./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.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/rfi001_power.oepc_pso.oepc_rmo.oepc.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/rfi001_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/rfi001_power.oepc_pso.oepc_rmo.oepc.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 [2024-06-04 15:24:31,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:24:31,418 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:24:31,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:24:31,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:24:31,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:24:31,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:24:31,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:24:31,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:24:31,457 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:24:31,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:24:31,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:24:31,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:24:31,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:24:31,459 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:24:31,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:24:31,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:24:31,459 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:24:31,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:24:31,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:24:31,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:24:31,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:24:31,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:24:31,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:24:31,460 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:24:31,461 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:24:31,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:24:31,461 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:24:31,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:24:31,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:24:31,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:24:31,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:24:31,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:24:31,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:24:31,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:24:31,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:24:31,463 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:24:31,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:24:31,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:24:31,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:24:31,463 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:24:31,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:24:31,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:24:31,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:24:31,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:24:31,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:24:31,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:24:31,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:24:31,644 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:24:31,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:24:32,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:24:32,850 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:24:32,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:24:32,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51bab18c7/128027955cd14efa9803c70422a8a838/FLAG62331ef18 [2024-06-04 15:24:32,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51bab18c7/128027955cd14efa9803c70422a8a838 [2024-06-04 15:24:32,895 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:24:32,896 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:24:32,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-04 15:24:32,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:24:32,986 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:24:32,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:24:32,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:24:32,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:24:32,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:24:32" (1/2) ... [2024-06-04 15:24:32,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf10d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:24:32, skipping insertion in model container [2024-06-04 15:24:32,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:24:32" (1/2) ... [2024-06-04 15:24:32,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7263a863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:24:32, skipping insertion in model container [2024-06-04 15:24:32,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:24:32" (2/2) ... [2024-06-04 15:24:32,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf10d87 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:32, skipping insertion in model container [2024-06-04 15:24:32,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:24:32" (2/2) ... [2024-06-04 15:24:32,996 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:24:33,044 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:24:33,045 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-06-04 15:24:33,046 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-06-04 15:24:33,046 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:24:33,046 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-04 15:24:33,084 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:24:33,405 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:24:33,412 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:24:33,502 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:24:33,526 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:24:33,526 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33 WrapperNode [2024-06-04 15:24:33,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:24:33,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:24:33,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:24:33,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:24:33,532 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 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,544 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 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,570 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-04 15:24:33,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:24:33,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:24:33,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:24:33,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:24:33,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,582 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,593 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]. [2024-06-04 15:24:33,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:24:33,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:24:33,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:24:33,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:24:33,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (1/1) ... [2024-06-04 15:24:33,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:24:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:24:33,634 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) [2024-06-04 15:24:33,642 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 [2024-06-04 15:24:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:24:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:24:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:24:33,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:24:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:24:33,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:24:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:24:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:24:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:24:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:24:33,671 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:24:33,777 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:24:33,779 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:24:34,078 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:24:34,078 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:24:34,196 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:24:34,197 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:24:34,199 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:24:34 BoogieIcfgContainer [2024-06-04 15:24:34,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:24:34,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:24:34,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:24:34,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:24:34,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:24:32" (1/4) ... [2024-06-04 15:24:34,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b3a0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:24:34, skipping insertion in model container [2024-06-04 15:24:34,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:24:32" (2/4) ... [2024-06-04 15:24:34,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b3a0e3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:24:34, skipping insertion in model container [2024-06-04 15:24:34,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:24:33" (3/4) ... [2024-06-04 15:24:34,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b3a0e3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:24:34, skipping insertion in model container [2024-06-04 15:24:34,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:24:34" (4/4) ... [2024-06-04 15:24:34,210 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:24:34,223 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:24:34,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:24:34,223 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:24:34,259 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:24:34,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:24:34,312 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 15:24:34,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:24:34,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:24:34,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:24:34,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 15:24:34,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:24:34,342 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;@7806321, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:24:34,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:24:34,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:24:34,346 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:24:34,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:24:34,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:34,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:24:34,347 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)] === [2024-06-04 15:24:34,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1710069081, now seen corresponding path program 1 times [2024-06-04 15:24:34,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:34,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098461150] [2024-06-04 15:24:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:34,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:35,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:35,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098461150] [2024-06-04 15:24:35,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098461150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:35,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:35,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:24:35,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219810369] [2024-06-04 15:24:35,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:35,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:24:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:24:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:24:35,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:24:35,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:35,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:35,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:24:35,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:35,440 INFO L124 PetriNetUnfolderBase]: 189/352 cut-off events. [2024-06-04 15:24:35,440 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 15:24:35,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 352 events. 189/352 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1280 event pairs, 115 based on Foata normal form. 1/339 useless extension candidates. Maximal degree in co-relation 696. Up to 333 conditions per place. [2024-06-04 15:24:35,445 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 24 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 15:24:35,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 123 flow [2024-06-04 15:24:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:24:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:24:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-04 15:24:35,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-04 15:24:35,455 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 53 transitions. [2024-06-04 15:24:35,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 123 flow [2024-06-04 15:24:35,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:24:35,458 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 15:24:35,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 15:24:35,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 15:24:35,463 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 15:24:35,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:35,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:35,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:35,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:24:35,467 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)] === [2024-06-04 15:24:35,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:35,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1595404566, now seen corresponding path program 1 times [2024-06-04 15:24:35,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:35,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859965252] [2024-06-04 15:24:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:35,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859965252] [2024-06-04 15:24:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859965252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:35,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:35,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:24:35,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620967322] [2024-06-04 15:24:35,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:35,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:24:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:24:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:24:35,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:24:35,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:35,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:35,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:24:35,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:36,050 INFO L124 PetriNetUnfolderBase]: 186/349 cut-off events. [2024-06-04 15:24:36,050 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-04 15:24:36,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 349 events. 186/349 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1264 event pairs, 94 based on Foata normal form. 2/343 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-04 15:24:36,055 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 15:24:36,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2024-06-04 15:24:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:24:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:24:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-04 15:24:36,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-04 15:24:36,058 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 67 transitions. [2024-06-04 15:24:36,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2024-06-04 15:24:36,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:24:36,062 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 15:24:36,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 15:24:36,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 15:24:36,063 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 15:24:36,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:36,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:36,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:24:36,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:24:36,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:36,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2061510898, now seen corresponding path program 1 times [2024-06-04 15:24:36,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:36,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321650606] [2024-06-04 15:24:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:36,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:36,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321650606] [2024-06-04 15:24:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321650606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:36,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:24:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124207236] [2024-06-04 15:24:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:36,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:24:36,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:24:36,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:24:36,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:24:36,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:36,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:36,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:24:36,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:36,679 INFO L124 PetriNetUnfolderBase]: 187/355 cut-off events. [2024-06-04 15:24:36,679 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-04 15:24:36,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 355 events. 187/355 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1295 event pairs, 67 based on Foata normal form. 3/356 useless extension candidates. Maximal degree in co-relation 868. Up to 293 conditions per place. [2024-06-04 15:24:36,681 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-04 15:24:36,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 257 flow [2024-06-04 15:24:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:24:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:24:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-04 15:24:36,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-06-04 15:24:36,685 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 87 transitions. [2024-06-04 15:24:36,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 257 flow [2024-06-04 15:24:36,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 248 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 15:24:36,687 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-04 15:24:36,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-06-04 15:24:36,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-04 15:24:36,689 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-04 15:24:36,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:36,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:36,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:36,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:24:36,689 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)] === [2024-06-04 15:24:36,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:36,690 INFO L85 PathProgramCache]: Analyzing trace with hash -517670889, now seen corresponding path program 1 times [2024-06-04 15:24:36,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:36,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513162698] [2024-06-04 15:24:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:36,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:37,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:37,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513162698] [2024-06-04 15:24:37,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513162698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:37,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:37,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:24:37,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943881798] [2024-06-04 15:24:37,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:37,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:24:37,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:37,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:24:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:24:37,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:24:37,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:37,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:37,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:24:37,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:37,568 INFO L124 PetriNetUnfolderBase]: 188/357 cut-off events. [2024-06-04 15:24:37,569 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-04 15:24:37,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 357 events. 188/357 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1315 event pairs, 46 based on Foata normal form. 3/358 useless extension candidates. Maximal degree in co-relation 1042. Up to 282 conditions per place. [2024-06-04 15:24:37,571 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2024-06-04 15:24:37,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 342 flow [2024-06-04 15:24:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:24:37,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:24:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-04 15:24:37,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-04 15:24:37,573 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 102 transitions. [2024-06-04 15:24:37,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 342 flow [2024-06-04 15:24:37,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 338 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-04 15:24:37,575 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 216 flow [2024-06-04 15:24:37,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-04 15:24:37,576 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-04 15:24:37,576 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 216 flow [2024-06-04 15:24:37,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:37,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:37,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:37,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:24:37,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:24:37,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1132072369, now seen corresponding path program 1 times [2024-06-04 15:24:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168012732] [2024-06-04 15:24:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:37,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:38,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:38,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168012732] [2024-06-04 15:24:38,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168012732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:38,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:38,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:24:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047312846] [2024-06-04 15:24:38,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:38,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:24:38,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:24:38,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:24:38,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:24:38,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:38,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:38,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:24:38,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:38,465 INFO L124 PetriNetUnfolderBase]: 189/360 cut-off events. [2024-06-04 15:24:38,466 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-04 15:24:38,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 360 events. 189/360 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1329 event pairs, 24 based on Foata normal form. 6/364 useless extension candidates. Maximal degree in co-relation 1172. Up to 259 conditions per place. [2024-06-04 15:24:38,468 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-04 15:24:38,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 388 flow [2024-06-04 15:24:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-04 15:24:38,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 15:24:38,471 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 216 flow. Second operand 7 states and 112 transitions. [2024-06-04 15:24:38,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 388 flow [2024-06-04 15:24:38,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:24:38,474 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 219 flow [2024-06-04 15:24:38,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-04 15:24:38,475 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 15:24:38,475 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 219 flow [2024-06-04 15:24:38,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:38,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:38,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:38,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:24:38,476 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)] === [2024-06-04 15:24:38,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:38,477 INFO L85 PathProgramCache]: Analyzing trace with hash 889308452, now seen corresponding path program 1 times [2024-06-04 15:24:38,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:38,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382487705] [2024-06-04 15:24:38,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:38,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:38,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:38,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382487705] [2024-06-04 15:24:38,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382487705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:38,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:38,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:24:38,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884726501] [2024-06-04 15:24:38,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:38,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:24:38,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:38,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:24:38,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:24:38,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:24:38,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-04 15:24:38,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:38,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:24:38,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:39,160 INFO L124 PetriNetUnfolderBase]: 187/356 cut-off events. [2024-06-04 15:24:39,161 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-04 15:24:39,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 356 events. 187/356 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1301 event pairs, 47 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 1217. Up to 329 conditions per place. [2024-06-04 15:24:39,164 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 35 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2024-06-04 15:24:39,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 313 flow [2024-06-04 15:24:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:24:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:24:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-06-04 15:24:39,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:24:39,165 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 219 flow. Second operand 5 states and 65 transitions. [2024-06-04 15:24:39,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 313 flow [2024-06-04 15:24:39,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 272 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 15:24:39,168 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 195 flow [2024-06-04 15:24:39,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-04 15:24:39,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 15:24:39,170 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 195 flow [2024-06-04 15:24:39,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-04 15:24:39,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:39,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:39,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:24:39,171 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)] === [2024-06-04 15:24:39,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:39,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1770131004, now seen corresponding path program 1 times [2024-06-04 15:24:39,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:39,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529802787] [2024-06-04 15:24:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:39,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:39,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529802787] [2024-06-04 15:24:39,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529802787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:39,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:24:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621823757] [2024-06-04 15:24:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:39,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:24:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:24:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:24:39,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:39,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:39,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:39,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:39,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:39,919 INFO L124 PetriNetUnfolderBase]: 212/383 cut-off events. [2024-06-04 15:24:39,919 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2024-06-04 15:24:39,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 383 events. 212/383 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1348 event pairs, 55 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1300. Up to 368 conditions per place. [2024-06-04 15:24:39,922 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-04 15:24:39,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 307 flow [2024-06-04 15:24:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:24:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:24:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-04 15:24:39,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:24:39,923 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 195 flow. Second operand 6 states and 70 transitions. [2024-06-04 15:24:39,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 307 flow [2024-06-04 15:24:39,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 292 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 15:24:39,926 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 213 flow [2024-06-04 15:24:39,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-04 15:24:39,926 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-04 15:24:39,926 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 213 flow [2024-06-04 15:24:39,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:39,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:39,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:39,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:24:39,927 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)] === [2024-06-04 15:24:39,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:39,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1361521897, now seen corresponding path program 1 times [2024-06-04 15:24:39,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:39,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80319347] [2024-06-04 15:24:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:39,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:40,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:40,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80319347] [2024-06-04 15:24:40,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80319347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:40,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:40,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:24:40,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024391820] [2024-06-04 15:24:40,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:40,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:24:40,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:40,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:24:40,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:24:40,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:24:40,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:40,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:40,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:24:40,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:40,605 INFO L124 PetriNetUnfolderBase]: 197/369 cut-off events. [2024-06-04 15:24:40,605 INFO L125 PetriNetUnfolderBase]: For 1312/1312 co-relation queries the response was YES. [2024-06-04 15:24:40,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 369 events. 197/369 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1348 event pairs, 51 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1323. Up to 306 conditions per place. [2024-06-04 15:24:40,607 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-04 15:24:40,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 362 flow [2024-06-04 15:24:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:24:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:24:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-04 15:24:40,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-04 15:24:40,608 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 213 flow. Second operand 6 states and 83 transitions. [2024-06-04 15:24:40,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 362 flow [2024-06-04 15:24:40,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:24:40,610 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 244 flow [2024-06-04 15:24:40,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-06-04 15:24:40,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-04 15:24:40,611 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 244 flow [2024-06-04 15:24:40,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:40,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:40,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:40,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:24:40,611 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)] === [2024-06-04 15:24:40,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:40,612 INFO L85 PathProgramCache]: Analyzing trace with hash -72326031, now seen corresponding path program 2 times [2024-06-04 15:24:40,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:40,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69167341] [2024-06-04 15:24:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:40,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:41,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:41,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69167341] [2024-06-04 15:24:41,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69167341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:41,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:41,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:24:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256173536] [2024-06-04 15:24:41,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:24:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:41,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:24:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:24:41,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:24:41,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:41,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:41,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:24:41,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:41,227 INFO L124 PetriNetUnfolderBase]: 192/359 cut-off events. [2024-06-04 15:24:41,227 INFO L125 PetriNetUnfolderBase]: For 1557/1557 co-relation queries the response was YES. [2024-06-04 15:24:41,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 359 events. 192/359 cut-off events. For 1557/1557 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1296 event pairs, 50 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1344. Up to 327 conditions per place. [2024-06-04 15:24:41,229 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-06-04 15:24:41,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 348 flow [2024-06-04 15:24:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:24:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:24:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-04 15:24:41,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:24:41,231 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 244 flow. Second operand 6 states and 75 transitions. [2024-06-04 15:24:41,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 348 flow [2024-06-04 15:24:41,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 333 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:24:41,233 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 250 flow [2024-06-04 15:24:41,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-04 15:24:41,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-04 15:24:41,234 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 250 flow [2024-06-04 15:24:41,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:41,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:41,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:41,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:24:41,234 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)] === [2024-06-04 15:24:41,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:41,235 INFO L85 PathProgramCache]: Analyzing trace with hash -101638205, now seen corresponding path program 1 times [2024-06-04 15:24:41,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:41,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397245690] [2024-06-04 15:24:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:41,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:41,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397245690] [2024-06-04 15:24:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397245690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:41,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:41,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:41,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314365223] [2024-06-04 15:24:41,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:41,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:41,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:41,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:41,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:41,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:41,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:41,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:41,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:41,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:42,060 INFO L124 PetriNetUnfolderBase]: 202/366 cut-off events. [2024-06-04 15:24:42,060 INFO L125 PetriNetUnfolderBase]: For 1803/1803 co-relation queries the response was YES. [2024-06-04 15:24:42,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 366 events. 202/366 cut-off events. For 1803/1803 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1260 event pairs, 50 based on Foata normal form. 3/367 useless extension candidates. Maximal degree in co-relation 1384. Up to 342 conditions per place. [2024-06-04 15:24:42,062 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 42 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-06-04 15:24:42,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 384 flow [2024-06-04 15:24:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 15:24:42,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-04 15:24:42,064 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 250 flow. Second operand 7 states and 81 transitions. [2024-06-04 15:24:42,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 384 flow [2024-06-04 15:24:42,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 350 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:24:42,067 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 255 flow [2024-06-04 15:24:42,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-04 15:24:42,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-04 15:24:42,068 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 255 flow [2024-06-04 15:24:42,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:42,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:42,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:42,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:24:42,068 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)] === [2024-06-04 15:24:42,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:42,069 INFO L85 PathProgramCache]: Analyzing trace with hash 111499709, now seen corresponding path program 1 times [2024-06-04 15:24:42,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:42,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843933951] [2024-06-04 15:24:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:42,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:42,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:42,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843933951] [2024-06-04 15:24:42,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843933951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:42,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:42,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:42,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300791266] [2024-06-04 15:24:42,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:42,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:42,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:42,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:42,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:42,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:42,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:42,780 INFO L124 PetriNetUnfolderBase]: 208/376 cut-off events. [2024-06-04 15:24:42,781 INFO L125 PetriNetUnfolderBase]: For 2064/2064 co-relation queries the response was YES. [2024-06-04 15:24:42,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 376 events. 208/376 cut-off events. For 2064/2064 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1307 event pairs, 50 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1466. Up to 308 conditions per place. [2024-06-04 15:24:42,783 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 43 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-06-04 15:24:42,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 449 flow [2024-06-04 15:24:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-04 15:24:42,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-04 15:24:42,784 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 255 flow. Second operand 7 states and 90 transitions. [2024-06-04 15:24:42,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 449 flow [2024-06-04 15:24:42,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 426 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:24:42,787 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 300 flow [2024-06-04 15:24:42,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-04 15:24:42,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-04 15:24:42,788 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 300 flow [2024-06-04 15:24:42,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:42,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:42,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:42,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:24:42,788 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)] === [2024-06-04 15:24:42,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2030755193, now seen corresponding path program 2 times [2024-06-04 15:24:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889548459] [2024-06-04 15:24:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:43,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:43,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889548459] [2024-06-04 15:24:43,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889548459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:43,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:43,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:43,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504190842] [2024-06-04 15:24:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:43,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:43,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:43,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:43,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:43,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:43,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:43,522 INFO L124 PetriNetUnfolderBase]: 211/381 cut-off events. [2024-06-04 15:24:43,522 INFO L125 PetriNetUnfolderBase]: For 2413/2413 co-relation queries the response was YES. [2024-06-04 15:24:43,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 381 events. 211/381 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1320 event pairs, 48 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1579. Up to 363 conditions per place. [2024-06-04 15:24:43,524 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-04 15:24:43,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 444 flow [2024-06-04 15:24:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:43,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 15:24:43,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-04 15:24:43,526 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 300 flow. Second operand 7 states and 79 transitions. [2024-06-04 15:24:43,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 444 flow [2024-06-04 15:24:43,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 424 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 15:24:43,529 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 323 flow [2024-06-04 15:24:43,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-04 15:24:43,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-04 15:24:43,531 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 323 flow [2024-06-04 15:24:43,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:43,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:43,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:43,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:24:43,531 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)] === [2024-06-04 15:24:43,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:43,532 INFO L85 PathProgramCache]: Analyzing trace with hash 288631229, now seen corresponding path program 3 times [2024-06-04 15:24:43,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:43,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501769854] [2024-06-04 15:24:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:43,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501769854] [2024-06-04 15:24:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501769854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:44,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:44,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:44,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821341332] [2024-06-04 15:24:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:44,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:44,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:44,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:44,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:44,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 323 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:44,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:44,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:44,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:44,262 INFO L124 PetriNetUnfolderBase]: 209/378 cut-off events. [2024-06-04 15:24:44,262 INFO L125 PetriNetUnfolderBase]: For 2828/2828 co-relation queries the response was YES. [2024-06-04 15:24:44,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 378 events. 209/378 cut-off events. For 2828/2828 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1306 event pairs, 48 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1622. Up to 354 conditions per place. [2024-06-04 15:24:44,264 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 46 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-04 15:24:44,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 61 transitions, 475 flow [2024-06-04 15:24:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 15:24:44,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-04 15:24:44,265 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 323 flow. Second operand 7 states and 81 transitions. [2024-06-04 15:24:44,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 61 transitions, 475 flow [2024-06-04 15:24:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 450 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:24:44,269 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 351 flow [2024-06-04 15:24:44,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-04 15:24:44,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-04 15:24:44,270 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 351 flow [2024-06-04 15:24:44,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:44,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:44,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:44,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:24:44,271 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)] === [2024-06-04 15:24:44,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash 899908152, now seen corresponding path program 1 times [2024-06-04 15:24:44,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:44,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623078487] [2024-06-04 15:24:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:44,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:44,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623078487] [2024-06-04 15:24:44,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623078487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:44,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754951262] [2024-06-04 15:24:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:44,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:44,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:44,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:44,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:44,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:24:44,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:44,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:44,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:24:44,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:45,081 INFO L124 PetriNetUnfolderBase]: 202/373 cut-off events. [2024-06-04 15:24:45,082 INFO L125 PetriNetUnfolderBase]: For 3419/3419 co-relation queries the response was YES. [2024-06-04 15:24:45,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1685 conditions, 373 events. 202/373 cut-off events. For 3419/3419 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1321 event pairs, 46 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 1652. Up to 288 conditions per place. [2024-06-04 15:24:45,084 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-06-04 15:24:45,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 563 flow [2024-06-04 15:24:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-04 15:24:45,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:24:45,086 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 351 flow. Second operand 7 states and 96 transitions. [2024-06-04 15:24:45,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 563 flow [2024-06-04 15:24:45,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 528 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 15:24:45,090 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 383 flow [2024-06-04 15:24:45,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-06-04 15:24:45,091 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 15:24:45,092 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 383 flow [2024-06-04 15:24:45,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:45,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:45,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:45,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:24:45,092 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)] === [2024-06-04 15:24:45,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1546176598, now seen corresponding path program 2 times [2024-06-04 15:24:45,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:45,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187705301] [2024-06-04 15:24:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:45,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187705301] [2024-06-04 15:24:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187705301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:45,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:45,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:45,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920824117] [2024-06-04 15:24:45,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:45,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:45,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:45,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:24:45,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 383 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:45,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:45,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:24:45,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:46,065 INFO L124 PetriNetUnfolderBase]: 200/370 cut-off events. [2024-06-04 15:24:46,066 INFO L125 PetriNetUnfolderBase]: For 3825/3825 co-relation queries the response was YES. [2024-06-04 15:24:46,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 370 events. 200/370 cut-off events. For 3825/3825 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1302 event pairs, 46 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1698. Up to 301 conditions per place. [2024-06-04 15:24:46,068 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 45 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2024-06-04 15:24:46,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 527 flow [2024-06-04 15:24:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-04 15:24:46,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-04 15:24:46,069 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 383 flow. Second operand 7 states and 92 transitions. [2024-06-04 15:24:46,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 527 flow [2024-06-04 15:24:46,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 502 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:24:46,073 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 393 flow [2024-06-04 15:24:46,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-06-04 15:24:46,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-04 15:24:46,074 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 393 flow [2024-06-04 15:24:46,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:46,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:46,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:46,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:24:46,074 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)] === [2024-06-04 15:24:46,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:46,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1542457373, now seen corresponding path program 1 times [2024-06-04 15:24:46,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:46,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458989148] [2024-06-04 15:24:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:46,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:46,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458989148] [2024-06-04 15:24:46,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458989148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:46,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:46,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:46,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649396886] [2024-06-04 15:24:46,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:46,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:46,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:46,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:46,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:46,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:46,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:46,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:46,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:46,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:46,752 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-04 15:24:46,752 INFO L125 PetriNetUnfolderBase]: For 4266/4266 co-relation queries the response was YES. [2024-06-04 15:24:46,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 385 events. 213/385 cut-off events. For 4266/4266 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1341 event pairs, 49 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1820. Up to 315 conditions per place. [2024-06-04 15:24:46,756 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 48 selfloop transitions, 24 changer transitions 0/74 dead transitions. [2024-06-04 15:24:46,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 617 flow [2024-06-04 15:24:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-04 15:24:46,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-04 15:24:46,757 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 393 flow. Second operand 7 states and 93 transitions. [2024-06-04 15:24:46,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 617 flow [2024-06-04 15:24:46,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 579 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:24:46,762 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 424 flow [2024-06-04 15:24:46,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-06-04 15:24:46,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-04 15:24:46,763 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 424 flow [2024-06-04 15:24:46,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:46,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:46,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:24:46,763 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)] === [2024-06-04 15:24:46,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash -838475545, now seen corresponding path program 2 times [2024-06-04 15:24:46,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:46,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636852375] [2024-06-04 15:24:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:46,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:47,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:47,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636852375] [2024-06-04 15:24:47,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636852375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:47,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:47,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:47,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210693203] [2024-06-04 15:24:47,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:47,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:47,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:47,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:47,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:47,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 424 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:47,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:47,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:47,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:47,435 INFO L124 PetriNetUnfolderBase]: 216/390 cut-off events. [2024-06-04 15:24:47,435 INFO L125 PetriNetUnfolderBase]: For 4807/4807 co-relation queries the response was YES. [2024-06-04 15:24:47,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 390 events. 216/390 cut-off events. For 4807/4807 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1364 event pairs, 49 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 1895. Up to 319 conditions per place. [2024-06-04 15:24:47,438 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 23 changer transitions 0/73 dead transitions. [2024-06-04 15:24:47,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 644 flow [2024-06-04 15:24:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-04 15:24:47,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-04 15:24:47,439 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 424 flow. Second operand 7 states and 89 transitions. [2024-06-04 15:24:47,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 644 flow [2024-06-04 15:24:47,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 584 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:24:47,446 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 436 flow [2024-06-04 15:24:47,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-06-04 15:24:47,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-04 15:24:47,447 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 436 flow [2024-06-04 15:24:47,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:47,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:47,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:47,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:24:47,447 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)] === [2024-06-04 15:24:47,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:47,448 INFO L85 PathProgramCache]: Analyzing trace with hash -838475328, now seen corresponding path program 1 times [2024-06-04 15:24:47,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:47,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967272689] [2024-06-04 15:24:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967272689] [2024-06-04 15:24:47,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967272689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:47,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:47,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:47,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015674993] [2024-06-04 15:24:47,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:47,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:47,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:48,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:48,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 436 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:48,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:48,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:48,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:48,219 INFO L124 PetriNetUnfolderBase]: 254/452 cut-off events. [2024-06-04 15:24:48,219 INFO L125 PetriNetUnfolderBase]: For 6684/6684 co-relation queries the response was YES. [2024-06-04 15:24:48,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 452 events. 254/452 cut-off events. For 6684/6684 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1665 event pairs, 56 based on Foata normal form. 6/456 useless extension candidates. Maximal degree in co-relation 2207. Up to 308 conditions per place. [2024-06-04 15:24:48,223 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 24 changer transitions 0/86 dead transitions. [2024-06-04 15:24:48,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 724 flow [2024-06-04 15:24:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-04 15:24:48,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-04 15:24:48,224 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 436 flow. Second operand 8 states and 106 transitions. [2024-06-04 15:24:48,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 724 flow [2024-06-04 15:24:48,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 685 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:24:48,230 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 505 flow [2024-06-04 15:24:48,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-06-04 15:24:48,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-04 15:24:48,232 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 505 flow [2024-06-04 15:24:48,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:48,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:48,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:48,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:24:48,233 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)] === [2024-06-04 15:24:48,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1471097468, now seen corresponding path program 2 times [2024-06-04 15:24:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:48,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645945247] [2024-06-04 15:24:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:48,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:48,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645945247] [2024-06-04 15:24:48,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645945247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:48,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:48,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:48,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947490275] [2024-06-04 15:24:48,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:48,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:48,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:48,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:48,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:48,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:48,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 505 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:48,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:48,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:48,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:49,031 INFO L124 PetriNetUnfolderBase]: 278/491 cut-off events. [2024-06-04 15:24:49,032 INFO L125 PetriNetUnfolderBase]: For 7857/7857 co-relation queries the response was YES. [2024-06-04 15:24:49,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 491 events. 278/491 cut-off events. For 7857/7857 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1832 event pairs, 55 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 2608. Up to 447 conditions per place. [2024-06-04 15:24:49,035 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-06-04 15:24:49,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 781 flow [2024-06-04 15:24:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 15:24:49,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-04 15:24:49,037 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 505 flow. Second operand 8 states and 95 transitions. [2024-06-04 15:24:49,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 781 flow [2024-06-04 15:24:49,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 754 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 15:24:49,045 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 557 flow [2024-06-04 15:24:49,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=557, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-06-04 15:24:49,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-04 15:24:49,045 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 557 flow [2024-06-04 15:24:49,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:49,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:49,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:49,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:24:49,046 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)] === [2024-06-04 15:24:49,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 365253056, now seen corresponding path program 3 times [2024-06-04 15:24:49,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:49,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325342644] [2024-06-04 15:24:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:49,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:49,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325342644] [2024-06-04 15:24:49,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325342644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:49,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:49,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:49,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806644514] [2024-06-04 15:24:49,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:49,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:49,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:49,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:49,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:49,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 557 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:49,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:49,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:49,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:49,857 INFO L124 PetriNetUnfolderBase]: 272/482 cut-off events. [2024-06-04 15:24:49,857 INFO L125 PetriNetUnfolderBase]: For 8200/8200 co-relation queries the response was YES. [2024-06-04 15:24:49,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2613 conditions, 482 events. 272/482 cut-off events. For 8200/8200 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1791 event pairs, 53 based on Foata normal form. 3/483 useless extension candidates. Maximal degree in co-relation 2570. Up to 455 conditions per place. [2024-06-04 15:24:49,860 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-04 15:24:49,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 743 flow [2024-06-04 15:24:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 15:24:49,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:24:49,861 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 557 flow. Second operand 8 states and 90 transitions. [2024-06-04 15:24:49,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 743 flow [2024-06-04 15:24:49,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 703 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-04 15:24:49,869 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 546 flow [2024-06-04 15:24:49,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=546, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-06-04 15:24:49,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-04 15:24:49,870 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 546 flow [2024-06-04 15:24:49,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:49,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:49,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:49,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:24:49,871 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)] === [2024-06-04 15:24:49,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 364985929, now seen corresponding path program 3 times [2024-06-04 15:24:49,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:49,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595872974] [2024-06-04 15:24:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:49,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:50,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595872974] [2024-06-04 15:24:50,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595872974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:50,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:50,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:50,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8892794] [2024-06-04 15:24:50,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:50,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:50,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:50,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:50,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:50,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 546 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:50,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:50,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:50,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:50,536 INFO L124 PetriNetUnfolderBase]: 270/479 cut-off events. [2024-06-04 15:24:50,536 INFO L125 PetriNetUnfolderBase]: For 8062/8062 co-relation queries the response was YES. [2024-06-04 15:24:50,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2581 conditions, 479 events. 270/479 cut-off events. For 8062/8062 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1777 event pairs, 54 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2537. Up to 458 conditions per place. [2024-06-04 15:24:50,539 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 67 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-06-04 15:24:50,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 80 transitions, 718 flow [2024-06-04 15:24:50,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:50,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-04 15:24:50,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-04 15:24:50,541 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 546 flow. Second operand 7 states and 80 transitions. [2024-06-04 15:24:50,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 80 transitions, 718 flow [2024-06-04 15:24:50,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 80 transitions, 682 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:24:50,548 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 537 flow [2024-06-04 15:24:50,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=537, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-06-04 15:24:50,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-04 15:24:50,549 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 537 flow [2024-06-04 15:24:50,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:50,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:50,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:50,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:24:50,550 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)] === [2024-06-04 15:24:50,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:50,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1478449118, now seen corresponding path program 4 times [2024-06-04 15:24:50,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:50,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931818881] [2024-06-04 15:24:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:50,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:51,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:51,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931818881] [2024-06-04 15:24:51,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931818881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:51,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:51,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:51,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266101358] [2024-06-04 15:24:51,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:51,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:51,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:51,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:51,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:51,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:51,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 537 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:51,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:51,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:51,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:51,338 INFO L124 PetriNetUnfolderBase]: 264/470 cut-off events. [2024-06-04 15:24:51,338 INFO L125 PetriNetUnfolderBase]: For 8503/8503 co-relation queries the response was YES. [2024-06-04 15:24:51,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 470 events. 264/470 cut-off events. For 8503/8503 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1736 event pairs, 51 based on Foata normal form. 3/471 useless extension candidates. Maximal degree in co-relation 2451. Up to 416 conditions per place. [2024-06-04 15:24:51,341 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 19 changer transitions 0/87 dead transitions. [2024-06-04 15:24:51,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 761 flow [2024-06-04 15:24:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 15:24:51,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:24:51,343 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 537 flow. Second operand 8 states and 96 transitions. [2024-06-04 15:24:51,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 761 flow [2024-06-04 15:24:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 716 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 15:24:51,352 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 563 flow [2024-06-04 15:24:51,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-06-04 15:24:51,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-04 15:24:51,352 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 563 flow [2024-06-04 15:24:51,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:24:51,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:51,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:51,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:24:51,353 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)] === [2024-06-04 15:24:51,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash -341263200, now seen corresponding path program 1 times [2024-06-04 15:24:51,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:51,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604539353] [2024-06-04 15:24:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:51,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:52,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604539353] [2024-06-04 15:24:52,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604539353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:52,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:52,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218543990] [2024-06-04 15:24:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:52,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:52,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:52,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:52,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:24:52,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 563 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-04 15:24:52,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:52,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:24:52,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:52,305 INFO L124 PetriNetUnfolderBase]: 256/466 cut-off events. [2024-06-04 15:24:52,305 INFO L125 PetriNetUnfolderBase]: For 9227/9227 co-relation queries the response was YES. [2024-06-04 15:24:52,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 466 events. 256/466 cut-off events. For 9227/9227 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1781 event pairs, 34 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2490. Up to 336 conditions per place. [2024-06-04 15:24:52,308 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 20 changer transitions 0/93 dead transitions. [2024-06-04 15:24:52,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 823 flow [2024-06-04 15:24:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-04 15:24:52,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-04 15:24:52,309 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 563 flow. Second operand 8 states and 105 transitions. [2024-06-04 15:24:52,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 823 flow [2024-06-04 15:24:52,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 770 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 15:24:52,319 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 564 flow [2024-06-04 15:24:52,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-04 15:24:52,319 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-04 15:24:52,320 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 564 flow [2024-06-04 15:24:52,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-04 15:24:52,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:52,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:52,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:24:52,320 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)] === [2024-06-04 15:24:52,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:52,321 INFO L85 PathProgramCache]: Analyzing trace with hash -689629958, now seen corresponding path program 2 times [2024-06-04 15:24:52,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:52,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236652647] [2024-06-04 15:24:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:52,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:52,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:52,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236652647] [2024-06-04 15:24:52,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236652647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:52,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:52,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:52,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039179748] [2024-06-04 15:24:52,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:52,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:52,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:52,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:52,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:53,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:24:53,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 564 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-04 15:24:53,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:53,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:24:53,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:53,293 INFO L124 PetriNetUnfolderBase]: 252/460 cut-off events. [2024-06-04 15:24:53,293 INFO L125 PetriNetUnfolderBase]: For 9292/9292 co-relation queries the response was YES. [2024-06-04 15:24:53,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 460 events. 252/460 cut-off events. For 9292/9292 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1754 event pairs, 47 based on Foata normal form. 2/460 useless extension candidates. Maximal degree in co-relation 2427. Up to 365 conditions per place. [2024-06-04 15:24:53,296 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 61 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2024-06-04 15:24:53,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 766 flow [2024-06-04 15:24:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:24:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:24:53,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-04 15:24:53,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-04 15:24:53,298 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 564 flow. Second operand 9 states and 116 transitions. [2024-06-04 15:24:53,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 766 flow [2024-06-04 15:24:53,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 720 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 15:24:53,308 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 565 flow [2024-06-04 15:24:53,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=565, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2024-06-04 15:24:53,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-04 15:24:53,308 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 565 flow [2024-06-04 15:24:53,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-04 15:24:53,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:53,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:53,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:24:53,309 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)] === [2024-06-04 15:24:53,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash -689629834, now seen corresponding path program 1 times [2024-06-04 15:24:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715045258] [2024-06-04 15:24:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:53,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:53,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:53,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715045258] [2024-06-04 15:24:53,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715045258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:53,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:53,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:53,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134161816] [2024-06-04 15:24:53,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:53,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:53,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:53,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:53,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:53,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:53,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 565 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) [2024-06-04 15:24:53,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:53,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:53,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:54,143 INFO L124 PetriNetUnfolderBase]: 268/478 cut-off events. [2024-06-04 15:24:54,143 INFO L125 PetriNetUnfolderBase]: For 9677/9677 co-relation queries the response was YES. [2024-06-04 15:24:54,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 478 events. 268/478 cut-off events. For 9677/9677 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1798 event pairs, 53 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2518. Up to 373 conditions per place. [2024-06-04 15:24:54,146 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 27 changer transitions 0/95 dead transitions. [2024-06-04 15:24:54,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 859 flow [2024-06-04 15:24:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-04 15:24:54,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:24:54,148 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 565 flow. Second operand 8 states and 102 transitions. [2024-06-04 15:24:54,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 859 flow [2024-06-04 15:24:54,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 801 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:24:54,157 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 594 flow [2024-06-04 15:24:54,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-04 15:24:54,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-04 15:24:54,158 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 594 flow [2024-06-04 15:24:54,158 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) [2024-06-04 15:24:54,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:54,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:54,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:24:54,158 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)] === [2024-06-04 15:24:54,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -686828674, now seen corresponding path program 2 times [2024-06-04 15:24:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887875466] [2024-06-04 15:24:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:54,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:54,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:54,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887875466] [2024-06-04 15:24:54,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887875466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:54,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:54,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:54,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536481502] [2024-06-04 15:24:54,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:54,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:54,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:54,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:54,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 594 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) [2024-06-04 15:24:54,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:54,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:54,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:55,153 INFO L124 PetriNetUnfolderBase]: 271/483 cut-off events. [2024-06-04 15:24:55,153 INFO L125 PetriNetUnfolderBase]: For 10433/10433 co-relation queries the response was YES. [2024-06-04 15:24:55,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 483 events. 271/483 cut-off events. For 10433/10433 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1829 event pairs, 53 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2557. Up to 410 conditions per place. [2024-06-04 15:24:55,157 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2024-06-04 15:24:55,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 818 flow [2024-06-04 15:24:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:55,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-04 15:24:55,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 15:24:55,159 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 594 flow. Second operand 8 states and 98 transitions. [2024-06-04 15:24:55,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 818 flow [2024-06-04 15:24:55,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 779 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-04 15:24:55,173 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 630 flow [2024-06-04 15:24:55,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=630, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-06-04 15:24:55,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-04 15:24:55,174 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 630 flow [2024-06-04 15:24:55,174 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) [2024-06-04 15:24:55,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:55,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:55,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:24:55,174 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)] === [2024-06-04 15:24:55,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:55,175 INFO L85 PathProgramCache]: Analyzing trace with hash -686833324, now seen corresponding path program 3 times [2024-06-04 15:24:55,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:55,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565400032] [2024-06-04 15:24:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:55,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565400032] [2024-06-04 15:24:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565400032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390520121] [2024-06-04 15:24:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:55,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:55,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:55,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:55,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 630 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) [2024-06-04 15:24:55,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:55,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:55,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:56,127 INFO L124 PetriNetUnfolderBase]: 274/488 cut-off events. [2024-06-04 15:24:56,127 INFO L125 PetriNetUnfolderBase]: For 11230/11230 co-relation queries the response was YES. [2024-06-04 15:24:56,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2691 conditions, 488 events. 274/488 cut-off events. For 11230/11230 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1839 event pairs, 49 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 2641. Up to 409 conditions per place. [2024-06-04 15:24:56,135 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 29 changer transitions 0/96 dead transitions. [2024-06-04 15:24:56,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 864 flow [2024-06-04 15:24:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:24:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:24:56,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 15:24:56,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 15:24:56,137 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 630 flow. Second operand 9 states and 107 transitions. [2024-06-04 15:24:56,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 864 flow [2024-06-04 15:24:56,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 811 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:24:56,149 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 665 flow [2024-06-04 15:24:56,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=665, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-06-04 15:24:56,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-04 15:24:56,150 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 665 flow [2024-06-04 15:24:56,150 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) [2024-06-04 15:24:56,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:56,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:56,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:24:56,151 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)] === [2024-06-04 15:24:56,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash -571542154, now seen corresponding path program 4 times [2024-06-04 15:24:56,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:56,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293130719] [2024-06-04 15:24:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:56,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:56,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:56,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293130719] [2024-06-04 15:24:56,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293130719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:56,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:56,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:56,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164964155] [2024-06-04 15:24:56,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:56,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:56,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:56,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:56,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:56,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:56,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 665 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) [2024-06-04 15:24:56,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:56,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:56,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:57,072 INFO L124 PetriNetUnfolderBase]: 277/493 cut-off events. [2024-06-04 15:24:57,072 INFO L125 PetriNetUnfolderBase]: For 12105/12105 co-relation queries the response was YES. [2024-06-04 15:24:57,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 493 events. 277/493 cut-off events. For 12105/12105 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1871 event pairs, 49 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 2718. Up to 400 conditions per place. [2024-06-04 15:24:57,076 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 33 changer transitions 0/105 dead transitions. [2024-06-04 15:24:57,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 993 flow [2024-06-04 15:24:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:24:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:24:57,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-04 15:24:57,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-04 15:24:57,078 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 665 flow. Second operand 9 states and 116 transitions. [2024-06-04 15:24:57,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 993 flow [2024-06-04 15:24:57,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 923 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:24:57,092 INFO L231 Difference]: Finished difference. Result has 102 places, 86 transitions, 691 flow [2024-06-04 15:24:57,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=691, PETRI_PLACES=102, PETRI_TRANSITIONS=86} [2024-06-04 15:24:57,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-04 15:24:57,093 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 86 transitions, 691 flow [2024-06-04 15:24:57,093 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) [2024-06-04 15:24:57,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:57,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:57,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:24:57,093 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)] === [2024-06-04 15:24:57,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:57,094 INFO L85 PathProgramCache]: Analyzing trace with hash -571537318, now seen corresponding path program 1 times [2024-06-04 15:24:57,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:57,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729825712] [2024-06-04 15:24:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:57,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:57,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:57,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729825712] [2024-06-04 15:24:57,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729825712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:57,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:57,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:57,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604542133] [2024-06-04 15:24:57,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:57,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:57,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:57,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:57,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:57,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 86 transitions, 691 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) [2024-06-04 15:24:57,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:57,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:57,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:57,876 INFO L124 PetriNetUnfolderBase]: 286/508 cut-off events. [2024-06-04 15:24:57,876 INFO L125 PetriNetUnfolderBase]: For 12865/12865 co-relation queries the response was YES. [2024-06-04 15:24:57,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 508 events. 286/508 cut-off events. For 12865/12865 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1940 event pairs, 50 based on Foata normal form. 3/509 useless extension candidates. Maximal degree in co-relation 2778. Up to 341 conditions per place. [2024-06-04 15:24:57,880 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 35 changer transitions 0/109 dead transitions. [2024-06-04 15:24:57,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 109 transitions, 1029 flow [2024-06-04 15:24:57,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:57,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-04 15:24:57,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-04 15:24:57,881 INFO L175 Difference]: Start difference. First operand has 102 places, 86 transitions, 691 flow. Second operand 8 states and 111 transitions. [2024-06-04 15:24:57,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 109 transitions, 1029 flow [2024-06-04 15:24:57,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 948 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:24:57,894 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 701 flow [2024-06-04 15:24:57,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=701, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-06-04 15:24:57,894 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-04 15:24:57,894 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 701 flow [2024-06-04 15:24:57,894 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) [2024-06-04 15:24:57,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:57,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:57,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:24:57,895 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)] === [2024-06-04 15:24:57,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash -571364338, now seen corresponding path program 2 times [2024-06-04 15:24:57,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:57,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696752696] [2024-06-04 15:24:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:57,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:58,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:58,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696752696] [2024-06-04 15:24:58,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696752696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:58,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:58,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:58,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297630344] [2024-06-04 15:24:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:58,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:58,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:58,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 701 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) [2024-06-04 15:24:58,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:58,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:58,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:58,671 INFO L124 PetriNetUnfolderBase]: 310/547 cut-off events. [2024-06-04 15:24:58,672 INFO L125 PetriNetUnfolderBase]: For 15063/15063 co-relation queries the response was YES. [2024-06-04 15:24:58,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3124 conditions, 547 events. 310/547 cut-off events. For 15063/15063 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2149 event pairs, 54 based on Foata normal form. 3/548 useless extension candidates. Maximal degree in co-relation 3071. Up to 361 conditions per place. [2024-06-04 15:24:58,675 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 77 selfloop transitions, 34 changer transitions 0/113 dead transitions. [2024-06-04 15:24:58,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 113 transitions, 1129 flow [2024-06-04 15:24:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:58,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-04 15:24:58,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-04 15:24:58,676 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 701 flow. Second operand 8 states and 111 transitions. [2024-06-04 15:24:58,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 113 transitions, 1129 flow [2024-06-04 15:24:58,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 1037 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:24:58,693 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 722 flow [2024-06-04 15:24:58,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=722, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-04 15:24:58,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-04 15:24:58,694 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 722 flow [2024-06-04 15:24:58,694 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) [2024-06-04 15:24:58,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:58,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:58,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:24:58,695 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)] === [2024-06-04 15:24:58,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:58,695 INFO L85 PathProgramCache]: Analyzing trace with hash -571364524, now seen corresponding path program 5 times [2024-06-04 15:24:58,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:58,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066251176] [2024-06-04 15:24:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:58,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:59,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066251176] [2024-06-04 15:24:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066251176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:59,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:59,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:59,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539603708] [2024-06-04 15:24:59,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:59,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:59,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:59,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:59,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:24:59,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 722 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) [2024-06-04 15:24:59,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:59,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:24:59,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:59,742 INFO L124 PetriNetUnfolderBase]: 313/552 cut-off events. [2024-06-04 15:24:59,742 INFO L125 PetriNetUnfolderBase]: For 15274/15274 co-relation queries the response was YES. [2024-06-04 15:24:59,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 552 events. 313/552 cut-off events. For 15274/15274 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2171 event pairs, 55 based on Foata normal form. 1/551 useless extension candidates. Maximal degree in co-relation 3118. Up to 479 conditions per place. [2024-06-04 15:24:59,745 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 78 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-04 15:24:59,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 105 transitions, 972 flow [2024-06-04 15:24:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 15:24:59,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-04 15:24:59,746 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 722 flow. Second operand 8 states and 97 transitions. [2024-06-04 15:24:59,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 105 transitions, 972 flow [2024-06-04 15:24:59,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 105 transitions, 923 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 15:24:59,763 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 750 flow [2024-06-04 15:24:59,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=750, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-04 15:24:59,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-04 15:24:59,763 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 750 flow [2024-06-04 15:24:59,763 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) [2024-06-04 15:24:59,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:59,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:59,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:24:59,764 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)] === [2024-06-04 15:24:59,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash -222930620, now seen corresponding path program 3 times [2024-06-04 15:24:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:59,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357304164] [2024-06-04 15:24:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:00,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:00,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357304164] [2024-06-04 15:25:00,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357304164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:00,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:00,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:00,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379350675] [2024-06-04 15:25:00,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:00,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:00,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:00,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:00,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:00,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 750 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) [2024-06-04 15:25:00,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:00,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:00,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:00,531 INFO L124 PetriNetUnfolderBase]: 307/543 cut-off events. [2024-06-04 15:25:00,531 INFO L125 PetriNetUnfolderBase]: For 15725/15725 co-relation queries the response was YES. [2024-06-04 15:25:00,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3064 conditions, 543 events. 307/543 cut-off events. For 15725/15725 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2140 event pairs, 54 based on Foata normal form. 3/544 useless extension candidates. Maximal degree in co-relation 3009. Up to 362 conditions per place. [2024-06-04 15:25:00,534 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 75 selfloop transitions, 35 changer transitions 0/112 dead transitions. [2024-06-04 15:25:00,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 1076 flow [2024-06-04 15:25:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-04 15:25:00,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-04 15:25:00,535 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 750 flow. Second operand 8 states and 107 transitions. [2024-06-04 15:25:00,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 1076 flow [2024-06-04 15:25:00,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 1015 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:00,555 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 765 flow [2024-06-04 15:25:00,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=765, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2024-06-04 15:25:00,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-04 15:25:00,555 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 765 flow [2024-06-04 15:25:00,555 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) [2024-06-04 15:25:00,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:00,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:00,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:25:00,556 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)] === [2024-06-04 15:25:00,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1649190648, now seen corresponding path program 1 times [2024-06-04 15:25:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205519488] [2024-06-04 15:25:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:00,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205519488] [2024-06-04 15:25:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205519488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:01,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:01,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:01,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49102729] [2024-06-04 15:25:01,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:01,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:01,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:01,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:01,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 765 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:01,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:01,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:01,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:01,595 INFO L124 PetriNetUnfolderBase]: 303/537 cut-off events. [2024-06-04 15:25:01,595 INFO L125 PetriNetUnfolderBase]: For 15467/15467 co-relation queries the response was YES. [2024-06-04 15:25:01,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 537 events. 303/537 cut-off events. For 15467/15467 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2092 event pairs, 43 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 2998. Up to 505 conditions per place. [2024-06-04 15:25:01,598 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 91 selfloop transitions, 14 changer transitions 0/107 dead transitions. [2024-06-04 15:25:01,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 107 transitions, 1023 flow [2024-06-04 15:25:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:01,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 15:25:01,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:25:01,599 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 765 flow. Second operand 9 states and 99 transitions. [2024-06-04 15:25:01,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 107 transitions, 1023 flow [2024-06-04 15:25:01,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 947 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:01,617 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 750 flow [2024-06-04 15:25:01,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2024-06-04 15:25:01,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-04 15:25:01,618 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 750 flow [2024-06-04 15:25:01,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:01,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:01,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:01,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:25:01,618 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)] === [2024-06-04 15:25:01,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1570337100, now seen corresponding path program 4 times [2024-06-04 15:25:01,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:01,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197663739] [2024-06-04 15:25:01,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:01,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:02,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:02,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197663739] [2024-06-04 15:25:02,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197663739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:02,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:02,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:02,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200743374] [2024-06-04 15:25:02,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:02,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:02,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:02,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:02,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:02,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 750 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) [2024-06-04 15:25:02,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:02,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:02,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:02,442 INFO L124 PetriNetUnfolderBase]: 312/552 cut-off events. [2024-06-04 15:25:02,443 INFO L125 PetriNetUnfolderBase]: For 16683/16683 co-relation queries the response was YES. [2024-06-04 15:25:02,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 552 events. 312/552 cut-off events. For 16683/16683 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2184 event pairs, 47 based on Foata normal form. 3/553 useless extension candidates. Maximal degree in co-relation 3010. Up to 477 conditions per place. [2024-06-04 15:25:02,446 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 92 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2024-06-04 15:25:02,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 1090 flow [2024-06-04 15:25:02,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:02,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-04 15:25:02,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-04 15:25:02,447 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 750 flow. Second operand 8 states and 99 transitions. [2024-06-04 15:25:02,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 1090 flow [2024-06-04 15:25:02,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 1042 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:02,469 INFO L231 Difference]: Finished difference. Result has 114 places, 98 transitions, 761 flow [2024-06-04 15:25:02,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=761, PETRI_PLACES=114, PETRI_TRANSITIONS=98} [2024-06-04 15:25:02,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-04 15:25:02,470 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 98 transitions, 761 flow [2024-06-04 15:25:02,470 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) [2024-06-04 15:25:02,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:02,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:02,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:25:02,470 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)] === [2024-06-04 15:25:02,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:02,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1640612824, now seen corresponding path program 6 times [2024-06-04 15:25:02,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:02,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083333689] [2024-06-04 15:25:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:02,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:03,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:03,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083333689] [2024-06-04 15:25:03,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083333689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:03,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:03,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:03,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757442258] [2024-06-04 15:25:03,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:03,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:03,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:03,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:03,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:03,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:03,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 98 transitions, 761 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) [2024-06-04 15:25:03,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:03,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:03,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:03,335 INFO L124 PetriNetUnfolderBase]: 310/549 cut-off events. [2024-06-04 15:25:03,335 INFO L125 PetriNetUnfolderBase]: For 16343/16343 co-relation queries the response was YES. [2024-06-04 15:25:03,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3047 conditions, 549 events. 310/549 cut-off events. For 16343/16343 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2176 event pairs, 53 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 2989. Up to 525 conditions per place. [2024-06-04 15:25:03,338 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 91 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2024-06-04 15:25:03,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 106 transitions, 987 flow [2024-06-04 15:25:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 15:25:03,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 15:25:03,339 INFO L175 Difference]: Start difference. First operand has 114 places, 98 transitions, 761 flow. Second operand 8 states and 89 transitions. [2024-06-04 15:25:03,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 106 transitions, 987 flow [2024-06-04 15:25:03,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 106 transitions, 908 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:03,361 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 713 flow [2024-06-04 15:25:03,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=713, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-04 15:25:03,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-04 15:25:03,362 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 713 flow [2024-06-04 15:25:03,362 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) [2024-06-04 15:25:03,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:03,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:03,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:25:03,362 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)] === [2024-06-04 15:25:03,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:03,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2059421098, now seen corresponding path program 5 times [2024-06-04 15:25:03,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:03,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957096042] [2024-06-04 15:25:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:03,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:03,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:03,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957096042] [2024-06-04 15:25:03,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957096042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:03,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:03,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727742328] [2024-06-04 15:25:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:03,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:03,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:03,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:03,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 713 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) [2024-06-04 15:25:03,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:03,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:03,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:04,157 INFO L124 PetriNetUnfolderBase]: 319/564 cut-off events. [2024-06-04 15:25:04,158 INFO L125 PetriNetUnfolderBase]: For 18328/18328 co-relation queries the response was YES. [2024-06-04 15:25:04,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3048 conditions, 564 events. 319/564 cut-off events. For 18328/18328 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2268 event pairs, 53 based on Foata normal form. 3/565 useless extension candidates. Maximal degree in co-relation 2989. Up to 482 conditions per place. [2024-06-04 15:25:04,161 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 93 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2024-06-04 15:25:04,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 115 transitions, 1059 flow [2024-06-04 15:25:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-04 15:25:04,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:25:04,168 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 713 flow. Second operand 8 states and 100 transitions. [2024-06-04 15:25:04,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 115 transitions, 1059 flow [2024-06-04 15:25:04,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 1007 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:04,195 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 720 flow [2024-06-04 15:25:04,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2024-06-04 15:25:04,195 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-04 15:25:04,195 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 720 flow [2024-06-04 15:25:04,196 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) [2024-06-04 15:25:04,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:04,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:04,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:25:04,196 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)] === [2024-06-04 15:25:04,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:04,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1648893730, now seen corresponding path program 6 times [2024-06-04 15:25:04,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:04,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367936059] [2024-06-04 15:25:04,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:04,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:04,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:04,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367936059] [2024-06-04 15:25:04,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367936059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:04,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:04,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:04,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496720197] [2024-06-04 15:25:04,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:04,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:04,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:04,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:04,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:04,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:04,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 720 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) [2024-06-04 15:25:04,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:04,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:04,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:04,973 INFO L124 PetriNetUnfolderBase]: 313/555 cut-off events. [2024-06-04 15:25:04,973 INFO L125 PetriNetUnfolderBase]: For 17565/17565 co-relation queries the response was YES. [2024-06-04 15:25:04,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2937 conditions, 555 events. 313/555 cut-off events. For 17565/17565 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2229 event pairs, 51 based on Foata normal form. 3/556 useless extension candidates. Maximal degree in co-relation 2878. Up to 515 conditions per place. [2024-06-04 15:25:04,976 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-04 15:25:04,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 970 flow [2024-06-04 15:25:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 15:25:04,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 15:25:04,977 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 720 flow. Second operand 8 states and 93 transitions. [2024-06-04 15:25:04,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 970 flow [2024-06-04 15:25:04,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 931 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 15:25:04,998 INFO L231 Difference]: Finished difference. Result has 118 places, 100 transitions, 712 flow [2024-06-04 15:25:04,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=712, PETRI_PLACES=118, PETRI_TRANSITIONS=100} [2024-06-04 15:25:04,998 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-04 15:25:04,998 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 100 transitions, 712 flow [2024-06-04 15:25:04,999 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) [2024-06-04 15:25:04,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:04,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:04,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:25:04,999 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)] === [2024-06-04 15:25:04,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1649201560, now seen corresponding path program 1 times [2024-06-04 15:25:04,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:05,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491367418] [2024-06-04 15:25:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:05,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491367418] [2024-06-04 15:25:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491367418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:05,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:05,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28772888] [2024-06-04 15:25:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:05,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:05,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:05,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:05,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 100 transitions, 712 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:05,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:05,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:05,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:06,277 INFO L124 PetriNetUnfolderBase]: 310/550 cut-off events. [2024-06-04 15:25:06,278 INFO L125 PetriNetUnfolderBase]: For 16703/16703 co-relation queries the response was YES. [2024-06-04 15:25:06,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 550 events. 310/550 cut-off events. For 16703/16703 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2166 event pairs, 48 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 2795. Up to 520 conditions per place. [2024-06-04 15:25:06,280 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 96 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-06-04 15:25:06,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 111 transitions, 954 flow [2024-06-04 15:25:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 15:25:06,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 15:25:06,285 INFO L175 Difference]: Start difference. First operand has 118 places, 100 transitions, 712 flow. Second operand 9 states and 97 transitions. [2024-06-04 15:25:06,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 111 transitions, 954 flow [2024-06-04 15:25:06,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 111 transitions, 912 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:06,302 INFO L231 Difference]: Finished difference. Result has 119 places, 100 transitions, 700 flow [2024-06-04 15:25:06,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=700, PETRI_PLACES=119, PETRI_TRANSITIONS=100} [2024-06-04 15:25:06,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-04 15:25:06,303 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 700 flow [2024-06-04 15:25:06,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:06,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:06,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:06,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:25:06,303 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)] === [2024-06-04 15:25:06,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1989223650, now seen corresponding path program 1 times [2024-06-04 15:25:06,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:06,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478151020] [2024-06-04 15:25:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:06,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:06,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:06,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478151020] [2024-06-04 15:25:06,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478151020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:06,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:06,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:06,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004714895] [2024-06-04 15:25:06,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:06,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:06,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:06,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:07,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:07,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 700 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) [2024-06-04 15:25:07,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:07,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:07,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:07,290 INFO L124 PetriNetUnfolderBase]: 314/558 cut-off events. [2024-06-04 15:25:07,290 INFO L125 PetriNetUnfolderBase]: For 17516/17516 co-relation queries the response was YES. [2024-06-04 15:25:07,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 558 events. 314/558 cut-off events. For 17516/17516 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2233 event pairs, 36 based on Foata normal form. 2/558 useless extension candidates. Maximal degree in co-relation 2828. Up to 375 conditions per place. [2024-06-04 15:25:07,295 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 81 selfloop transitions, 37 changer transitions 0/120 dead transitions. [2024-06-04 15:25:07,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 120 transitions, 1062 flow [2024-06-04 15:25:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:25:07,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:25:07,296 INFO L175 Difference]: Start difference. First operand has 119 places, 100 transitions, 700 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:25:07,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 120 transitions, 1062 flow [2024-06-04 15:25:07,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 120 transitions, 1026 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:07,320 INFO L231 Difference]: Finished difference. Result has 120 places, 101 transitions, 750 flow [2024-06-04 15:25:07,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=120, PETRI_TRANSITIONS=101} [2024-06-04 15:25:07,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-04 15:25:07,321 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 101 transitions, 750 flow [2024-06-04 15:25:07,321 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) [2024-06-04 15:25:07,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:07,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:07,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:25:07,322 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)] === [2024-06-04 15:25:07,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash 85641122, now seen corresponding path program 2 times [2024-06-04 15:25:07,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:07,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806527783] [2024-06-04 15:25:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:07,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806527783] [2024-06-04 15:25:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806527783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:08,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:08,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580858359] [2024-06-04 15:25:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:08,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:08,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:08,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:08,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 101 transitions, 750 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) [2024-06-04 15:25:08,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:08,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:08,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:08,347 INFO L124 PetriNetUnfolderBase]: 329/587 cut-off events. [2024-06-04 15:25:08,347 INFO L125 PetriNetUnfolderBase]: For 19952/19952 co-relation queries the response was YES. [2024-06-04 15:25:08,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 587 events. 329/587 cut-off events. For 19952/19952 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2434 event pairs, 54 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3076. Up to 456 conditions per place. [2024-06-04 15:25:08,353 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 83 selfloop transitions, 37 changer transitions 0/122 dead transitions. [2024-06-04 15:25:08,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 122 transitions, 1132 flow [2024-06-04 15:25:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:08,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 15:25:08,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 15:25:08,355 INFO L175 Difference]: Start difference. First operand has 120 places, 101 transitions, 750 flow. Second operand 9 states and 113 transitions. [2024-06-04 15:25:08,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 122 transitions, 1132 flow [2024-06-04 15:25:08,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 1051 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:08,381 INFO L231 Difference]: Finished difference. Result has 124 places, 104 transitions, 779 flow [2024-06-04 15:25:08,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=779, PETRI_PLACES=124, PETRI_TRANSITIONS=104} [2024-06-04 15:25:08,383 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-04 15:25:08,383 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 104 transitions, 779 flow [2024-06-04 15:25:08,383 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) [2024-06-04 15:25:08,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:08,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:08,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:25:08,383 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)] === [2024-06-04 15:25:08,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1987345980, now seen corresponding path program 3 times [2024-06-04 15:25:08,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:08,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871884046] [2024-06-04 15:25:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:09,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:09,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871884046] [2024-06-04 15:25:09,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871884046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:09,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:09,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:09,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339007831] [2024-06-04 15:25:09,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:09,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:09,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:09,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:09,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:09,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:09,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 104 transitions, 779 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) [2024-06-04 15:25:09,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:09,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:09,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:09,404 INFO L124 PetriNetUnfolderBase]: 326/582 cut-off events. [2024-06-04 15:25:09,404 INFO L125 PetriNetUnfolderBase]: For 19528/19528 co-relation queries the response was YES. [2024-06-04 15:25:09,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3065 conditions, 582 events. 326/582 cut-off events. For 19528/19528 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2403 event pairs, 55 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 3002. Up to 468 conditions per place. [2024-06-04 15:25:09,408 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 36 changer transitions 0/120 dead transitions. [2024-06-04 15:25:09,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 120 transitions, 1053 flow [2024-06-04 15:25:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:09,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:25:09,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:25:09,409 INFO L175 Difference]: Start difference. First operand has 124 places, 104 transitions, 779 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:25:09,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 120 transitions, 1053 flow [2024-06-04 15:25:09,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 120 transitions, 988 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:09,446 INFO L231 Difference]: Finished difference. Result has 127 places, 104 transitions, 790 flow [2024-06-04 15:25:09,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=790, PETRI_PLACES=127, PETRI_TRANSITIONS=104} [2024-06-04 15:25:09,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-04 15:25:09,447 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 104 transitions, 790 flow [2024-06-04 15:25:09,447 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) [2024-06-04 15:25:09,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:09,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:09,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:25:09,447 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)] === [2024-06-04 15:25:09,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1523338263, now seen corresponding path program 1 times [2024-06-04 15:25:09,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:09,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725177054] [2024-06-04 15:25:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:09,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:10,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:10,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725177054] [2024-06-04 15:25:10,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725177054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:10,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:10,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:10,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109682425] [2024-06-04 15:25:10,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:10,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:10,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:10,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:10,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:10,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 104 transitions, 790 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) [2024-06-04 15:25:10,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:10,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:10,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:10,594 INFO L124 PetriNetUnfolderBase]: 345/613 cut-off events. [2024-06-04 15:25:10,594 INFO L125 PetriNetUnfolderBase]: For 22820/22820 co-relation queries the response was YES. [2024-06-04 15:25:10,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3280 conditions, 613 events. 345/613 cut-off events. For 22820/22820 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2576 event pairs, 51 based on Foata normal form. 3/614 useless extension candidates. Maximal degree in co-relation 3216. Up to 317 conditions per place. [2024-06-04 15:25:10,598 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 75 selfloop transitions, 58 changer transitions 0/135 dead transitions. [2024-06-04 15:25:10,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 1232 flow [2024-06-04 15:25:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:25:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:25:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:25:10,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:25:10,599 INFO L175 Difference]: Start difference. First operand has 127 places, 104 transitions, 790 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:25:10,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 1232 flow [2024-06-04 15:25:10,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 135 transitions, 1162 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:10,635 INFO L231 Difference]: Finished difference. Result has 133 places, 110 transitions, 907 flow [2024-06-04 15:25:10,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=907, PETRI_PLACES=133, PETRI_TRANSITIONS=110} [2024-06-04 15:25:10,635 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-04 15:25:10,635 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 110 transitions, 907 flow [2024-06-04 15:25:10,636 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) [2024-06-04 15:25:10,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:10,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:10,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:25:10,636 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)] === [2024-06-04 15:25:10,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:10,637 INFO L85 PathProgramCache]: Analyzing trace with hash 183148420, now seen corresponding path program 4 times [2024-06-04 15:25:10,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584671689] [2024-06-04 15:25:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:10,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:11,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:11,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584671689] [2024-06-04 15:25:11,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584671689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:11,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:11,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:11,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635330726] [2024-06-04 15:25:11,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:11,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:11,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:11,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:11,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:11,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:11,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 110 transitions, 907 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) [2024-06-04 15:25:11,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:11,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:11,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:11,757 INFO L124 PetriNetUnfolderBase]: 349/621 cut-off events. [2024-06-04 15:25:11,757 INFO L125 PetriNetUnfolderBase]: For 23287/23287 co-relation queries the response was YES. [2024-06-04 15:25:11,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 621 events. 349/621 cut-off events. For 23287/23287 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2605 event pairs, 61 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 3478. Up to 542 conditions per place. [2024-06-04 15:25:11,761 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 96 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2024-06-04 15:25:11,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 1188 flow [2024-06-04 15:25:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 15:25:11,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 15:25:11,762 INFO L175 Difference]: Start difference. First operand has 133 places, 110 transitions, 907 flow. Second operand 9 states and 107 transitions. [2024-06-04 15:25:11,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 1188 flow [2024-06-04 15:25:11,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 124 transitions, 1106 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:11,811 INFO L231 Difference]: Finished difference. Result has 134 places, 111 transitions, 890 flow [2024-06-04 15:25:11,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=890, PETRI_PLACES=134, PETRI_TRANSITIONS=111} [2024-06-04 15:25:11,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-04 15:25:11,812 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 111 transitions, 890 flow [2024-06-04 15:25:11,812 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) [2024-06-04 15:25:11,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:11,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:11,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:25:11,812 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)] === [2024-06-04 15:25:11,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash -676468626, now seen corresponding path program 5 times [2024-06-04 15:25:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:11,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557507609] [2024-06-04 15:25:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:11,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:12,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:12,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557507609] [2024-06-04 15:25:12,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557507609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:12,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:12,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:12,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840606146] [2024-06-04 15:25:12,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:12,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:12,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:12,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:12,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:12,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:12,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 111 transitions, 890 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) [2024-06-04 15:25:12,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:12,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:12,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:12,825 INFO L124 PetriNetUnfolderBase]: 360/642 cut-off events. [2024-06-04 15:25:12,825 INFO L125 PetriNetUnfolderBase]: For 26069/26069 co-relation queries the response was YES. [2024-06-04 15:25:12,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3718 conditions, 642 events. 360/642 cut-off events. For 26069/26069 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2756 event pairs, 62 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 3650. Up to 534 conditions per place. [2024-06-04 15:25:12,828 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 31 changer transitions 0/128 dead transitions. [2024-06-04 15:25:12,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 128 transitions, 1278 flow [2024-06-04 15:25:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:25:12,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:25:12,838 INFO L175 Difference]: Start difference. First operand has 134 places, 111 transitions, 890 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:25:12,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 128 transitions, 1278 flow [2024-06-04 15:25:12,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 1224 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:12,876 INFO L231 Difference]: Finished difference. Result has 136 places, 113 transitions, 922 flow [2024-06-04 15:25:12,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=136, PETRI_TRANSITIONS=113} [2024-06-04 15:25:12,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-04 15:25:12,877 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 113 transitions, 922 flow [2024-06-04 15:25:12,877 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) [2024-06-04 15:25:12,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:12,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:12,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:25:12,878 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)] === [2024-06-04 15:25:12,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:12,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1900654170, now seen corresponding path program 6 times [2024-06-04 15:25:12,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:12,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469686598] [2024-06-04 15:25:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:12,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:13,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:13,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469686598] [2024-06-04 15:25:13,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469686598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:13,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:13,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:13,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045915501] [2024-06-04 15:25:13,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:13,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:13,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:13,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 113 transitions, 922 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) [2024-06-04 15:25:13,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:13,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:13,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:13,983 INFO L124 PetriNetUnfolderBase]: 357/637 cut-off events. [2024-06-04 15:25:13,983 INFO L125 PetriNetUnfolderBase]: For 25543/25543 co-relation queries the response was YES. [2024-06-04 15:25:13,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 637 events. 357/637 cut-off events. For 25543/25543 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2729 event pairs, 63 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 3593. Up to 546 conditions per place. [2024-06-04 15:25:13,987 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 94 selfloop transitions, 31 changer transitions 0/127 dead transitions. [2024-06-04 15:25:13,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 127 transitions, 1204 flow [2024-06-04 15:25:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:25:13,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:25:13,988 INFO L175 Difference]: Start difference. First operand has 136 places, 113 transitions, 922 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:25:13,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 127 transitions, 1204 flow [2024-06-04 15:25:14,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 127 transitions, 1151 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:14,027 INFO L231 Difference]: Finished difference. Result has 140 places, 113 transitions, 937 flow [2024-06-04 15:25:14,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=937, PETRI_PLACES=140, PETRI_TRANSITIONS=113} [2024-06-04 15:25:14,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-04 15:25:14,030 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 113 transitions, 937 flow [2024-06-04 15:25:14,031 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) [2024-06-04 15:25:14,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:14,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:14,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:25:14,032 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)] === [2024-06-04 15:25:14,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:14,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1673368380, now seen corresponding path program 7 times [2024-06-04 15:25:14,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:14,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329003491] [2024-06-04 15:25:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:14,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:14,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:14,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329003491] [2024-06-04 15:25:14,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329003491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:14,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:14,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:14,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984782126] [2024-06-04 15:25:14,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:14,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:14,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:14,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:14,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:14,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:14,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 113 transitions, 937 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) [2024-06-04 15:25:14,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:14,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:14,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:15,054 INFO L124 PetriNetUnfolderBase]: 361/645 cut-off events. [2024-06-04 15:25:15,055 INFO L125 PetriNetUnfolderBase]: For 26686/26686 co-relation queries the response was YES. [2024-06-04 15:25:15,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 645 events. 361/645 cut-off events. For 26686/26686 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2771 event pairs, 42 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 3679. Up to 507 conditions per place. [2024-06-04 15:25:15,059 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 96 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-06-04 15:25:15,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 135 transitions, 1352 flow [2024-06-04 15:25:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-04 15:25:15,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:25:15,060 INFO L175 Difference]: Start difference. First operand has 140 places, 113 transitions, 937 flow. Second operand 9 states and 117 transitions. [2024-06-04 15:25:15,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 135 transitions, 1352 flow [2024-06-04 15:25:15,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 135 transitions, 1294 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:15,105 INFO L231 Difference]: Finished difference. Result has 141 places, 114 transitions, 968 flow [2024-06-04 15:25:15,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=141, PETRI_TRANSITIONS=114} [2024-06-04 15:25:15,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-04 15:25:15,106 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 114 transitions, 968 flow [2024-06-04 15:25:15,106 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) [2024-06-04 15:25:15,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:15,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:15,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:25:15,106 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)] === [2024-06-04 15:25:15,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1673372255, now seen corresponding path program 2 times [2024-06-04 15:25:15,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:15,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993568187] [2024-06-04 15:25:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:15,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:15,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993568187] [2024-06-04 15:25:15,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993568187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:15,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:15,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:15,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229611268] [2024-06-04 15:25:15,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:15,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:15,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:15,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:15,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:15,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 114 transitions, 968 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) [2024-06-04 15:25:15,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:15,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:15,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:16,316 INFO L124 PetriNetUnfolderBase]: 370/660 cut-off events. [2024-06-04 15:25:16,316 INFO L125 PetriNetUnfolderBase]: For 28920/28920 co-relation queries the response was YES. [2024-06-04 15:25:16,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 660 events. 370/660 cut-off events. For 28920/28920 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2866 event pairs, 47 based on Foata normal form. 3/661 useless extension candidates. Maximal degree in co-relation 3802. Up to 391 conditions per place. [2024-06-04 15:25:16,319 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 88 selfloop transitions, 56 changer transitions 0/146 dead transitions. [2024-06-04 15:25:16,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 146 transitions, 1453 flow [2024-06-04 15:25:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:25:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:25:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-04 15:25:16,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 15:25:16,320 INFO L175 Difference]: Start difference. First operand has 141 places, 114 transitions, 968 flow. Second operand 11 states and 148 transitions. [2024-06-04 15:25:16,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 146 transitions, 1453 flow [2024-06-04 15:25:16,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 146 transitions, 1319 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:25:16,364 INFO L231 Difference]: Finished difference. Result has 143 places, 117 transitions, 976 flow [2024-06-04 15:25:16,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=976, PETRI_PLACES=143, PETRI_TRANSITIONS=117} [2024-06-04 15:25:16,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-04 15:25:16,364 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 117 transitions, 976 flow [2024-06-04 15:25:16,364 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) [2024-06-04 15:25:16,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:16,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:16,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:25:16,364 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)] === [2024-06-04 15:25:16,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:16,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1673372100, now seen corresponding path program 8 times [2024-06-04 15:25:16,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:16,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979403136] [2024-06-04 15:25:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:16,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:17,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:17,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979403136] [2024-06-04 15:25:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979403136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:17,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:17,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949228767] [2024-06-04 15:25:17,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:17,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:17,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:17,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:17,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:17,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:17,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 117 transitions, 976 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) [2024-06-04 15:25:17,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:17,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:17,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:17,319 INFO L124 PetriNetUnfolderBase]: 377/673 cut-off events. [2024-06-04 15:25:17,320 INFO L125 PetriNetUnfolderBase]: For 29254/29254 co-relation queries the response was YES. [2024-06-04 15:25:17,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3910 conditions, 673 events. 377/673 cut-off events. For 29254/29254 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2932 event pairs, 65 based on Foata normal form. 2/673 useless extension candidates. Maximal degree in co-relation 3840. Up to 573 conditions per place. [2024-06-04 15:25:17,323 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 37 changer transitions 0/139 dead transitions. [2024-06-04 15:25:17,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 139 transitions, 1322 flow [2024-06-04 15:25:17,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 15:25:17,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 15:25:17,324 INFO L175 Difference]: Start difference. First operand has 143 places, 117 transitions, 976 flow. Second operand 9 states and 115 transitions. [2024-06-04 15:25:17,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 139 transitions, 1322 flow [2024-06-04 15:25:17,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 1198 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:25:17,371 INFO L231 Difference]: Finished difference. Result has 143 places, 120 transitions, 958 flow [2024-06-04 15:25:17,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=143, PETRI_TRANSITIONS=120} [2024-06-04 15:25:17,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-04 15:25:17,371 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 120 transitions, 958 flow [2024-06-04 15:25:17,372 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) [2024-06-04 15:25:17,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:17,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:17,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:25:17,372 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)] === [2024-06-04 15:25:17,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1673516250, now seen corresponding path program 9 times [2024-06-04 15:25:17,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:17,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630204427] [2024-06-04 15:25:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:17,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:18,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:18,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630204427] [2024-06-04 15:25:18,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630204427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:18,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:18,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:18,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967273471] [2024-06-04 15:25:18,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:18,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:18,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:18,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:18,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:18,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 120 transitions, 958 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) [2024-06-04 15:25:18,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:18,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:18,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:18,371 INFO L124 PetriNetUnfolderBase]: 381/681 cut-off events. [2024-06-04 15:25:18,371 INFO L125 PetriNetUnfolderBase]: For 30396/30396 co-relation queries the response was YES. [2024-06-04 15:25:18,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3863 conditions, 681 events. 381/681 cut-off events. For 30396/30396 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2983 event pairs, 65 based on Foata normal form. 2/681 useless extension candidates. Maximal degree in co-relation 3792. Up to 602 conditions per place. [2024-06-04 15:25:18,375 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 29 changer transitions 0/137 dead transitions. [2024-06-04 15:25:18,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 137 transitions, 1275 flow [2024-06-04 15:25:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:25:18,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:25:18,376 INFO L175 Difference]: Start difference. First operand has 143 places, 120 transitions, 958 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:25:18,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 137 transitions, 1275 flow [2024-06-04 15:25:18,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 137 transitions, 1215 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 15:25:18,425 INFO L231 Difference]: Finished difference. Result has 147 places, 121 transitions, 971 flow [2024-06-04 15:25:18,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=971, PETRI_PLACES=147, PETRI_TRANSITIONS=121} [2024-06-04 15:25:18,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-04 15:25:18,426 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 121 transitions, 971 flow [2024-06-04 15:25:18,426 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) [2024-06-04 15:25:18,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:18,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:18,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:25:18,426 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)] === [2024-06-04 15:25:18,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1679086175, now seen corresponding path program 3 times [2024-06-04 15:25:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205272980] [2024-06-04 15:25:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:19,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205272980] [2024-06-04 15:25:19,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205272980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:19,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:19,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:19,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937364139] [2024-06-04 15:25:19,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:19,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:19,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:19,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:19,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 121 transitions, 971 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) [2024-06-04 15:25:19,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:19,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:19,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:19,454 INFO L124 PetriNetUnfolderBase]: 390/696 cut-off events. [2024-06-04 15:25:19,455 INFO L125 PetriNetUnfolderBase]: For 32836/32836 co-relation queries the response was YES. [2024-06-04 15:25:19,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 696 events. 390/696 cut-off events. For 32836/32836 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3084 event pairs, 56 based on Foata normal form. 3/697 useless extension candidates. Maximal degree in co-relation 3881. Up to 495 conditions per place. [2024-06-04 15:25:19,459 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 42 changer transitions 0/143 dead transitions. [2024-06-04 15:25:19,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 143 transitions, 1336 flow [2024-06-04 15:25:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:19,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-04 15:25:19,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:25:19,460 INFO L175 Difference]: Start difference. First operand has 147 places, 121 transitions, 971 flow. Second operand 9 states and 117 transitions. [2024-06-04 15:25:19,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 143 transitions, 1336 flow [2024-06-04 15:25:19,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 143 transitions, 1258 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:19,512 INFO L231 Difference]: Finished difference. Result has 148 places, 124 transitions, 1012 flow [2024-06-04 15:25:19,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1012, PETRI_PLACES=148, PETRI_TRANSITIONS=124} [2024-06-04 15:25:19,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-04 15:25:19,512 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 124 transitions, 1012 flow [2024-06-04 15:25:19,512 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) [2024-06-04 15:25:19,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:19,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:19,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:25:19,513 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)] === [2024-06-04 15:25:19,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1678878785, now seen corresponding path program 4 times [2024-06-04 15:25:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:19,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185452547] [2024-06-04 15:25:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:20,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:20,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185452547] [2024-06-04 15:25:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185452547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:20,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809106509] [2024-06-04 15:25:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:20,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:20,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:20,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:20,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:20,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 124 transitions, 1012 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) [2024-06-04 15:25:20,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:20,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:20,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:20,461 INFO L124 PetriNetUnfolderBase]: 398/709 cut-off events. [2024-06-04 15:25:20,461 INFO L125 PetriNetUnfolderBase]: For 33124/33124 co-relation queries the response was YES. [2024-06-04 15:25:20,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 709 events. 398/709 cut-off events. For 33124/33124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3150 event pairs, 56 based on Foata normal form. 1/708 useless extension candidates. Maximal degree in co-relation 4086. Up to 588 conditions per place. [2024-06-04 15:25:20,465 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 38 changer transitions 0/156 dead transitions. [2024-06-04 15:25:20,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 156 transitions, 1615 flow [2024-06-04 15:25:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 15:25:20,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:25:20,466 INFO L175 Difference]: Start difference. First operand has 148 places, 124 transitions, 1012 flow. Second operand 9 states and 112 transitions. [2024-06-04 15:25:20,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 156 transitions, 1615 flow [2024-06-04 15:25:20,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 1505 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:20,518 INFO L231 Difference]: Finished difference. Result has 154 places, 141 transitions, 1205 flow [2024-06-04 15:25:20,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=154, PETRI_TRANSITIONS=141} [2024-06-04 15:25:20,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-04 15:25:20,518 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 141 transitions, 1205 flow [2024-06-04 15:25:20,518 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) [2024-06-04 15:25:20,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:20,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:20,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:25:20,518 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)] === [2024-06-04 15:25:20,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:20,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1678878630, now seen corresponding path program 10 times [2024-06-04 15:25:20,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:20,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743544429] [2024-06-04 15:25:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:20,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:21,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:21,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743544429] [2024-06-04 15:25:21,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743544429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:21,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:21,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:21,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865025812] [2024-06-04 15:25:21,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:21,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:21,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:21,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:21,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:21,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 141 transitions, 1205 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) [2024-06-04 15:25:21,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:21,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:21,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:21,515 INFO L124 PetriNetUnfolderBase]: 402/717 cut-off events. [2024-06-04 15:25:21,515 INFO L125 PetriNetUnfolderBase]: For 35898/35898 co-relation queries the response was YES. [2024-06-04 15:25:21,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4323 conditions, 717 events. 402/717 cut-off events. For 35898/35898 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3178 event pairs, 63 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 4245. Up to 638 conditions per place. [2024-06-04 15:25:21,520 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 127 selfloop transitions, 26 changer transitions 0/155 dead transitions. [2024-06-04 15:25:21,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 155 transitions, 1552 flow [2024-06-04 15:25:21,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 15:25:21,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-04 15:25:21,521 INFO L175 Difference]: Start difference. First operand has 154 places, 141 transitions, 1205 flow. Second operand 9 states and 106 transitions. [2024-06-04 15:25:21,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 155 transitions, 1552 flow [2024-06-04 15:25:21,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 155 transitions, 1510 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-04 15:25:21,583 INFO L231 Difference]: Finished difference. Result has 160 places, 142 transitions, 1232 flow [2024-06-04 15:25:21,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1232, PETRI_PLACES=160, PETRI_TRANSITIONS=142} [2024-06-04 15:25:21,583 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-04 15:25:21,584 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 142 transitions, 1232 flow [2024-06-04 15:25:21,584 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) [2024-06-04 15:25:21,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:21,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:25:21,584 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)] === [2024-06-04 15:25:21,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1678884365, now seen corresponding path program 5 times [2024-06-04 15:25:21,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:21,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520558258] [2024-06-04 15:25:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:22,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:22,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520558258] [2024-06-04 15:25:22,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520558258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:22,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:22,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872532960] [2024-06-04 15:25:22,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:22,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:22,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:22,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:22,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:22,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 142 transitions, 1232 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) [2024-06-04 15:25:22,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:22,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:22,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:22,579 INFO L124 PetriNetUnfolderBase]: 400/714 cut-off events. [2024-06-04 15:25:22,579 INFO L125 PetriNetUnfolderBase]: For 34684/34684 co-relation queries the response was YES. [2024-06-04 15:25:22,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4260 conditions, 714 events. 400/714 cut-off events. For 34684/34684 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3187 event pairs, 56 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 4181. Up to 603 conditions per place. [2024-06-04 15:25:22,582 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 34 changer transitions 0/157 dead transitions. [2024-06-04 15:25:22,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 157 transitions, 1589 flow [2024-06-04 15:25:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:25:22,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:25:22,583 INFO L175 Difference]: Start difference. First operand has 160 places, 142 transitions, 1232 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:25:22,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 157 transitions, 1589 flow [2024-06-04 15:25:22,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 157 transitions, 1529 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:22,651 INFO L231 Difference]: Finished difference. Result has 162 places, 143 transitions, 1250 flow [2024-06-04 15:25:22,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1250, PETRI_PLACES=162, PETRI_TRANSITIONS=143} [2024-06-04 15:25:22,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-04 15:25:22,651 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 143 transitions, 1250 flow [2024-06-04 15:25:22,651 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) [2024-06-04 15:25:22,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:22,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:22,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:25:22,652 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)] === [2024-06-04 15:25:22,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash -680609174, now seen corresponding path program 11 times [2024-06-04 15:25:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:22,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966856011] [2024-06-04 15:25:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:22,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:23,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:23,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966856011] [2024-06-04 15:25:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966856011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:23,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:23,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655019636] [2024-06-04 15:25:23,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:23,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:23,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:23,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:23,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:23,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 143 transitions, 1250 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) [2024-06-04 15:25:23,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:23,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:23,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:23,579 INFO L124 PetriNetUnfolderBase]: 397/709 cut-off events. [2024-06-04 15:25:23,580 INFO L125 PetriNetUnfolderBase]: For 34648/34648 co-relation queries the response was YES. [2024-06-04 15:25:23,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4176 conditions, 709 events. 397/709 cut-off events. For 34648/34648 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3146 event pairs, 63 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 4096. Up to 679 conditions per place. [2024-06-04 15:25:23,584 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 137 selfloop transitions, 14 changer transitions 0/153 dead transitions. [2024-06-04 15:25:23,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 153 transitions, 1574 flow [2024-06-04 15:25:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 15:25:23,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 15:25:23,584 INFO L175 Difference]: Start difference. First operand has 162 places, 143 transitions, 1250 flow. Second operand 9 states and 98 transitions. [2024-06-04 15:25:23,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 153 transitions, 1574 flow [2024-06-04 15:25:23,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 153 transitions, 1501 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:23,639 INFO L231 Difference]: Finished difference. Result has 165 places, 143 transitions, 1209 flow [2024-06-04 15:25:23,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1209, PETRI_PLACES=165, PETRI_TRANSITIONS=143} [2024-06-04 15:25:23,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-04 15:25:23,640 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 143 transitions, 1209 flow [2024-06-04 15:25:23,640 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) [2024-06-04 15:25:23,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:23,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:23,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:25:23,640 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)] === [2024-06-04 15:25:23,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash -575037632, now seen corresponding path program 1 times [2024-06-04 15:25:23,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:23,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375916032] [2024-06-04 15:25:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:24,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:24,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375916032] [2024-06-04 15:25:24,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375916032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:24,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:24,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:24,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788021964] [2024-06-04 15:25:24,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:24,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:24,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:24,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:24,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:24,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 143 transitions, 1209 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) [2024-06-04 15:25:24,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:24,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:24,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:24,573 INFO L124 PetriNetUnfolderBase]: 393/703 cut-off events. [2024-06-04 15:25:24,573 INFO L125 PetriNetUnfolderBase]: For 33017/33017 co-relation queries the response was YES. [2024-06-04 15:25:24,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 703 events. 393/703 cut-off events. For 33017/33017 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3120 event pairs, 56 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 3930. Up to 663 conditions per place. [2024-06-04 15:25:24,577 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 140 selfloop transitions, 15 changer transitions 0/157 dead transitions. [2024-06-04 15:25:24,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 157 transitions, 1559 flow [2024-06-04 15:25:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 15:25:24,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 15:25:24,578 INFO L175 Difference]: Start difference. First operand has 165 places, 143 transitions, 1209 flow. Second operand 9 states and 101 transitions. [2024-06-04 15:25:24,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 157 transitions, 1559 flow [2024-06-04 15:25:24,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 157 transitions, 1478 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:25:24,630 INFO L231 Difference]: Finished difference. Result has 165 places, 145 transitions, 1181 flow [2024-06-04 15:25:24,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1181, PETRI_PLACES=165, PETRI_TRANSITIONS=145} [2024-06-04 15:25:24,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-04 15:25:24,631 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 145 transitions, 1181 flow [2024-06-04 15:25:24,631 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) [2024-06-04 15:25:24,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:24,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:24,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:25:24,631 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)] === [2024-06-04 15:25:24,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash -680609019, now seen corresponding path program 6 times [2024-06-04 15:25:24,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:24,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353867375] [2024-06-04 15:25:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:24,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:25,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:25,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353867375] [2024-06-04 15:25:25,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353867375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:25,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:25,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:25,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110766659] [2024-06-04 15:25:25,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:25,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:25,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:25,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:25,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:25,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:25,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 145 transitions, 1181 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) [2024-06-04 15:25:25,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:25,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:25,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:25,555 INFO L124 PetriNetUnfolderBase]: 396/708 cut-off events. [2024-06-04 15:25:25,555 INFO L125 PetriNetUnfolderBase]: For 31412/31412 co-relation queries the response was YES. [2024-06-04 15:25:25,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 708 events. 396/708 cut-off events. For 31412/31412 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3149 event pairs, 56 based on Foata normal form. 1/707 useless extension candidates. Maximal degree in co-relation 3930. Up to 655 conditions per place. [2024-06-04 15:25:25,560 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 23 changer transitions 0/161 dead transitions. [2024-06-04 15:25:25,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 161 transitions, 1681 flow [2024-06-04 15:25:25,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 15:25:25,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 15:25:25,561 INFO L175 Difference]: Start difference. First operand has 165 places, 145 transitions, 1181 flow. Second operand 9 states and 103 transitions. [2024-06-04 15:25:25,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 161 transitions, 1681 flow [2024-06-04 15:25:25,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 161 transitions, 1644 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:25,608 INFO L231 Difference]: Finished difference. Result has 168 places, 151 transitions, 1261 flow [2024-06-04 15:25:25,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1261, PETRI_PLACES=168, PETRI_TRANSITIONS=151} [2024-06-04 15:25:25,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-04 15:25:25,609 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 151 transitions, 1261 flow [2024-06-04 15:25:25,609 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) [2024-06-04 15:25:25,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:25,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:25,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:25:25,609 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)] === [2024-06-04 15:25:25,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash -423901119, now seen corresponding path program 7 times [2024-06-04 15:25:25,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:25,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179277848] [2024-06-04 15:25:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:25,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:26,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179277848] [2024-06-04 15:25:26,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179277848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:26,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:26,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:26,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284298428] [2024-06-04 15:25:26,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:26,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:26,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:26,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:26,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:26,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:26,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 151 transitions, 1261 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) [2024-06-04 15:25:26,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:26,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:26,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:26,601 INFO L124 PetriNetUnfolderBase]: 405/723 cut-off events. [2024-06-04 15:25:26,601 INFO L125 PetriNetUnfolderBase]: For 35585/35585 co-relation queries the response was YES. [2024-06-04 15:25:26,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 723 events. 405/723 cut-off events. For 35585/35585 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3234 event pairs, 52 based on Foata normal form. 3/724 useless extension candidates. Maximal degree in co-relation 4081. Up to 672 conditions per place. [2024-06-04 15:25:26,606 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 19 changer transitions 0/169 dead transitions. [2024-06-04 15:25:26,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 169 transitions, 1688 flow [2024-06-04 15:25:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 15:25:26,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 15:25:26,607 INFO L175 Difference]: Start difference. First operand has 168 places, 151 transitions, 1261 flow. Second operand 9 states and 104 transitions. [2024-06-04 15:25:26,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 169 transitions, 1688 flow [2024-06-04 15:25:26,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 169 transitions, 1641 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 15:25:26,679 INFO L231 Difference]: Finished difference. Result has 173 places, 155 transitions, 1322 flow [2024-06-04 15:25:26,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1322, PETRI_PLACES=173, PETRI_TRANSITIONS=155} [2024-06-04 15:25:26,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-04 15:25:26,680 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 155 transitions, 1322 flow [2024-06-04 15:25:26,680 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) [2024-06-04 15:25:26,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:26,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:26,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:25:26,680 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)] === [2024-06-04 15:25:26,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:26,681 INFO L85 PathProgramCache]: Analyzing trace with hash -680401629, now seen corresponding path program 8 times [2024-06-04 15:25:26,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:26,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700498888] [2024-06-04 15:25:26,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:26,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:27,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:27,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700498888] [2024-06-04 15:25:27,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700498888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:27,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:27,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:27,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957368657] [2024-06-04 15:25:27,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:27,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:27,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:27,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:27,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:27,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 155 transitions, 1322 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) [2024-06-04 15:25:27,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:27,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:27,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:27,718 INFO L124 PetriNetUnfolderBase]: 414/738 cut-off events. [2024-06-04 15:25:27,718 INFO L125 PetriNetUnfolderBase]: For 37022/37022 co-relation queries the response was YES. [2024-06-04 15:25:27,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 738 events. 414/738 cut-off events. For 37022/37022 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3341 event pairs, 52 based on Foata normal form. 3/739 useless extension candidates. Maximal degree in co-relation 4233. Up to 650 conditions per place. [2024-06-04 15:25:27,722 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 145 selfloop transitions, 28 changer transitions 0/175 dead transitions. [2024-06-04 15:25:27,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 1771 flow [2024-06-04 15:25:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:25:27,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:25:27,723 INFO L175 Difference]: Start difference. First operand has 173 places, 155 transitions, 1322 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:25:27,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 1771 flow [2024-06-04 15:25:27,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 175 transitions, 1717 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:27,783 INFO L231 Difference]: Finished difference. Result has 175 places, 159 transitions, 1396 flow [2024-06-04 15:25:27,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1396, PETRI_PLACES=175, PETRI_TRANSITIONS=159} [2024-06-04 15:25:27,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-04 15:25:27,783 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 159 transitions, 1396 flow [2024-06-04 15:25:27,783 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) [2024-06-04 15:25:27,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:27,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:27,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:25:27,784 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)] === [2024-06-04 15:25:27,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash -680603439, now seen corresponding path program 9 times [2024-06-04 15:25:27,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:27,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311182176] [2024-06-04 15:25:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:27,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:28,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:28,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311182176] [2024-06-04 15:25:28,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311182176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:28,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:28,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102653813] [2024-06-04 15:25:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:28,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:28,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:28,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:28,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 159 transitions, 1396 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) [2024-06-04 15:25:28,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:28,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:28,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:28,735 INFO L124 PetriNetUnfolderBase]: 412/735 cut-off events. [2024-06-04 15:25:28,736 INFO L125 PetriNetUnfolderBase]: For 33691/33691 co-relation queries the response was YES. [2024-06-04 15:25:28,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 735 events. 412/735 cut-off events. For 33691/33691 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3305 event pairs, 58 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 4201. Up to 693 conditions per place. [2024-06-04 15:25:28,740 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 21 changer transitions 0/169 dead transitions. [2024-06-04 15:25:28,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 169 transitions, 1756 flow [2024-06-04 15:25:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:28,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 15:25:28,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 15:25:28,741 INFO L175 Difference]: Start difference. First operand has 175 places, 159 transitions, 1396 flow. Second operand 9 states and 101 transitions. [2024-06-04 15:25:28,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 169 transitions, 1756 flow [2024-06-04 15:25:28,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 169 transitions, 1670 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:28,797 INFO L231 Difference]: Finished difference. Result has 177 places, 160 transitions, 1363 flow [2024-06-04 15:25:28,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1363, PETRI_PLACES=177, PETRI_TRANSITIONS=160} [2024-06-04 15:25:28,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-04 15:25:28,798 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 160 transitions, 1363 flow [2024-06-04 15:25:28,798 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) [2024-06-04 15:25:28,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:28,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:28,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:25:28,798 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)] === [2024-06-04 15:25:28,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:28,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1536390017, now seen corresponding path program 1 times [2024-06-04 15:25:28,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:28,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028585922] [2024-06-04 15:25:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:28,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:29,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:29,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028585922] [2024-06-04 15:25:29,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028585922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:29,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:29,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:29,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908324719] [2024-06-04 15:25:29,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:29,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:29,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:29,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:29,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:29,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 160 transitions, 1363 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:29,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:29,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:29,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:29,920 INFO L124 PetriNetUnfolderBase]: 459/828 cut-off events. [2024-06-04 15:25:29,920 INFO L125 PetriNetUnfolderBase]: For 59074/59074 co-relation queries the response was YES. [2024-06-04 15:25:29,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5357 conditions, 828 events. 459/828 cut-off events. For 59074/59074 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3820 event pairs, 44 based on Foata normal form. 2/828 useless extension candidates. Maximal degree in co-relation 5269. Up to 313 conditions per place. [2024-06-04 15:25:29,926 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 80 changer transitions 0/191 dead transitions. [2024-06-04 15:25:29,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 191 transitions, 2079 flow [2024-06-04 15:25:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-04 15:25:29,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-04 15:25:29,926 INFO L175 Difference]: Start difference. First operand has 177 places, 160 transitions, 1363 flow. Second operand 10 states and 133 transitions. [2024-06-04 15:25:29,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 191 transitions, 2079 flow [2024-06-04 15:25:30,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 191 transitions, 2032 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:30,017 INFO L231 Difference]: Finished difference. Result has 181 places, 161 transitions, 1488 flow [2024-06-04 15:25:30,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1488, PETRI_PLACES=181, PETRI_TRANSITIONS=161} [2024-06-04 15:25:30,017 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-04 15:25:30,017 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 161 transitions, 1488 flow [2024-06-04 15:25:30,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:30,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:30,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:30,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:25:30,018 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)] === [2024-06-04 15:25:30,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1478297567, now seen corresponding path program 2 times [2024-06-04 15:25:30,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:30,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438121608] [2024-06-04 15:25:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:30,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:30,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438121608] [2024-06-04 15:25:30,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438121608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:30,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:30,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649871850] [2024-06-04 15:25:30,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:30,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:30,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:30,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:30,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:30,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 161 transitions, 1488 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:30,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:30,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:30,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:31,047 INFO L124 PetriNetUnfolderBase]: 473/854 cut-off events. [2024-06-04 15:25:31,047 INFO L125 PetriNetUnfolderBase]: For 64989/64989 co-relation queries the response was YES. [2024-06-04 15:25:31,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5781 conditions, 854 events. 473/854 cut-off events. For 64989/64989 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4059 event pairs, 78 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 5692. Up to 628 conditions per place. [2024-06-04 15:25:31,053 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 61 changer transitions 0/187 dead transitions. [2024-06-04 15:25:31,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 187 transitions, 2069 flow [2024-06-04 15:25:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:25:31,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:25:31,054 INFO L175 Difference]: Start difference. First operand has 181 places, 161 transitions, 1488 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:25:31,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 187 transitions, 2069 flow [2024-06-04 15:25:31,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 187 transitions, 1879 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:31,162 INFO L231 Difference]: Finished difference. Result has 184 places, 167 transitions, 1519 flow [2024-06-04 15:25:31,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=184, PETRI_TRANSITIONS=167} [2024-06-04 15:25:31,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-04 15:25:31,163 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 167 transitions, 1519 flow [2024-06-04 15:25:31,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:31,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:31,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:31,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:25:31,163 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)] === [2024-06-04 15:25:31,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:31,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1478177597, now seen corresponding path program 3 times [2024-06-04 15:25:31,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:31,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869599243] [2024-06-04 15:25:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:31,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:31,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:31,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869599243] [2024-06-04 15:25:31,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869599243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:31,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:31,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:31,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077745768] [2024-06-04 15:25:31,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:31,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:31,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:31,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:31,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:31,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 167 transitions, 1519 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:31,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:31,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:31,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:32,178 INFO L124 PetriNetUnfolderBase]: 477/862 cut-off events. [2024-06-04 15:25:32,179 INFO L125 PetriNetUnfolderBase]: For 67074/67074 co-relation queries the response was YES. [2024-06-04 15:25:32,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5824 conditions, 862 events. 477/862 cut-off events. For 67074/67074 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4093 event pairs, 86 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 5734. Up to 671 conditions per place. [2024-06-04 15:25:32,185 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 60 changer transitions 0/185 dead transitions. [2024-06-04 15:25:32,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 185 transitions, 1932 flow [2024-06-04 15:25:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 15:25:32,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 15:25:32,186 INFO L175 Difference]: Start difference. First operand has 184 places, 167 transitions, 1519 flow. Second operand 10 states and 122 transitions. [2024-06-04 15:25:32,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 185 transitions, 1932 flow [2024-06-04 15:25:32,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 185 transitions, 1897 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 15:25:32,323 INFO L231 Difference]: Finished difference. Result has 190 places, 168 transitions, 1617 flow [2024-06-04 15:25:32,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1617, PETRI_PLACES=190, PETRI_TRANSITIONS=168} [2024-06-04 15:25:32,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-04 15:25:32,323 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 168 transitions, 1617 flow [2024-06-04 15:25:32,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:32,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:32,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:32,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:25:32,324 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)] === [2024-06-04 15:25:32,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1309280047, now seen corresponding path program 4 times [2024-06-04 15:25:32,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:32,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322570099] [2024-06-04 15:25:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:32,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:33,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:33,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322570099] [2024-06-04 15:25:33,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322570099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:33,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:33,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:33,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364075857] [2024-06-04 15:25:33,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:33,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:33,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:33,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:33,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:33,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 168 transitions, 1617 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:33,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:33,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:33,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:33,553 INFO L124 PetriNetUnfolderBase]: 528/963 cut-off events. [2024-06-04 15:25:33,553 INFO L125 PetriNetUnfolderBase]: For 97917/97917 co-relation queries the response was YES. [2024-06-04 15:25:33,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7158 conditions, 963 events. 528/963 cut-off events. For 97917/97917 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4706 event pairs, 86 based on Foata normal form. 4/965 useless extension candidates. Maximal degree in co-relation 7066. Up to 499 conditions per place. [2024-06-04 15:25:33,561 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 104 selfloop transitions, 97 changer transitions 0/203 dead transitions. [2024-06-04 15:25:33,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 203 transitions, 2387 flow [2024-06-04 15:25:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:25:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:25:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-04 15:25:33,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-04 15:25:33,563 INFO L175 Difference]: Start difference. First operand has 190 places, 168 transitions, 1617 flow. Second operand 12 states and 161 transitions. [2024-06-04 15:25:33,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 203 transitions, 2387 flow [2024-06-04 15:25:33,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 203 transitions, 2261 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:33,692 INFO L231 Difference]: Finished difference. Result has 195 places, 171 transitions, 1746 flow [2024-06-04 15:25:33,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1746, PETRI_PLACES=195, PETRI_TRANSITIONS=171} [2024-06-04 15:25:33,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-04 15:25:33,693 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 171 transitions, 1746 flow [2024-06-04 15:25:33,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:33,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:33,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:33,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:25:33,694 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)] === [2024-06-04 15:25:33,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:33,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1478177411, now seen corresponding path program 1 times [2024-06-04 15:25:33,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:33,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422259034] [2024-06-04 15:25:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:33,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:34,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:34,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422259034] [2024-06-04 15:25:34,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422259034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:34,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:34,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:34,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042533242] [2024-06-04 15:25:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:34,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:34,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:34,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:34,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:34,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 171 transitions, 1746 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:34,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:34,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:34,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:35,192 INFO L124 PetriNetUnfolderBase]: 544/989 cut-off events. [2024-06-04 15:25:35,192 INFO L125 PetriNetUnfolderBase]: For 101624/101624 co-relation queries the response was YES. [2024-06-04 15:25:35,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7594 conditions, 989 events. 544/989 cut-off events. For 101624/101624 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4845 event pairs, 96 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 7500. Up to 636 conditions per place. [2024-06-04 15:25:35,198 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 90 changer transitions 0/202 dead transitions. [2024-06-04 15:25:35,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 202 transitions, 2368 flow [2024-06-04 15:25:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 15:25:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 15:25:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 171 transitions. [2024-06-04 15:25:35,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2024-06-04 15:25:35,199 INFO L175 Difference]: Start difference. First operand has 195 places, 171 transitions, 1746 flow. Second operand 14 states and 171 transitions. [2024-06-04 15:25:35,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 202 transitions, 2368 flow [2024-06-04 15:25:35,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 202 transitions, 2236 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:35,338 INFO L231 Difference]: Finished difference. Result has 202 places, 176 transitions, 1852 flow [2024-06-04 15:25:35,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1852, PETRI_PLACES=202, PETRI_TRANSITIONS=176} [2024-06-04 15:25:35,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-04 15:25:35,339 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 176 transitions, 1852 flow [2024-06-04 15:25:35,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:35,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:35,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:35,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:25:35,340 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)] === [2024-06-04 15:25:35,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:35,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1213910143, now seen corresponding path program 5 times [2024-06-04 15:25:35,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:35,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413935058] [2024-06-04 15:25:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:35,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:36,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:36,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413935058] [2024-06-04 15:25:36,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413935058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:36,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:36,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:36,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93086517] [2024-06-04 15:25:36,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:36,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:36,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:36,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:36,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:36,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 176 transitions, 1852 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:36,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:36,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:36,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:36,550 INFO L124 PetriNetUnfolderBase]: 532/969 cut-off events. [2024-06-04 15:25:36,550 INFO L125 PetriNetUnfolderBase]: For 104989/104989 co-relation queries the response was YES. [2024-06-04 15:25:36,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6927 conditions, 969 events. 532/969 cut-off events. For 104989/104989 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4782 event pairs, 84 based on Foata normal form. 16/983 useless extension candidates. Maximal degree in co-relation 6830. Up to 704 conditions per place. [2024-06-04 15:25:36,557 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 143 selfloop transitions, 48 changer transitions 8/201 dead transitions. [2024-06-04 15:25:36,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 201 transitions, 2355 flow [2024-06-04 15:25:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:25:36,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:25:36,558 INFO L175 Difference]: Start difference. First operand has 202 places, 176 transitions, 1852 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:25:36,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 201 transitions, 2355 flow [2024-06-04 15:25:36,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 201 transitions, 2241 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 15:25:36,713 INFO L231 Difference]: Finished difference. Result has 204 places, 176 transitions, 1861 flow [2024-06-04 15:25:36,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1861, PETRI_PLACES=204, PETRI_TRANSITIONS=176} [2024-06-04 15:25:36,713 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-04 15:25:36,714 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 176 transitions, 1861 flow [2024-06-04 15:25:36,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:36,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:36,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:36,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:25:36,714 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)] === [2024-06-04 15:25:36,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:36,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1213737163, now seen corresponding path program 6 times [2024-06-04 15:25:36,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:36,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826338389] [2024-06-04 15:25:36,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:36,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:37,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:37,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826338389] [2024-06-04 15:25:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826338389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:37,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:37,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:37,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949922117] [2024-06-04 15:25:37,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:37,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:37,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:37,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:37,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:37,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 176 transitions, 1861 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:37,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:37,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:37,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:37,833 INFO L124 PetriNetUnfolderBase]: 521/952 cut-off events. [2024-06-04 15:25:37,834 INFO L125 PetriNetUnfolderBase]: For 80644/80644 co-relation queries the response was YES. [2024-06-04 15:25:37,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6939 conditions, 952 events. 521/952 cut-off events. For 80644/80644 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4687 event pairs, 98 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 6839. Up to 829 conditions per place. [2024-06-04 15:25:37,840 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-04 15:25:37,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 193 transitions, 2314 flow [2024-06-04 15:25:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:37,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:25:37,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:25:37,841 INFO L175 Difference]: Start difference. First operand has 204 places, 176 transitions, 1861 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:25:37,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 193 transitions, 2314 flow [2024-06-04 15:25:37,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 193 transitions, 2207 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:37,979 INFO L231 Difference]: Finished difference. Result has 208 places, 179 transitions, 1886 flow [2024-06-04 15:25:37,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1886, PETRI_PLACES=208, PETRI_TRANSITIONS=179} [2024-06-04 15:25:37,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-04 15:25:37,979 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 179 transitions, 1886 flow [2024-06-04 15:25:37,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:37,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:37,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:37,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:25:37,979 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)] === [2024-06-04 15:25:37,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:37,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1209148543, now seen corresponding path program 7 times [2024-06-04 15:25:37,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:37,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123050241] [2024-06-04 15:25:37,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:37,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:38,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:38,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123050241] [2024-06-04 15:25:38,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123050241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:38,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:38,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:38,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956782320] [2024-06-04 15:25:38,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:38,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:38,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:38,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:38,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 179 transitions, 1886 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:38,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:38,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:38,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:39,165 INFO L124 PetriNetUnfolderBase]: 525/960 cut-off events. [2024-06-04 15:25:39,165 INFO L125 PetriNetUnfolderBase]: For 82613/82613 co-relation queries the response was YES. [2024-06-04 15:25:39,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6969 conditions, 960 events. 525/960 cut-off events. For 82613/82613 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4769 event pairs, 87 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 6867. Up to 649 conditions per place. [2024-06-04 15:25:39,171 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 59 changer transitions 2/202 dead transitions. [2024-06-04 15:25:39,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 202 transitions, 2479 flow [2024-06-04 15:25:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:25:39,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 15:25:39,172 INFO L175 Difference]: Start difference. First operand has 208 places, 179 transitions, 1886 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:25:39,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 202 transitions, 2479 flow [2024-06-04 15:25:39,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 202 transitions, 2413 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:39,301 INFO L231 Difference]: Finished difference. Result has 211 places, 180 transitions, 1953 flow [2024-06-04 15:25:39,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1953, PETRI_PLACES=211, PETRI_TRANSITIONS=180} [2024-06-04 15:25:39,301 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-04 15:25:39,302 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 180 transitions, 1953 flow [2024-06-04 15:25:39,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:39,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:39,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:39,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:25:39,302 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)] === [2024-06-04 15:25:39,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:39,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1209268513, now seen corresponding path program 8 times [2024-06-04 15:25:39,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:39,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068735339] [2024-06-04 15:25:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:39,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:40,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:40,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068735339] [2024-06-04 15:25:40,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068735339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:40,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:40,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889920184] [2024-06-04 15:25:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:40,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:40,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:40,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 180 transitions, 1953 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:40,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:40,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:40,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:40,618 INFO L124 PetriNetUnfolderBase]: 522/955 cut-off events. [2024-06-04 15:25:40,618 INFO L125 PetriNetUnfolderBase]: For 81841/81841 co-relation queries the response was YES. [2024-06-04 15:25:40,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6916 conditions, 955 events. 522/955 cut-off events. For 81841/81841 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4743 event pairs, 87 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 6814. Up to 693 conditions per place. [2024-06-04 15:25:40,626 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 60 changer transitions 2/201 dead transitions. [2024-06-04 15:25:40,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 201 transitions, 2405 flow [2024-06-04 15:25:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:25:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:25:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:25:40,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 15:25:40,628 INFO L175 Difference]: Start difference. First operand has 211 places, 180 transitions, 1953 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:25:40,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 201 transitions, 2405 flow [2024-06-04 15:25:40,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 201 transitions, 2302 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:40,771 INFO L231 Difference]: Finished difference. Result has 217 places, 180 transitions, 1980 flow [2024-06-04 15:25:40,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1980, PETRI_PLACES=217, PETRI_TRANSITIONS=180} [2024-06-04 15:25:40,771 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-04 15:25:40,771 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 180 transitions, 1980 flow [2024-06-04 15:25:40,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:40,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:40,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:40,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:25:40,772 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)] === [2024-06-04 15:25:40,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash 334813217, now seen corresponding path program 9 times [2024-06-04 15:25:40,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:40,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093797273] [2024-06-04 15:25:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:40,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:41,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093797273] [2024-06-04 15:25:41,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093797273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:41,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:41,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:41,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596981048] [2024-06-04 15:25:41,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:41,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:41,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:41,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:41,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 180 transitions, 1980 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:41,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:41,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:41,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:41,974 INFO L124 PetriNetUnfolderBase]: 548/1009 cut-off events. [2024-06-04 15:25:41,975 INFO L125 PetriNetUnfolderBase]: For 101232/101232 co-relation queries the response was YES. [2024-06-04 15:25:41,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7645 conditions, 1009 events. 548/1009 cut-off events. For 101232/101232 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5061 event pairs, 74 based on Foata normal form. 2/1009 useless extension candidates. Maximal degree in co-relation 7542. Up to 500 conditions per place. [2024-06-04 15:25:41,982 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 88 changer transitions 0/214 dead transitions. [2024-06-04 15:25:41,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 214 transitions, 2776 flow [2024-06-04 15:25:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:41,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-04 15:25:41,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-04 15:25:41,983 INFO L175 Difference]: Start difference. First operand has 217 places, 180 transitions, 1980 flow. Second operand 10 states and 143 transitions. [2024-06-04 15:25:41,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 214 transitions, 2776 flow [2024-06-04 15:25:42,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 214 transitions, 2621 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:25:42,125 INFO L231 Difference]: Finished difference. Result has 215 places, 181 transitions, 2024 flow [2024-06-04 15:25:42,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2024, PETRI_PLACES=215, PETRI_TRANSITIONS=181} [2024-06-04 15:25:42,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 15:25:42,126 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 181 transitions, 2024 flow [2024-06-04 15:25:42,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:42,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:42,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:42,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:25:42,126 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)] === [2024-06-04 15:25:42,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:42,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1529748331, now seen corresponding path program 10 times [2024-06-04 15:25:42,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:42,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824608431] [2024-06-04 15:25:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:42,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:42,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824608431] [2024-06-04 15:25:42,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824608431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:42,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:42,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:42,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085161653] [2024-06-04 15:25:42,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:42,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:42,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:42,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:42,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 181 transitions, 2024 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:42,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:42,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:42,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:43,253 INFO L124 PetriNetUnfolderBase]: 562/1035 cut-off events. [2024-06-04 15:25:43,254 INFO L125 PetriNetUnfolderBase]: For 102801/102801 co-relation queries the response was YES. [2024-06-04 15:25:43,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7933 conditions, 1035 events. 562/1035 cut-off events. For 102801/102801 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5270 event pairs, 118 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 7829. Up to 851 conditions per place. [2024-06-04 15:25:43,261 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 139 selfloop transitions, 67 changer transitions 0/208 dead transitions. [2024-06-04 15:25:43,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 208 transitions, 2676 flow [2024-06-04 15:25:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:25:43,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:25:43,262 INFO L175 Difference]: Start difference. First operand has 215 places, 181 transitions, 2024 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:25:43,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 208 transitions, 2676 flow [2024-06-04 15:25:43,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 208 transitions, 2350 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 15:25:43,420 INFO L231 Difference]: Finished difference. Result has 215 places, 186 transitions, 1896 flow [2024-06-04 15:25:43,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1896, PETRI_PLACES=215, PETRI_TRANSITIONS=186} [2024-06-04 15:25:43,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 15:25:43,420 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 186 transitions, 1896 flow [2024-06-04 15:25:43,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:43,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:43,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:43,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:25:43,420 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)] === [2024-06-04 15:25:43,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash 334933373, now seen corresponding path program 2 times [2024-06-04 15:25:43,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:43,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036665856] [2024-06-04 15:25:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:43,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:44,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:44,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036665856] [2024-06-04 15:25:44,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036665856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:44,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:44,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:44,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529893259] [2024-06-04 15:25:44,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:44,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:44,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:44,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:44,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:44,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 186 transitions, 1896 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:44,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:44,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:44,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:44,844 INFO L124 PetriNetUnfolderBase]: 539/986 cut-off events. [2024-06-04 15:25:44,844 INFO L125 PetriNetUnfolderBase]: For 83845/83845 co-relation queries the response was YES. [2024-06-04 15:25:44,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6756 conditions, 986 events. 539/986 cut-off events. For 83845/83845 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4939 event pairs, 84 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 6653. Up to 667 conditions per place. [2024-06-04 15:25:44,851 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 88 changer transitions 0/217 dead transitions. [2024-06-04 15:25:44,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 217 transitions, 2544 flow [2024-06-04 15:25:44,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:25:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:25:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-04 15:25:44,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2024-06-04 15:25:44,852 INFO L175 Difference]: Start difference. First operand has 215 places, 186 transitions, 1896 flow. Second operand 13 states and 166 transitions. [2024-06-04 15:25:44,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 217 transitions, 2544 flow [2024-06-04 15:25:45,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 217 transitions, 2486 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 15:25:45,014 INFO L231 Difference]: Finished difference. Result has 225 places, 188 transitions, 2040 flow [2024-06-04 15:25:45,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2040, PETRI_PLACES=225, PETRI_TRANSITIONS=188} [2024-06-04 15:25:45,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-04 15:25:45,015 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 188 transitions, 2040 flow [2024-06-04 15:25:45,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:45,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:45,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:45,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:25:45,017 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)] === [2024-06-04 15:25:45,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:45,017 INFO L85 PathProgramCache]: Analyzing trace with hash 334933187, now seen corresponding path program 11 times [2024-06-04 15:25:45,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:45,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046846908] [2024-06-04 15:25:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:45,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:45,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:45,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046846908] [2024-06-04 15:25:45,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046846908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:45,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:45,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:45,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374021291] [2024-06-04 15:25:45,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:45,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:45,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:45,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:45,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:45,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 188 transitions, 2040 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:45,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:45,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:45,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:46,414 INFO L124 PetriNetUnfolderBase]: 560/1033 cut-off events. [2024-06-04 15:25:46,414 INFO L125 PetriNetUnfolderBase]: For 113362/113362 co-relation queries the response was YES. [2024-06-04 15:25:46,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6993 conditions, 1033 events. 560/1033 cut-off events. For 113362/113362 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5273 event pairs, 87 based on Foata normal form. 16/1047 useless extension candidates. Maximal degree in co-relation 6888. Up to 679 conditions per place. [2024-06-04 15:25:46,422 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 120 selfloop transitions, 88 changer transitions 12/222 dead transitions. [2024-06-04 15:25:46,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 222 transitions, 2715 flow [2024-06-04 15:25:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:25:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:25:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-04 15:25:46,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 15:25:46,423 INFO L175 Difference]: Start difference. First operand has 225 places, 188 transitions, 2040 flow. Second operand 12 states and 162 transitions. [2024-06-04 15:25:46,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 222 transitions, 2715 flow [2024-06-04 15:25:46,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 222 transitions, 2491 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-04 15:25:46,590 INFO L231 Difference]: Finished difference. Result has 226 places, 184 transitions, 1969 flow [2024-06-04 15:25:46,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1969, PETRI_PLACES=226, PETRI_TRANSITIONS=184} [2024-06-04 15:25:46,590 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-04 15:25:46,591 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 184 transitions, 1969 flow [2024-06-04 15:25:46,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:46,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:46,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:46,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:25:46,591 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)] === [2024-06-04 15:25:46,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1352612161, now seen corresponding path program 12 times [2024-06-04 15:25:46,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:46,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884906535] [2024-06-04 15:25:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:46,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884906535] [2024-06-04 15:25:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884906535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592659652] [2024-06-04 15:25:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:47,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:47,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:47,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:47,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:47,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 184 transitions, 1969 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:47,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:47,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:47,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:47,744 INFO L124 PetriNetUnfolderBase]: 530/975 cut-off events. [2024-06-04 15:25:47,744 INFO L125 PetriNetUnfolderBase]: For 84290/84290 co-relation queries the response was YES. [2024-06-04 15:25:47,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 975 events. 530/975 cut-off events. For 84290/84290 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4904 event pairs, 100 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 6682. Up to 858 conditions per place. [2024-06-04 15:25:47,752 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 158 selfloop transitions, 39 changer transitions 0/199 dead transitions. [2024-06-04 15:25:47,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 199 transitions, 2406 flow [2024-06-04 15:25:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 15:25:47,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 15:25:47,753 INFO L175 Difference]: Start difference. First operand has 226 places, 184 transitions, 1969 flow. Second operand 10 states and 118 transitions. [2024-06-04 15:25:47,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 199 transitions, 2406 flow [2024-06-04 15:25:47,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 199 transitions, 2184 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:25:47,915 INFO L231 Difference]: Finished difference. Result has 224 places, 185 transitions, 1842 flow [2024-06-04 15:25:47,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1842, PETRI_PLACES=224, PETRI_TRANSITIONS=185} [2024-06-04 15:25:47,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-04 15:25:47,915 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 185 transitions, 1842 flow [2024-06-04 15:25:47,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:47,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:47,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:47,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:25:47,915 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)] === [2024-06-04 15:25:47,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash 680967093, now seen corresponding path program 3 times [2024-06-04 15:25:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965346437] [2024-06-04 15:25:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:48,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965346437] [2024-06-04 15:25:48,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965346437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:48,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:48,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:48,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772390319] [2024-06-04 15:25:48,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:48,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:48,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:48,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:48,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:48,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:48,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 185 transitions, 1842 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:48,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:48,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:48,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:49,225 INFO L124 PetriNetUnfolderBase]: 536/985 cut-off events. [2024-06-04 15:25:49,225 INFO L125 PetriNetUnfolderBase]: For 86785/86785 co-relation queries the response was YES. [2024-06-04 15:25:49,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 985 events. 536/985 cut-off events. For 86785/86785 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4968 event pairs, 90 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6564. Up to 784 conditions per place. [2024-06-04 15:25:49,233 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 51 changer transitions 0/205 dead transitions. [2024-06-04 15:25:49,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 205 transitions, 2308 flow [2024-06-04 15:25:49,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:25:49,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:25:49,234 INFO L175 Difference]: Start difference. First operand has 224 places, 185 transitions, 1842 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:25:49,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 205 transitions, 2308 flow [2024-06-04 15:25:49,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 205 transitions, 2226 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:49,408 INFO L231 Difference]: Finished difference. Result has 227 places, 187 transitions, 1891 flow [2024-06-04 15:25:49,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1891, PETRI_PLACES=227, PETRI_TRANSITIONS=187} [2024-06-04 15:25:49,408 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-04 15:25:49,408 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 187 transitions, 1891 flow [2024-06-04 15:25:49,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:49,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:49,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:49,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:25:49,408 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)] === [2024-06-04 15:25:49,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:49,409 INFO L85 PathProgramCache]: Analyzing trace with hash 674533167, now seen corresponding path program 13 times [2024-06-04 15:25:49,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:49,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975555486] [2024-06-04 15:25:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:49,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:50,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:50,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975555486] [2024-06-04 15:25:50,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975555486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:50,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:50,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:50,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925899522] [2024-06-04 15:25:50,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:50,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:50,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:50,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:50,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:50,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:50,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 187 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:50,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:50,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:50,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:50,774 INFO L124 PetriNetUnfolderBase]: 593/1094 cut-off events. [2024-06-04 15:25:50,774 INFO L125 PetriNetUnfolderBase]: For 128716/128716 co-relation queries the response was YES. [2024-06-04 15:25:50,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 1094 events. 593/1094 cut-off events. For 128716/128716 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5652 event pairs, 107 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 8163. Up to 757 conditions per place. [2024-06-04 15:25:50,783 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 58 changer transitions 0/217 dead transitions. [2024-06-04 15:25:50,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 217 transitions, 2739 flow [2024-06-04 15:25:50,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-04 15:25:50,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-04 15:25:50,784 INFO L175 Difference]: Start difference. First operand has 227 places, 187 transitions, 1891 flow. Second operand 10 states and 136 transitions. [2024-06-04 15:25:50,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 217 transitions, 2739 flow [2024-06-04 15:25:50,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 217 transitions, 2628 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 15:25:50,989 INFO L231 Difference]: Finished difference. Result has 230 places, 191 transitions, 1986 flow [2024-06-04 15:25:50,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1986, PETRI_PLACES=230, PETRI_TRANSITIONS=191} [2024-06-04 15:25:50,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-04 15:25:50,989 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 191 transitions, 1986 flow [2024-06-04 15:25:50,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:50,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:50,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:50,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:25:50,990 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)] === [2024-06-04 15:25:50,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash 508299387, now seen corresponding path program 14 times [2024-06-04 15:25:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068489742] [2024-06-04 15:25:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:50,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:51,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:51,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068489742] [2024-06-04 15:25:51,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068489742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:51,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:51,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:51,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446344773] [2024-06-04 15:25:51,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:51,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:51,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:51,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:51,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 191 transitions, 1986 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:51,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:51,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:51,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:52,257 INFO L124 PetriNetUnfolderBase]: 597/1102 cut-off events. [2024-06-04 15:25:52,257 INFO L125 PetriNetUnfolderBase]: For 132633/132633 co-relation queries the response was YES. [2024-06-04 15:25:52,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8421 conditions, 1102 events. 597/1102 cut-off events. For 132633/132633 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5725 event pairs, 110 based on Foata normal form. 2/1102 useless extension candidates. Maximal degree in co-relation 8312. Up to 890 conditions per place. [2024-06-04 15:25:52,266 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 56 changer transitions 0/212 dead transitions. [2024-06-04 15:25:52,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 212 transitions, 2467 flow [2024-06-04 15:25:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:52,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:25:52,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:25:52,267 INFO L175 Difference]: Start difference. First operand has 230 places, 191 transitions, 1986 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:25:52,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 212 transitions, 2467 flow [2024-06-04 15:25:52,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 212 transitions, 2396 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 15:25:52,527 INFO L231 Difference]: Finished difference. Result has 235 places, 192 transitions, 2048 flow [2024-06-04 15:25:52,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2048, PETRI_PLACES=235, PETRI_TRANSITIONS=192} [2024-06-04 15:25:52,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-04 15:25:52,528 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 192 transitions, 2048 flow [2024-06-04 15:25:52,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:52,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:52,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:52,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:25:52,528 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)] === [2024-06-04 15:25:52,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:52,529 INFO L85 PathProgramCache]: Analyzing trace with hash 505635803, now seen corresponding path program 4 times [2024-06-04 15:25:52,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:52,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129298886] [2024-06-04 15:25:52,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:52,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:53,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129298886] [2024-06-04 15:25:53,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129298886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:53,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:53,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:53,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892217974] [2024-06-04 15:25:53,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:53,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:53,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:53,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:53,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:53,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:53,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 192 transitions, 2048 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:53,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:53,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:53,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:53,721 INFO L124 PetriNetUnfolderBase]: 613/1128 cut-off events. [2024-06-04 15:25:53,721 INFO L125 PetriNetUnfolderBase]: For 141553/141553 co-relation queries the response was YES. [2024-06-04 15:25:53,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8827 conditions, 1128 events. 613/1128 cut-off events. For 141553/141553 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5876 event pairs, 98 based on Foata normal form. 2/1128 useless extension candidates. Maximal degree in co-relation 8716. Up to 870 conditions per place. [2024-06-04 15:25:53,730 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 63 changer transitions 0/216 dead transitions. [2024-06-04 15:25:53,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 216 transitions, 2712 flow [2024-06-04 15:25:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:25:53,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 15:25:53,731 INFO L175 Difference]: Start difference. First operand has 235 places, 192 transitions, 2048 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:25:53,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 216 transitions, 2712 flow [2024-06-04 15:25:54,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 216 transitions, 2565 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:54,005 INFO L231 Difference]: Finished difference. Result has 238 places, 196 transitions, 2084 flow [2024-06-04 15:25:54,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2084, PETRI_PLACES=238, PETRI_TRANSITIONS=196} [2024-06-04 15:25:54,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-04 15:25:54,005 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 196 transitions, 2084 flow [2024-06-04 15:25:54,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:54,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:54,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:54,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:25:54,006 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)] === [2024-06-04 15:25:54,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:54,006 INFO L85 PathProgramCache]: Analyzing trace with hash 674710983, now seen corresponding path program 5 times [2024-06-04 15:25:54,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:54,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732455117] [2024-06-04 15:25:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:54,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:54,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:54,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732455117] [2024-06-04 15:25:54,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732455117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:54,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:54,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:54,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715955731] [2024-06-04 15:25:54,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:54,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:54,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:54,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:54,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:54,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 196 transitions, 2084 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:54,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:54,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:54,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:55,289 INFO L124 PetriNetUnfolderBase]: 609/1122 cut-off events. [2024-06-04 15:25:55,289 INFO L125 PetriNetUnfolderBase]: For 139807/139807 co-relation queries the response was YES. [2024-06-04 15:25:55,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8702 conditions, 1122 events. 609/1122 cut-off events. For 139807/139807 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5849 event pairs, 97 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 8590. Up to 896 conditions per place. [2024-06-04 15:25:55,300 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 54 changer transitions 0/217 dead transitions. [2024-06-04 15:25:55,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 217 transitions, 2706 flow [2024-06-04 15:25:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-04 15:25:55,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-04 15:25:55,301 INFO L175 Difference]: Start difference. First operand has 238 places, 196 transitions, 2084 flow. Second operand 10 states and 133 transitions. [2024-06-04 15:25:55,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 217 transitions, 2706 flow [2024-06-04 15:25:55,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 217 transitions, 2625 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:55,596 INFO L231 Difference]: Finished difference. Result has 242 places, 196 transitions, 2116 flow [2024-06-04 15:25:55,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2116, PETRI_PLACES=242, PETRI_TRANSITIONS=196} [2024-06-04 15:25:55,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-04 15:25:55,597 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 196 transitions, 2116 flow [2024-06-04 15:25:55,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:55,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:55,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:55,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:25:55,597 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)] === [2024-06-04 15:25:55,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash 674537817, now seen corresponding path program 15 times [2024-06-04 15:25:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847004066] [2024-06-04 15:25:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:56,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:56,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847004066] [2024-06-04 15:25:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847004066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:56,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:56,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:56,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338979265] [2024-06-04 15:25:56,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:56,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:56,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:56,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:56,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:56,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 196 transitions, 2116 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:56,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:56,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:56,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:57,010 INFO L124 PetriNetUnfolderBase]: 622/1155 cut-off events. [2024-06-04 15:25:57,011 INFO L125 PetriNetUnfolderBase]: For 170229/170229 co-relation queries the response was YES. [2024-06-04 15:25:57,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8596 conditions, 1155 events. 622/1155 cut-off events. For 170229/170229 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6116 event pairs, 116 based on Foata normal form. 16/1169 useless extension candidates. Maximal degree in co-relation 8482. Up to 883 conditions per place. [2024-06-04 15:25:57,020 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 155 selfloop transitions, 53 changer transitions 12/222 dead transitions. [2024-06-04 15:25:57,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 222 transitions, 2630 flow [2024-06-04 15:25:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:25:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:25:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-04 15:25:57,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 15:25:57,021 INFO L175 Difference]: Start difference. First operand has 242 places, 196 transitions, 2116 flow. Second operand 11 states and 147 transitions. [2024-06-04 15:25:57,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 222 transitions, 2630 flow [2024-06-04 15:25:57,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 222 transitions, 2462 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 15:25:57,276 INFO L231 Difference]: Finished difference. Result has 245 places, 191 transitions, 2014 flow [2024-06-04 15:25:57,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2014, PETRI_PLACES=245, PETRI_TRANSITIONS=191} [2024-06-04 15:25:57,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-04 15:25:57,277 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 191 transitions, 2014 flow [2024-06-04 15:25:57,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:57,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:57,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:57,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:25:57,278 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)] === [2024-06-04 15:25:57,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2130114439, now seen corresponding path program 1 times [2024-06-04 15:25:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:57,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185879724] [2024-06-04 15:25:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:58,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185879724] [2024-06-04 15:25:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185879724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:58,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:58,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:25:58,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500576372] [2024-06-04 15:25:58,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:58,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:25:58,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:25:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:25:58,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:58,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 191 transitions, 2014 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:25:58,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:58,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:58,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:58,593 INFO L124 PetriNetUnfolderBase]: 592/1097 cut-off events. [2024-06-04 15:25:58,593 INFO L125 PetriNetUnfolderBase]: For 139811/139811 co-relation queries the response was YES. [2024-06-04 15:25:58,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8426 conditions, 1097 events. 592/1097 cut-off events. For 139811/139811 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5717 event pairs, 115 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 8310. Up to 1052 conditions per place. [2024-06-04 15:25:58,603 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 19 changer transitions 0/206 dead transitions. [2024-06-04 15:25:58,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 206 transitions, 2482 flow [2024-06-04 15:25:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:25:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:25:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:25:58,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:25:58,605 INFO L175 Difference]: Start difference. First operand has 245 places, 191 transitions, 2014 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:25:58,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 206 transitions, 2482 flow [2024-06-04 15:25:58,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 206 transitions, 2346 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-04 15:25:58,900 INFO L231 Difference]: Finished difference. Result has 242 places, 193 transitions, 1959 flow [2024-06-04 15:25:58,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1959, PETRI_PLACES=242, PETRI_TRANSITIONS=193} [2024-06-04 15:25:58,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-04 15:25:58,901 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 193 transitions, 1959 flow [2024-06-04 15:25:58,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:25:58,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:58,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:58,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:25:58,901 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)] === [2024-06-04 15:25:58,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:58,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1063101289, now seen corresponding path program 16 times [2024-06-04 15:25:58,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:58,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060781866] [2024-06-04 15:25:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060781866] [2024-06-04 15:25:59,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060781866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:59,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:59,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:25:59,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770785195] [2024-06-04 15:25:59,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:59,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:25:59,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:59,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:25:59,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:25:59,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:25:59,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 193 transitions, 1959 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:25:59,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:59,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:25:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:00,247 INFO L124 PetriNetUnfolderBase]: 616/1149 cut-off events. [2024-06-04 15:26:00,247 INFO L125 PetriNetUnfolderBase]: For 169834/169834 co-relation queries the response was YES. [2024-06-04 15:26:00,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8437 conditions, 1149 events. 616/1149 cut-off events. For 169834/169834 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6098 event pairs, 114 based on Foata normal form. 14/1161 useless extension candidates. Maximal degree in co-relation 8321. Up to 1003 conditions per place. [2024-06-04 15:26:00,255 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 176 selfloop transitions, 24 changer transitions 13/215 dead transitions. [2024-06-04 15:26:00,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 215 transitions, 2470 flow [2024-06-04 15:26:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:26:00,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:26:00,256 INFO L175 Difference]: Start difference. First operand has 242 places, 193 transitions, 1959 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:26:00,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 215 transitions, 2470 flow [2024-06-04 15:26:00,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 215 transitions, 2414 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:26:00,537 INFO L231 Difference]: Finished difference. Result has 245 places, 189 transitions, 1924 flow [2024-06-04 15:26:00,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=245, PETRI_TRANSITIONS=189} [2024-06-04 15:26:00,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-04 15:26:00,538 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 189 transitions, 1924 flow [2024-06-04 15:26:00,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:00,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:00,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:00,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:26:00,538 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)] === [2024-06-04 15:26:00,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1943453895, now seen corresponding path program 6 times [2024-06-04 15:26:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:00,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883352499] [2024-06-04 15:26:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:00,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:01,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:01,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883352499] [2024-06-04 15:26:01,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883352499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:01,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:01,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:01,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052493899] [2024-06-04 15:26:01,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:01,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:01,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:01,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 189 transitions, 1924 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:01,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:01,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:01,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:01,863 INFO L124 PetriNetUnfolderBase]: 592/1105 cut-off events. [2024-06-04 15:26:01,863 INFO L125 PetriNetUnfolderBase]: For 138931/138931 co-relation queries the response was YES. [2024-06-04 15:26:01,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 1105 events. 592/1105 cut-off events. For 138931/138931 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5841 event pairs, 115 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 8223. Up to 1040 conditions per place. [2024-06-04 15:26:01,871 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 24 changer transitions 1/210 dead transitions. [2024-06-04 15:26:01,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 210 transitions, 2437 flow [2024-06-04 15:26:01,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:26:01,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:26:01,872 INFO L175 Difference]: Start difference. First operand has 245 places, 189 transitions, 1924 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:26:01,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 210 transitions, 2437 flow [2024-06-04 15:26:02,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 210 transitions, 2373 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:02,177 INFO L231 Difference]: Finished difference. Result has 248 places, 193 transitions, 1972 flow [2024-06-04 15:26:02,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1972, PETRI_PLACES=248, PETRI_TRANSITIONS=193} [2024-06-04 15:26:02,178 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-04 15:26:02,178 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 193 transitions, 1972 flow [2024-06-04 15:26:02,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:02,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:02,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:02,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:26:02,178 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)] === [2024-06-04 15:26:02,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:02,178 INFO L85 PathProgramCache]: Analyzing trace with hash 382387001, now seen corresponding path program 7 times [2024-06-04 15:26:02,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:02,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129008391] [2024-06-04 15:26:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:02,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:02,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129008391] [2024-06-04 15:26:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129008391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:02,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:02,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:02,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553193613] [2024-06-04 15:26:02,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:02,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:02,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:03,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:03,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 193 transitions, 1972 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:03,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:03,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:03,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:03,475 INFO L124 PetriNetUnfolderBase]: 596/1109 cut-off events. [2024-06-04 15:26:03,475 INFO L125 PetriNetUnfolderBase]: For 142793/142793 co-relation queries the response was YES. [2024-06-04 15:26:03,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8414 conditions, 1109 events. 596/1109 cut-off events. For 142793/142793 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5832 event pairs, 115 based on Foata normal form. 2/1109 useless extension candidates. Maximal degree in co-relation 8296. Up to 1029 conditions per place. [2024-06-04 15:26:03,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 27 changer transitions 0/208 dead transitions. [2024-06-04 15:26:03,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 208 transitions, 2444 flow [2024-06-04 15:26:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:03,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 15:26:03,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:26:03,485 INFO L175 Difference]: Start difference. First operand has 248 places, 193 transitions, 1972 flow. Second operand 10 states and 115 transitions. [2024-06-04 15:26:03,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 208 transitions, 2444 flow [2024-06-04 15:26:03,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 208 transitions, 2379 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:03,782 INFO L231 Difference]: Finished difference. Result has 250 places, 195 transitions, 2002 flow [2024-06-04 15:26:03,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=250, PETRI_TRANSITIONS=195} [2024-06-04 15:26:03,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-04 15:26:03,783 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 195 transitions, 2002 flow [2024-06-04 15:26:03,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:03,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:03,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:03,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:26:03,783 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)] === [2024-06-04 15:26:03,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash 375957725, now seen corresponding path program 17 times [2024-06-04 15:26:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121969550] [2024-06-04 15:26:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:03,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:04,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:04,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121969550] [2024-06-04 15:26:04,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121969550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:04,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:04,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:04,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539411227] [2024-06-04 15:26:04,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:04,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:04,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:04,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:04,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 195 transitions, 2002 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:04,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:04,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:04,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:04,942 INFO L124 PetriNetUnfolderBase]: 600/1117 cut-off events. [2024-06-04 15:26:04,942 INFO L125 PetriNetUnfolderBase]: For 146355/146355 co-relation queries the response was YES. [2024-06-04 15:26:04,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8500 conditions, 1117 events. 600/1117 cut-off events. For 146355/146355 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5893 event pairs, 121 based on Foata normal form. 2/1117 useless extension candidates. Maximal degree in co-relation 8381. Up to 1057 conditions per place. [2024-06-04 15:26:04,952 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 30 changer transitions 0/207 dead transitions. [2024-06-04 15:26:04,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 207 transitions, 2455 flow [2024-06-04 15:26:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:26:04,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:26:04,953 INFO L175 Difference]: Start difference. First operand has 250 places, 195 transitions, 2002 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:26:04,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 207 transitions, 2455 flow [2024-06-04 15:26:05,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 207 transitions, 2380 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:05,230 INFO L231 Difference]: Finished difference. Result has 252 places, 196 transitions, 2012 flow [2024-06-04 15:26:05,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2012, PETRI_PLACES=252, PETRI_TRANSITIONS=196} [2024-06-04 15:26:05,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 15:26:05,231 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 196 transitions, 2012 flow [2024-06-04 15:26:05,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:05,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:05,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:05,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:26:05,231 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)] === [2024-06-04 15:26:05,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1850653291, now seen corresponding path program 2 times [2024-06-04 15:26:05,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:05,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989237013] [2024-06-04 15:26:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:05,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:06,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:06,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989237013] [2024-06-04 15:26:06,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989237013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:06,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:06,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:06,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371056338] [2024-06-04 15:26:06,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:06,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:06,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:06,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:06,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:06,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 196 transitions, 2012 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:26:06,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:06,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:06,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:06,548 INFO L124 PetriNetUnfolderBase]: 604/1125 cut-off events. [2024-06-04 15:26:06,548 INFO L125 PetriNetUnfolderBase]: For 151072/151072 co-relation queries the response was YES. [2024-06-04 15:26:06,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8585 conditions, 1125 events. 604/1125 cut-off events. For 151072/151072 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5961 event pairs, 113 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 8465. Up to 1065 conditions per place. [2024-06-04 15:26:06,559 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 23 changer transitions 0/210 dead transitions. [2024-06-04 15:26:06,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 210 transitions, 2480 flow [2024-06-04 15:26:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:06,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 15:26:06,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 15:26:06,560 INFO L175 Difference]: Start difference. First operand has 252 places, 196 transitions, 2012 flow. Second operand 10 states and 113 transitions. [2024-06-04 15:26:06,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 210 transitions, 2480 flow [2024-06-04 15:26:06,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 210 transitions, 2406 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:06,876 INFO L231 Difference]: Finished difference. Result has 254 places, 197 transitions, 2014 flow [2024-06-04 15:26:06,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2014, PETRI_PLACES=254, PETRI_TRANSITIONS=197} [2024-06-04 15:26:06,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:26:06,877 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 197 transitions, 2014 flow [2024-06-04 15:26:06,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:26:06,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:06,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:06,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:26:06,877 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)] === [2024-06-04 15:26:06,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2102644411, now seen corresponding path program 3 times [2024-06-04 15:26:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:06,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309441456] [2024-06-04 15:26:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:07,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:07,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309441456] [2024-06-04 15:26:07,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309441456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:07,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:07,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276854112] [2024-06-04 15:26:07,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:07,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:07,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:07,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 197 transitions, 2014 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:26:07,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:07,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:07,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:08,174 INFO L124 PetriNetUnfolderBase]: 608/1133 cut-off events. [2024-06-04 15:26:08,175 INFO L125 PetriNetUnfolderBase]: For 155095/155095 co-relation queries the response was YES. [2024-06-04 15:26:08,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8666 conditions, 1133 events. 608/1133 cut-off events. For 155095/155095 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6028 event pairs, 113 based on Foata normal form. 2/1133 useless extension candidates. Maximal degree in co-relation 8545. Up to 1100 conditions per place. [2024-06-04 15:26:08,186 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 193 selfloop transitions, 15 changer transitions 0/210 dead transitions. [2024-06-04 15:26:08,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 210 transitions, 2482 flow [2024-06-04 15:26:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:08,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 15:26:08,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 15:26:08,187 INFO L175 Difference]: Start difference. First operand has 254 places, 197 transitions, 2014 flow. Second operand 10 states and 107 transitions. [2024-06-04 15:26:08,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 210 transitions, 2482 flow [2024-06-04 15:26:08,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 210 transitions, 2332 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-04 15:26:08,499 INFO L231 Difference]: Finished difference. Result has 252 places, 198 transitions, 1926 flow [2024-06-04 15:26:08,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1926, PETRI_PLACES=252, PETRI_TRANSITIONS=198} [2024-06-04 15:26:08,500 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 15:26:08,500 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 198 transitions, 1926 flow [2024-06-04 15:26:08,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:26:08,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:08,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:08,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:26:08,500 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)] === [2024-06-04 15:26:08,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:08,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2102398147, now seen corresponding path program 18 times [2024-06-04 15:26:08,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:08,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613510107] [2024-06-04 15:26:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:08,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:09,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:09,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613510107] [2024-06-04 15:26:09,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613510107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:09,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:09,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:09,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261803677] [2024-06-04 15:26:09,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:09,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:09,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:09,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:09,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:09,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 198 transitions, 1926 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:09,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:09,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:09,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:09,604 INFO L124 PetriNetUnfolderBase]: 612/1141 cut-off events. [2024-06-04 15:26:09,605 INFO L125 PetriNetUnfolderBase]: For 157861/157861 co-relation queries the response was YES. [2024-06-04 15:26:09,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 1141 events. 612/1141 cut-off events. For 157861/157861 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6080 event pairs, 123 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 8521. Up to 1108 conditions per place. [2024-06-04 15:26:09,615 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 192 selfloop transitions, 16 changer transitions 0/210 dead transitions. [2024-06-04 15:26:09,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 210 transitions, 2387 flow [2024-06-04 15:26:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 15:26:09,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 15:26:09,616 INFO L175 Difference]: Start difference. First operand has 252 places, 198 transitions, 1926 flow. Second operand 10 states and 107 transitions. [2024-06-04 15:26:09,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 210 transitions, 2387 flow [2024-06-04 15:26:09,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 210 transitions, 2316 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:09,933 INFO L231 Difference]: Finished difference. Result has 252 places, 199 transitions, 1914 flow [2024-06-04 15:26:09,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1914, PETRI_PLACES=252, PETRI_TRANSITIONS=199} [2024-06-04 15:26:09,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 15:26:09,933 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 199 transitions, 1914 flow [2024-06-04 15:26:09,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:09,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:09,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:09,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:26:09,934 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)] === [2024-06-04 15:26:09,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:09,934 INFO L85 PathProgramCache]: Analyzing trace with hash 375957911, now seen corresponding path program 8 times [2024-06-04 15:26:09,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:09,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22384281] [2024-06-04 15:26:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:09,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:10,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:10,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22384281] [2024-06-04 15:26:10,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22384281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:10,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:10,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:10,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599469723] [2024-06-04 15:26:10,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:10,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:10,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:10,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:10,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:10,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:10,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 199 transitions, 1914 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:10,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:10,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:10,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:11,126 INFO L124 PetriNetUnfolderBase]: 618/1151 cut-off events. [2024-06-04 15:26:11,126 INFO L125 PetriNetUnfolderBase]: For 162492/162492 co-relation queries the response was YES. [2024-06-04 15:26:11,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8695 conditions, 1151 events. 618/1151 cut-off events. For 162492/162492 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6128 event pairs, 104 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 8575. Up to 982 conditions per place. [2024-06-04 15:26:11,135 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 50 changer transitions 0/219 dead transitions. [2024-06-04 15:26:11,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 219 transitions, 2600 flow [2024-06-04 15:26:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:26:11,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:26:11,136 INFO L175 Difference]: Start difference. First operand has 252 places, 199 transitions, 1914 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:26:11,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 219 transitions, 2600 flow [2024-06-04 15:26:11,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 219 transitions, 2538 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:11,483 INFO L231 Difference]: Finished difference. Result has 255 places, 203 transitions, 2040 flow [2024-06-04 15:26:11,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2040, PETRI_PLACES=255, PETRI_TRANSITIONS=203} [2024-06-04 15:26:11,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 15:26:11,484 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 203 transitions, 2040 flow [2024-06-04 15:26:11,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:11,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:11,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:11,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:26:11,484 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)] === [2024-06-04 15:26:11,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:11,484 INFO L85 PathProgramCache]: Analyzing trace with hash 39433497, now seen corresponding path program 4 times [2024-06-04 15:26:11,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:11,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53237230] [2024-06-04 15:26:11,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:11,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:12,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:12,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53237230] [2024-06-04 15:26:12,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53237230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:12,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:12,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497723037] [2024-06-04 15:26:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:12,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:12,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:12,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:12,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:12,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 203 transitions, 2040 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:26:12,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:12,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:12,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:13,088 INFO L124 PetriNetUnfolderBase]: 622/1159 cut-off events. [2024-06-04 15:26:13,088 INFO L125 PetriNetUnfolderBase]: For 165963/165963 co-relation queries the response was YES. [2024-06-04 15:26:13,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8971 conditions, 1159 events. 622/1159 cut-off events. For 165963/165963 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6188 event pairs, 117 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 8849. Up to 1121 conditions per place. [2024-06-04 15:26:13,099 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 200 selfloop transitions, 15 changer transitions 0/217 dead transitions. [2024-06-04 15:26:13,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 217 transitions, 2526 flow [2024-06-04 15:26:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:26:13,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 15:26:13,100 INFO L175 Difference]: Start difference. First operand has 255 places, 203 transitions, 2040 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:26:13,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 217 transitions, 2526 flow [2024-06-04 15:26:13,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 217 transitions, 2337 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:13,468 INFO L231 Difference]: Finished difference. Result has 255 places, 204 transitions, 1915 flow [2024-06-04 15:26:13,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1915, PETRI_PLACES=255, PETRI_TRANSITIONS=204} [2024-06-04 15:26:13,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 15:26:13,469 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 204 transitions, 1915 flow [2024-06-04 15:26:13,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:26:13,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:13,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:13,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:26:13,469 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)] === [2024-06-04 15:26:13,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1560584107, now seen corresponding path program 19 times [2024-06-04 15:26:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:13,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104707556] [2024-06-04 15:26:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:14,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104707556] [2024-06-04 15:26:14,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104707556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:14,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:14,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:14,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42452828] [2024-06-04 15:26:14,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:14,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:14,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:14,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:14,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:14,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:14,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 204 transitions, 1915 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:14,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:14,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:14,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:14,631 INFO L124 PetriNetUnfolderBase]: 626/1167 cut-off events. [2024-06-04 15:26:14,632 INFO L125 PetriNetUnfolderBase]: For 169808/169808 co-relation queries the response was YES. [2024-06-04 15:26:14,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 1167 events. 626/1167 cut-off events. For 169808/169808 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6253 event pairs, 123 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 8645. Up to 1072 conditions per place. [2024-06-04 15:26:14,642 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 182 selfloop transitions, 34 changer transitions 0/218 dead transitions. [2024-06-04 15:26:14,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 218 transitions, 2566 flow [2024-06-04 15:26:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 15:26:14,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 15:26:14,644 INFO L175 Difference]: Start difference. First operand has 255 places, 204 transitions, 1915 flow. Second operand 10 states and 113 transitions. [2024-06-04 15:26:14,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 218 transitions, 2566 flow [2024-06-04 15:26:15,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 218 transitions, 2512 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:15,047 INFO L231 Difference]: Finished difference. Result has 257 places, 205 transitions, 1956 flow [2024-06-04 15:26:15,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1956, PETRI_PLACES=257, PETRI_TRANSITIONS=205} [2024-06-04 15:26:15,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 15:26:15,047 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 205 transitions, 1956 flow [2024-06-04 15:26:15,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:15,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:15,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:15,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:26:15,048 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)] === [2024-06-04 15:26:15,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:15,048 INFO L85 PathProgramCache]: Analyzing trace with hash 376130705, now seen corresponding path program 20 times [2024-06-04 15:26:15,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:15,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223506595] [2024-06-04 15:26:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:15,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:15,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:15,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223506595] [2024-06-04 15:26:15,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223506595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:15,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:15,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:15,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085956201] [2024-06-04 15:26:15,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:15,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:15,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:15,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:15,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:15,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 205 transitions, 1956 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:15,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:15,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:15,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:16,303 INFO L124 PetriNetUnfolderBase]: 639/1200 cut-off events. [2024-06-04 15:26:16,304 INFO L125 PetriNetUnfolderBase]: For 209491/209491 co-relation queries the response was YES. [2024-06-04 15:26:16,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8531 conditions, 1200 events. 639/1200 cut-off events. For 209491/209491 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6519 event pairs, 118 based on Foata normal form. 16/1214 useless extension candidates. Maximal degree in co-relation 8410. Up to 1060 conditions per place. [2024-06-04 15:26:16,314 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 26 changer transitions 12/225 dead transitions. [2024-06-04 15:26:16,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 225 transitions, 2466 flow [2024-06-04 15:26:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:16,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:26:16,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:26:16,315 INFO L175 Difference]: Start difference. First operand has 257 places, 205 transitions, 1956 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:26:16,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 225 transitions, 2466 flow [2024-06-04 15:26:16,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 225 transitions, 2270 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:16,643 INFO L231 Difference]: Finished difference. Result has 258 places, 200 transitions, 1764 flow [2024-06-04 15:26:16,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1764, PETRI_PLACES=258, PETRI_TRANSITIONS=200} [2024-06-04 15:26:16,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-04 15:26:16,643 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 200 transitions, 1764 flow [2024-06-04 15:26:16,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:16,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:16,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:16,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:26:16,644 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)] === [2024-06-04 15:26:16,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:16,644 INFO L85 PathProgramCache]: Analyzing trace with hash 39789687, now seen corresponding path program 5 times [2024-06-04 15:26:16,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:16,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718309939] [2024-06-04 15:26:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:16,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:17,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718309939] [2024-06-04 15:26:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718309939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:17,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:17,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:17,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804679011] [2024-06-04 15:26:17,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:17,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:17,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 200 transitions, 1764 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:26:17,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:17,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:17,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:18,026 INFO L124 PetriNetUnfolderBase]: 530/985 cut-off events. [2024-06-04 15:26:18,026 INFO L125 PetriNetUnfolderBase]: For 69063/69063 co-relation queries the response was YES. [2024-06-04 15:26:18,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5352 conditions, 985 events. 530/985 cut-off events. For 69063/69063 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5117 event pairs, 65 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 5231. Up to 947 conditions per place. [2024-06-04 15:26:18,034 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 197 selfloop transitions, 14 changer transitions 0/213 dead transitions. [2024-06-04 15:26:18,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 213 transitions, 2214 flow [2024-06-04 15:26:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:18,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 15:26:18,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 15:26:18,035 INFO L175 Difference]: Start difference. First operand has 258 places, 200 transitions, 1764 flow. Second operand 10 states and 106 transitions. [2024-06-04 15:26:18,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 213 transitions, 2214 flow [2024-06-04 15:26:18,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 213 transitions, 2082 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:26:18,190 INFO L231 Difference]: Finished difference. Result has 255 places, 200 transitions, 1664 flow [2024-06-04 15:26:18,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1664, PETRI_PLACES=255, PETRI_TRANSITIONS=200} [2024-06-04 15:26:18,191 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 15:26:18,191 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 200 transitions, 1664 flow [2024-06-04 15:26:18,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-06-04 15:26:18,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:18,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:18,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:26:18,191 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)] === [2024-06-04 15:26:18,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1907231943, now seen corresponding path program 9 times [2024-06-04 15:26:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:18,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396395331] [2024-06-04 15:26:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:18,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396395331] [2024-06-04 15:26:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396395331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:19,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:19,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:19,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23842781] [2024-06-04 15:26:19,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:19,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:19,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:19,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:19,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:19,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:19,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 200 transitions, 1664 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:19,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:19,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:19,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:19,518 INFO L124 PetriNetUnfolderBase]: 526/979 cut-off events. [2024-06-04 15:26:19,518 INFO L125 PetriNetUnfolderBase]: For 61569/61569 co-relation queries the response was YES. [2024-06-04 15:26:19,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5018 conditions, 979 events. 526/979 cut-off events. For 61569/61569 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5107 event pairs, 68 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 4898. Up to 931 conditions per place. [2024-06-04 15:26:19,527 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 17 changer transitions 0/214 dead transitions. [2024-06-04 15:26:19,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 214 transitions, 2118 flow [2024-06-04 15:26:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:26:19,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:26:19,528 INFO L175 Difference]: Start difference. First operand has 255 places, 200 transitions, 1664 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:26:19,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 214 transitions, 2118 flow [2024-06-04 15:26:19,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 214 transitions, 2029 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:19,676 INFO L231 Difference]: Finished difference. Result has 254 places, 200 transitions, 1614 flow [2024-06-04 15:26:19,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1614, PETRI_PLACES=254, PETRI_TRANSITIONS=200} [2024-06-04 15:26:19,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:26:19,677 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 200 transitions, 1614 flow [2024-06-04 15:26:19,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:19,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:19,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:19,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:26:19,677 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)] === [2024-06-04 15:26:19,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:19,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2123612251, now seen corresponding path program 10 times [2024-06-04 15:26:19,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:19,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061061887] [2024-06-04 15:26:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:19,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:20,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:20,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061061887] [2024-06-04 15:26:20,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061061887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:20,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:20,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738293115] [2024-06-04 15:26:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:20,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:20,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:20,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:20,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 200 transitions, 1614 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:20,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:20,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:20,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:20,959 INFO L124 PetriNetUnfolderBase]: 522/973 cut-off events. [2024-06-04 15:26:20,959 INFO L125 PetriNetUnfolderBase]: For 54867/54867 co-relation queries the response was YES. [2024-06-04 15:26:20,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 973 events. 522/973 cut-off events. For 54867/54867 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5103 event pairs, 63 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 4591. Up to 877 conditions per place. [2024-06-04 15:26:20,968 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 180 selfloop transitions, 32 changer transitions 0/214 dead transitions. [2024-06-04 15:26:20,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 214 transitions, 2068 flow [2024-06-04 15:26:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:26:20,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:26:20,969 INFO L175 Difference]: Start difference. First operand has 254 places, 200 transitions, 1614 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:26:20,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 214 transitions, 2068 flow [2024-06-04 15:26:21,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 214 transitions, 2013 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:21,106 INFO L231 Difference]: Finished difference. Result has 256 places, 200 transitions, 1628 flow [2024-06-04 15:26:21,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1628, PETRI_PLACES=256, PETRI_TRANSITIONS=200} [2024-06-04 15:26:21,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-04 15:26:21,107 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 200 transitions, 1628 flow [2024-06-04 15:26:21,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-06-04 15:26:21,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:21,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:21,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:26:21,107 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)] === [2024-06-04 15:26:21,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:21,107 INFO L85 PathProgramCache]: Analyzing trace with hash 557551653, now seen corresponding path program 1 times [2024-06-04 15:26:21,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:21,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965367753] [2024-06-04 15:26:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:21,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:22,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:22,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965367753] [2024-06-04 15:26:22,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965367753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:22,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:22,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:22,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590052548] [2024-06-04 15:26:22,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:22,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:22,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:22,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:22,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:22,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:22,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 200 transitions, 1628 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:22,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:22,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:22,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:22,642 INFO L124 PetriNetUnfolderBase]: 549/1034 cut-off events. [2024-06-04 15:26:22,642 INFO L125 PetriNetUnfolderBase]: For 103200/103200 co-relation queries the response was YES. [2024-06-04 15:26:22,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 1034 events. 549/1034 cut-off events. For 103200/103200 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5438 event pairs, 76 based on Foata normal form. 8/1040 useless extension candidates. Maximal degree in co-relation 5315. Up to 467 conditions per place. [2024-06-04 15:26:22,649 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 81 changer transitions 18/231 dead transitions. [2024-06-04 15:26:22,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 231 transitions, 2350 flow [2024-06-04 15:26:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:22,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:26:22,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:26:22,649 INFO L175 Difference]: Start difference. First operand has 256 places, 200 transitions, 1628 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:26:22,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 231 transitions, 2350 flow [2024-06-04 15:26:22,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 231 transitions, 2165 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:22,822 INFO L231 Difference]: Finished difference. Result has 256 places, 196 transitions, 1587 flow [2024-06-04 15:26:22,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1587, PETRI_PLACES=256, PETRI_TRANSITIONS=196} [2024-06-04 15:26:22,823 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-04 15:26:22,823 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 196 transitions, 1587 flow [2024-06-04 15:26:22,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:22,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:22,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:22,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:26:22,823 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)] === [2024-06-04 15:26:22,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1936549693, now seen corresponding path program 2 times [2024-06-04 15:26:22,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:22,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649619945] [2024-06-04 15:26:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:23,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649619945] [2024-06-04 15:26:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649619945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:23,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:23,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599986539] [2024-06-04 15:26:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:23,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:23,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:23,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:23,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:23,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:23,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 196 transitions, 1587 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:23,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:23,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:23,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:24,210 INFO L124 PetriNetUnfolderBase]: 568/1075 cut-off events. [2024-06-04 15:26:24,211 INFO L125 PetriNetUnfolderBase]: For 145817/145817 co-relation queries the response was YES. [2024-06-04 15:26:24,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 1075 events. 568/1075 cut-off events. For 145817/145817 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5710 event pairs, 91 based on Foata normal form. 8/1081 useless extension candidates. Maximal degree in co-relation 6317. Up to 566 conditions per place. [2024-06-04 15:26:24,220 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 83 changer transitions 16/231 dead transitions. [2024-06-04 15:26:24,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 231 transitions, 2341 flow [2024-06-04 15:26:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:24,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-04 15:26:24,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 15:26:24,221 INFO L175 Difference]: Start difference. First operand has 256 places, 196 transitions, 1587 flow. Second operand 11 states and 149 transitions. [2024-06-04 15:26:24,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 231 transitions, 2341 flow [2024-06-04 15:26:24,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 231 transitions, 2208 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:24,486 INFO L231 Difference]: Finished difference. Result has 251 places, 194 transitions, 1618 flow [2024-06-04 15:26:24,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1618, PETRI_PLACES=251, PETRI_TRANSITIONS=194} [2024-06-04 15:26:24,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-04 15:26:24,486 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 194 transitions, 1618 flow [2024-06-04 15:26:24,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:24,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:24,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:24,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:26:24,487 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)] === [2024-06-04 15:26:24,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:24,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1932974773, now seen corresponding path program 3 times [2024-06-04 15:26:24,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:24,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828557992] [2024-06-04 15:26:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:24,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:25,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:25,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828557992] [2024-06-04 15:26:25,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828557992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:25,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:25,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:25,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980938633] [2024-06-04 15:26:25,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:25,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:25,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:25,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:25,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:25,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:25,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 194 transitions, 1618 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:25,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:25,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:25,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:25,865 INFO L124 PetriNetUnfolderBase]: 554/1049 cut-off events. [2024-06-04 15:26:25,865 INFO L125 PetriNetUnfolderBase]: For 136270/136270 co-relation queries the response was YES. [2024-06-04 15:26:25,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6398 conditions, 1049 events. 554/1049 cut-off events. For 136270/136270 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5529 event pairs, 89 based on Foata normal form. 8/1055 useless extension candidates. Maximal degree in co-relation 6282. Up to 566 conditions per place. [2024-06-04 15:26:25,874 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 83 changer transitions 13/226 dead transitions. [2024-06-04 15:26:25,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 226 transitions, 2340 flow [2024-06-04 15:26:25,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 15:26:25,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 15:26:25,875 INFO L175 Difference]: Start difference. First operand has 251 places, 194 transitions, 1618 flow. Second operand 11 states and 146 transitions. [2024-06-04 15:26:25,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 226 transitions, 2340 flow [2024-06-04 15:26:26,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 226 transitions, 2225 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:26,143 INFO L231 Difference]: Finished difference. Result has 248 places, 191 transitions, 1656 flow [2024-06-04 15:26:26,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1656, PETRI_PLACES=248, PETRI_TRANSITIONS=191} [2024-06-04 15:26:26,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-04 15:26:26,144 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 191 transitions, 1656 flow [2024-06-04 15:26:26,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:26,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:26,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:26,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:26:26,144 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)] === [2024-06-04 15:26:26,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:26,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1932830623, now seen corresponding path program 4 times [2024-06-04 15:26:26,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:26,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447646476] [2024-06-04 15:26:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:26,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:27,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447646476] [2024-06-04 15:26:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447646476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:27,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340467891] [2024-06-04 15:26:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:27,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:27,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:27,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:27,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:27,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 191 transitions, 1656 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:27,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:27,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:27,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:27,621 INFO L124 PetriNetUnfolderBase]: 544/1031 cut-off events. [2024-06-04 15:26:27,622 INFO L125 PetriNetUnfolderBase]: For 130302/130302 co-relation queries the response was YES. [2024-06-04 15:26:27,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 1031 events. 544/1031 cut-off events. For 130302/130302 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5410 event pairs, 77 based on Foata normal form. 8/1037 useless extension candidates. Maximal degree in co-relation 6217. Up to 566 conditions per place. [2024-06-04 15:26:27,630 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 127 selfloop transitions, 83 changer transitions 10/222 dead transitions. [2024-06-04 15:26:27,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 222 transitions, 2364 flow [2024-06-04 15:26:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:26:27,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:26:27,631 INFO L175 Difference]: Start difference. First operand has 248 places, 191 transitions, 1656 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:26:27,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 222 transitions, 2364 flow [2024-06-04 15:26:27,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 222 transitions, 2178 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:27,842 INFO L231 Difference]: Finished difference. Result has 245 places, 189 transitions, 1627 flow [2024-06-04 15:26:27,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1627, PETRI_PLACES=245, PETRI_TRANSITIONS=189} [2024-06-04 15:26:27,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-04 15:26:27,843 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 189 transitions, 1627 flow [2024-06-04 15:26:27,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:27,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:27,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:27,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:26:27,843 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)] === [2024-06-04 15:26:27,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:27,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1932825043, now seen corresponding path program 5 times [2024-06-04 15:26:27,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:27,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623350765] [2024-06-04 15:26:27,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:27,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:28,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:28,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623350765] [2024-06-04 15:26:28,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623350765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:28,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:28,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:28,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421861373] [2024-06-04 15:26:28,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:28,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:28,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:28,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:28,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:28,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:28,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 189 transitions, 1627 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:28,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:28,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:28,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:29,035 INFO L124 PetriNetUnfolderBase]: 513/970 cut-off events. [2024-06-04 15:26:29,035 INFO L125 PetriNetUnfolderBase]: For 99248/99248 co-relation queries the response was YES. [2024-06-04 15:26:29,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5272 conditions, 970 events. 513/970 cut-off events. For 99248/99248 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5014 event pairs, 68 based on Foata normal form. 10/978 useless extension candidates. Maximal degree in co-relation 5159. Up to 566 conditions per place. [2024-06-04 15:26:29,041 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 78 changer transitions 23/215 dead transitions. [2024-06-04 15:26:29,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 215 transitions, 2129 flow [2024-06-04 15:26:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:26:29,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:26:29,042 INFO L175 Difference]: Start difference. First operand has 245 places, 189 transitions, 1627 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:26:29,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 215 transitions, 2129 flow [2024-06-04 15:26:29,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 215 transitions, 1961 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:29,218 INFO L231 Difference]: Finished difference. Result has 244 places, 183 transitions, 1573 flow [2024-06-04 15:26:29,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1573, PETRI_PLACES=244, PETRI_TRANSITIONS=183} [2024-06-04 15:26:29,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 15:26:29,218 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 183 transitions, 1573 flow [2024-06-04 15:26:29,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:29,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:29,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:29,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:26:29,219 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)] === [2024-06-04 15:26:29,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash -82483727, now seen corresponding path program 6 times [2024-06-04 15:26:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:29,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446778849] [2024-06-04 15:26:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:30,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:30,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446778849] [2024-06-04 15:26:30,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446778849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:30,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:30,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:30,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658353117] [2024-06-04 15:26:30,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:30,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:30,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:30,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:30,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:30,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:30,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 183 transitions, 1573 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:30,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:30,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:30,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:30,550 INFO L124 PetriNetUnfolderBase]: 508/959 cut-off events. [2024-06-04 15:26:30,551 INFO L125 PetriNetUnfolderBase]: For 96905/96905 co-relation queries the response was YES. [2024-06-04 15:26:30,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 959 events. 508/959 cut-off events. For 96905/96905 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4938 event pairs, 72 based on Foata normal form. 10/967 useless extension candidates. Maximal degree in co-relation 5085. Up to 720 conditions per place. [2024-06-04 15:26:30,558 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 43 changer transitions 14/208 dead transitions. [2024-06-04 15:26:30,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 208 transitions, 2071 flow [2024-06-04 15:26:30,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:26:30,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:26:30,559 INFO L175 Difference]: Start difference. First operand has 244 places, 183 transitions, 1573 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:26:30,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 208 transitions, 2071 flow [2024-06-04 15:26:30,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 208 transitions, 1842 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:30,731 INFO L231 Difference]: Finished difference. Result has 235 places, 182 transitions, 1434 flow [2024-06-04 15:26:30,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1434, PETRI_PLACES=235, PETRI_TRANSITIONS=182} [2024-06-04 15:26:30,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-04 15:26:30,732 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 182 transitions, 1434 flow [2024-06-04 15:26:30,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:30,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:30,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:30,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:26:30,732 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)] === [2024-06-04 15:26:30,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:30,732 INFO L85 PathProgramCache]: Analyzing trace with hash -82489307, now seen corresponding path program 7 times [2024-06-04 15:26:30,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:30,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604303705] [2024-06-04 15:26:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:30,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:31,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:31,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604303705] [2024-06-04 15:26:31,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604303705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:31,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:31,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:31,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774314941] [2024-06-04 15:26:31,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:31,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:31,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:31,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:31,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:31,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:31,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 182 transitions, 1434 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:31,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:31,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:31,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:32,084 INFO L124 PetriNetUnfolderBase]: 496/939 cut-off events. [2024-06-04 15:26:32,085 INFO L125 PetriNetUnfolderBase]: For 85428/85428 co-relation queries the response was YES. [2024-06-04 15:26:32,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 939 events. 496/939 cut-off events. For 85428/85428 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4833 event pairs, 68 based on Foata normal form. 8/945 useless extension candidates. Maximal degree in co-relation 4833. Up to 710 conditions per place. [2024-06-04 15:26:32,093 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 41 changer transitions 14/204 dead transitions. [2024-06-04 15:26:32,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 204 transitions, 1898 flow [2024-06-04 15:26:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:26:32,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:26:32,094 INFO L175 Difference]: Start difference. First operand has 235 places, 182 transitions, 1434 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:26:32,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 204 transitions, 1898 flow [2024-06-04 15:26:32,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 204 transitions, 1806 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:32,224 INFO L231 Difference]: Finished difference. Result has 234 places, 179 transitions, 1399 flow [2024-06-04 15:26:32,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1399, PETRI_PLACES=234, PETRI_TRANSITIONS=179} [2024-06-04 15:26:32,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-04 15:26:32,224 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 179 transitions, 1399 flow [2024-06-04 15:26:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:32,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:32,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:32,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:26:32,225 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)] === [2024-06-04 15:26:32,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:32,225 INFO L85 PathProgramCache]: Analyzing trace with hash -87995837, now seen corresponding path program 8 times [2024-06-04 15:26:32,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:32,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207360920] [2024-06-04 15:26:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:32,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:33,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207360920] [2024-06-04 15:26:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207360920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:33,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:33,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295484967] [2024-06-04 15:26:33,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:33,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:33,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:33,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:33,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:33,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 179 transitions, 1399 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:33,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:33,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:33,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:33,565 INFO L124 PetriNetUnfolderBase]: 528/1003 cut-off events. [2024-06-04 15:26:33,565 INFO L125 PetriNetUnfolderBase]: For 117976/117976 co-relation queries the response was YES. [2024-06-04 15:26:33,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5919 conditions, 1003 events. 528/1003 cut-off events. For 117976/117976 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5242 event pairs, 81 based on Foata normal form. 8/1009 useless extension candidates. Maximal degree in co-relation 5809. Up to 682 conditions per place. [2024-06-04 15:26:33,573 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 43 changer transitions 13/211 dead transitions. [2024-06-04 15:26:33,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 211 transitions, 2087 flow [2024-06-04 15:26:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:26:33,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:26:33,574 INFO L175 Difference]: Start difference. First operand has 234 places, 179 transitions, 1399 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:26:33,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 211 transitions, 2087 flow [2024-06-04 15:26:33,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 211 transitions, 1993 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:33,764 INFO L231 Difference]: Finished difference. Result has 233 places, 179 transitions, 1398 flow [2024-06-04 15:26:33,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1398, PETRI_PLACES=233, PETRI_TRANSITIONS=179} [2024-06-04 15:26:33,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-04 15:26:33,764 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 179 transitions, 1398 flow [2024-06-04 15:26:33,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:33,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:33,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:33,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:26:33,765 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)] === [2024-06-04 15:26:33,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:33,765 INFO L85 PathProgramCache]: Analyzing trace with hash -87846107, now seen corresponding path program 9 times [2024-06-04 15:26:33,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:33,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404121619] [2024-06-04 15:26:33,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:33,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:34,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:34,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404121619] [2024-06-04 15:26:34,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404121619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:34,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:34,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:34,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553354717] [2024-06-04 15:26:34,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:34,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:34,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:34,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:34,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:34,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:34,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 179 transitions, 1398 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:34,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:34,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:34,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:35,193 INFO L124 PetriNetUnfolderBase]: 515/980 cut-off events. [2024-06-04 15:26:35,193 INFO L125 PetriNetUnfolderBase]: For 117961/117961 co-relation queries the response was YES. [2024-06-04 15:26:35,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5687 conditions, 980 events. 515/980 cut-off events. For 117961/117961 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5101 event pairs, 90 based on Foata normal form. 10/988 useless extension candidates. Maximal degree in co-relation 5577. Up to 738 conditions per place. [2024-06-04 15:26:35,200 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 42 changer transitions 14/202 dead transitions. [2024-06-04 15:26:35,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 202 transitions, 1866 flow [2024-06-04 15:26:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:26:35,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:26:35,203 INFO L175 Difference]: Start difference. First operand has 233 places, 179 transitions, 1398 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:26:35,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 202 transitions, 1866 flow [2024-06-04 15:26:35,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 202 transitions, 1781 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:35,360 INFO L231 Difference]: Finished difference. Result has 232 places, 176 transitions, 1373 flow [2024-06-04 15:26:35,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1373, PETRI_PLACES=232, PETRI_TRANSITIONS=176} [2024-06-04 15:26:35,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-04 15:26:35,361 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 176 transitions, 1373 flow [2024-06-04 15:26:35,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:35,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:35,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:35,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:26:35,361 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)] === [2024-06-04 15:26:35,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:35,361 INFO L85 PathProgramCache]: Analyzing trace with hash -87851687, now seen corresponding path program 10 times [2024-06-04 15:26:35,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:35,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594056816] [2024-06-04 15:26:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:35,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:36,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:36,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594056816] [2024-06-04 15:26:36,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594056816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:36,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:36,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:36,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542473568] [2024-06-04 15:26:36,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:36,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:36,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:36,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:36,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:36,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:36,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 176 transitions, 1373 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:36,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:36,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:36,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:36,624 INFO L124 PetriNetUnfolderBase]: 481/914 cut-off events. [2024-06-04 15:26:36,625 INFO L125 PetriNetUnfolderBase]: For 85386/85386 co-relation queries the response was YES. [2024-06-04 15:26:36,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 914 events. 481/914 cut-off events. For 85386/85386 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4685 event pairs, 68 based on Foata normal form. 8/920 useless extension candidates. Maximal degree in co-relation 4711. Up to 682 conditions per place. [2024-06-04 15:26:36,631 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 141 selfloop transitions, 39 changer transitions 16/198 dead transitions. [2024-06-04 15:26:36,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 198 transitions, 1825 flow [2024-06-04 15:26:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:26:36,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:26:36,632 INFO L175 Difference]: Start difference. First operand has 232 places, 176 transitions, 1373 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:26:36,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 198 transitions, 1825 flow [2024-06-04 15:26:36,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 198 transitions, 1731 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:36,761 INFO L231 Difference]: Finished difference. Result has 230 places, 172 transitions, 1322 flow [2024-06-04 15:26:36,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1322, PETRI_PLACES=230, PETRI_TRANSITIONS=172} [2024-06-04 15:26:36,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-04 15:26:36,762 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 172 transitions, 1322 flow [2024-06-04 15:26:36,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:36,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:36,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:26:36,763 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)] === [2024-06-04 15:26:36,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:36,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1171099811, now seen corresponding path program 11 times [2024-06-04 15:26:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504300361] [2024-06-04 15:26:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:37,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:37,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504300361] [2024-06-04 15:26:37,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504300361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:37,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:37,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:37,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995574738] [2024-06-04 15:26:37,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:37,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:37,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:37,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:37,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:37,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:37,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 172 transitions, 1322 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:37,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:37,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:37,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:38,134 INFO L124 PetriNetUnfolderBase]: 502/957 cut-off events. [2024-06-04 15:26:38,134 INFO L125 PetriNetUnfolderBase]: For 117932/117932 co-relation queries the response was YES. [2024-06-04 15:26:38,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5714 conditions, 957 events. 502/957 cut-off events. For 117932/117932 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4917 event pairs, 83 based on Foata normal form. 8/963 useless extension candidates. Maximal degree in co-relation 5607. Up to 607 conditions per place. [2024-06-04 15:26:38,141 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 42 changer transitions 16/202 dead transitions. [2024-06-04 15:26:38,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 202 transitions, 1978 flow [2024-06-04 15:26:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 15:26:38,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 15:26:38,142 INFO L175 Difference]: Start difference. First operand has 230 places, 172 transitions, 1322 flow. Second operand 11 states and 146 transitions. [2024-06-04 15:26:38,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 202 transitions, 1978 flow [2024-06-04 15:26:38,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 202 transitions, 1886 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:38,295 INFO L231 Difference]: Finished difference. Result has 223 places, 168 transitions, 1296 flow [2024-06-04 15:26:38,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1296, PETRI_PLACES=223, PETRI_TRANSITIONS=168} [2024-06-04 15:26:38,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-04 15:26:38,296 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 168 transitions, 1296 flow [2024-06-04 15:26:38,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:38,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:38,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:38,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:26:38,296 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)] === [2024-06-04 15:26:38,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1167524891, now seen corresponding path program 12 times [2024-06-04 15:26:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:38,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814749566] [2024-06-04 15:26:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:38,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:39,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:39,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814749566] [2024-06-04 15:26:39,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814749566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:39,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:39,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:39,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424496524] [2024-06-04 15:26:39,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:39,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:39,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:39,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:39,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:39,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:39,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 168 transitions, 1296 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:39,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:39,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:39,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:39,699 INFO L124 PetriNetUnfolderBase]: 488/931 cut-off events. [2024-06-04 15:26:39,699 INFO L125 PetriNetUnfolderBase]: For 117892/117892 co-relation queries the response was YES. [2024-06-04 15:26:39,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5629 conditions, 931 events. 488/931 cut-off events. For 117892/117892 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4733 event pairs, 81 based on Foata normal form. 8/937 useless extension candidates. Maximal degree in co-relation 5525. Up to 607 conditions per place. [2024-06-04 15:26:39,728 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 42 changer transitions 13/197 dead transitions. [2024-06-04 15:26:39,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 197 transitions, 1940 flow [2024-06-04 15:26:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:26:39,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:26:39,729 INFO L175 Difference]: Start difference. First operand has 223 places, 168 transitions, 1296 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:26:39,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 197 transitions, 1940 flow [2024-06-04 15:26:39,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 197 transitions, 1844 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:39,863 INFO L231 Difference]: Finished difference. Result has 218 places, 165 transitions, 1276 flow [2024-06-04 15:26:39,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1276, PETRI_PLACES=218, PETRI_TRANSITIONS=165} [2024-06-04 15:26:39,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-04 15:26:39,864 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 165 transitions, 1276 flow [2024-06-04 15:26:39,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:39,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:39,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:39,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:26:39,864 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)] === [2024-06-04 15:26:39,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1167380741, now seen corresponding path program 13 times [2024-06-04 15:26:39,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:39,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445351955] [2024-06-04 15:26:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:39,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:40,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445351955] [2024-06-04 15:26:40,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445351955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:40,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:40,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:40,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531463503] [2024-06-04 15:26:40,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:40,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:40,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:40,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:40,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:40,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 165 transitions, 1276 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:40,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:40,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:40,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:41,225 INFO L124 PetriNetUnfolderBase]: 478/913 cut-off events. [2024-06-04 15:26:41,225 INFO L125 PetriNetUnfolderBase]: For 109379/109379 co-relation queries the response was YES. [2024-06-04 15:26:41,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5494 conditions, 913 events. 478/913 cut-off events. For 109379/109379 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4617 event pairs, 75 based on Foata normal form. 8/919 useless extension candidates. Maximal degree in co-relation 5393. Up to 607 conditions per place. [2024-06-04 15:26:41,233 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 42 changer transitions 10/193 dead transitions. [2024-06-04 15:26:41,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 193 transitions, 1904 flow [2024-06-04 15:26:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:26:41,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:26:41,234 INFO L175 Difference]: Start difference. First operand has 218 places, 165 transitions, 1276 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:26:41,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 193 transitions, 1904 flow [2024-06-04 15:26:41,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 193 transitions, 1811 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:41,363 INFO L231 Difference]: Finished difference. Result has 215 places, 163 transitions, 1261 flow [2024-06-04 15:26:41,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1261, PETRI_PLACES=215, PETRI_TRANSITIONS=163} [2024-06-04 15:26:41,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 15:26:41,363 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 163 transitions, 1261 flow [2024-06-04 15:26:41,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:41,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:41,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:41,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:26:41,363 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)] === [2024-06-04 15:26:41,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash -226374257, now seen corresponding path program 14 times [2024-06-04 15:26:41,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:41,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033347073] [2024-06-04 15:26:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:41,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:42,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033347073] [2024-06-04 15:26:42,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033347073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:42,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:42,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191165646] [2024-06-04 15:26:42,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:42,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:42,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:42,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:42,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:42,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 163 transitions, 1261 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:42,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:42,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:42,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:42,601 INFO L124 PetriNetUnfolderBase]: 447/852 cut-off events. [2024-06-04 15:26:42,602 INFO L125 PetriNetUnfolderBase]: For 80966/80966 co-relation queries the response was YES. [2024-06-04 15:26:42,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4504 conditions, 852 events. 447/852 cut-off events. For 80966/80966 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4226 event pairs, 66 based on Foata normal form. 10/860 useless extension candidates. Maximal degree in co-relation 4405. Up to 607 conditions per place. [2024-06-04 15:26:42,607 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 36 changer transitions 22/186 dead transitions. [2024-06-04 15:26:42,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 186 transitions, 1697 flow [2024-06-04 15:26:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:26:42,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:26:42,608 INFO L175 Difference]: Start difference. First operand has 215 places, 163 transitions, 1261 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:26:42,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 186 transitions, 1697 flow [2024-06-04 15:26:42,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 186 transitions, 1564 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:42,704 INFO L231 Difference]: Finished difference. Result has 214 places, 155 transitions, 1150 flow [2024-06-04 15:26:42,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1150, PETRI_PLACES=214, PETRI_TRANSITIONS=155} [2024-06-04 15:26:42,704 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-04 15:26:42,704 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 155 transitions, 1150 flow [2024-06-04 15:26:42,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:42,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:42,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:42,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:26:42,705 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)] === [2024-06-04 15:26:42,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:42,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1789276155, now seen corresponding path program 15 times [2024-06-04 15:26:42,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:42,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785346553] [2024-06-04 15:26:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:42,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:43,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785346553] [2024-06-04 15:26:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785346553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:43,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:43,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436152370] [2024-06-04 15:26:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:43,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:43,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:43,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:43,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:43,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 155 transitions, 1150 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:43,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:43,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:43,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:44,058 INFO L124 PetriNetUnfolderBase]: 397/742 cut-off events. [2024-06-04 15:26:44,058 INFO L125 PetriNetUnfolderBase]: For 75096/75096 co-relation queries the response was YES. [2024-06-04 15:26:44,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4057 conditions, 742 events. 397/742 cut-off events. For 75096/75096 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3537 event pairs, 44 based on Foata normal form. 8/748 useless extension candidates. Maximal degree in co-relation 3958. Up to 285 conditions per place. [2024-06-04 15:26:44,063 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 79 changer transitions 13/180 dead transitions. [2024-06-04 15:26:44,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 180 transitions, 1728 flow [2024-06-04 15:26:44,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:26:44,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:26:44,063 INFO L175 Difference]: Start difference. First operand has 214 places, 155 transitions, 1150 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:26:44,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 180 transitions, 1728 flow [2024-06-04 15:26:44,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 180 transitions, 1603 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-04 15:26:44,145 INFO L231 Difference]: Finished difference. Result has 201 places, 151 transitions, 1176 flow [2024-06-04 15:26:44,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1176, PETRI_PLACES=201, PETRI_TRANSITIONS=151} [2024-06-04 15:26:44,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-04 15:26:44,145 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 151 transitions, 1176 flow [2024-06-04 15:26:44,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:44,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:44,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:44,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:26:44,146 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)] === [2024-06-04 15:26:44,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:44,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1499796077, now seen corresponding path program 16 times [2024-06-04 15:26:44,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:44,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940036884] [2024-06-04 15:26:44,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:44,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:45,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:45,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940036884] [2024-06-04 15:26:45,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940036884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:45,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:45,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:45,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582996708] [2024-06-04 15:26:45,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:45,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:45,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:45,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:45,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 151 transitions, 1176 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:45,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:45,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:45,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:45,635 INFO L124 PetriNetUnfolderBase]: 387/724 cut-off events. [2024-06-04 15:26:45,635 INFO L125 PetriNetUnfolderBase]: For 72667/72667 co-relation queries the response was YES. [2024-06-04 15:26:45,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 724 events. 387/724 cut-off events. For 72667/72667 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3451 event pairs, 60 based on Foata normal form. 10/732 useless extension candidates. Maximal degree in co-relation 3933. Up to 531 conditions per place. [2024-06-04 15:26:45,640 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 38 changer transitions 11/171 dead transitions. [2024-06-04 15:26:45,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 171 transitions, 1574 flow [2024-06-04 15:26:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:45,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:26:45,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:26:45,652 INFO L175 Difference]: Start difference. First operand has 201 places, 151 transitions, 1176 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:26:45,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 171 transitions, 1574 flow [2024-06-04 15:26:45,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 171 transitions, 1443 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:45,727 INFO L231 Difference]: Finished difference. Result has 196 places, 148 transitions, 1103 flow [2024-06-04 15:26:45,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1103, PETRI_PLACES=196, PETRI_TRANSITIONS=148} [2024-06-04 15:26:45,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-04 15:26:45,727 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 148 transitions, 1103 flow [2024-06-04 15:26:45,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:45,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:45,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:45,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:26:45,728 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)] === [2024-06-04 15:26:45,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:45,728 INFO L85 PathProgramCache]: Analyzing trace with hash -558800753, now seen corresponding path program 17 times [2024-06-04 15:26:45,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:45,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464881945] [2024-06-04 15:26:45,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:45,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:46,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464881945] [2024-06-04 15:26:46,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464881945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:46,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:46,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:46,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479343461] [2024-06-04 15:26:46,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:46,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:46,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:46,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:46,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:46,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:46,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 148 transitions, 1103 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:46,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:46,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:46,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:46,997 INFO L124 PetriNetUnfolderBase]: 379/712 cut-off events. [2024-06-04 15:26:46,997 INFO L125 PetriNetUnfolderBase]: For 61865/61865 co-relation queries the response was YES. [2024-06-04 15:26:47,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3889 conditions, 712 events. 379/712 cut-off events. For 61865/61865 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3382 event pairs, 46 based on Foata normal form. 8/718 useless extension candidates. Maximal degree in co-relation 3797. Up to 507 conditions per place. [2024-06-04 15:26:47,001 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 115 selfloop transitions, 39 changer transitions 13/169 dead transitions. [2024-06-04 15:26:47,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 169 transitions, 1494 flow [2024-06-04 15:26:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:26:47,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:26:47,002 INFO L175 Difference]: Start difference. First operand has 196 places, 148 transitions, 1103 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:26:47,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 169 transitions, 1494 flow [2024-06-04 15:26:47,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 169 transitions, 1414 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:47,071 INFO L231 Difference]: Finished difference. Result has 195 places, 145 transitions, 1082 flow [2024-06-04 15:26:47,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1082, PETRI_PLACES=195, PETRI_TRANSITIONS=145} [2024-06-04 15:26:47,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-04 15:26:47,072 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 145 transitions, 1082 flow [2024-06-04 15:26:47,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:47,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:47,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:47,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:26:47,072 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)] === [2024-06-04 15:26:47,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1305646921, now seen corresponding path program 1 times [2024-06-04 15:26:47,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:47,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345357472] [2024-06-04 15:26:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:47,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:47,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345357472] [2024-06-04 15:26:47,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345357472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:47,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:47,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:47,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337760244] [2024-06-04 15:26:47,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:47,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:47,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:47,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:47,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:48,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:48,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 145 transitions, 1082 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:48,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:48,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:48,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:48,253 INFO L124 PetriNetUnfolderBase]: 369/686 cut-off events. [2024-06-04 15:26:48,253 INFO L125 PetriNetUnfolderBase]: For 46525/46525 co-relation queries the response was YES. [2024-06-04 15:26:48,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3815 conditions, 686 events. 369/686 cut-off events. For 46525/46525 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3210 event pairs, 52 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 3723. Up to 537 conditions per place. [2024-06-04 15:26:48,257 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 40 changer transitions 0/163 dead transitions. [2024-06-04 15:26:48,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 163 transitions, 1461 flow [2024-06-04 15:26:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:26:48,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:26:48,258 INFO L175 Difference]: Start difference. First operand has 195 places, 145 transitions, 1082 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:26:48,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 163 transitions, 1461 flow [2024-06-04 15:26:48,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 163 transitions, 1373 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:48,320 INFO L231 Difference]: Finished difference. Result has 190 places, 148 transitions, 1105 flow [2024-06-04 15:26:48,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1105, PETRI_PLACES=190, PETRI_TRANSITIONS=148} [2024-06-04 15:26:48,320 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-04 15:26:48,320 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 148 transitions, 1105 flow [2024-06-04 15:26:48,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:48,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:48,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:48,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:26:48,321 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)] === [2024-06-04 15:26:48,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1505308187, now seen corresponding path program 18 times [2024-06-04 15:26:48,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:48,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931426077] [2024-06-04 15:26:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:49,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:49,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931426077] [2024-06-04 15:26:49,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931426077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:49,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:49,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380431650] [2024-06-04 15:26:49,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:49,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:49,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:49,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:49,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:49,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:49,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 148 transitions, 1105 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:49,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:49,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:49,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:49,733 INFO L124 PetriNetUnfolderBase]: 432/819 cut-off events. [2024-06-04 15:26:49,733 INFO L125 PetriNetUnfolderBase]: For 98226/98226 co-relation queries the response was YES. [2024-06-04 15:26:49,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5383 conditions, 819 events. 432/819 cut-off events. For 98226/98226 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4061 event pairs, 89 based on Foata normal form. 8/825 useless extension candidates. Maximal degree in co-relation 5293. Up to 442 conditions per place. [2024-06-04 15:26:49,737 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 45 changer transitions 10/175 dead transitions. [2024-06-04 15:26:49,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 175 transitions, 1677 flow [2024-06-04 15:26:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:26:49,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:26:49,738 INFO L175 Difference]: Start difference. First operand has 190 places, 148 transitions, 1105 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:26:49,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 175 transitions, 1677 flow [2024-06-04 15:26:49,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 175 transitions, 1595 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:26:49,841 INFO L231 Difference]: Finished difference. Result has 194 places, 145 transitions, 1098 flow [2024-06-04 15:26:49,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1098, PETRI_PLACES=194, PETRI_TRANSITIONS=145} [2024-06-04 15:26:49,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-04 15:26:49,842 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 145 transitions, 1098 flow [2024-06-04 15:26:49,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:49,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:49,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:49,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:26:49,842 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)] === [2024-06-04 15:26:49,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1505164037, now seen corresponding path program 19 times [2024-06-04 15:26:49,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:49,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844868350] [2024-06-04 15:26:49,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:49,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:50,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:50,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844868350] [2024-06-04 15:26:50,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844868350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:50,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:50,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:50,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714926024] [2024-06-04 15:26:50,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:50,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:50,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:50,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:50,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:50,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 145 transitions, 1098 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:50,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:50,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:50,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:51,322 INFO L124 PetriNetUnfolderBase]: 451/860 cut-off events. [2024-06-04 15:26:51,322 INFO L125 PetriNetUnfolderBase]: For 124278/124278 co-relation queries the response was YES. [2024-06-04 15:26:51,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6222 conditions, 860 events. 451/860 cut-off events. For 124278/124278 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4342 event pairs, 102 based on Foata normal form. 8/866 useless extension candidates. Maximal degree in co-relation 6131. Up to 581 conditions per place. [2024-06-04 15:26:51,328 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 45 changer transitions 7/171 dead transitions. [2024-06-04 15:26:51,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 171 transitions, 1656 flow [2024-06-04 15:26:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:26:51,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:26:51,329 INFO L175 Difference]: Start difference. First operand has 194 places, 145 transitions, 1098 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:26:51,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 171 transitions, 1656 flow [2024-06-04 15:26:51,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 171 transitions, 1564 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:51,437 INFO L231 Difference]: Finished difference. Result has 191 places, 143 transitions, 1091 flow [2024-06-04 15:26:51,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1091, PETRI_PLACES=191, PETRI_TRANSITIONS=143} [2024-06-04 15:26:51,437 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-04 15:26:51,437 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 143 transitions, 1091 flow [2024-06-04 15:26:51,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:51,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:51,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:51,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:26:51,437 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)] === [2024-06-04 15:26:51,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1305862247, now seen corresponding path program 20 times [2024-06-04 15:26:51,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:51,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922238914] [2024-06-04 15:26:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:51,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:52,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:52,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922238914] [2024-06-04 15:26:52,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922238914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:52,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:52,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930133533] [2024-06-04 15:26:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:52,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:52,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:52,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:52,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:52,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:52,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 143 transitions, 1091 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:52,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:52,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:52,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:52,872 INFO L124 PetriNetUnfolderBase]: 445/850 cut-off events. [2024-06-04 15:26:52,872 INFO L125 PetriNetUnfolderBase]: For 117099/117099 co-relation queries the response was YES. [2024-06-04 15:26:52,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6118 conditions, 850 events. 445/850 cut-off events. For 117099/117099 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4276 event pairs, 102 based on Foata normal form. 8/856 useless extension candidates. Maximal degree in co-relation 6029. Up to 519 conditions per place. [2024-06-04 15:26:52,877 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 42 changer transitions 7/169 dead transitions. [2024-06-04 15:26:52,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 169 transitions, 1647 flow [2024-06-04 15:26:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:52,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:26:52,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:26:52,878 INFO L175 Difference]: Start difference. First operand has 191 places, 143 transitions, 1091 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:26:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 169 transitions, 1647 flow [2024-06-04 15:26:52,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 169 transitions, 1551 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:52,974 INFO L231 Difference]: Finished difference. Result has 190 places, 141 transitions, 1070 flow [2024-06-04 15:26:52,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1070, PETRI_PLACES=190, PETRI_TRANSITIONS=141} [2024-06-04 15:26:52,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-04 15:26:52,974 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 141 transitions, 1070 flow [2024-06-04 15:26:52,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:52,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:52,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:52,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:26:52,975 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)] === [2024-06-04 15:26:52,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:52,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1505158457, now seen corresponding path program 21 times [2024-06-04 15:26:52,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:52,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270822212] [2024-06-04 15:26:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:52,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:53,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:53,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270822212] [2024-06-04 15:26:53,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270822212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:53,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:53,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657698031] [2024-06-04 15:26:53,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:53,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:53,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:54,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:54,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 141 transitions, 1070 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:54,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:54,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:54,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:54,331 INFO L124 PetriNetUnfolderBase]: 414/789 cut-off events. [2024-06-04 15:26:54,332 INFO L125 PetriNetUnfolderBase]: For 96825/96825 co-relation queries the response was YES. [2024-06-04 15:26:54,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5237 conditions, 789 events. 414/789 cut-off events. For 96825/96825 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3866 event pairs, 83 based on Foata normal form. 10/797 useless extension candidates. Maximal degree in co-relation 5149. Up to 549 conditions per place. [2024-06-04 15:26:54,337 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 42 changer transitions 16/163 dead transitions. [2024-06-04 15:26:54,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 163 transitions, 1456 flow [2024-06-04 15:26:54,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:26:54,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:26:54,338 INFO L175 Difference]: Start difference. First operand has 190 places, 141 transitions, 1070 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:26:54,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 163 transitions, 1456 flow [2024-06-04 15:26:54,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 163 transitions, 1374 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:54,438 INFO L231 Difference]: Finished difference. Result has 189 places, 134 transitions, 1025 flow [2024-06-04 15:26:54,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1025, PETRI_PLACES=189, PETRI_TRANSITIONS=134} [2024-06-04 15:26:54,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-04 15:26:54,439 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 134 transitions, 1025 flow [2024-06-04 15:26:54,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:54,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:54,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:54,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:26:54,439 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)] === [2024-06-04 15:26:54,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1931523375, now seen corresponding path program 22 times [2024-06-04 15:26:54,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:54,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056482486] [2024-06-04 15:26:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:54,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:55,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:55,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056482486] [2024-06-04 15:26:55,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056482486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:55,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:55,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557706529] [2024-06-04 15:26:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:55,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:55,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:55,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:55,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:55,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 134 transitions, 1025 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:55,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:55,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:55,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:55,920 INFO L124 PetriNetUnfolderBase]: 432/827 cut-off events. [2024-06-04 15:26:55,920 INFO L125 PetriNetUnfolderBase]: For 110146/110146 co-relation queries the response was YES. [2024-06-04 15:26:55,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 827 events. 432/827 cut-off events. For 110146/110146 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4143 event pairs, 100 based on Foata normal form. 8/833 useless extension candidates. Maximal degree in co-relation 5855. Up to 572 conditions per place. [2024-06-04 15:26:55,926 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 43 changer transitions 7/161 dead transitions. [2024-06-04 15:26:55,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 161 transitions, 1567 flow [2024-06-04 15:26:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:26:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:26:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 15:26:55,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 15:26:55,928 INFO L175 Difference]: Start difference. First operand has 189 places, 134 transitions, 1025 flow. Second operand 12 states and 143 transitions. [2024-06-04 15:26:55,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 161 transitions, 1567 flow [2024-06-04 15:26:56,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 161 transitions, 1463 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-04 15:26:56,014 INFO L231 Difference]: Finished difference. Result has 182 places, 134 transitions, 1026 flow [2024-06-04 15:26:56,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1026, PETRI_PLACES=182, PETRI_TRANSITIONS=134} [2024-06-04 15:26:56,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-04 15:26:56,014 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 134 transitions, 1026 flow [2024-06-04 15:26:56,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:56,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:56,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:26:56,015 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)] === [2024-06-04 15:26:56,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:56,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1793000805, now seen corresponding path program 23 times [2024-06-04 15:26:56,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:56,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310702635] [2024-06-04 15:26:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:56,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:56,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:56,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310702635] [2024-06-04 15:26:56,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310702635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:56,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:56,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:56,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135608009] [2024-06-04 15:26:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:56,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:56,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:56,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 134 transitions, 1026 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:56,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:56,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:56,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:57,198 INFO L124 PetriNetUnfolderBase]: 430/825 cut-off events. [2024-06-04 15:26:57,198 INFO L125 PetriNetUnfolderBase]: For 100387/100387 co-relation queries the response was YES. [2024-06-04 15:26:57,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 825 events. 430/825 cut-off events. For 100387/100387 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4134 event pairs, 94 based on Foata normal form. 10/833 useless extension candidates. Maximal degree in co-relation 5673. Up to 514 conditions per place. [2024-06-04 15:26:57,203 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 70 changer transitions 11/155 dead transitions. [2024-06-04 15:26:57,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 155 transitions, 1394 flow [2024-06-04 15:26:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:26:57,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:26:57,204 INFO L175 Difference]: Start difference. First operand has 182 places, 134 transitions, 1026 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:26:57,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 155 transitions, 1394 flow [2024-06-04 15:26:57,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 155 transitions, 1306 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:57,295 INFO L231 Difference]: Finished difference. Result has 181 places, 131 transitions, 1056 flow [2024-06-04 15:26:57,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1056, PETRI_PLACES=181, PETRI_TRANSITIONS=131} [2024-06-04 15:26:57,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-04 15:26:57,295 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 131 transitions, 1056 flow [2024-06-04 15:26:57,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:57,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:57,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:57,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:26:57,296 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)] === [2024-06-04 15:26:57,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1305856667, now seen corresponding path program 24 times [2024-06-04 15:26:57,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:57,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374989834] [2024-06-04 15:26:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:57,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:58,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:58,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374989834] [2024-06-04 15:26:58,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374989834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:58,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:58,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:58,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025086686] [2024-06-04 15:26:58,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:58,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:58,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:58,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:26:58,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 131 transitions, 1056 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:58,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:58,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:26:58,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:58,728 INFO L124 PetriNetUnfolderBase]: 422/813 cut-off events. [2024-06-04 15:26:58,728 INFO L125 PetriNetUnfolderBase]: For 100585/100585 co-relation queries the response was YES. [2024-06-04 15:26:58,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 813 events. 422/813 cut-off events. For 100585/100585 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4093 event pairs, 108 based on Foata normal form. 10/821 useless extension candidates. Maximal degree in co-relation 5695. Up to 606 conditions per place. [2024-06-04 15:26:58,733 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 40 changer transitions 10/154 dead transitions. [2024-06-04 15:26:58,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 154 transitions, 1426 flow [2024-06-04 15:26:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:26:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:26:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:26:58,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 15:26:58,734 INFO L175 Difference]: Start difference. First operand has 181 places, 131 transitions, 1056 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:26:58,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 154 transitions, 1426 flow [2024-06-04 15:26:58,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 154 transitions, 1275 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:58,837 INFO L231 Difference]: Finished difference. Result has 180 places, 127 transitions, 953 flow [2024-06-04 15:26:58,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=953, PETRI_PLACES=180, PETRI_TRANSITIONS=127} [2024-06-04 15:26:58,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-04 15:26:58,838 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 127 transitions, 953 flow [2024-06-04 15:26:58,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:58,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:58,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:58,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:26:58,838 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)] === [2024-06-04 15:26:58,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1305654857, now seen corresponding path program 25 times [2024-06-04 15:26:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:58,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951284537] [2024-06-04 15:26:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:58,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:59,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951284537] [2024-06-04 15:26:59,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951284537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:59,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:59,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:59,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643309271] [2024-06-04 15:26:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:59,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:59,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:59,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:00,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:00,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 127 transitions, 953 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:00,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:00,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:00,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:00,388 INFO L124 PetriNetUnfolderBase]: 427/828 cut-off events. [2024-06-04 15:27:00,388 INFO L125 PetriNetUnfolderBase]: For 110897/110897 co-relation queries the response was YES. [2024-06-04 15:27:00,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5726 conditions, 828 events. 427/828 cut-off events. For 110897/110897 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4210 event pairs, 120 based on Foata normal form. 16/842 useless extension candidates. Maximal degree in co-relation 5643. Up to 610 conditions per place. [2024-06-04 15:27:00,393 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 32 changer transitions 18/150 dead transitions. [2024-06-04 15:27:00,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 150 transitions, 1335 flow [2024-06-04 15:27:00,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:27:00,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:27:00,394 INFO L175 Difference]: Start difference. First operand has 180 places, 127 transitions, 953 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:27:00,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 150 transitions, 1335 flow [2024-06-04 15:27:00,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 150 transitions, 1241 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:27:00,491 INFO L231 Difference]: Finished difference. Result has 176 places, 121 transitions, 895 flow [2024-06-04 15:27:00,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=895, PETRI_PLACES=176, PETRI_TRANSITIONS=121} [2024-06-04 15:27:00,491 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-04 15:27:00,491 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 121 transitions, 895 flow [2024-06-04 15:27:00,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:00,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:00,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:00,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:27:00,492 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)] === [2024-06-04 15:27:00,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1026321625, now seen corresponding path program 2 times [2024-06-04 15:27:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:00,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10629509] [2024-06-04 15:27:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:00,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:01,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10629509] [2024-06-04 15:27:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10629509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013518836] [2024-06-04 15:27:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:01,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:01,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:01,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 121 transitions, 895 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:01,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:01,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:01,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:01,988 INFO L124 PetriNetUnfolderBase]: 379/732 cut-off events. [2024-06-04 15:27:01,988 INFO L125 PetriNetUnfolderBase]: For 79768/79768 co-relation queries the response was YES. [2024-06-04 15:27:01,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 732 events. 379/732 cut-off events. For 79768/79768 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3561 event pairs, 105 based on Foata normal form. 2/732 useless extension candidates. Maximal degree in co-relation 5119. Up to 599 conditions per place. [2024-06-04 15:27:01,993 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 35 changer transitions 0/136 dead transitions. [2024-06-04 15:27:01,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 136 transitions, 1201 flow [2024-06-04 15:27:01,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:27:01,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:27:01,994 INFO L175 Difference]: Start difference. First operand has 176 places, 121 transitions, 895 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:27:01,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 136 transitions, 1201 flow [2024-06-04 15:27:02,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 136 transitions, 1123 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-04 15:27:02,079 INFO L231 Difference]: Finished difference. Result has 169 places, 122 transitions, 901 flow [2024-06-04 15:27:02,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=901, PETRI_PLACES=169, PETRI_TRANSITIONS=122} [2024-06-04 15:27:02,079 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-04 15:27:02,079 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 122 transitions, 901 flow [2024-06-04 15:27:02,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:02,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:02,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:02,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:27:02,080 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)] === [2024-06-04 15:27:02,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:02,080 INFO L85 PathProgramCache]: Analyzing trace with hash -329909761, now seen corresponding path program 3 times [2024-06-04 15:27:02,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:02,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314248051] [2024-06-04 15:27:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:02,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:02,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314248051] [2024-06-04 15:27:02,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314248051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:02,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:02,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:02,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118225991] [2024-06-04 15:27:02,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:02,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:02,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:02,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:03,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:03,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 122 transitions, 901 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:03,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:03,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:03,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:03,254 INFO L124 PetriNetUnfolderBase]: 383/740 cut-off events. [2024-06-04 15:27:03,254 INFO L125 PetriNetUnfolderBase]: For 77155/77155 co-relation queries the response was YES. [2024-06-04 15:27:03,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5180 conditions, 740 events. 383/740 cut-off events. For 77155/77155 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3611 event pairs, 103 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 5101. Up to 583 conditions per place. [2024-06-04 15:27:03,258 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 36 changer transitions 0/137 dead transitions. [2024-06-04 15:27:03,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 137 transitions, 1209 flow [2024-06-04 15:27:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 15:27:03,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 15:27:03,259 INFO L175 Difference]: Start difference. First operand has 169 places, 122 transitions, 901 flow. Second operand 10 states and 117 transitions. [2024-06-04 15:27:03,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 137 transitions, 1209 flow [2024-06-04 15:27:03,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 137 transitions, 1137 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:03,344 INFO L231 Difference]: Finished difference. Result has 171 places, 123 transitions, 916 flow [2024-06-04 15:27:03,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=916, PETRI_PLACES=171, PETRI_TRANSITIONS=123} [2024-06-04 15:27:03,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-04 15:27:03,344 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 123 transitions, 916 flow [2024-06-04 15:27:03,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:03,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:03,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:03,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:27:03,344 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)] === [2024-06-04 15:27:03,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:03,345 INFO L85 PathProgramCache]: Analyzing trace with hash -357504113, now seen corresponding path program 26 times [2024-06-04 15:27:03,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:03,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089985166] [2024-06-04 15:27:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:03,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:04,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:04,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089985166] [2024-06-04 15:27:04,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089985166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:04,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:04,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:04,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260696124] [2024-06-04 15:27:04,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:04,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:04,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:04,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:04,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:04,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 123 transitions, 916 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:04,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:04,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:04,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:04,753 INFO L124 PetriNetUnfolderBase]: 370/717 cut-off events. [2024-06-04 15:27:04,754 INFO L125 PetriNetUnfolderBase]: For 76231/76231 co-relation queries the response was YES. [2024-06-04 15:27:04,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 717 events. 370/717 cut-off events. For 76231/76231 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3466 event pairs, 90 based on Foata normal form. 10/725 useless extension candidates. Maximal degree in co-relation 4499. Up to 540 conditions per place. [2024-06-04 15:27:04,757 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 33 changer transitions 11/143 dead transitions. [2024-06-04 15:27:04,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 143 transitions, 1258 flow [2024-06-04 15:27:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:27:04,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:27:04,758 INFO L175 Difference]: Start difference. First operand has 171 places, 123 transitions, 916 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:27:04,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 143 transitions, 1258 flow [2024-06-04 15:27:04,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 143 transitions, 1183 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:04,838 INFO L231 Difference]: Finished difference. Result has 174 places, 120 transitions, 884 flow [2024-06-04 15:27:04,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=884, PETRI_PLACES=174, PETRI_TRANSITIONS=120} [2024-06-04 15:27:04,839 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-04 15:27:04,839 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 120 transitions, 884 flow [2024-06-04 15:27:04,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:04,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:04,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:27:04,839 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)] === [2024-06-04 15:27:04,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1561115317, now seen corresponding path program 27 times [2024-06-04 15:27:04,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:04,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936019964] [2024-06-04 15:27:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:05,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:05,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936019964] [2024-06-04 15:27:05,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936019964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:05,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:05,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:05,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460108134] [2024-06-04 15:27:05,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:05,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:05,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:05,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:05,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:05,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:05,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 120 transitions, 884 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:05,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:05,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:05,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:06,067 INFO L124 PetriNetUnfolderBase]: 378/741 cut-off events. [2024-06-04 15:27:06,067 INFO L125 PetriNetUnfolderBase]: For 89643/89643 co-relation queries the response was YES. [2024-06-04 15:27:06,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 741 events. 378/741 cut-off events. For 89643/89643 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3667 event pairs, 90 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 5021. Up to 408 conditions per place. [2024-06-04 15:27:06,072 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 58 changer transitions 10/145 dead transitions. [2024-06-04 15:27:06,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 145 transitions, 1366 flow [2024-06-04 15:27:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:27:06,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:27:06,073 INFO L175 Difference]: Start difference. First operand has 174 places, 120 transitions, 884 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:27:06,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 145 transitions, 1366 flow [2024-06-04 15:27:06,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 145 transitions, 1292 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:06,180 INFO L231 Difference]: Finished difference. Result has 172 places, 117 transitions, 916 flow [2024-06-04 15:27:06,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=916, PETRI_PLACES=172, PETRI_TRANSITIONS=117} [2024-06-04 15:27:06,180 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-04 15:27:06,180 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 117 transitions, 916 flow [2024-06-04 15:27:06,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:06,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:06,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:06,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:27:06,181 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)] === [2024-06-04 15:27:06,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1422437437, now seen corresponding path program 28 times [2024-06-04 15:27:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441973023] [2024-06-04 15:27:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:06,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:07,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441973023] [2024-06-04 15:27:07,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441973023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:07,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:07,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106481772] [2024-06-04 15:27:07,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:07,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:07,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:07,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:07,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 117 transitions, 916 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:07,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:07,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:07,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:07,554 INFO L124 PetriNetUnfolderBase]: 379/744 cut-off events. [2024-06-04 15:27:07,554 INFO L125 PetriNetUnfolderBase]: For 90251/90251 co-relation queries the response was YES. [2024-06-04 15:27:07,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5171 conditions, 744 events. 379/744 cut-off events. For 90251/90251 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3699 event pairs, 94 based on Foata normal form. 10/752 useless extension candidates. Maximal degree in co-relation 5091. Up to 532 conditions per place. [2024-06-04 15:27:07,558 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 40 changer transitions 13/141 dead transitions. [2024-06-04 15:27:07,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 141 transitions, 1282 flow [2024-06-04 15:27:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:27:07,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:27:07,559 INFO L175 Difference]: Start difference. First operand has 172 places, 117 transitions, 916 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:27:07,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 141 transitions, 1282 flow [2024-06-04 15:27:07,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 141 transitions, 1157 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:07,641 INFO L231 Difference]: Finished difference. Result has 170 places, 116 transitions, 875 flow [2024-06-04 15:27:07,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=875, PETRI_PLACES=170, PETRI_TRANSITIONS=116} [2024-06-04 15:27:07,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-04 15:27:07,641 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 116 transitions, 875 flow [2024-06-04 15:27:07,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:07,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:07,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:07,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:27:07,641 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)] === [2024-06-04 15:27:07,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1395269521, now seen corresponding path program 29 times [2024-06-04 15:27:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:07,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385922935] [2024-06-04 15:27:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:07,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:08,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:08,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385922935] [2024-06-04 15:27:08,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385922935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:08,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:08,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:08,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363435502] [2024-06-04 15:27:08,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:08,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:08,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:08,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:08,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:08,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:08,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 116 transitions, 875 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:08,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:08,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:08,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:08,973 INFO L124 PetriNetUnfolderBase]: 366/721 cut-off events. [2024-06-04 15:27:08,973 INFO L125 PetriNetUnfolderBase]: For 80947/80947 co-relation queries the response was YES. [2024-06-04 15:27:08,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4942 conditions, 721 events. 366/721 cut-off events. For 80947/80947 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3542 event pairs, 92 based on Foata normal form. 8/727 useless extension candidates. Maximal degree in co-relation 4863. Up to 471 conditions per place. [2024-06-04 15:27:08,978 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 33 changer transitions 11/141 dead transitions. [2024-06-04 15:27:08,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 141 transitions, 1349 flow [2024-06-04 15:27:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:27:08,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:27:08,979 INFO L175 Difference]: Start difference. First operand has 170 places, 116 transitions, 875 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:27:08,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 141 transitions, 1349 flow [2024-06-04 15:27:09,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 141 transitions, 1263 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:09,063 INFO L231 Difference]: Finished difference. Result has 169 places, 112 transitions, 834 flow [2024-06-04 15:27:09,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=834, PETRI_PLACES=169, PETRI_TRANSITIONS=112} [2024-06-04 15:27:09,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-04 15:27:09,064 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 112 transitions, 834 flow [2024-06-04 15:27:09,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:09,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:09,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:09,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:27:09,064 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)] === [2024-06-04 15:27:09,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1533653521, now seen corresponding path program 30 times [2024-06-04 15:27:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:09,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888652783] [2024-06-04 15:27:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:09,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:09,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888652783] [2024-06-04 15:27:09,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888652783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:09,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:09,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:09,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393445483] [2024-06-04 15:27:09,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:09,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:09,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:09,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:10,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:10,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 112 transitions, 834 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:10,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:10,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:10,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:10,372 INFO L124 PetriNetUnfolderBase]: 333/654 cut-off events. [2024-06-04 15:27:10,372 INFO L125 PetriNetUnfolderBase]: For 68058/68058 co-relation queries the response was YES. [2024-06-04 15:27:10,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4267 conditions, 654 events. 333/654 cut-off events. For 68058/68058 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3101 event pairs, 64 based on Foata normal form. 8/660 useless extension candidates. Maximal degree in co-relation 4189. Up to 390 conditions per place. [2024-06-04 15:27:10,375 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 53 changer transitions 14/132 dead transitions. [2024-06-04 15:27:10,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 132 transitions, 1148 flow [2024-06-04 15:27:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:27:10,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:27:10,376 INFO L175 Difference]: Start difference. First operand has 169 places, 112 transitions, 834 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:27:10,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 132 transitions, 1148 flow [2024-06-04 15:27:10,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 132 transitions, 1074 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:27:10,444 INFO L231 Difference]: Finished difference. Result has 164 places, 107 transitions, 839 flow [2024-06-04 15:27:10,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=839, PETRI_PLACES=164, PETRI_TRANSITIONS=107} [2024-06-04 15:27:10,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-04 15:27:10,444 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 107 transitions, 839 flow [2024-06-04 15:27:10,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:10,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:10,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:10,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:27:10,445 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)] === [2024-06-04 15:27:10,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:10,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1389757411, now seen corresponding path program 31 times [2024-06-04 15:27:10,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:10,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031370341] [2024-06-04 15:27:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:10,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:11,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031370341] [2024-06-04 15:27:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031370341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:11,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:11,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:11,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688463190] [2024-06-04 15:27:11,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:11,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:11,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:11,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:11,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 107 transitions, 839 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:11,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:11,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:11,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:11,828 INFO L124 PetriNetUnfolderBase]: 299/584 cut-off events. [2024-06-04 15:27:11,829 INFO L125 PetriNetUnfolderBase]: For 51417/51417 co-relation queries the response was YES. [2024-06-04 15:27:11,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 584 events. 299/584 cut-off events. For 51417/51417 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2644 event pairs, 67 based on Foata normal form. 10/592 useless extension candidates. Maximal degree in co-relation 3421. Up to 406 conditions per place. [2024-06-04 15:27:11,831 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 79 selfloop transitions, 26 changer transitions 19/126 dead transitions. [2024-06-04 15:27:11,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 126 transitions, 1145 flow [2024-06-04 15:27:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:27:11,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:27:11,833 INFO L175 Difference]: Start difference. First operand has 164 places, 107 transitions, 839 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:27:11,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 126 transitions, 1145 flow [2024-06-04 15:27:11,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 126 transitions, 1033 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:11,902 INFO L231 Difference]: Finished difference. Result has 157 places, 99 transitions, 732 flow [2024-06-04 15:27:11,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=732, PETRI_PLACES=157, PETRI_TRANSITIONS=99} [2024-06-04 15:27:11,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-04 15:27:11,902 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 99 transitions, 732 flow [2024-06-04 15:27:11,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:11,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:11,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:11,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:27:11,903 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)] === [2024-06-04 15:27:11,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1030904023, now seen corresponding path program 32 times [2024-06-04 15:27:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297015965] [2024-06-04 15:27:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:11,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:12,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:12,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297015965] [2024-06-04 15:27:12,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297015965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:12,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:12,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:12,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42250654] [2024-06-04 15:27:12,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:12,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:12,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:12,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:12,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:12,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:12,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 99 transitions, 732 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:12,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:12,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:12,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:13,281 INFO L124 PetriNetUnfolderBase]: 285/558 cut-off events. [2024-06-04 15:27:13,281 INFO L125 PetriNetUnfolderBase]: For 47764/47764 co-relation queries the response was YES. [2024-06-04 15:27:13,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3261 conditions, 558 events. 285/558 cut-off events. For 47764/47764 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2490 event pairs, 67 based on Foata normal form. 10/566 useless extension candidates. Maximal degree in co-relation 3187. Up to 442 conditions per place. [2024-06-04 15:27:13,284 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 22 changer transitions 11/118 dead transitions. [2024-06-04 15:27:13,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 118 transitions, 1022 flow [2024-06-04 15:27:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:27:13,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:27:13,285 INFO L175 Difference]: Start difference. First operand has 157 places, 99 transitions, 732 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:27:13,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 118 transitions, 1022 flow [2024-06-04 15:27:13,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 118 transitions, 958 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:27:13,327 INFO L231 Difference]: Finished difference. Result has 145 places, 96 transitions, 692 flow [2024-06-04 15:27:13,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=692, PETRI_PLACES=145, PETRI_TRANSITIONS=96} [2024-06-04 15:27:13,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-04 15:27:13,328 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 96 transitions, 692 flow [2024-06-04 15:27:13,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:13,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:13,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:13,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:27:13,328 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)] === [2024-06-04 15:27:13,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:13,329 INFO L85 PathProgramCache]: Analyzing trace with hash 653159961, now seen corresponding path program 4 times [2024-06-04 15:27:13,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:13,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034868148] [2024-06-04 15:27:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:13,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:14,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:14,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034868148] [2024-06-04 15:27:14,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034868148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:14,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:14,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:14,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056685251] [2024-06-04 15:27:14,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:14,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:14,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:14,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:14,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 96 transitions, 692 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:14,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:14,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:14,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:14,548 INFO L124 PetriNetUnfolderBase]: 265/518 cut-off events. [2024-06-04 15:27:14,548 INFO L125 PetriNetUnfolderBase]: For 30072/30072 co-relation queries the response was YES. [2024-06-04 15:27:14,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2986 conditions, 518 events. 265/518 cut-off events. For 30072/30072 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2249 event pairs, 63 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 2917. Up to 468 conditions per place. [2024-06-04 15:27:14,551 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 19 changer transitions 0/111 dead transitions. [2024-06-04 15:27:14,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 111 transitions, 950 flow [2024-06-04 15:27:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:27:14,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:27:14,552 INFO L175 Difference]: Start difference. First operand has 145 places, 96 transitions, 692 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:27:14,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 111 transitions, 950 flow [2024-06-04 15:27:14,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 111 transitions, 902 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:14,597 INFO L231 Difference]: Finished difference. Result has 142 places, 97 transitions, 698 flow [2024-06-04 15:27:14,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=698, PETRI_PLACES=142, PETRI_TRANSITIONS=97} [2024-06-04 15:27:14,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-04 15:27:14,597 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 97 transitions, 698 flow [2024-06-04 15:27:14,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:14,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:14,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:14,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:27:14,597 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)] === [2024-06-04 15:27:14,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1230205813, now seen corresponding path program 33 times [2024-06-04 15:27:14,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:14,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586178984] [2024-06-04 15:27:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:14,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:15,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:15,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586178984] [2024-06-04 15:27:15,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586178984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:15,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:15,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:15,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942074833] [2024-06-04 15:27:15,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:15,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:15,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:15,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:15,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:15,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:15,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 97 transitions, 698 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:15,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:15,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:15,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:15,860 INFO L124 PetriNetUnfolderBase]: 281/554 cut-off events. [2024-06-04 15:27:15,860 INFO L125 PetriNetUnfolderBase]: For 37678/37678 co-relation queries the response was YES. [2024-06-04 15:27:15,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3077 conditions, 554 events. 281/554 cut-off events. For 37678/37678 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2501 event pairs, 57 based on Foata normal form. 10/562 useless extension candidates. Maximal degree in co-relation 3009. Up to 372 conditions per place. [2024-06-04 15:27:15,863 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 41 changer transitions 11/118 dead transitions. [2024-06-04 15:27:15,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 118 transitions, 992 flow [2024-06-04 15:27:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:27:15,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:27:15,863 INFO L175 Difference]: Start difference. First operand has 142 places, 97 transitions, 698 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:27:15,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 118 transitions, 992 flow [2024-06-04 15:27:15,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 118 transitions, 948 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:15,904 INFO L231 Difference]: Finished difference. Result has 145 places, 94 transitions, 718 flow [2024-06-04 15:27:15,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=718, PETRI_PLACES=145, PETRI_TRANSITIONS=94} [2024-06-04 15:27:15,905 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-04 15:27:15,905 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 94 transitions, 718 flow [2024-06-04 15:27:15,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:15,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:15,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:15,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:27:15,905 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)] === [2024-06-04 15:27:15,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:15,905 INFO L85 PathProgramCache]: Analyzing trace with hash -117325957, now seen corresponding path program 34 times [2024-06-04 15:27:15,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:15,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959640372] [2024-06-04 15:27:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:15,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:16,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:16,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959640372] [2024-06-04 15:27:16,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959640372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:16,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:16,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:16,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265087181] [2024-06-04 15:27:16,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:16,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:16,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:17,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:17,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 94 transitions, 718 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:17,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:17,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:17,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:17,370 INFO L124 PetriNetUnfolderBase]: 287/572 cut-off events. [2024-06-04 15:27:17,370 INFO L125 PetriNetUnfolderBase]: For 46054/46054 co-relation queries the response was YES. [2024-06-04 15:27:17,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 572 events. 287/572 cut-off events. For 46054/46054 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2630 event pairs, 73 based on Foata normal form. 16/586 useless extension candidates. Maximal degree in co-relation 3133. Up to 448 conditions per place. [2024-06-04 15:27:17,373 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 15 changer transitions 16/116 dead transitions. [2024-06-04 15:27:17,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 116 transitions, 1028 flow [2024-06-04 15:27:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:27:17,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:27:17,374 INFO L175 Difference]: Start difference. First operand has 145 places, 94 transitions, 718 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:27:17,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 116 transitions, 1028 flow [2024-06-04 15:27:17,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 116 transitions, 938 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:17,423 INFO L231 Difference]: Finished difference. Result has 144 places, 90 transitions, 642 flow [2024-06-04 15:27:17,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=642, PETRI_PLACES=144, PETRI_TRANSITIONS=90} [2024-06-04 15:27:17,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-04 15:27:17,424 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 90 transitions, 642 flow [2024-06-04 15:27:17,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:17,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:17,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:17,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:27:17,424 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)] === [2024-06-04 15:27:17,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1023275667, now seen corresponding path program 5 times [2024-06-04 15:27:17,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:17,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319987804] [2024-06-04 15:27:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:17,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:18,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:18,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319987804] [2024-06-04 15:27:18,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319987804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:18,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:18,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462754023] [2024-06-04 15:27:18,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:18,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:18,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:18,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:18,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 90 transitions, 642 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:18,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:18,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:18,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:18,574 INFO L124 PetriNetUnfolderBase]: 249/494 cut-off events. [2024-06-04 15:27:18,574 INFO L125 PetriNetUnfolderBase]: For 28850/28850 co-relation queries the response was YES. [2024-06-04 15:27:18,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 494 events. 249/494 cut-off events. For 28850/28850 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2149 event pairs, 63 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2793. Up to 421 conditions per place. [2024-06-04 15:27:18,577 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 82 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-04 15:27:18,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 105 transitions, 890 flow [2024-06-04 15:27:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 15:27:18,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 15:27:18,577 INFO L175 Difference]: Start difference. First operand has 144 places, 90 transitions, 642 flow. Second operand 10 states and 113 transitions. [2024-06-04 15:27:18,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 105 transitions, 890 flow [2024-06-04 15:27:18,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 105 transitions, 848 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:18,621 INFO L231 Difference]: Finished difference. Result has 139 places, 91 transitions, 660 flow [2024-06-04 15:27:18,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=660, PETRI_PLACES=139, PETRI_TRANSITIONS=91} [2024-06-04 15:27:18,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-04 15:27:18,621 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 91 transitions, 660 flow [2024-06-04 15:27:18,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:18,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:18,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:18,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:27:18,622 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)] === [2024-06-04 15:27:18,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1222429879, now seen corresponding path program 6 times [2024-06-04 15:27:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:18,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210978508] [2024-06-04 15:27:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:19,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:19,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210978508] [2024-06-04 15:27:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210978508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:19,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:19,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312960716] [2024-06-04 15:27:19,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:19,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:19,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:19,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:19,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:19,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:19,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 91 transitions, 660 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:19,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:19,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:19,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:19,931 INFO L124 PetriNetUnfolderBase]: 253/502 cut-off events. [2024-06-04 15:27:19,931 INFO L125 PetriNetUnfolderBase]: For 27668/27668 co-relation queries the response was YES. [2024-06-04 15:27:19,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 502 events. 253/502 cut-off events. For 27668/27668 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2196 event pairs, 57 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2813. Up to 456 conditions per place. [2024-06-04 15:27:19,934 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-04 15:27:19,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 106 transitions, 910 flow [2024-06-04 15:27:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 15:27:19,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:27:19,935 INFO L175 Difference]: Start difference. First operand has 139 places, 91 transitions, 660 flow. Second operand 10 states and 110 transitions. [2024-06-04 15:27:19,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 106 transitions, 910 flow [2024-06-04 15:27:19,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 106 transitions, 862 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:19,972 INFO L231 Difference]: Finished difference. Result has 141 places, 92 transitions, 662 flow [2024-06-04 15:27:19,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=131, 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=10, PETRI_FLOW=662, PETRI_PLACES=141, PETRI_TRANSITIONS=92} [2024-06-04 15:27:19,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-04 15:27:19,973 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 92 transitions, 662 flow [2024-06-04 15:27:19,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:19,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:19,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:19,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:27:19,973 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)] === [2024-06-04 15:27:19,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1222439179, now seen corresponding path program 7 times [2024-06-04 15:27:19,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:19,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972514494] [2024-06-04 15:27:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:19,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:20,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972514494] [2024-06-04 15:27:20,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972514494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:20,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:20,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690326679] [2024-06-04 15:27:20,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:20,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:20,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:21,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:21,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 92 transitions, 662 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:21,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:21,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:21,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:21,273 INFO L124 PetriNetUnfolderBase]: 257/510 cut-off events. [2024-06-04 15:27:21,273 INFO L125 PetriNetUnfolderBase]: For 28841/28841 co-relation queries the response was YES. [2024-06-04 15:27:21,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 510 events. 257/510 cut-off events. For 28841/28841 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2227 event pairs, 63 based on Foata normal form. 2/510 useless extension candidates. Maximal degree in co-relation 2867. Up to 450 conditions per place. [2024-06-04 15:27:21,276 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-04 15:27:21,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 107 transitions, 916 flow [2024-06-04 15:27:21,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:27:21,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:27:21,276 INFO L175 Difference]: Start difference. First operand has 141 places, 92 transitions, 662 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:27:21,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 107 transitions, 916 flow [2024-06-04 15:27:21,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 107 transitions, 876 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:21,318 INFO L231 Difference]: Finished difference. Result has 143 places, 93 transitions, 676 flow [2024-06-04 15:27:21,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=676, PETRI_PLACES=143, PETRI_TRANSITIONS=93} [2024-06-04 15:27:21,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-04 15:27:21,318 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 93 transitions, 676 flow [2024-06-04 15:27:21,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:21,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:21,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:21,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:27:21,319 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)] === [2024-06-04 15:27:21,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:21,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1230211393, now seen corresponding path program 35 times [2024-06-04 15:27:21,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:21,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955686833] [2024-06-04 15:27:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:21,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:22,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:22,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955686833] [2024-06-04 15:27:22,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955686833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:22,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:22,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:22,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355919184] [2024-06-04 15:27:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:22,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:22,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:22,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:22,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:22,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 93 transitions, 676 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:22,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:22,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:22,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:22,743 INFO L124 PetriNetUnfolderBase]: 298/597 cut-off events. [2024-06-04 15:27:22,743 INFO L125 PetriNetUnfolderBase]: For 48323/48323 co-relation queries the response was YES. [2024-06-04 15:27:22,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3688 conditions, 597 events. 298/597 cut-off events. For 48323/48323 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2796 event pairs, 80 based on Foata normal form. 8/603 useless extension candidates. Maximal degree in co-relation 3619. Up to 390 conditions per place. [2024-06-04 15:27:22,746 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 30 changer transitions 10/119 dead transitions. [2024-06-04 15:27:22,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 119 transitions, 1090 flow [2024-06-04 15:27:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:27:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:27:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:27:22,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:27:22,747 INFO L175 Difference]: Start difference. First operand has 143 places, 93 transitions, 676 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:27:22,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 119 transitions, 1090 flow [2024-06-04 15:27:22,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 119 transitions, 1046 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:22,793 INFO L231 Difference]: Finished difference. Result has 147 places, 88 transitions, 662 flow [2024-06-04 15:27:22,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=662, PETRI_PLACES=147, PETRI_TRANSITIONS=88} [2024-06-04 15:27:22,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-04 15:27:22,793 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 88 transitions, 662 flow [2024-06-04 15:27:22,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:22,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:22,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:22,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:27:22,794 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)] === [2024-06-04 15:27:22,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1230355543, now seen corresponding path program 36 times [2024-06-04 15:27:22,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:22,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9714188] [2024-06-04 15:27:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:22,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:23,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:23,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9714188] [2024-06-04 15:27:23,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9714188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:23,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:23,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:23,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90708458] [2024-06-04 15:27:23,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:23,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:23,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:23,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:23,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:23,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 88 transitions, 662 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:23,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:23,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:23,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:24,187 INFO L124 PetriNetUnfolderBase]: 336/679 cut-off events. [2024-06-04 15:27:24,187 INFO L125 PetriNetUnfolderBase]: For 71420/71420 co-relation queries the response was YES. [2024-06-04 15:27:24,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4851 conditions, 679 events. 336/679 cut-off events. For 71420/71420 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3355 event pairs, 113 based on Foata normal form. 8/685 useless extension candidates. Maximal degree in co-relation 4781. Up to 338 conditions per place. [2024-06-04 15:27:24,190 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 27 changer transitions 11/114 dead transitions. [2024-06-04 15:27:24,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 114 transitions, 1082 flow [2024-06-04 15:27:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:24,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:27:24,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:27:24,191 INFO L175 Difference]: Start difference. First operand has 147 places, 88 transitions, 662 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:27:24,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 114 transitions, 1082 flow [2024-06-04 15:27:24,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 114 transitions, 1008 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 15:27:24,243 INFO L231 Difference]: Finished difference. Result has 141 places, 84 transitions, 625 flow [2024-06-04 15:27:24,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=625, PETRI_PLACES=141, PETRI_TRANSITIONS=84} [2024-06-04 15:27:24,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-04 15:27:24,244 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 84 transitions, 625 flow [2024-06-04 15:27:24,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:24,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:24,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:24,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:27:24,244 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)] === [2024-06-04 15:27:24,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1030909603, now seen corresponding path program 37 times [2024-06-04 15:27:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112072865] [2024-06-04 15:27:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:25,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:25,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112072865] [2024-06-04 15:27:25,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112072865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:25,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:25,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811903685] [2024-06-04 15:27:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:25,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:25,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:25,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 84 transitions, 625 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:25,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:25,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:25,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:25,584 INFO L124 PetriNetUnfolderBase]: 325/658 cut-off events. [2024-06-04 15:27:25,584 INFO L125 PetriNetUnfolderBase]: For 63034/63034 co-relation queries the response was YES. [2024-06-04 15:27:25,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 658 events. 325/658 cut-off events. For 63034/63034 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3235 event pairs, 121 based on Foata normal form. 8/664 useless extension candidates. Maximal degree in co-relation 4553. Up to 558 conditions per place. [2024-06-04 15:27:25,587 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 71 selfloop transitions, 16 changer transitions 13/102 dead transitions. [2024-06-04 15:27:25,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 102 transitions, 875 flow [2024-06-04 15:27:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:27:25,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:27:25,588 INFO L175 Difference]: Start difference. First operand has 141 places, 84 transitions, 625 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:27:25,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 102 transitions, 875 flow [2024-06-04 15:27:25,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 102 transitions, 822 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:27:25,632 INFO L231 Difference]: Finished difference. Result has 136 places, 80 transitions, 577 flow [2024-06-04 15:27:25,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=577, PETRI_PLACES=136, PETRI_TRANSITIONS=80} [2024-06-04 15:27:25,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-04 15:27:25,633 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 80 transitions, 577 flow [2024-06-04 15:27:25,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:25,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:25,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:25,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:27:25,633 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)] === [2024-06-04 15:27:25,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash 652944635, now seen corresponding path program 38 times [2024-06-04 15:27:25,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:25,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645655378] [2024-06-04 15:27:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:25,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:26,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645655378] [2024-06-04 15:27:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645655378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:26,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:26,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130495483] [2024-06-04 15:27:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:26,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:26,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:26,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:26,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:26,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 80 transitions, 577 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:26,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:26,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:26,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:27,072 INFO L124 PetriNetUnfolderBase]: 317/642 cut-off events. [2024-06-04 15:27:27,072 INFO L125 PetriNetUnfolderBase]: For 55032/55032 co-relation queries the response was YES. [2024-06-04 15:27:27,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4391 conditions, 642 events. 317/642 cut-off events. For 55032/55032 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3124 event pairs, 113 based on Foata normal form. 8/648 useless extension candidates. Maximal degree in co-relation 4327. Up to 430 conditions per place. [2024-06-04 15:27:27,075 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 19 changer transitions 7/105 dead transitions. [2024-06-04 15:27:27,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 105 transitions, 965 flow [2024-06-04 15:27:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:27:27,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:27:27,076 INFO L175 Difference]: Start difference. First operand has 136 places, 80 transitions, 577 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:27:27,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 105 transitions, 965 flow [2024-06-04 15:27:27,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 105 transitions, 917 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:27,109 INFO L231 Difference]: Finished difference. Result has 130 places, 78 transitions, 561 flow [2024-06-04 15:27:27,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=561, PETRI_PLACES=130, PETRI_TRANSITIONS=78} [2024-06-04 15:27:27,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-04 15:27:27,110 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 78 transitions, 561 flow [2024-06-04 15:27:27,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:27,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:27,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:27,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 15:27:27,110 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)] === [2024-06-04 15:27:27,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1587028115, now seen corresponding path program 39 times [2024-06-04 15:27:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:27,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486911312] [2024-06-04 15:27:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:28,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:28,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486911312] [2024-06-04 15:27:28,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486911312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:28,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:28,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:28,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741004815] [2024-06-04 15:27:28,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:28,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:28,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:28,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:28,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 78 transitions, 561 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:28,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:28,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:28,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:28,487 INFO L124 PetriNetUnfolderBase]: 286/581 cut-off events. [2024-06-04 15:27:28,488 INFO L125 PetriNetUnfolderBase]: For 41326/41326 co-relation queries the response was YES. [2024-06-04 15:27:28,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 581 events. 286/581 cut-off events. For 41326/41326 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2722 event pairs, 104 based on Foata normal form. 10/589 useless extension candidates. Maximal degree in co-relation 3599. Up to 474 conditions per place. [2024-06-04 15:27:28,490 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 15 changer transitions 16/97 dead transitions. [2024-06-04 15:27:28,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 97 transitions, 809 flow [2024-06-04 15:27:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:27:28,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:27:28,491 INFO L175 Difference]: Start difference. First operand has 130 places, 78 transitions, 561 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:27:28,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 97 transitions, 809 flow [2024-06-04 15:27:28,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 97 transitions, 772 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:28,525 INFO L231 Difference]: Finished difference. Result has 129 places, 72 transitions, 512 flow [2024-06-04 15:27:28,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=512, PETRI_PLACES=129, PETRI_TRANSITIONS=72} [2024-06-04 15:27:28,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-04 15:27:28,526 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 72 transitions, 512 flow [2024-06-04 15:27:28,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:28,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:28,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:28,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 15:27:28,526 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)] === [2024-06-04 15:27:28,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash 652950215, now seen corresponding path program 40 times [2024-06-04 15:27:28,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:28,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491291566] [2024-06-04 15:27:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:28,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:29,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491291566] [2024-06-04 15:27:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491291566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:29,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:29,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:29,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589312468] [2024-06-04 15:27:29,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:29,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:29,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:29,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:29,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:29,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 72 transitions, 512 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:29,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:29,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:29,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:29,756 INFO L124 PetriNetUnfolderBase]: 275/560 cut-off events. [2024-06-04 15:27:29,757 INFO L125 PetriNetUnfolderBase]: For 39327/39327 co-relation queries the response was YES. [2024-06-04 15:27:29,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 560 events. 275/560 cut-off events. For 39327/39327 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2601 event pairs, 90 based on Foata normal form. 10/568 useless extension candidates. Maximal degree in co-relation 3455. Up to 433 conditions per place. [2024-06-04 15:27:29,759 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 56 selfloop transitions, 22 changer transitions 13/93 dead transitions. [2024-06-04 15:27:29,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 93 transitions, 756 flow [2024-06-04 15:27:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:27:29,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:27:29,760 INFO L175 Difference]: Start difference. First operand has 129 places, 72 transitions, 512 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:27:29,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 93 transitions, 756 flow [2024-06-04 15:27:29,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 93 transitions, 716 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:27:29,784 INFO L231 Difference]: Finished difference. Result has 120 places, 67 transitions, 474 flow [2024-06-04 15:27:29,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=474, PETRI_PLACES=120, PETRI_TRANSITIONS=67} [2024-06-04 15:27:29,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-04 15:27:29,785 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 67 transitions, 474 flow [2024-06-04 15:27:29,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:29,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:29,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:29,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 15:27:29,785 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)] === [2024-06-04 15:27:29,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:29,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1233481069, now seen corresponding path program 8 times [2024-06-04 15:27:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:29,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181801877] [2024-06-04 15:27:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:29,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181801877] [2024-06-04 15:27:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181801877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670368098] [2024-06-04 15:27:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:30,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:30,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:30,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:30,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 67 transitions, 474 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:30,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:30,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:30,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:31,107 INFO L124 PetriNetUnfolderBase]: 253/514 cut-off events. [2024-06-04 15:27:31,107 INFO L125 PetriNetUnfolderBase]: For 26893/26893 co-relation queries the response was YES. [2024-06-04 15:27:31,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3203 conditions, 514 events. 253/514 cut-off events. For 26893/26893 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2311 event pairs, 90 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 3147. Up to 468 conditions per place. [2024-06-04 15:27:31,109 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2024-06-04 15:27:31,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 82 transitions, 680 flow [2024-06-04 15:27:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 15:27:31,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 15:27:31,110 INFO L175 Difference]: Start difference. First operand has 120 places, 67 transitions, 474 flow. Second operand 10 states and 107 transitions. [2024-06-04 15:27:31,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 82 transitions, 680 flow [2024-06-04 15:27:31,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 82 transitions, 614 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:27:31,132 INFO L231 Difference]: Finished difference. Result has 113 places, 68 transitions, 458 flow [2024-06-04 15:27:31,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=458, PETRI_PLACES=113, PETRI_TRANSITIONS=68} [2024-06-04 15:27:31,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-04 15:27:31,132 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 68 transitions, 458 flow [2024-06-04 15:27:31,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:31,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:31,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 15:27:31,133 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)] === [2024-06-04 15:27:31,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:31,133 INFO L85 PathProgramCache]: Analyzing trace with hash 660569271, now seen corresponding path program 9 times [2024-06-04 15:27:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:31,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664353834] [2024-06-04 15:27:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:31,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:32,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:32,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664353834] [2024-06-04 15:27:32,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664353834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:32,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:32,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:32,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199930797] [2024-06-04 15:27:32,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:32,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:32,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:32,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:32,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 68 transitions, 458 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:32,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:32,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:32,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:32,501 INFO L124 PetriNetUnfolderBase]: 250/509 cut-off events. [2024-06-04 15:27:32,501 INFO L125 PetriNetUnfolderBase]: For 24452/24452 co-relation queries the response was YES. [2024-06-04 15:27:32,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 509 events. 250/509 cut-off events. For 24452/24452 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2280 event pairs, 97 based on Foata normal form. 2/509 useless extension candidates. Maximal degree in co-relation 2976. Up to 468 conditions per place. [2024-06-04 15:27:32,503 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 15 changer transitions 0/82 dead transitions. [2024-06-04 15:27:32,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 82 transitions, 664 flow [2024-06-04 15:27:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:27:32,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 15:27:32,504 INFO L175 Difference]: Start difference. First operand has 113 places, 68 transitions, 458 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:27:32,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 82 transitions, 664 flow [2024-06-04 15:27:32,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 82 transitions, 624 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:32,524 INFO L231 Difference]: Finished difference. Result has 115 places, 69 transitions, 472 flow [2024-06-04 15:27:32,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=472, PETRI_PLACES=115, PETRI_TRANSITIONS=69} [2024-06-04 15:27:32,525 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-04 15:27:32,525 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 69 transitions, 472 flow [2024-06-04 15:27:32,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:32,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:32,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:32,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 15:27:32,525 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)] === [2024-06-04 15:27:32,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash 660578571, now seen corresponding path program 10 times [2024-06-04 15:27:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:32,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216257722] [2024-06-04 15:27:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:32,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:33,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:33,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216257722] [2024-06-04 15:27:33,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216257722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:33,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:33,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:33,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010989509] [2024-06-04 15:27:33,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:33,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:33,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:33,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:33,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 69 transitions, 472 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:33,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:33,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:33,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:33,705 INFO L124 PetriNetUnfolderBase]: 247/504 cut-off events. [2024-06-04 15:27:33,705 INFO L125 PetriNetUnfolderBase]: For 24587/24587 co-relation queries the response was YES. [2024-06-04 15:27:33,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2958 conditions, 504 events. 247/504 cut-off events. For 24587/24587 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2263 event pairs, 96 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2904. Up to 449 conditions per place. [2024-06-04 15:27:33,708 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 16 changer transitions 0/82 dead transitions. [2024-06-04 15:27:33,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 82 transitions, 660 flow [2024-06-04 15:27:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 15:27:33,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 15:27:33,708 INFO L175 Difference]: Start difference. First operand has 115 places, 69 transitions, 472 flow. Second operand 10 states and 109 transitions. [2024-06-04 15:27:33,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 82 transitions, 660 flow [2024-06-04 15:27:33,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 82 transitions, 616 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:33,732 INFO L231 Difference]: Finished difference. Result has 117 places, 69 transitions, 464 flow [2024-06-04 15:27:33,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=464, PETRI_PLACES=117, PETRI_TRANSITIONS=69} [2024-06-04 15:27:33,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-04 15:27:33,732 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 69 transitions, 464 flow [2024-06-04 15:27:33,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:33,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:33,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:33,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 15:27:33,733 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)] === [2024-06-04 15:27:33,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash 660301865, now seen corresponding path program 41 times [2024-06-04 15:27:33,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:33,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660851368] [2024-06-04 15:27:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:33,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:34,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660851368] [2024-06-04 15:27:34,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660851368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:34,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:34,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:34,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676294588] [2024-06-04 15:27:34,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:34,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:34,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:34,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:34,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:34,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:34,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 69 transitions, 464 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:34,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:34,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:34,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:35,034 INFO L124 PetriNetUnfolderBase]: 227/468 cut-off events. [2024-06-04 15:27:35,034 INFO L125 PetriNetUnfolderBase]: For 24759/24759 co-relation queries the response was YES. [2024-06-04 15:27:35,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 468 events. 227/468 cut-off events. For 24759/24759 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2057 event pairs, 76 based on Foata normal form. 16/482 useless extension candidates. Maximal degree in co-relation 2248. Up to 353 conditions per place. [2024-06-04 15:27:35,036 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 11 changer transitions 16/88 dead transitions. [2024-06-04 15:27:35,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 88 transitions, 694 flow [2024-06-04 15:27:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 15:27:35,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 15:27:35,037 INFO L175 Difference]: Start difference. First operand has 117 places, 69 transitions, 464 flow. Second operand 11 states and 122 transitions. [2024-06-04 15:27:35,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 88 transitions, 694 flow [2024-06-04 15:27:35,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 88 transitions, 626 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:35,057 INFO L231 Difference]: Finished difference. Result has 119 places, 63 transitions, 376 flow [2024-06-04 15:27:35,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=376, PETRI_PLACES=119, PETRI_TRANSITIONS=63} [2024-06-04 15:27:35,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-04 15:27:35,058 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 63 transitions, 376 flow [2024-06-04 15:27:35,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:35,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:35,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:35,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 15:27:35,058 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)] === [2024-06-04 15:27:35,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:35,058 INFO L85 PathProgramCache]: Analyzing trace with hash 908463243, now seen corresponding path program 42 times [2024-06-04 15:27:35,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:35,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482258583] [2024-06-04 15:27:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:35,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:35,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:35,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482258583] [2024-06-04 15:27:35,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482258583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:35,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:35,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029327898] [2024-06-04 15:27:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:35,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:35,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:35,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:35,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 63 transitions, 376 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:35,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:35,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:35,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:36,225 INFO L124 PetriNetUnfolderBase]: 170/357 cut-off events. [2024-06-04 15:27:36,226 INFO L125 PetriNetUnfolderBase]: For 15078/15078 co-relation queries the response was YES. [2024-06-04 15:27:36,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 357 events. 170/357 cut-off events. For 15078/15078 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1424 event pairs, 45 based on Foata normal form. 10/365 useless extension candidates. Maximal degree in co-relation 1448. Up to 267 conditions per place. [2024-06-04 15:27:36,227 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 55 selfloop transitions, 14 changer transitions 11/82 dead transitions. [2024-06-04 15:27:36,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 82 transitions, 582 flow [2024-06-04 15:27:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:27:36,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:27:36,228 INFO L175 Difference]: Start difference. First operand has 119 places, 63 transitions, 376 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:27:36,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 82 transitions, 582 flow [2024-06-04 15:27:36,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 82 transitions, 539 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-04 15:27:36,237 INFO L231 Difference]: Finished difference. Result has 110 places, 59 transitions, 333 flow [2024-06-04 15:27:36,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=333, PETRI_PLACES=110, PETRI_TRANSITIONS=59} [2024-06-04 15:27:36,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-04 15:27:36,237 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 59 transitions, 333 flow [2024-06-04 15:27:36,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:36,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:36,237 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] [2024-06-04 15:27:36,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 15:27:36,238 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)] === [2024-06-04 15:27:36,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1751200106, now seen corresponding path program 1 times [2024-06-04 15:27:36,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:36,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459547267] [2024-06-04 15:27:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:37,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:37,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459547267] [2024-06-04 15:27:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459547267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:37,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:37,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:27:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862264147] [2024-06-04 15:27:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:37,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:27:37,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:27:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:27:37,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:37,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 59 transitions, 333 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:37,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:37,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:37,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:37,929 INFO L124 PetriNetUnfolderBase]: 137/294 cut-off events. [2024-06-04 15:27:37,929 INFO L125 PetriNetUnfolderBase]: For 6989/6989 co-relation queries the response was YES. [2024-06-04 15:27:37,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 294 events. 137/294 cut-off events. For 6989/6989 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1106 event pairs, 32 based on Foata normal form. 6/298 useless extension candidates. Maximal degree in co-relation 996. Up to 174 conditions per place. [2024-06-04 15:27:37,930 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 46 selfloop transitions, 17 changer transitions 12/77 dead transitions. [2024-06-04 15:27:37,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 77 transitions, 525 flow [2024-06-04 15:27:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:37,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 15:27:37,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 15:27:37,931 INFO L175 Difference]: Start difference. First operand has 110 places, 59 transitions, 333 flow. Second operand 11 states and 118 transitions. [2024-06-04 15:27:37,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 77 transitions, 525 flow [2024-06-04 15:27:37,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 77 transitions, 482 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:27:37,937 INFO L231 Difference]: Finished difference. Result has 104 places, 55 transitions, 309 flow [2024-06-04 15:27:37,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=309, PETRI_PLACES=104, PETRI_TRANSITIONS=55} [2024-06-04 15:27:37,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-04 15:27:37,938 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 55 transitions, 309 flow [2024-06-04 15:27:37,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:37,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:37,938 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] [2024-06-04 15:27:37,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 15:27:37,938 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)] === [2024-06-04 15:27:37,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1810853074, now seen corresponding path program 2 times [2024-06-04 15:27:37,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:37,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461405896] [2024-06-04 15:27:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:37,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:39,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:39,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461405896] [2024-06-04 15:27:39,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461405896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:39,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:39,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:27:39,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746890928] [2024-06-04 15:27:39,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:39,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:27:39,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:39,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:27:39,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:27:39,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:39,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 55 transitions, 309 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:39,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:39,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:39,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:39,609 INFO L124 PetriNetUnfolderBase]: 123/272 cut-off events. [2024-06-04 15:27:39,610 INFO L125 PetriNetUnfolderBase]: For 6586/6586 co-relation queries the response was YES. [2024-06-04 15:27:39,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 272 events. 123/272 cut-off events. For 6586/6586 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1005 event pairs, 30 based on Foata normal form. 6/276 useless extension candidates. Maximal degree in co-relation 906. Up to 146 conditions per place. [2024-06-04 15:27:39,611 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 35 selfloop transitions, 7 changer transitions 29/73 dead transitions. [2024-06-04 15:27:39,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 73 transitions, 491 flow [2024-06-04 15:27:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 15:27:39,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 15:27:39,611 INFO L175 Difference]: Start difference. First operand has 104 places, 55 transitions, 309 flow. Second operand 11 states and 117 transitions. [2024-06-04 15:27:39,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 73 transitions, 491 flow [2024-06-04 15:27:39,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 73 transitions, 451 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:39,616 INFO L231 Difference]: Finished difference. Result has 98 places, 41 transitions, 225 flow [2024-06-04 15:27:39,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=225, PETRI_PLACES=98, PETRI_TRANSITIONS=41} [2024-06-04 15:27:39,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-04 15:27:39,616 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 41 transitions, 225 flow [2024-06-04 15:27:39,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:39,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:39,617 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] [2024-06-04 15:27:39,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 15:27:39,617 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)] === [2024-06-04 15:27:39,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1656773802, now seen corresponding path program 3 times [2024-06-04 15:27:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:39,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063309495] [2024-06-04 15:27:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:39,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:40,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063309495] [2024-06-04 15:27:40,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063309495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:40,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:40,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:27:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977410284] [2024-06-04 15:27:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:40,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:27:40,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:40,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:27:40,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:27:41,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:41,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 41 transitions, 225 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:41,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:41,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:41,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:41,335 INFO L124 PetriNetUnfolderBase]: 97/213 cut-off events. [2024-06-04 15:27:41,335 INFO L125 PetriNetUnfolderBase]: For 5769/5769 co-relation queries the response was YES. [2024-06-04 15:27:41,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 213 events. 97/213 cut-off events. For 5769/5769 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 701 event pairs, 24 based on Foata normal form. 6/218 useless extension candidates. Maximal degree in co-relation 720. Up to 119 conditions per place. [2024-06-04 15:27:41,336 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 32 selfloop transitions, 9 changer transitions 17/60 dead transitions. [2024-06-04 15:27:41,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 60 transitions, 394 flow [2024-06-04 15:27:41,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 15:27:41,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 15:27:41,336 INFO L175 Difference]: Start difference. First operand has 98 places, 41 transitions, 225 flow. Second operand 11 states and 112 transitions. [2024-06-04 15:27:41,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 60 transitions, 394 flow [2024-06-04 15:27:41,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 60 transitions, 356 flow, removed 11 selfloop flow, removed 16 redundant places. [2024-06-04 15:27:41,339 INFO L231 Difference]: Finished difference. Result has 77 places, 39 transitions, 218 flow [2024-06-04 15:27:41,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=218, PETRI_PLACES=77, PETRI_TRANSITIONS=39} [2024-06-04 15:27:41,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-04 15:27:41,339 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 39 transitions, 218 flow [2024-06-04 15:27:41,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:41,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:41,340 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] [2024-06-04 15:27:41,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 15:27:41,340 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)] === [2024-06-04 15:27:41,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash 890712134, now seen corresponding path program 4 times [2024-06-04 15:27:41,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:41,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683891844] [2024-06-04 15:27:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:41,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:42,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:42,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683891844] [2024-06-04 15:27:42,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683891844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:42,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:42,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:27:42,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010051950] [2024-06-04 15:27:42,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:42,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:27:42,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:27:42,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:27:42,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:42,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 39 transitions, 218 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:42,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:42,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:42,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:42,992 INFO L124 PetriNetUnfolderBase]: 83/183 cut-off events. [2024-06-04 15:27:42,992 INFO L125 PetriNetUnfolderBase]: For 2693/2693 co-relation queries the response was YES. [2024-06-04 15:27:42,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 183 events. 83/183 cut-off events. For 2693/2693 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 561 event pairs, 22 based on Foata normal form. 6/188 useless extension candidates. Maximal degree in co-relation 610. Up to 101 conditions per place. [2024-06-04 15:27:42,993 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 29 selfloop transitions, 8 changer transitions 15/54 dead transitions. [2024-06-04 15:27:42,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 54 transitions, 358 flow [2024-06-04 15:27:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-04 15:27:42,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 15:27:42,994 INFO L175 Difference]: Start difference. First operand has 77 places, 39 transitions, 218 flow. Second operand 11 states and 110 transitions. [2024-06-04 15:27:42,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 54 transitions, 358 flow [2024-06-04 15:27:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 54 transitions, 339 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:42,995 INFO L231 Difference]: Finished difference. Result has 70 places, 34 transitions, 190 flow [2024-06-04 15:27:42,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=190, PETRI_PLACES=70, PETRI_TRANSITIONS=34} [2024-06-04 15:27:42,996 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-04 15:27:42,996 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 34 transitions, 190 flow [2024-06-04 15:27:42,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:42,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:42,996 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] [2024-06-04 15:27:42,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 15:27:42,996 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)] === [2024-06-04 15:27:42,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1964881358, now seen corresponding path program 5 times [2024-06-04 15:27:42,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:42,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129991128] [2024-06-04 15:27:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:42,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:44,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:44,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129991128] [2024-06-04 15:27:44,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129991128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:44,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:44,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:27:44,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963925187] [2024-06-04 15:27:44,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:44,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:27:44,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:44,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:27:44,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:27:44,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:44,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 34 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:44,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:44,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:44,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:44,623 INFO L124 PetriNetUnfolderBase]: 70/156 cut-off events. [2024-06-04 15:27:44,623 INFO L125 PetriNetUnfolderBase]: For 1810/1810 co-relation queries the response was YES. [2024-06-04 15:27:44,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 156 events. 70/156 cut-off events. For 1810/1810 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 440 event pairs, 18 based on Foata normal form. 6/161 useless extension candidates. Maximal degree in co-relation 512. Up to 64 conditions per place. [2024-06-04 15:27:44,624 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 24 selfloop transitions, 11 changer transitions 10/47 dead transitions. [2024-06-04 15:27:44,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 47 transitions, 308 flow [2024-06-04 15:27:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-04 15:27:44,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-04 15:27:44,625 INFO L175 Difference]: Start difference. First operand has 70 places, 34 transitions, 190 flow. Second operand 11 states and 108 transitions. [2024-06-04 15:27:44,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 47 transitions, 308 flow [2024-06-04 15:27:44,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 47 transitions, 284 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:44,626 INFO L231 Difference]: Finished difference. Result has 63 places, 30 transitions, 167 flow [2024-06-04 15:27:44,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=167, PETRI_PLACES=63, PETRI_TRANSITIONS=30} [2024-06-04 15:27:44,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-04 15:27:44,627 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 30 transitions, 167 flow [2024-06-04 15:27:44,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:44,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:44,627 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] [2024-06-04 15:27:44,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 15:27:44,627 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)] === [2024-06-04 15:27:44,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:44,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1902163720, now seen corresponding path program 6 times [2024-06-04 15:27:44,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:44,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002003210] [2024-06-04 15:27:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:44,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:45,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002003210] [2024-06-04 15:27:45,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002003210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:45,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:45,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:27:45,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655143137] [2024-06-04 15:27:45,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:45,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:27:45,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:27:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:27:45,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:45,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 30 transitions, 167 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:45,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:45,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:45,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:46,250 INFO L124 PetriNetUnfolderBase]: 58/136 cut-off events. [2024-06-04 15:27:46,250 INFO L125 PetriNetUnfolderBase]: For 1227/1227 co-relation queries the response was YES. [2024-06-04 15:27:46,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 136 events. 58/136 cut-off events. For 1227/1227 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 354 event pairs, 18 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 442. Up to 60 conditions per place. [2024-06-04 15:27:46,250 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 19 selfloop transitions, 6 changer transitions 16/43 dead transitions. [2024-06-04 15:27:46,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 43 transitions, 279 flow [2024-06-04 15:27:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:46,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 15:27:46,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-04 15:27:46,251 INFO L175 Difference]: Start difference. First operand has 63 places, 30 transitions, 167 flow. Second operand 11 states and 106 transitions. [2024-06-04 15:27:46,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 43 transitions, 279 flow [2024-06-04 15:27:46,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 43 transitions, 251 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:27:46,252 INFO L231 Difference]: Finished difference. Result has 59 places, 23 transitions, 110 flow [2024-06-04 15:27:46,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=48, 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=11, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=23} [2024-06-04 15:27:46,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-04 15:27:46,252 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 23 transitions, 110 flow [2024-06-04 15:27:46,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:46,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:46,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:46,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:27:46,253 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)] === [2024-06-04 15:27:46,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:46,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1974712388, now seen corresponding path program 7 times [2024-06-04 15:27:46,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:46,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137528871] [2024-06-04 15:27:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:46,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137528871] [2024-06-04 15:27:47,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137528871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:47,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:47,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:47,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281086178] [2024-06-04 15:27:47,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:47,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:47,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:47,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:47,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 23 transitions, 110 flow. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:47,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:47,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:47,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:47,569 INFO L124 PetriNetUnfolderBase]: 27/71 cut-off events. [2024-06-04 15:27:47,569 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2024-06-04 15:27:47,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 71 events. 27/71 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 1 based on Foata normal form. 6/76 useless extension candidates. Maximal degree in co-relation 186. Up to 24 conditions per place. [2024-06-04 15:27:47,569 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-04 15:27:47,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 32 transitions, 164 flow [2024-06-04 15:27:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-04 15:27:47,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2755681818181818 [2024-06-04 15:27:47,570 INFO L175 Difference]: Start difference. First operand has 59 places, 23 transitions, 110 flow. Second operand 11 states and 97 transitions. [2024-06-04 15:27:47,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 32 transitions, 164 flow [2024-06-04 15:27:47,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-04 15:27:47,570 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-04 15:27:47,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2024-06-04 15:27:47,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-04 15:27:47,571 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-04 15:27:47,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:47,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:27:47,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:27:47,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:27:47,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:27:47,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:27:47,579 INFO L445 BasicCegarLoop]: Path program histogram: [42, 20, 11, 10, 10, 9, 7, 6, 6, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:47,582 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:27:47,582 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:27:47,585 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:27:47,586 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:27:47,587 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:27:47 BasicIcfg [2024-06-04 15:27:47,587 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:27:47,588 INFO L158 Benchmark]: Toolchain (without parser) took 194601.55ms. Allocated memory was 142.6MB in the beginning and 817.9MB in the end (delta: 675.3MB). Free memory was 110.6MB in the beginning and 554.0MB in the end (delta: -443.4MB). Peak memory consumption was 231.6MB. Max. memory is 16.1GB. [2024-06-04 15:27:47,588 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 109.1MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:27:47,588 INFO L158 Benchmark]: Witness Parser took 0.98ms. Allocated memory is still 142.6MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:27:47,588 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.06ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 77.4MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-04 15:27:47,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.80ms. Allocated memory is still 142.6MB. Free memory was 77.4MB in the beginning and 74.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:27:47,589 INFO L158 Benchmark]: Boogie Preprocessor took 34.52ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 71.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:27:47,589 INFO L158 Benchmark]: RCFGBuilder took 593.28ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 78.5MB in the end (delta: -7.0MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2024-06-04 15:27:47,589 INFO L158 Benchmark]: TraceAbstraction took 193385.55ms. Allocated memory was 142.6MB in the beginning and 817.9MB in the end (delta: 675.3MB). Free memory was 77.8MB in the beginning and 554.0MB in the end (delta: -476.2MB). Peak memory consumption was 199.4MB. Max. memory is 16.1GB. [2024-06-04 15:27:47,590 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 109.1MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.98ms. Allocated memory is still 142.6MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 540.06ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 77.4MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.80ms. Allocated memory is still 142.6MB. Free memory was 77.4MB in the beginning and 74.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.52ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 71.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 593.28ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 78.5MB in the end (delta: -7.0MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * TraceAbstraction took 193385.55ms. Allocated memory was 142.6MB in the beginning and 817.9MB in the end (delta: 675.3MB). Free memory was 77.8MB in the beginning and 554.0MB in the end (delta: -476.2MB). Peak memory consumption was 199.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 193.3s, OverallIterations: 153, TraceHistogramMax: 1, PathProgramHistogramMax: 42, EmptinessCheckTime: 0.0s, AutomataDifference: 73.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10446 SdHoareTripleChecker+Valid, 35.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8886 mSDsluCounter, 7074 SdHoareTripleChecker+Invalid, 30.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6208 mSDsCounter, 2415 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58607 IncrementalHoareTripleChecker+Invalid, 61022 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2415 mSolverCounterUnsat, 866 mSDtfsCounter, 58607 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1659 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1658 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3535 ImplicationChecksByTransitivity, 43.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2116occurred in iteration=78, InterpolantAutomatonStates: 1478, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 118.4s InterpolantComputationTime, 2654 NumberOfCodeBlocks, 2654 NumberOfCodeBlocksAsserted, 153 NumberOfCheckSat, 2501 ConstructedInterpolants, 0 QuantifiedInterpolants, 110289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 153 InterpolantComputations, 153 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 15:27:47,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE