03 18:49:24,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431899453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:49:24,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:49:24,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:49:24,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074841247] [2024-06-03 18:49:24,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:49:24,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:49:24,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:49:24,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:49:24,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:49:25,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:49:25,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 368 transitions, 3801 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:25,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:49:25,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:49:25,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:49:25,965 INFO L124 PetriNetUnfolderBase]: 1167/2227 cut-off events. [2024-06-03 18:49:25,965 INFO L125 PetriNetUnfolderBase]: For 342666/342666 co-relation queries the response was YES. [2024-06-03 18:49:25,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14802 conditions, 2227 events. 1167/2227 cut-off events. For 342666/342666 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 14190 event pairs, 297 based on Foata normal form. 2/2229 useless extension candidates. Maximal degree in co-relation 14588. Up to 2013 conditions per place. [2024-06-03 18:49:26,002 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 330 selfloop transitions, 56 changer transitions 0/388 dead transitions. [2024-06-03 18:49:26,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 388 transitions, 4699 flow [2024-06-03 18:49:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:49:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:49:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 18:49:26,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-03 18:49:26,003 INFO L175 Difference]: Start difference. First operand has 508 places, 368 transitions, 3801 flow. Second operand 11 states and 120 transitions. [2024-06-03 18:49:26,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 388 transitions, 4699 flow [2024-06-03 18:49:28,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 388 transitions, 4515 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-03 18:49:28,017 INFO L231 Difference]: Finished difference. Result has 501 places, 369 transitions, 3807 flow [2024-06-03 18:49:28,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3619, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3807, PETRI_PLACES=501, PETRI_TRANSITIONS=369} [2024-06-03 18:49:28,017 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-03 18:49:28,017 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 369 transitions, 3807 flow [2024-06-03 18:49:28,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:28,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:49:28,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:49:28,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-03 18:49:28,017 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:49:28,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:49:28,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1615374784, now seen corresponding path program 50 times [2024-06-03 18:49:28,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:49:28,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957569148] [2024-06-03 18:49:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:49:28,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:49:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:49:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:49:29,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:49:29,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957569148] [2024-06-03 18:49:29,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957569148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:49:29,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:49:29,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:49:29,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16972783] [2024-06-03 18:49:29,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:49:29,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:49:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:49:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:49:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:49:30,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:49:30,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 369 transitions, 3807 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:30,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:49:30,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:49:30,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:49:30,978 INFO L124 PetriNetUnfolderBase]: 1171/2234 cut-off events. [2024-06-03 18:49:30,979 INFO L125 PetriNetUnfolderBase]: For 334772/334772 co-relation queries the response was YES. [2024-06-03 18:49:31,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14801 conditions, 2234 events. 1171/2234 cut-off events. For 334772/334772 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14268 event pairs, 286 based on Foata normal form. 2/2236 useless extension candidates. Maximal degree in co-relation 14589. Up to 1990 conditions per place. [2024-06-03 18:49:31,008 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 69 changer transitions 0/392 dead transitions. [2024-06-03 18:49:31,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 392 transitions, 4734 flow [2024-06-03 18:49:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:49:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:49:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 18:49:31,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-03 18:49:31,009 INFO L175 Difference]: Start difference. First operand has 501 places, 369 transitions, 3807 flow. Second operand 12 states and 133 transitions. [2024-06-03 18:49:31,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 392 transitions, 4734 flow [2024-06-03 18:49:32,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 392 transitions, 4556 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-03 18:49:32,737 INFO L231 Difference]: Finished difference. Result has 504 places, 370 transitions, 3845 flow [2024-06-03 18:49:32,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3845, PETRI_PLACES=504, PETRI_TRANSITIONS=370} [2024-06-03 18:49:32,737 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-03 18:49:32,738 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 370 transitions, 3845 flow [2024-06-03 18:49:32,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:32,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:49:32,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:49:32,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-03 18:49:32,738 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:49:32,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:49:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash 354987698, now seen corresponding path program 51 times [2024-06-03 18:49:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:49:32,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372680230] [2024-06-03 18:49:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:49:32,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:49:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:49:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:49:34,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:49:34,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372680230] [2024-06-03 18:49:34,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372680230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:49:34,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:49:34,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 18:49:34,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933894655] [2024-06-03 18:49:34,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:49:34,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 18:49:34,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:49:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 18:49:34,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 18:49:34,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:49:34,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 370 transitions, 3845 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:34,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:49:34,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:49:34,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:49:35,311 INFO L124 PetriNetUnfolderBase]: 1175/2243 cut-off events. [2024-06-03 18:49:35,311 INFO L125 PetriNetUnfolderBase]: For 340292/340292 co-relation queries the response was YES. [2024-06-03 18:49:35,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14908 conditions, 2243 events. 1175/2243 cut-off events. For 340292/340292 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 14317 event pairs, 263 based on Foata normal form. 2/2245 useless extension candidates. Maximal degree in co-relation 14695. Up to 1937 conditions per place. [2024-06-03 18:49:35,345 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 304 selfloop transitions, 84 changer transitions 0/390 dead transitions. [2024-06-03 18:49:35,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 390 transitions, 4755 flow [2024-06-03 18:49:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:49:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:49:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 18:49:35,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 18:49:35,345 INFO L175 Difference]: Start difference. First operand has 504 places, 370 transitions, 3845 flow. Second operand 11 states and 121 transitions. [2024-06-03 18:49:35,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 390 transitions, 4755 flow [2024-06-03 18:49:37,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 390 transitions, 4549 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-03 18:49:37,305 INFO L231 Difference]: Finished difference. Result has 505 places, 371 transitions, 3887 flow [2024-06-03 18:49:37,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3639, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3887, PETRI_PLACES=505, PETRI_TRANSITIONS=371} [2024-06-03 18:49:37,305 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-03 18:49:37,305 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 371 transitions, 3887 flow [2024-06-03 18:49:37,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:37,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:49:37,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:49:37,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-03 18:49:37,305 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:49:37,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:49:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 354982118, now seen corresponding path program 52 times [2024-06-03 18:49:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:49:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964799208] [2024-06-03 18:49:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:49:37,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:49:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:49:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:49:39,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:49:39,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964799208] [2024-06-03 18:49:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964799208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:49:39,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:49:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 18:49:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930567824] [2024-06-03 18:49:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:49:39,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 18:49:39,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:49:39,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 18:49:39,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 18:49:39,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-03 18:49:39,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 371 transitions, 3887 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:39,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:49:39,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-03 18:49:39,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:49:40,438 INFO L124 PetriNetUnfolderBase]: 1179/2251 cut-off events. [2024-06-03 18:49:40,438 INFO L125 PetriNetUnfolderBase]: For 345840/345840 co-relation queries the response was YES. [2024-06-03 18:49:40,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15032 conditions, 2251 events. 1179/2251 cut-off events. For 345840/345840 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 14397 event pairs, 263 based on Foata normal form. 2/2253 useless extension candidates. Maximal degree in co-relation 14818. Up to 1931 conditions per place. [2024-06-03 18:49:40,473 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 304 selfloop transitions, 85 changer transitions 0/391 dead transitions. [2024-06-03 18:49:40,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 391 transitions, 4799 flow [2024-06-03 18:49:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 18:49:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 18:49:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 18:49:40,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-03 18:49:40,474 INFO L175 Difference]: Start difference. First operand has 505 places, 371 transitions, 3887 flow. Second operand 11 states and 122 transitions. [2024-06-03 18:49:40,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 391 transitions, 4799 flow [2024-06-03 18:49:42,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 391 transitions, 4561 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-03 18:49:42,346 INFO L231 Difference]: Finished difference. Result has 507 places, 372 transitions, 3901 flow [2024-06-03 18:49:42,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3901, PETRI_PLACES=507, PETRI_TRANSITIONS=372} [2024-06-03 18:49:42,346 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-03 18:49:42,346 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 372 transitions, 3901 flow [2024-06-03 18:49:42,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:49:42,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:49:42,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:49:42,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-03 18:49:42,346 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:49:42,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:49:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1607740848, now seen corresponding path program 19 times [2024-06-03 18:49:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:49:42,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941341072] [2024-06-03 18:49:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:49:42,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:49:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15