./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.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/mix000.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix000.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix000.opt.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-76401ed-m [2024-06-20 15:40:22,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 15:40:22,443 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 15:40:22,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 15:40:22,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 15:40:22,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 15:40:22,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 15:40:22,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 15:40:22,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 15:40:22,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 15:40:22,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 15:40:22,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 15:40:22,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 15:40:22,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 15:40:22,478 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 15:40:22,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 15:40:22,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 15:40:22,478 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 15:40:22,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 15:40:22,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 15:40:22,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 15:40:22,480 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 15:40:22,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 15:40:22,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 15:40:22,481 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 15:40:22,481 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 15:40:22,481 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 15:40:22,482 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 15:40:22,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 15:40:22,482 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 15:40:22,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 15:40:22,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 15:40:22,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:40:22,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 15:40:22,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 15:40:22,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 15:40:22,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 15:40:22,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 15:40:22,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 15:40:22,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 15:40:22,485 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 15:40:22,488 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 15:40:22,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 15:40:22,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 15:40:22,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 15:40:22,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 15:40:22,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 15:40:22,713 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 15:40:22,714 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 15:40:22,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-20 15:40:23,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 15:40:23,889 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 15:40:23,890 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-20 15:40:23,909 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2610927e5/a4dbd0a910f744b0bcb67e1d529093ee/FLAG5b466e517 [2024-06-20 15:40:24,258 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2610927e5/a4dbd0a910f744b0bcb67e1d529093ee [2024-06-20 15:40:24,260 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 15:40:24,261 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 15:40:24,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix000.opt.yml/witness.yml [2024-06-20 15:40:24,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 15:40:24,390 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 15:40:24,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 15:40:24,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 15:40:24,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 15:40:24,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:40:24" (1/2) ... [2024-06-20 15:40:24,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540e3de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:40:24, skipping insertion in model container [2024-06-20 15:40:24,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:40:24" (1/2) ... [2024-06-20 15:40:24,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@423a4358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:40:24, skipping insertion in model container [2024-06-20 15:40:24,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:40:24" (2/2) ... [2024-06-20 15:40:24,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540e3de8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24, skipping insertion in model container [2024-06-20 15:40:24,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:40:24" (2/2) ... [2024-06-20 15:40:24,400 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 15:40:24,460 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 15:40:24,461 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 15:40:24,461 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 15:40:24,461 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 15:40:24,462 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-20 15:40:24,498 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 15:40:24,863 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:40:24,871 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 15:40:24,989 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:40:25,018 INFO L206 MainTranslator]: Completed translation [2024-06-20 15:40:25,019 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25 WrapperNode [2024-06-20 15:40:25,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 15:40:25,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 15:40:25,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 15:40:25,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 15:40:25,025 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 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,046 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 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,070 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-20 15:40:25,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 15:40:25,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 15:40:25,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 15:40:25,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 15:40:25,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,098 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]. [2024-06-20 15:40:25,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 15:40:25,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 15:40:25,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 15:40:25,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 15:40:25,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (1/1) ... [2024-06-20 15:40:25,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:40:25,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 15:40:25,176 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) [2024-06-20 15:40:25,195 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 [2024-06-20 15:40:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 15:40:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 15:40:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 15:40:25,210 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 15:40:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 15:40:25,210 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 15:40:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 15:40:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 15:40:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 15:40:25,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 15:40:25,212 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 15:40:25,336 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 15:40:25,337 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 15:40:25,669 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 15:40:25,669 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 15:40:25,838 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 15:40:25,838 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 15:40:25,840 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:40:25 BoogieIcfgContainer [2024-06-20 15:40:25,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 15:40:25,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 15:40:25,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 15:40:25,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 15:40:25,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 03:40:24" (1/4) ... [2024-06-20 15:40:25,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1141461f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:40:25, skipping insertion in model container [2024-06-20 15:40:25,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:40:24" (2/4) ... [2024-06-20 15:40:25,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1141461f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:40:25, skipping insertion in model container [2024-06-20 15:40:25,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:25" (3/4) ... [2024-06-20 15:40:25,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1141461f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:40:25, skipping insertion in model container [2024-06-20 15:40:25,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:40:25" (4/4) ... [2024-06-20 15:40:25,852 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.opt.i [2024-06-20 15:40:25,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 15:40:25,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 15:40:25,867 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 15:40:25,906 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 15:40:25,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 15:40:25,961 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-20 15:40:25,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:40:25,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 15:40:25,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 15:40:25,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-20 15:40:25,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 15:40:25,982 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;@70e6c412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 15:40:25,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 15:40:25,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 15:40:25,985 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-20 15:40:25,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:40:25,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:25,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 15:40:25,986 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)] === [2024-06-20 15:40:25,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash 362681797, now seen corresponding path program 1 times [2024-06-20 15:40:25,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:25,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300471959] [2024-06-20 15:40:25,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:25,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:27,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:27,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300471959] [2024-06-20 15:40:27,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300471959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:27,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:27,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 15:40:27,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102794416] [2024-06-20 15:40:27,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:27,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 15:40:27,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:27,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 15:40:27,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 15:40:27,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-20 15:40:27,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:27,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:27,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-20 15:40:27,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:27,240 INFO L124 PetriNetUnfolderBase]: 131/261 cut-off events. [2024-06-20 15:40:27,240 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-20 15:40:27,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 261 events. 131/261 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1019 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-20 15:40:27,245 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-20 15:40:27,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 113 flow [2024-06-20 15:40:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:40:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:40:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-06-20 15:40:27,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-06-20 15:40:27,255 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 58 transitions. [2024-06-20 15:40:27,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 113 flow [2024-06-20 15:40:27,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:40:27,259 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-20 15:40:27,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-20 15:40:27,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-20 15:40:27,263 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-20 15:40:27,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:27,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:27,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:27,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 15:40:27,264 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)] === [2024-06-20 15:40:27,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:27,264 INFO L85 PathProgramCache]: Analyzing trace with hash 644883556, now seen corresponding path program 1 times [2024-06-20 15:40:27,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:27,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840215223] [2024-06-20 15:40:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:27,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:28,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840215223] [2024-06-20 15:40:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840215223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:28,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:28,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:40:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081328471] [2024-06-20 15:40:28,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:28,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:40:28,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:28,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:40:28,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:40:28,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 15:40:28,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:28,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:28,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 15:40:28,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:28,145 INFO L124 PetriNetUnfolderBase]: 186/341 cut-off events. [2024-06-20 15:40:28,146 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-20 15:40:28,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 341 events. 186/341 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1272 event pairs, 94 based on Foata normal form. 2/341 useless extension candidates. Maximal degree in co-relation 771. Up to 319 conditions per place. [2024-06-20 15:40:28,148 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-20 15:40:28,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-20 15:40:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:40:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:40:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-20 15:40:28,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-20 15:40:28,150 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-20 15:40:28,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-20 15:40:28,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 15:40:28,151 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-20 15:40:28,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-20 15:40:28,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-20 15:40:28,152 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-20 15:40:28,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:28,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:28,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:28,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 15:40:28,153 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)] === [2024-06-20 15:40:28,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1483445320, now seen corresponding path program 1 times [2024-06-20 15:40:28,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:28,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105659869] [2024-06-20 15:40:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:28,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:28,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105659869] [2024-06-20 15:40:28,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105659869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:28,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:28,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:40:28,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268068444] [2024-06-20 15:40:28,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:28,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:40:28,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:28,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:40:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:40:28,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 15:40:28,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:28,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:28,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 15:40:28,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:29,121 INFO L124 PetriNetUnfolderBase]: 180/331 cut-off events. [2024-06-20 15:40:29,121 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-20 15:40:29,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 331 events. 180/331 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1222 event pairs, 52 based on Foata normal form. 4/334 useless extension candidates. Maximal degree in co-relation 827. Up to 291 conditions per place. [2024-06-20 15:40:29,125 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-20 15:40:29,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-20 15:40:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:40:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:40:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-20 15:40:29,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-06-20 15:40:29,129 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 85 transitions. [2024-06-20 15:40:29,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-20 15:40:29,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 15:40:29,133 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-20 15:40:29,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-20 15:40:29,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-20 15:40:29,134 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-20 15:40:29,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:29,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:29,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:29,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 15:40:29,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:40:29,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:29,136 INFO L85 PathProgramCache]: Analyzing trace with hash -105274318, now seen corresponding path program 1 times [2024-06-20 15:40:29,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:29,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433419539] [2024-06-20 15:40:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:29,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:29,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:29,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433419539] [2024-06-20 15:40:29,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433419539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:29,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:29,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:40:29,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811621924] [2024-06-20 15:40:29,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:29,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:40:29,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:29,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:40:29,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:40:29,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 15:40:29,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:29,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:29,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 15:40:29,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:29,998 INFO L124 PetriNetUnfolderBase]: 137/283 cut-off events. [2024-06-20 15:40:29,998 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-20 15:40:29,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 283 events. 137/283 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1094 event pairs, 57 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 749. Up to 243 conditions per place. [2024-06-20 15:40:30,000 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 24 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-20 15:40:30,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 197 flow [2024-06-20 15:40:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:40:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:40:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-06-20 15:40:30,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-06-20 15:40:30,001 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 5 states and 73 transitions. [2024-06-20 15:40:30,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 197 flow [2024-06-20 15:40:30,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 182 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:30,003 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 131 flow [2024-06-20 15:40:30,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-20 15:40:30,004 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-20 15:40:30,004 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 131 flow [2024-06-20 15:40:30,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:30,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:30,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:30,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 15:40:30,005 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)] === [2024-06-20 15:40:30,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1894897058, now seen corresponding path program 1 times [2024-06-20 15:40:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:30,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453557527] [2024-06-20 15:40:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:30,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:30,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453557527] [2024-06-20 15:40:30,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453557527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:30,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:30,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:40:30,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034941516] [2024-06-20 15:40:30,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:30,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:40:30,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:30,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:40:30,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:40:31,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 15:40:31,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:31,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:31,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 15:40:31,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:31,250 INFO L124 PetriNetUnfolderBase]: 174/320 cut-off events. [2024-06-20 15:40:31,250 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-20 15:40:31,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 320 events. 174/320 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1142 event pairs, 29 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 922. Up to 262 conditions per place. [2024-06-20 15:40:31,252 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-06-20 15:40:31,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 265 flow [2024-06-20 15:40:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-20 15:40:31,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023041474654378 [2024-06-20 15:40:31,254 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 131 flow. Second operand 7 states and 109 transitions. [2024-06-20 15:40:31,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 265 flow [2024-06-20 15:40:31,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 254 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:31,256 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 147 flow [2024-06-20 15:40:31,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-20 15:40:31,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-20 15:40:31,257 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 147 flow [2024-06-20 15:40:31,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:31,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:31,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:31,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 15:40:31,258 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)] === [2024-06-20 15:40:31,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1042189699, now seen corresponding path program 1 times [2024-06-20 15:40:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:31,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592852701] [2024-06-20 15:40:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:31,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:32,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:32,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592852701] [2024-06-20 15:40:32,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592852701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:32,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:32,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:40:32,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644143713] [2024-06-20 15:40:32,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:32,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:40:32,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:32,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:40:32,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:40:32,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 15:40:32,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:32,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:32,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 15:40:32,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:32,373 INFO L124 PetriNetUnfolderBase]: 129/267 cut-off events. [2024-06-20 15:40:32,374 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2024-06-20 15:40:32,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 267 events. 129/267 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1013 event pairs, 36 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 808. Up to 223 conditions per place. [2024-06-20 15:40:32,375 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-20 15:40:32,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 241 flow [2024-06-20 15:40:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:40:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:40:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-06-20 15:40:32,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45698924731182794 [2024-06-20 15:40:32,377 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 147 flow. Second operand 6 states and 85 transitions. [2024-06-20 15:40:32,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 241 flow [2024-06-20 15:40:32,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 219 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:32,380 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 158 flow [2024-06-20 15:40:32,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-20 15:40:32,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-20 15:40:32,381 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 158 flow [2024-06-20 15:40:32,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:32,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:32,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:32,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 15:40:32,382 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)] === [2024-06-20 15:40:32,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:32,382 INFO L85 PathProgramCache]: Analyzing trace with hash -761076105, now seen corresponding path program 1 times [2024-06-20 15:40:32,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:32,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792040632] [2024-06-20 15:40:32,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:32,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:32,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:32,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792040632] [2024-06-20 15:40:32,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792040632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:32,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:32,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:40:32,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151165237] [2024-06-20 15:40:32,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:32,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:40:32,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:40:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:40:33,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:33,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:33,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:33,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:33,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:33,222 INFO L124 PetriNetUnfolderBase]: 171/316 cut-off events. [2024-06-20 15:40:33,223 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-06-20 15:40:33,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 316 events. 171/316 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1125 event pairs, 43 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1028. Up to 291 conditions per place. [2024-06-20 15:40:33,225 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-20 15:40:33,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 272 flow [2024-06-20 15:40:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:40:33,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:40:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-20 15:40:33,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-20 15:40:33,227 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 158 flow. Second operand 6 states and 77 transitions. [2024-06-20 15:40:33,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 272 flow [2024-06-20 15:40:33,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 255 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:33,229 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 174 flow [2024-06-20 15:40:33,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-20 15:40:33,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-20 15:40:33,230 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 174 flow [2024-06-20 15:40:33,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:33,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:33,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:33,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 15:40:33,231 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)] === [2024-06-20 15:40:33,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1910634641, now seen corresponding path program 2 times [2024-06-20 15:40:33,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:33,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891258281] [2024-06-20 15:40:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:33,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:33,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:33,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891258281] [2024-06-20 15:40:33,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891258281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:33,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:33,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:40:33,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075004914] [2024-06-20 15:40:33,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:33,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:40:33,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:33,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:40:33,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:40:34,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:34,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:34,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:34,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:34,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:34,197 INFO L124 PetriNetUnfolderBase]: 169/314 cut-off events. [2024-06-20 15:40:34,198 INFO L125 PetriNetUnfolderBase]: For 966/966 co-relation queries the response was YES. [2024-06-20 15:40:34,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 314 events. 169/314 cut-off events. For 966/966 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1118 event pairs, 44 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 1070. Up to 282 conditions per place. [2024-06-20 15:40:34,200 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-06-20 15:40:34,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 303 flow [2024-06-20 15:40:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-20 15:40:34,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-20 15:40:34,202 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 174 flow. Second operand 7 states and 85 transitions. [2024-06-20 15:40:34,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 303 flow [2024-06-20 15:40:34,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 282 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:34,204 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 218 flow [2024-06-20 15:40:34,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-06-20 15:40:34,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-20 15:40:34,205 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 218 flow [2024-06-20 15:40:34,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:34,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:34,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:34,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 15:40:34,206 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)] === [2024-06-20 15:40:34,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:34,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1997840881, now seen corresponding path program 1 times [2024-06-20 15:40:34,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:34,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78821788] [2024-06-20 15:40:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:34,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78821788] [2024-06-20 15:40:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78821788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:34,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:34,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:34,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519077888] [2024-06-20 15:40:34,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:34,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:34,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:34,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:34,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:34,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:34,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:34,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:34,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:35,077 INFO L124 PetriNetUnfolderBase]: 187/348 cut-off events. [2024-06-20 15:40:35,078 INFO L125 PetriNetUnfolderBase]: For 1292/1292 co-relation queries the response was YES. [2024-06-20 15:40:35,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 348 events. 187/348 cut-off events. For 1292/1292 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1277 event pairs, 43 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 1265. Up to 298 conditions per place. [2024-06-20 15:40:35,080 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-06-20 15:40:35,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 428 flow [2024-06-20 15:40:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 15:40:35,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 15:40:35,082 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 218 flow. Second operand 8 states and 102 transitions. [2024-06-20 15:40:35,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 428 flow [2024-06-20 15:40:35,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 402 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:35,084 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 311 flow [2024-06-20 15:40:35,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=311, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-20 15:40:35,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-20 15:40:35,085 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 311 flow [2024-06-20 15:40:35,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:35,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:35,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:35,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 15:40:35,086 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)] === [2024-06-20 15:40:35,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:35,086 INFO L85 PathProgramCache]: Analyzing trace with hash 809335549, now seen corresponding path program 2 times [2024-06-20 15:40:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:35,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600254872] [2024-06-20 15:40:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:35,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:35,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:35,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600254872] [2024-06-20 15:40:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600254872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:35,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:35,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:35,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538038567] [2024-06-20 15:40:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:35,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:35,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:35,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:35,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:35,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:35,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:35,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:36,015 INFO L124 PetriNetUnfolderBase]: 193/360 cut-off events. [2024-06-20 15:40:36,015 INFO L125 PetriNetUnfolderBase]: For 1728/1728 co-relation queries the response was YES. [2024-06-20 15:40:36,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 360 events. 193/360 cut-off events. For 1728/1728 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1356 event pairs, 46 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 1411. Up to 308 conditions per place. [2024-06-20 15:40:36,018 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 41 selfloop transitions, 19 changer transitions 0/63 dead transitions. [2024-06-20 15:40:36,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 490 flow [2024-06-20 15:40:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-20 15:40:36,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-20 15:40:36,020 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 311 flow. Second operand 8 states and 99 transitions. [2024-06-20 15:40:36,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 490 flow [2024-06-20 15:40:36,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 464 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:36,023 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 377 flow [2024-06-20 15:40:36,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=377, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-20 15:40:36,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-20 15:40:36,024 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 377 flow [2024-06-20 15:40:36,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:36,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:36,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:36,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 15:40:36,025 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)] === [2024-06-20 15:40:36,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1106520429, now seen corresponding path program 3 times [2024-06-20 15:40:36,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:36,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095661236] [2024-06-20 15:40:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:36,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095661236] [2024-06-20 15:40:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095661236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:36,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:36,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076088036] [2024-06-20 15:40:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:36,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:36,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:36,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:36,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 377 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:36,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:36,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:36,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:37,014 INFO L124 PetriNetUnfolderBase]: 209/390 cut-off events. [2024-06-20 15:40:37,014 INFO L125 PetriNetUnfolderBase]: For 2335/2335 co-relation queries the response was YES. [2024-06-20 15:40:37,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 390 events. 209/390 cut-off events. For 2335/2335 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1517 event pairs, 45 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 1640. Up to 308 conditions per place. [2024-06-20 15:40:37,017 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 42 selfloop transitions, 24 changer transitions 0/69 dead transitions. [2024-06-20 15:40:37,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 599 flow [2024-06-20 15:40:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-20 15:40:37,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423963133640553 [2024-06-20 15:40:37,019 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 377 flow. Second operand 7 states and 92 transitions. [2024-06-20 15:40:37,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 599 flow [2024-06-20 15:40:37,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 565 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:37,023 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 440 flow [2024-06-20 15:40:37,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-20 15:40:37,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-20 15:40:37,024 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 440 flow [2024-06-20 15:40:37,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:37,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:37,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:37,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 15:40:37,024 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)] === [2024-06-20 15:40:37,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:37,025 INFO L85 PathProgramCache]: Analyzing trace with hash 947869496, now seen corresponding path program 1 times [2024-06-20 15:40:37,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:37,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245108013] [2024-06-20 15:40:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:37,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:37,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:37,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245108013] [2024-06-20 15:40:37,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245108013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:37,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:37,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87964008] [2024-06-20 15:40:37,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:37,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:37,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:37,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:37,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 440 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:37,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:37,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:37,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:38,060 INFO L124 PetriNetUnfolderBase]: 212/395 cut-off events. [2024-06-20 15:40:38,060 INFO L125 PetriNetUnfolderBase]: For 2834/2834 co-relation queries the response was YES. [2024-06-20 15:40:38,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1755 conditions, 395 events. 212/395 cut-off events. For 2834/2834 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1542 event pairs, 44 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1724. Up to 353 conditions per place. [2024-06-20 15:40:38,063 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 51 selfloop transitions, 14 changer transitions 0/68 dead transitions. [2024-06-20 15:40:38,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 600 flow [2024-06-20 15:40:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-20 15:40:38,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-20 15:40:38,064 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 440 flow. Second operand 7 states and 87 transitions. [2024-06-20 15:40:38,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 600 flow [2024-06-20 15:40:38,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 567 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:38,069 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 454 flow [2024-06-20 15:40:38,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=454, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-20 15:40:38,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-20 15:40:38,069 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 454 flow [2024-06-20 15:40:38,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:38,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:38,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:38,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 15:40:38,070 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)] === [2024-06-20 15:40:38,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1780489524, now seen corresponding path program 2 times [2024-06-20 15:40:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:38,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445900571] [2024-06-20 15:40:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445900571] [2024-06-20 15:40:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445900571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408885955] [2024-06-20 15:40:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:38,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:38,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 454 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:38,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:38,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:38,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:39,151 INFO L124 PetriNetUnfolderBase]: 215/400 cut-off events. [2024-06-20 15:40:39,151 INFO L125 PetriNetUnfolderBase]: For 3154/3154 co-relation queries the response was YES. [2024-06-20 15:40:39,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 400 events. 215/400 cut-off events. For 3154/3154 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1562 event pairs, 47 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1809. Up to 352 conditions per place. [2024-06-20 15:40:39,155 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 49 selfloop transitions, 16 changer transitions 0/68 dead transitions. [2024-06-20 15:40:39,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 68 transitions, 612 flow [2024-06-20 15:40:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-20 15:40:39,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-20 15:40:39,156 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 454 flow. Second operand 7 states and 86 transitions. [2024-06-20 15:40:39,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 68 transitions, 612 flow [2024-06-20 15:40:39,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 581 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 15:40:39,160 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 478 flow [2024-06-20 15:40:39,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-20 15:40:39,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-20 15:40:39,161 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 478 flow [2024-06-20 15:40:39,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:39,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:39,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:39,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 15:40:39,162 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)] === [2024-06-20 15:40:39,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash 816692779, now seen corresponding path program 4 times [2024-06-20 15:40:39,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:39,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554287438] [2024-06-20 15:40:39,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:39,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:39,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554287438] [2024-06-20 15:40:39,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554287438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:39,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:39,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:39,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601578518] [2024-06-20 15:40:39,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:39,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:39,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:39,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:39,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:39,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 478 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:39,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:39,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:39,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:40,060 INFO L124 PetriNetUnfolderBase]: 216/404 cut-off events. [2024-06-20 15:40:40,061 INFO L125 PetriNetUnfolderBase]: For 3630/3630 co-relation queries the response was YES. [2024-06-20 15:40:40,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 404 events. 216/404 cut-off events. For 3630/3630 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1596 event pairs, 50 based on Foata normal form. 2/405 useless extension candidates. Maximal degree in co-relation 1883. Up to 308 conditions per place. [2024-06-20 15:40:40,064 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 43 selfloop transitions, 27 changer transitions 0/73 dead transitions. [2024-06-20 15:40:40,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 692 flow [2024-06-20 15:40:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:40,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-20 15:40:40,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 15:40:40,065 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 478 flow. Second operand 7 states and 91 transitions. [2024-06-20 15:40:40,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 692 flow [2024-06-20 15:40:40,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 653 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-20 15:40:40,070 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 526 flow [2024-06-20 15:40:40,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-20 15:40:40,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-20 15:40:40,071 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 526 flow [2024-06-20 15:40:40,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:40,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:40,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:40,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 15:40:40,072 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)] === [2024-06-20 15:40:40,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:40,073 INFO L85 PathProgramCache]: Analyzing trace with hash -899599862, now seen corresponding path program 3 times [2024-06-20 15:40:40,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:40,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875969903] [2024-06-20 15:40:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:40,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:40,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:40,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875969903] [2024-06-20 15:40:40,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875969903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:40,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:40,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:40,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972858674] [2024-06-20 15:40:40,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:40,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:40,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:40,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:40,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:40,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:40,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 526 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:40,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:40,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:40,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:41,115 INFO L124 PetriNetUnfolderBase]: 214/401 cut-off events. [2024-06-20 15:40:41,115 INFO L125 PetriNetUnfolderBase]: For 4039/4039 co-relation queries the response was YES. [2024-06-20 15:40:41,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1984 conditions, 401 events. 214/401 cut-off events. For 4039/4039 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1581 event pairs, 47 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1949. Up to 342 conditions per place. [2024-06-20 15:40:41,118 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 50 selfloop transitions, 21 changer transitions 0/74 dead transitions. [2024-06-20 15:40:41,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 710 flow [2024-06-20 15:40:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-20 15:40:41,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-20 15:40:41,119 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 526 flow. Second operand 7 states and 87 transitions. [2024-06-20 15:40:41,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 710 flow [2024-06-20 15:40:41,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 639 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-20 15:40:41,125 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 545 flow [2024-06-20 15:40:41,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-06-20 15:40:41,125 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-20 15:40:41,125 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 545 flow [2024-06-20 15:40:41,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:41,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:41,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:41,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 15:40:41,126 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)] === [2024-06-20 15:40:41,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:41,126 INFO L85 PathProgramCache]: Analyzing trace with hash -131257053, now seen corresponding path program 5 times [2024-06-20 15:40:41,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:41,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941343106] [2024-06-20 15:40:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:41,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:41,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:41,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941343106] [2024-06-20 15:40:41,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941343106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:41,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:41,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:41,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543265177] [2024-06-20 15:40:41,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:41,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:41,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:41,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:41,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:41,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 545 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:41,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:41,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:41,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:41,901 INFO L124 PetriNetUnfolderBase]: 210/395 cut-off events. [2024-06-20 15:40:41,901 INFO L125 PetriNetUnfolderBase]: For 4224/4224 co-relation queries the response was YES. [2024-06-20 15:40:41,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 395 events. 210/395 cut-off events. For 4224/4224 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1552 event pairs, 41 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 1909. Up to 337 conditions per place. [2024-06-20 15:40:41,904 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 58 selfloop transitions, 20 changer transitions 0/81 dead transitions. [2024-06-20 15:40:41,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 737 flow [2024-06-20 15:40:41,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 15:40:41,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 15:40:41,905 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 545 flow. Second operand 8 states and 102 transitions. [2024-06-20 15:40:41,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 737 flow [2024-06-20 15:40:41,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 700 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:41,911 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 553 flow [2024-06-20 15:40:41,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=553, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-06-20 15:40:41,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-20 15:40:41,912 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 553 flow [2024-06-20 15:40:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-20 15:40:41,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:41,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:41,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 15:40:41,912 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)] === [2024-06-20 15:40:41,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash 52844784, now seen corresponding path program 1 times [2024-06-20 15:40:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:41,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653717891] [2024-06-20 15:40:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:42,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:42,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653717891] [2024-06-20 15:40:42,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653717891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:42,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:42,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:42,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824327904] [2024-06-20 15:40:42,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:42,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:42,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:42,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:42,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:42,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 553 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:42,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:42,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:42,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:43,080 INFO L124 PetriNetUnfolderBase]: 208/392 cut-off events. [2024-06-20 15:40:43,080 INFO L125 PetriNetUnfolderBase]: For 4409/4409 co-relation queries the response was YES. [2024-06-20 15:40:43,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1962 conditions, 392 events. 208/392 cut-off events. For 4409/4409 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1546 event pairs, 41 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1923. Up to 322 conditions per place. [2024-06-20 15:40:43,083 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 60 selfloop transitions, 21 changer transitions 0/84 dead transitions. [2024-06-20 15:40:43,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 84 transitions, 783 flow [2024-06-20 15:40:43,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 15:40:43,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-20 15:40:43,084 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 553 flow. Second operand 8 states and 103 transitions. [2024-06-20 15:40:43,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 84 transitions, 783 flow [2024-06-20 15:40:43,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 723 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:43,090 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 572 flow [2024-06-20 15:40:43,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2024-06-20 15:40:43,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-20 15:40:43,091 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 572 flow [2024-06-20 15:40:43,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:43,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:43,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:43,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 15:40:43,092 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)] === [2024-06-20 15:40:43,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash 52964940, now seen corresponding path program 1 times [2024-06-20 15:40:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:43,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376558463] [2024-06-20 15:40:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:43,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:43,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:43,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376558463] [2024-06-20 15:40:43,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376558463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:43,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:43,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743333849] [2024-06-20 15:40:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:43,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:43,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:43,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:43,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:43,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:43,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 572 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:43,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:43,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:43,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:44,225 INFO L124 PetriNetUnfolderBase]: 214/404 cut-off events. [2024-06-20 15:40:44,225 INFO L125 PetriNetUnfolderBase]: For 5065/5065 co-relation queries the response was YES. [2024-06-20 15:40:44,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 404 events. 214/404 cut-off events. For 5065/5065 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1607 event pairs, 38 based on Foata normal form. 2/405 useless extension candidates. Maximal degree in co-relation 2004. Up to 298 conditions per place. [2024-06-20 15:40:44,228 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 26 changer transitions 0/86 dead transitions. [2024-06-20 15:40:44,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 802 flow [2024-06-20 15:40:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 15:40:44,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-20 15:40:44,230 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 572 flow. Second operand 8 states and 103 transitions. [2024-06-20 15:40:44,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 802 flow [2024-06-20 15:40:44,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 739 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:44,235 INFO L231 Difference]: Finished difference. Result has 88 places, 73 transitions, 602 flow [2024-06-20 15:40:44,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=88, PETRI_TRANSITIONS=73} [2024-06-20 15:40:44,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-20 15:40:44,236 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 73 transitions, 602 flow [2024-06-20 15:40:44,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:44,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:44,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:44,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 15:40:44,236 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)] === [2024-06-20 15:40:44,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:44,237 INFO L85 PathProgramCache]: Analyzing trace with hash 57613328, now seen corresponding path program 1 times [2024-06-20 15:40:44,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:44,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620538245] [2024-06-20 15:40:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:44,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620538245] [2024-06-20 15:40:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620538245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:45,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:45,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:45,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266960152] [2024-06-20 15:40:45,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:45,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:45,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:45,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:45,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 73 transitions, 602 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:45,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:45,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:45,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:45,320 INFO L124 PetriNetUnfolderBase]: 220/414 cut-off events. [2024-06-20 15:40:45,321 INFO L125 PetriNetUnfolderBase]: For 5731/5731 co-relation queries the response was YES. [2024-06-20 15:40:45,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2172 conditions, 414 events. 220/414 cut-off events. For 5731/5731 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1671 event pairs, 39 based on Foata normal form. 2/415 useless extension candidates. Maximal degree in co-relation 2131. Up to 362 conditions per place. [2024-06-20 15:40:45,346 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 66 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2024-06-20 15:40:45,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 85 transitions, 808 flow [2024-06-20 15:40:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:45,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-20 15:40:45,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 15:40:45,349 INFO L175 Difference]: Start difference. First operand has 88 places, 73 transitions, 602 flow. Second operand 8 states and 98 transitions. [2024-06-20 15:40:45,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 85 transitions, 808 flow [2024-06-20 15:40:45,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 743 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:45,357 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 596 flow [2024-06-20 15:40:45,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=596, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-06-20 15:40:45,358 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-20 15:40:45,358 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 596 flow [2024-06-20 15:40:45,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:45,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:45,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:45,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 15:40:45,359 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)] === [2024-06-20 15:40:45,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:45,359 INFO L85 PathProgramCache]: Analyzing trace with hash -680220766, now seen corresponding path program 2 times [2024-06-20 15:40:45,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:45,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18866046] [2024-06-20 15:40:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:45,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:46,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:46,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18866046] [2024-06-20 15:40:46,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18866046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:46,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:46,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:46,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411610515] [2024-06-20 15:40:46,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:46,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:46,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:46,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:46,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 596 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:46,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:46,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:46,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:46,425 INFO L124 PetriNetUnfolderBase]: 236/440 cut-off events. [2024-06-20 15:40:46,426 INFO L125 PetriNetUnfolderBase]: For 6465/6465 co-relation queries the response was YES. [2024-06-20 15:40:46,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 440 events. 236/440 cut-off events. For 6465/6465 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1782 event pairs, 39 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2308. Up to 329 conditions per place. [2024-06-20 15:40:46,429 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 33 changer transitions 0/93 dead transitions. [2024-06-20 15:40:46,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 900 flow [2024-06-20 15:40:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 15:40:46,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-20 15:40:46,430 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 596 flow. Second operand 8 states and 103 transitions. [2024-06-20 15:40:46,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 900 flow [2024-06-20 15:40:46,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 857 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:46,438 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 705 flow [2024-06-20 15:40:46,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=705, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2024-06-20 15:40:46,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-06-20 15:40:46,439 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 705 flow [2024-06-20 15:40:46,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:46,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:46,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:46,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 15:40:46,440 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)] === [2024-06-20 15:40:46,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 264131966, now seen corresponding path program 3 times [2024-06-20 15:40:46,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:46,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419123626] [2024-06-20 15:40:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:46,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:47,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:47,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419123626] [2024-06-20 15:40:47,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419123626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:47,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:47,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806547525] [2024-06-20 15:40:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:47,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:47,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:47,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:47,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 705 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:47,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:47,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:47,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:47,543 INFO L124 PetriNetUnfolderBase]: 232/434 cut-off events. [2024-06-20 15:40:47,543 INFO L125 PetriNetUnfolderBase]: For 7117/7117 co-relation queries the response was YES. [2024-06-20 15:40:47,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 434 events. 232/434 cut-off events. For 7117/7117 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1766 event pairs, 39 based on Foata normal form. 2/435 useless extension candidates. Maximal degree in co-relation 2395. Up to 345 conditions per place. [2024-06-20 15:40:47,546 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 27 changer transitions 0/93 dead transitions. [2024-06-20 15:40:47,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 927 flow [2024-06-20 15:40:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:47,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 15:40:47,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 15:40:47,548 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 705 flow. Second operand 8 states and 102 transitions. [2024-06-20 15:40:47,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 927 flow [2024-06-20 15:40:47,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 868 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:47,557 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 706 flow [2024-06-20 15:40:47,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=706, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-06-20 15:40:47,557 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-20 15:40:47,557 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 706 flow [2024-06-20 15:40:47,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:47,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:47,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:47,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 15:40:47,558 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)] === [2024-06-20 15:40:47,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash -452326126, now seen corresponding path program 4 times [2024-06-20 15:40:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:47,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026254432] [2024-06-20 15:40:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:47,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:48,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:48,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026254432] [2024-06-20 15:40:48,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026254432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:48,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:48,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125708366] [2024-06-20 15:40:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:48,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:48,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:48,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:48,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 706 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:48,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:48,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:48,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:48,868 INFO L124 PetriNetUnfolderBase]: 238/444 cut-off events. [2024-06-20 15:40:48,868 INFO L125 PetriNetUnfolderBase]: For 7772/7772 co-relation queries the response was YES. [2024-06-20 15:40:48,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 444 events. 238/444 cut-off events. For 7772/7772 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1814 event pairs, 48 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 2514. Up to 325 conditions per place. [2024-06-20 15:40:48,873 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 30 changer transitions 0/95 dead transitions. [2024-06-20 15:40:48,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 972 flow [2024-06-20 15:40:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 15:40:48,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 15:40:48,874 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 706 flow. Second operand 8 states and 102 transitions. [2024-06-20 15:40:48,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 972 flow [2024-06-20 15:40:48,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 912 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:48,882 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 758 flow [2024-06-20 15:40:48,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=646, 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=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=758, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-06-20 15:40:48,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-20 15:40:48,882 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 758 flow [2024-06-20 15:40:48,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:48,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:48,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:48,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 15:40:48,883 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)] === [2024-06-20 15:40:48,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2126064624, now seen corresponding path program 2 times [2024-06-20 15:40:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:48,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187497423] [2024-06-20 15:40:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:48,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:49,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187497423] [2024-06-20 15:40:49,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187497423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:49,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:49,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:49,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773812484] [2024-06-20 15:40:49,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:49,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:49,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:49,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:49,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:49,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:49,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:49,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:49,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:50,010 INFO L124 PetriNetUnfolderBase]: 244/454 cut-off events. [2024-06-20 15:40:50,011 INFO L125 PetriNetUnfolderBase]: For 8689/8689 co-relation queries the response was YES. [2024-06-20 15:40:50,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 454 events. 244/454 cut-off events. For 8689/8689 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1872 event pairs, 44 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2649. Up to 396 conditions per place. [2024-06-20 15:40:50,015 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 74 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-20 15:40:50,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 95 transitions, 982 flow [2024-06-20 15:40:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-20 15:40:50,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-20 15:40:50,019 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 758 flow. Second operand 8 states and 97 transitions. [2024-06-20 15:40:50,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 95 transitions, 982 flow [2024-06-20 15:40:50,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 95 transitions, 892 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:50,027 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 735 flow [2024-06-20 15:40:50,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=735, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2024-06-20 15:40:50,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-20 15:40:50,028 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 735 flow [2024-06-20 15:40:50,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:50,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:50,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:50,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 15:40:50,028 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)] === [2024-06-20 15:40:50,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash 639640146, now seen corresponding path program 3 times [2024-06-20 15:40:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:50,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944473943] [2024-06-20 15:40:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:51,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944473943] [2024-06-20 15:40:51,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944473943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:51,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:51,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:51,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102818059] [2024-06-20 15:40:51,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:51,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:51,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:51,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:51,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:51,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:51,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 735 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:51,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:51,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:51,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:51,383 INFO L124 PetriNetUnfolderBase]: 247/459 cut-off events. [2024-06-20 15:40:51,383 INFO L125 PetriNetUnfolderBase]: For 8924/8924 co-relation queries the response was YES. [2024-06-20 15:40:51,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 459 events. 247/459 cut-off events. For 8924/8924 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1890 event pairs, 42 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 2661. Up to 420 conditions per place. [2024-06-20 15:40:51,386 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2024-06-20 15:40:51,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 98 transitions, 969 flow [2024-06-20 15:40:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:51,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-20 15:40:51,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 15:40:51,387 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 735 flow. Second operand 8 states and 94 transitions. [2024-06-20 15:40:51,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 98 transitions, 969 flow [2024-06-20 15:40:51,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 918 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:51,398 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 752 flow [2024-06-20 15:40:51,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=752, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2024-06-20 15:40:51,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-20 15:40:51,398 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 752 flow [2024-06-20 15:40:51,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:51,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:51,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:51,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 15:40:51,399 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)] === [2024-06-20 15:40:51,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2126064872, now seen corresponding path program 5 times [2024-06-20 15:40:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:51,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41251081] [2024-06-20 15:40:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:51,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:52,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41251081] [2024-06-20 15:40:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41251081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:52,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:52,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318810655] [2024-06-20 15:40:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:52,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:52,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:52,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:52,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 752 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:52,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:52,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:52,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:52,467 INFO L124 PetriNetUnfolderBase]: 250/464 cut-off events. [2024-06-20 15:40:52,467 INFO L125 PetriNetUnfolderBase]: For 9569/9569 co-relation queries the response was YES. [2024-06-20 15:40:52,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 464 events. 250/464 cut-off events. For 9569/9569 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1908 event pairs, 44 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 2719. Up to 357 conditions per place. [2024-06-20 15:40:52,471 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 33 changer transitions 0/102 dead transitions. [2024-06-20 15:40:52,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 102 transitions, 1016 flow [2024-06-20 15:40:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 15:40:52,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-20 15:40:52,472 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 752 flow. Second operand 8 states and 103 transitions. [2024-06-20 15:40:52,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 102 transitions, 1016 flow [2024-06-20 15:40:52,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 102 transitions, 976 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:52,484 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 813 flow [2024-06-20 15:40:52,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=813, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-06-20 15:40:52,485 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-20 15:40:52,485 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 813 flow [2024-06-20 15:40:52,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:52,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:52,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:52,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 15:40:52,486 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)] === [2024-06-20 15:40:52,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash 639631776, now seen corresponding path program 4 times [2024-06-20 15:40:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401976188] [2024-06-20 15:40:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:52,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:53,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401976188] [2024-06-20 15:40:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401976188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:53,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458437427] [2024-06-20 15:40:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:53,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:53,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:53,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:53,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 813 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:53,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:53,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:53,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:53,635 INFO L124 PetriNetUnfolderBase]: 251/466 cut-off events. [2024-06-20 15:40:53,635 INFO L125 PetriNetUnfolderBase]: For 10547/10547 co-relation queries the response was YES. [2024-06-20 15:40:53,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 466 events. 251/466 cut-off events. For 10547/10547 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1921 event pairs, 41 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 2828. Up to 372 conditions per place. [2024-06-20 15:40:53,638 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 74 selfloop transitions, 30 changer transitions 0/107 dead transitions. [2024-06-20 15:40:53,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 1153 flow [2024-06-20 15:40:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:53,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 15:40:53,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-20 15:40:53,640 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 813 flow. Second operand 8 states and 103 transitions. [2024-06-20 15:40:53,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 1153 flow [2024-06-20 15:40:53,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 1068 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:53,653 INFO L231 Difference]: Finished difference. Result has 110 places, 97 transitions, 853 flow [2024-06-20 15:40:53,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=853, PETRI_PLACES=110, PETRI_TRANSITIONS=97} [2024-06-20 15:40:53,654 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-20 15:40:53,654 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 97 transitions, 853 flow [2024-06-20 15:40:53,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:53,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:53,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:53,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 15:40:53,655 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)] === [2024-06-20 15:40:53,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1076928240, now seen corresponding path program 6 times [2024-06-20 15:40:53,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:53,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926485954] [2024-06-20 15:40:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:53,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:54,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:54,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926485954] [2024-06-20 15:40:54,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926485954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:54,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:54,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:54,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798889216] [2024-06-20 15:40:54,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:54,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:54,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:54,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:54,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 97 transitions, 853 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:54,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:54,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:54,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:54,828 INFO L124 PetriNetUnfolderBase]: 249/463 cut-off events. [2024-06-20 15:40:54,828 INFO L125 PetriNetUnfolderBase]: For 10607/10607 co-relation queries the response was YES. [2024-06-20 15:40:54,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 463 events. 249/463 cut-off events. For 10607/10607 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1922 event pairs, 44 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 2803. Up to 321 conditions per place. [2024-06-20 15:40:54,831 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 58 selfloop transitions, 46 changer transitions 0/107 dead transitions. [2024-06-20 15:40:54,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 107 transitions, 1121 flow [2024-06-20 15:40:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 15:40:54,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 15:40:54,833 INFO L175 Difference]: Start difference. First operand has 110 places, 97 transitions, 853 flow. Second operand 8 states and 102 transitions. [2024-06-20 15:40:54,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 107 transitions, 1121 flow [2024-06-20 15:40:54,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 107 transitions, 1067 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:54,844 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 930 flow [2024-06-20 15:40:54,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=930, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-06-20 15:40:54,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-20 15:40:54,845 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 930 flow [2024-06-20 15:40:54,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:40:54,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:54,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:54,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 15:40:54,846 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)] === [2024-06-20 15:40:54,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:54,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2117482832, now seen corresponding path program 1 times [2024-06-20 15:40:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:54,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156438343] [2024-06-20 15:40:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:54,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:56,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:56,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156438343] [2024-06-20 15:40:56,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156438343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:56,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:56,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:56,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437763036] [2024-06-20 15:40:56,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:56,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:56,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:56,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:56,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:56,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-20 15:40:56,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 930 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:56,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:56,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-20 15:40:56,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:56,628 INFO L124 PetriNetUnfolderBase]: 227/437 cut-off events. [2024-06-20 15:40:56,628 INFO L125 PetriNetUnfolderBase]: For 10914/10916 co-relation queries the response was YES. [2024-06-20 15:40:56,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2774 conditions, 437 events. 227/437 cut-off events. For 10914/10916 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1851 event pairs, 39 based on Foata normal form. 4/439 useless extension candidates. Maximal degree in co-relation 2719. Up to 362 conditions per place. [2024-06-20 15:40:56,631 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 77 selfloop transitions, 14 changer transitions 0/108 dead transitions. [2024-06-20 15:40:56,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 108 transitions, 1132 flow [2024-06-20 15:40:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-20 15:40:56,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 15:40:56,633 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 930 flow. Second operand 9 states and 111 transitions. [2024-06-20 15:40:56,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 108 transitions, 1132 flow [2024-06-20 15:40:56,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 1017 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:56,648 INFO L231 Difference]: Finished difference. Result has 117 places, 99 transitions, 847 flow [2024-06-20 15:40:56,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=847, PETRI_PLACES=117, PETRI_TRANSITIONS=99} [2024-06-20 15:40:56,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-20 15:40:56,649 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 99 transitions, 847 flow [2024-06-20 15:40:56,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:56,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:56,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:56,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 15:40:56,649 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)] === [2024-06-20 15:40:56,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1641914455, now seen corresponding path program 1 times [2024-06-20 15:40:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:56,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556858787] [2024-06-20 15:40:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:57,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:57,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556858787] [2024-06-20 15:40:57,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556858787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:57,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:57,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:57,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256332099] [2024-06-20 15:40:57,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:57,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:57,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:57,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:57,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:57,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:57,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 99 transitions, 847 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:57,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:57,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:57,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:58,295 INFO L124 PetriNetUnfolderBase]: 249/465 cut-off events. [2024-06-20 15:40:58,296 INFO L125 PetriNetUnfolderBase]: For 11114/11114 co-relation queries the response was YES. [2024-06-20 15:40:58,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2873 conditions, 465 events. 249/465 cut-off events. For 11114/11114 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1923 event pairs, 35 based on Foata normal form. 1/465 useless extension candidates. Maximal degree in co-relation 2817. Up to 374 conditions per place. [2024-06-20 15:40:58,299 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 83 selfloop transitions, 28 changer transitions 0/114 dead transitions. [2024-06-20 15:40:58,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 114 transitions, 1153 flow [2024-06-20 15:40:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-20 15:40:58,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-20 15:40:58,300 INFO L175 Difference]: Start difference. First operand has 117 places, 99 transitions, 847 flow. Second operand 9 states and 112 transitions. [2024-06-20 15:40:58,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 114 transitions, 1153 flow [2024-06-20 15:40:58,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 1103 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-20 15:40:58,313 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 900 flow [2024-06-20 15:40:58,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=900, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-06-20 15:40:58,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-20 15:40:58,314 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 900 flow [2024-06-20 15:40:58,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:58,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:58,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:58,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 15:40:58,314 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)] === [2024-06-20 15:40:58,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:58,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1641914672, now seen corresponding path program 1 times [2024-06-20 15:40:58,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:58,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339250169] [2024-06-20 15:40:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:58,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:59,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:59,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339250169] [2024-06-20 15:40:59,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339250169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:59,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:59,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:59,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551014992] [2024-06-20 15:40:59,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:59,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:59,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:59,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:59,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:40:59,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:59,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:59,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:40:59,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:59,459 INFO L124 PetriNetUnfolderBase]: 261/485 cut-off events. [2024-06-20 15:40:59,459 INFO L125 PetriNetUnfolderBase]: For 13504/13504 co-relation queries the response was YES. [2024-06-20 15:40:59,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 485 events. 261/485 cut-off events. For 13504/13504 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2022 event pairs, 34 based on Foata normal form. 4/488 useless extension candidates. Maximal degree in co-relation 3006. Up to 385 conditions per place. [2024-06-20 15:40:59,462 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 29 changer transitions 0/118 dead transitions. [2024-06-20 15:40:59,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 1228 flow [2024-06-20 15:40:59,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-20 15:40:59,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-20 15:40:59,464 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 900 flow. Second operand 9 states and 114 transitions. [2024-06-20 15:40:59,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 1228 flow [2024-06-20 15:40:59,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 118 transitions, 1134 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 15:40:59,477 INFO L231 Difference]: Finished difference. Result has 119 places, 104 transitions, 924 flow [2024-06-20 15:40:59,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=924, PETRI_PLACES=119, PETRI_TRANSITIONS=104} [2024-06-20 15:40:59,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-20 15:40:59,478 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 924 flow [2024-06-20 15:40:59,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:59,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:59,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:59,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 15:40:59,478 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)] === [2024-06-20 15:40:59,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1786006795, now seen corresponding path program 2 times [2024-06-20 15:40:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:59,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535585996] [2024-06-20 15:40:59,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:59,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:00,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:00,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535585996] [2024-06-20 15:41:00,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535585996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:00,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:00,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655967677] [2024-06-20 15:41:00,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:00,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:00,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:00,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:00,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:00,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:00,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 924 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:00,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:00,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:00,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:01,056 INFO L124 PetriNetUnfolderBase]: 269/502 cut-off events. [2024-06-20 15:41:01,056 INFO L125 PetriNetUnfolderBase]: For 13848/13848 co-relation queries the response was YES. [2024-06-20 15:41:01,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3277 conditions, 502 events. 269/502 cut-off events. For 13848/13848 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2135 event pairs, 36 based on Foata normal form. 1/502 useless extension candidates. Maximal degree in co-relation 3221. Up to 377 conditions per place. [2024-06-20 15:41:01,059 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 37 changer transitions 0/120 dead transitions. [2024-06-20 15:41:01,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 120 transitions, 1350 flow [2024-06-20 15:41:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 15:41:01,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 15:41:01,060 INFO L175 Difference]: Start difference. First operand has 119 places, 104 transitions, 924 flow. Second operand 9 states and 113 transitions. [2024-06-20 15:41:01,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 120 transitions, 1350 flow [2024-06-20 15:41:01,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 1254 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:01,074 INFO L231 Difference]: Finished difference. Result has 121 places, 108 transitions, 999 flow [2024-06-20 15:41:01,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=999, PETRI_PLACES=121, PETRI_TRANSITIONS=108} [2024-06-20 15:41:01,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-20 15:41:01,075 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 108 transitions, 999 flow [2024-06-20 15:41:01,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:01,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:01,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:01,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 15:41:01,076 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)] === [2024-06-20 15:41:01,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1786007012, now seen corresponding path program 2 times [2024-06-20 15:41:01,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:01,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735850718] [2024-06-20 15:41:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:01,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:01,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735850718] [2024-06-20 15:41:01,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735850718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:01,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:01,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:01,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665662131] [2024-06-20 15:41:01,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:01,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:01,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:01,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:01,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:02,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:02,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 108 transitions, 999 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:02,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:02,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:02,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:02,303 INFO L124 PetriNetUnfolderBase]: 305/560 cut-off events. [2024-06-20 15:41:02,303 INFO L125 PetriNetUnfolderBase]: For 18749/18749 co-relation queries the response was YES. [2024-06-20 15:41:02,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3833 conditions, 560 events. 305/560 cut-off events. For 18749/18749 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2435 event pairs, 38 based on Foata normal form. 2/561 useless extension candidates. Maximal degree in co-relation 3776. Up to 392 conditions per place. [2024-06-20 15:41:02,306 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 42 changer transitions 0/131 dead transitions. [2024-06-20 15:41:02,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 131 transitions, 1553 flow [2024-06-20 15:41:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-20 15:41:02,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-20 15:41:02,307 INFO L175 Difference]: Start difference. First operand has 121 places, 108 transitions, 999 flow. Second operand 9 states and 119 transitions. [2024-06-20 15:41:02,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 131 transitions, 1553 flow [2024-06-20 15:41:02,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 131 transitions, 1475 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:02,324 INFO L231 Difference]: Finished difference. Result has 126 places, 116 transitions, 1170 flow [2024-06-20 15:41:02,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=126, PETRI_TRANSITIONS=116} [2024-06-20 15:41:02,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-20 15:41:02,325 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 116 transitions, 1170 flow [2024-06-20 15:41:02,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:02,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:02,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:02,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 15:41:02,325 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)] === [2024-06-20 15:41:02,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:02,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1785805202, now seen corresponding path program 3 times [2024-06-20 15:41:02,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:02,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319224609] [2024-06-20 15:41:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:02,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:03,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:03,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319224609] [2024-06-20 15:41:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319224609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:03,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:03,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:03,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921677334] [2024-06-20 15:41:03,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:03,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:03,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:03,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 116 transitions, 1170 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:03,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:03,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:03,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:03,634 INFO L124 PetriNetUnfolderBase]: 301/554 cut-off events. [2024-06-20 15:41:03,634 INFO L125 PetriNetUnfolderBase]: For 18982/18982 co-relation queries the response was YES. [2024-06-20 15:41:03,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 554 events. 301/554 cut-off events. For 18982/18982 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2418 event pairs, 39 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 3856. Up to 453 conditions per place. [2024-06-20 15:41:03,637 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 30 changer transitions 0/130 dead transitions. [2024-06-20 15:41:03,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 130 transitions, 1522 flow [2024-06-20 15:41:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 15:41:03,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 15:41:03,638 INFO L175 Difference]: Start difference. First operand has 126 places, 116 transitions, 1170 flow. Second operand 9 states and 113 transitions. [2024-06-20 15:41:03,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 130 transitions, 1522 flow [2024-06-20 15:41:03,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 130 transitions, 1421 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-20 15:41:03,656 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 1211 flow [2024-06-20 15:41:03,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1211, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-06-20 15:41:03,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-20 15:41:03,657 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 1211 flow [2024-06-20 15:41:03,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:03,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:03,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:03,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 15:41:03,658 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)] === [2024-06-20 15:41:03,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1786014452, now seen corresponding path program 4 times [2024-06-20 15:41:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:03,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773437265] [2024-06-20 15:41:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:03,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:04,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:04,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773437265] [2024-06-20 15:41:04,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773437265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:04,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:04,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:04,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346191272] [2024-06-20 15:41:04,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:04,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:04,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:04,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:04,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:04,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:04,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 1211 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:04,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:04,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:04,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:04,806 INFO L124 PetriNetUnfolderBase]: 297/548 cut-off events. [2024-06-20 15:41:04,806 INFO L125 PetriNetUnfolderBase]: For 18066/18066 co-relation queries the response was YES. [2024-06-20 15:41:04,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3793 conditions, 548 events. 297/548 cut-off events. For 18066/18066 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2378 event pairs, 36 based on Foata normal form. 2/549 useless extension candidates. Maximal degree in co-relation 3732. Up to 387 conditions per place. [2024-06-20 15:41:04,809 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 83 selfloop transitions, 46 changer transitions 0/132 dead transitions. [2024-06-20 15:41:04,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 132 transitions, 1573 flow [2024-06-20 15:41:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-20 15:41:04,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 15:41:04,826 INFO L175 Difference]: Start difference. First operand has 131 places, 119 transitions, 1211 flow. Second operand 9 states and 117 transitions. [2024-06-20 15:41:04,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 132 transitions, 1573 flow [2024-06-20 15:41:04,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 132 transitions, 1461 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:04,846 INFO L231 Difference]: Finished difference. Result has 133 places, 119 transitions, 1196 flow [2024-06-20 15:41:04,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1196, PETRI_PLACES=133, PETRI_TRANSITIONS=119} [2024-06-20 15:41:04,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-20 15:41:04,847 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 119 transitions, 1196 flow [2024-06-20 15:41:04,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:04,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:04,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:04,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 15:41:04,847 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)] === [2024-06-20 15:41:04,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1785804985, now seen corresponding path program 3 times [2024-06-20 15:41:04,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:04,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021250511] [2024-06-20 15:41:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:05,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:05,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021250511] [2024-06-20 15:41:05,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021250511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:05,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:05,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:05,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072610545] [2024-06-20 15:41:05,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:05,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:05,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:05,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:05,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:05,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:05,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 119 transitions, 1196 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:05,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:05,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:05,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:06,268 INFO L124 PetriNetUnfolderBase]: 295/545 cut-off events. [2024-06-20 15:41:06,269 INFO L125 PetriNetUnfolderBase]: For 17685/17685 co-relation queries the response was YES. [2024-06-20 15:41:06,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 545 events. 295/545 cut-off events. For 17685/17685 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2351 event pairs, 38 based on Foata normal form. 1/545 useless extension candidates. Maximal degree in co-relation 3690. Up to 447 conditions per place. [2024-06-20 15:41:06,274 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 98 selfloop transitions, 29 changer transitions 0/130 dead transitions. [2024-06-20 15:41:06,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 130 transitions, 1478 flow [2024-06-20 15:41:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-20 15:41:06,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-20 15:41:06,281 INFO L175 Difference]: Start difference. First operand has 133 places, 119 transitions, 1196 flow. Second operand 9 states and 112 transitions. [2024-06-20 15:41:06,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 130 transitions, 1478 flow [2024-06-20 15:41:06,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 1369 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:06,310 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 1150 flow [2024-06-20 15:41:06,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1150, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2024-06-20 15:41:06,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-20 15:41:06,311 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 1150 flow [2024-06-20 15:41:06,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:06,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:06,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 15:41:06,311 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)] === [2024-06-20 15:41:06,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1653609447, now seen corresponding path program 4 times [2024-06-20 15:41:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:06,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474313862] [2024-06-20 15:41:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:06,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:07,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:07,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474313862] [2024-06-20 15:41:07,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474313862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:07,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:07,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:07,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633755132] [2024-06-20 15:41:07,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:07,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:07,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:07,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:07,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:07,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:07,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:07,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:07,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:07,894 INFO L124 PetriNetUnfolderBase]: 298/552 cut-off events. [2024-06-20 15:41:07,895 INFO L125 PetriNetUnfolderBase]: For 18592/18592 co-relation queries the response was YES. [2024-06-20 15:41:07,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 552 events. 298/552 cut-off events. For 18592/18592 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2402 event pairs, 44 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 3697. Up to 440 conditions per place. [2024-06-20 15:41:07,898 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-06-20 15:41:07,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 130 transitions, 1488 flow [2024-06-20 15:41:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-20 15:41:07,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 15:41:07,899 INFO L175 Difference]: Start difference. First operand has 135 places, 119 transitions, 1150 flow. Second operand 9 states and 111 transitions. [2024-06-20 15:41:07,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 130 transitions, 1488 flow [2024-06-20 15:41:07,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 1383 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:07,924 INFO L231 Difference]: Finished difference. Result has 135 places, 121 transitions, 1166 flow [2024-06-20 15:41:07,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1166, PETRI_PLACES=135, PETRI_TRANSITIONS=121} [2024-06-20 15:41:07,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-20 15:41:07,924 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 121 transitions, 1166 flow [2024-06-20 15:41:07,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:07,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:07,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:07,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 15:41:07,925 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)] === [2024-06-20 15:41:07,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:07,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1137206486, now seen corresponding path program 5 times [2024-06-20 15:41:07,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:07,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906117103] [2024-06-20 15:41:07,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:07,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:08,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:08,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906117103] [2024-06-20 15:41:08,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906117103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:08,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:08,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:08,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31513234] [2024-06-20 15:41:08,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:08,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:08,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:08,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:08,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:08,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:08,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 121 transitions, 1166 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:08,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:08,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:08,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:09,218 INFO L124 PetriNetUnfolderBase]: 304/562 cut-off events. [2024-06-20 15:41:09,218 INFO L125 PetriNetUnfolderBase]: For 20480/20480 co-relation queries the response was YES. [2024-06-20 15:41:09,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 562 events. 304/562 cut-off events. For 20480/20480 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2469 event pairs, 46 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 3755. Up to 447 conditions per place. [2024-06-20 15:41:09,222 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 33 changer transitions 0/133 dead transitions. [2024-06-20 15:41:09,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 133 transitions, 1516 flow [2024-06-20 15:41:09,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-20 15:41:09,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-20 15:41:09,225 INFO L175 Difference]: Start difference. First operand has 135 places, 121 transitions, 1166 flow. Second operand 9 states and 112 transitions. [2024-06-20 15:41:09,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 133 transitions, 1516 flow [2024-06-20 15:41:09,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 1411 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:09,253 INFO L231 Difference]: Finished difference. Result has 137 places, 124 transitions, 1193 flow [2024-06-20 15:41:09,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1193, PETRI_PLACES=137, PETRI_TRANSITIONS=124} [2024-06-20 15:41:09,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-20 15:41:09,254 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 124 transitions, 1193 flow [2024-06-20 15:41:09,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:09,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:09,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:09,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 15:41:09,255 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)] === [2024-06-20 15:41:09,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:09,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1456733550, now seen corresponding path program 6 times [2024-06-20 15:41:09,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:09,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369411031] [2024-06-20 15:41:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:09,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:10,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:10,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369411031] [2024-06-20 15:41:10,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369411031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:10,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:10,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311371991] [2024-06-20 15:41:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:10,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:10,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:10,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 124 transitions, 1193 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:10,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:10,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:10,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:10,480 INFO L124 PetriNetUnfolderBase]: 325/596 cut-off events. [2024-06-20 15:41:10,480 INFO L125 PetriNetUnfolderBase]: For 23854/23854 co-relation queries the response was YES. [2024-06-20 15:41:10,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4247 conditions, 596 events. 325/596 cut-off events. For 23854/23854 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2646 event pairs, 45 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 4183. Up to 446 conditions per place. [2024-06-20 15:41:10,485 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 41 changer transitions 0/141 dead transitions. [2024-06-20 15:41:10,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 141 transitions, 1699 flow [2024-06-20 15:41:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-20 15:41:10,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-20 15:41:10,486 INFO L175 Difference]: Start difference. First operand has 137 places, 124 transitions, 1193 flow. Second operand 9 states and 118 transitions. [2024-06-20 15:41:10,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 141 transitions, 1699 flow [2024-06-20 15:41:10,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 141 transitions, 1589 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:10,512 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 1288 flow [2024-06-20 15:41:10,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1288, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2024-06-20 15:41:10,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-20 15:41:10,513 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 1288 flow [2024-06-20 15:41:10,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:10,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:10,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:10,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 15:41:10,513 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)] === [2024-06-20 15:41:10,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1226999767, now seen corresponding path program 5 times [2024-06-20 15:41:10,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:10,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53437266] [2024-06-20 15:41:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53437266] [2024-06-20 15:41:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53437266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:11,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116152197] [2024-06-20 15:41:11,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:11,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:11,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:11,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 1288 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:11,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:11,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:11,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:12,069 INFO L124 PetriNetUnfolderBase]: 328/603 cut-off events. [2024-06-20 15:41:12,069 INFO L125 PetriNetUnfolderBase]: For 25032/25032 co-relation queries the response was YES. [2024-06-20 15:41:12,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4407 conditions, 603 events. 328/603 cut-off events. For 25032/25032 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2689 event pairs, 47 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 4341. Up to 432 conditions per place. [2024-06-20 15:41:12,073 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 53 changer transitions 0/143 dead transitions. [2024-06-20 15:41:12,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 143 transitions, 1800 flow [2024-06-20 15:41:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:12,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 15:41:12,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 15:41:12,084 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 1288 flow. Second operand 9 states and 113 transitions. [2024-06-20 15:41:12,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 143 transitions, 1800 flow [2024-06-20 15:41:12,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 143 transitions, 1716 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:12,114 INFO L231 Difference]: Finished difference. Result has 144 places, 133 transitions, 1431 flow [2024-06-20 15:41:12,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1431, PETRI_PLACES=144, PETRI_TRANSITIONS=133} [2024-06-20 15:41:12,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-20 15:41:12,115 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 133 transitions, 1431 flow [2024-06-20 15:41:12,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:12,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:12,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:12,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 15:41:12,116 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)] === [2024-06-20 15:41:12,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:12,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1483500060, now seen corresponding path program 7 times [2024-06-20 15:41:12,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:12,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733330346] [2024-06-20 15:41:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:12,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:13,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:13,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733330346] [2024-06-20 15:41:13,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733330346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:13,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:13,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:13,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136290632] [2024-06-20 15:41:13,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:13,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:13,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:13,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:13,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:13,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 1431 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:13,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:13,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:13,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:13,330 INFO L124 PetriNetUnfolderBase]: 329/605 cut-off events. [2024-06-20 15:41:13,330 INFO L125 PetriNetUnfolderBase]: For 25919/25919 co-relation queries the response was YES. [2024-06-20 15:41:13,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 605 events. 329/605 cut-off events. For 25919/25919 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2716 event pairs, 44 based on Foata normal form. 2/606 useless extension candidates. Maximal degree in co-relation 4406. Up to 454 conditions per place. [2024-06-20 15:41:13,334 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 42 changer transitions 0/148 dead transitions. [2024-06-20 15:41:13,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 148 transitions, 1901 flow [2024-06-20 15:41:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:13,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:13,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-20 15:41:13,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-20 15:41:13,335 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 1431 flow. Second operand 9 states and 119 transitions. [2024-06-20 15:41:13,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 148 transitions, 1901 flow [2024-06-20 15:41:13,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 148 transitions, 1801 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:13,370 INFO L231 Difference]: Finished difference. Result has 148 places, 135 transitions, 1454 flow [2024-06-20 15:41:13,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1454, PETRI_PLACES=148, PETRI_TRANSITIONS=135} [2024-06-20 15:41:13,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-20 15:41:13,371 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 135 transitions, 1454 flow [2024-06-20 15:41:13,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:13,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:13,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:13,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 15:41:13,372 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)] === [2024-06-20 15:41:13,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1483500277, now seen corresponding path program 6 times [2024-06-20 15:41:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100787953] [2024-06-20 15:41:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:14,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:14,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100787953] [2024-06-20 15:41:14,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100787953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:14,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:14,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:14,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165751067] [2024-06-20 15:41:14,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:14,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:14,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:14,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:14,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 135 transitions, 1454 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:14,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:14,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:14,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:15,166 INFO L124 PetriNetUnfolderBase]: 327/602 cut-off events. [2024-06-20 15:41:15,166 INFO L125 PetriNetUnfolderBase]: For 24904/24904 co-relation queries the response was YES. [2024-06-20 15:41:15,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4445 conditions, 602 events. 327/602 cut-off events. For 24904/24904 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2691 event pairs, 46 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 4375. Up to 479 conditions per place. [2024-06-20 15:41:15,170 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 105 selfloop transitions, 36 changer transitions 0/144 dead transitions. [2024-06-20 15:41:15,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 144 transitions, 1778 flow [2024-06-20 15:41:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 15:41:15,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 15:41:15,171 INFO L175 Difference]: Start difference. First operand has 148 places, 135 transitions, 1454 flow. Second operand 9 states and 113 transitions. [2024-06-20 15:41:15,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 144 transitions, 1778 flow [2024-06-20 15:41:15,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1671 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:15,204 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 1424 flow [2024-06-20 15:41:15,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1424, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2024-06-20 15:41:15,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-20 15:41:15,205 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 1424 flow [2024-06-20 15:41:15,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:15,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:15,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:15,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 15:41:15,206 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)] === [2024-06-20 15:41:15,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:15,206 INFO L85 PathProgramCache]: Analyzing trace with hash -870973247, now seen corresponding path program 1 times [2024-06-20 15:41:15,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:15,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339383073] [2024-06-20 15:41:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:15,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:16,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:16,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339383073] [2024-06-20 15:41:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339383073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:16,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412033719] [2024-06-20 15:41:16,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:16,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:16,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:16,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:16,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:16,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:16,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 1424 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:16,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:16,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:16,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:16,768 INFO L124 PetriNetUnfolderBase]: 325/599 cut-off events. [2024-06-20 15:41:16,769 INFO L125 PetriNetUnfolderBase]: For 24860/24860 co-relation queries the response was YES. [2024-06-20 15:41:16,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 599 events. 325/599 cut-off events. For 24860/24860 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2670 event pairs, 43 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 4281. Up to 542 conditions per place. [2024-06-20 15:41:16,772 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 124 selfloop transitions, 15 changer transitions 0/142 dead transitions. [2024-06-20 15:41:16,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 142 transitions, 1718 flow [2024-06-20 15:41:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:41:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:41:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-20 15:41:16,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:41:16,773 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 1424 flow. Second operand 8 states and 96 transitions. [2024-06-20 15:41:16,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 142 transitions, 1718 flow [2024-06-20 15:41:16,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 142 transitions, 1532 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-20 15:41:16,806 INFO L231 Difference]: Finished difference. Result has 149 places, 135 transitions, 1275 flow [2024-06-20 15:41:16,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1275, PETRI_PLACES=149, PETRI_TRANSITIONS=135} [2024-06-20 15:41:16,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-20 15:41:16,806 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 135 transitions, 1275 flow [2024-06-20 15:41:16,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:16,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:16,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 15:41:16,807 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)] === [2024-06-20 15:41:16,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:16,807 INFO L85 PathProgramCache]: Analyzing trace with hash -871299956, now seen corresponding path program 8 times [2024-06-20 15:41:16,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:16,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693863578] [2024-06-20 15:41:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:17,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:17,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693863578] [2024-06-20 15:41:17,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693863578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:17,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:17,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:17,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201786589] [2024-06-20 15:41:17,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:17,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:17,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:17,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:17,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:17,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:17,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 135 transitions, 1275 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:17,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:17,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:17,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:18,166 INFO L124 PetriNetUnfolderBase]: 331/609 cut-off events. [2024-06-20 15:41:18,166 INFO L125 PetriNetUnfolderBase]: For 26795/26795 co-relation queries the response was YES. [2024-06-20 15:41:18,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4260 conditions, 609 events. 331/609 cut-off events. For 26795/26795 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2736 event pairs, 44 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 4190. Up to 544 conditions per place. [2024-06-20 15:41:18,170 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 17 changer transitions 0/146 dead transitions. [2024-06-20 15:41:18,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 146 transitions, 1627 flow [2024-06-20 15:41:18,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 15:41:18,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-20 15:41:18,171 INFO L175 Difference]: Start difference. First operand has 149 places, 135 transitions, 1275 flow. Second operand 9 states and 107 transitions. [2024-06-20 15:41:18,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 146 transitions, 1627 flow [2024-06-20 15:41:18,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 146 transitions, 1592 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:18,203 INFO L231 Difference]: Finished difference. Result has 151 places, 137 transitions, 1324 flow [2024-06-20 15:41:18,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1324, PETRI_PLACES=151, PETRI_TRANSITIONS=137} [2024-06-20 15:41:18,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-20 15:41:18,204 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 137 transitions, 1324 flow [2024-06-20 15:41:18,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:18,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:18,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:18,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 15:41:18,205 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)] === [2024-06-20 15:41:18,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash -880504166, now seen corresponding path program 9 times [2024-06-20 15:41:18,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:18,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106468066] [2024-06-20 15:41:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:19,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:19,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106468066] [2024-06-20 15:41:19,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106468066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:19,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:19,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:19,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440222036] [2024-06-20 15:41:19,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:19,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:19,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:19,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:19,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:19,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:19,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 137 transitions, 1324 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:19,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:19,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:19,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:19,402 INFO L124 PetriNetUnfolderBase]: 337/619 cut-off events. [2024-06-20 15:41:19,402 INFO L125 PetriNetUnfolderBase]: For 28457/28457 co-relation queries the response was YES. [2024-06-20 15:41:19,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4411 conditions, 619 events. 337/619 cut-off events. For 28457/28457 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2796 event pairs, 45 based on Foata normal form. 2/620 useless extension candidates. Maximal degree in co-relation 4340. Up to 342 conditions per place. [2024-06-20 15:41:19,406 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 74 changer transitions 0/156 dead transitions. [2024-06-20 15:41:19,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 156 transitions, 1970 flow [2024-06-20 15:41:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-20 15:41:19,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-20 15:41:19,412 INFO L175 Difference]: Start difference. First operand has 151 places, 137 transitions, 1324 flow. Second operand 9 states and 121 transitions. [2024-06-20 15:41:19,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 156 transitions, 1970 flow [2024-06-20 15:41:19,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 156 transitions, 1906 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:19,448 INFO L231 Difference]: Finished difference. Result has 154 places, 141 transitions, 1517 flow [2024-06-20 15:41:19,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1517, PETRI_PLACES=154, PETRI_TRANSITIONS=141} [2024-06-20 15:41:19,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-20 15:41:19,448 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 141 transitions, 1517 flow [2024-06-20 15:41:19,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:19,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:19,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:19,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 15:41:19,449 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)] === [2024-06-20 15:41:19,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1449583710, now seen corresponding path program 10 times [2024-06-20 15:41:19,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:19,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602870512] [2024-06-20 15:41:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:19,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:20,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602870512] [2024-06-20 15:41:20,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602870512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:20,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355269337] [2024-06-20 15:41:20,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:20,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:20,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:20,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:20,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:20,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 141 transitions, 1517 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:20,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:20,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:20,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:20,770 INFO L124 PetriNetUnfolderBase]: 340/624 cut-off events. [2024-06-20 15:41:20,771 INFO L125 PetriNetUnfolderBase]: For 29403/29403 co-relation queries the response was YES. [2024-06-20 15:41:20,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 624 events. 340/624 cut-off events. For 29403/29403 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2816 event pairs, 43 based on Foata normal form. 1/624 useless extension candidates. Maximal degree in co-relation 4577. Up to 393 conditions per place. [2024-06-20 15:41:20,774 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 62 changer transitions 0/169 dead transitions. [2024-06-20 15:41:20,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 169 transitions, 2209 flow [2024-06-20 15:41:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-20 15:41:20,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-20 15:41:20,775 INFO L175 Difference]: Start difference. First operand has 154 places, 141 transitions, 1517 flow. Second operand 9 states and 118 transitions. [2024-06-20 15:41:20,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 169 transitions, 2209 flow [2024-06-20 15:41:20,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 169 transitions, 2007 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:20,816 INFO L231 Difference]: Finished difference. Result has 160 places, 156 transitions, 1712 flow [2024-06-20 15:41:20,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1712, PETRI_PLACES=160, PETRI_TRANSITIONS=156} [2024-06-20 15:41:20,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-20 15:41:20,817 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 1712 flow [2024-06-20 15:41:20,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:20,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:20,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:20,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 15:41:20,817 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)] === [2024-06-20 15:41:20,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash 666145885, now seen corresponding path program 1 times [2024-06-20 15:41:20,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:20,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145471307] [2024-06-20 15:41:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:20,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:21,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145471307] [2024-06-20 15:41:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145471307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:21,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:21,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:41:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878720287] [2024-06-20 15:41:21,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:21,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:41:21,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:41:21,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:41:21,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:21,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 156 transitions, 1712 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:21,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:21,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:21,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:21,851 INFO L124 PetriNetUnfolderBase]: 353/651 cut-off events. [2024-06-20 15:41:21,851 INFO L125 PetriNetUnfolderBase]: For 31576/31576 co-relation queries the response was YES. [2024-06-20 15:41:21,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 651 events. 353/651 cut-off events. For 31576/31576 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3018 event pairs, 39 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 4796. Up to 551 conditions per place. [2024-06-20 15:41:21,855 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-20 15:41:21,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 176 transitions, 2148 flow [2024-06-20 15:41:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-20 15:41:21,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-20 15:41:21,856 INFO L175 Difference]: Start difference. First operand has 160 places, 156 transitions, 1712 flow. Second operand 9 states and 115 transitions. [2024-06-20 15:41:21,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 176 transitions, 2148 flow [2024-06-20 15:41:21,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 176 transitions, 2069 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-20 15:41:21,902 INFO L231 Difference]: Finished difference. Result has 168 places, 162 transitions, 1747 flow [2024-06-20 15:41:21,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1747, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2024-06-20 15:41:21,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-20 15:41:21,903 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 1747 flow [2024-06-20 15:41:21,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:21,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:21,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:21,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 15:41:21,903 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)] === [2024-06-20 15:41:21,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash -645499151, now seen corresponding path program 2 times [2024-06-20 15:41:21,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:21,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345945015] [2024-06-20 15:41:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:21,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:22,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345945015] [2024-06-20 15:41:22,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345945015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:22,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:22,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:22,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457839758] [2024-06-20 15:41:22,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:22,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:22,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:22,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:22,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:22,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:22,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 1747 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:22,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:22,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:22,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:23,095 INFO L124 PetriNetUnfolderBase]: 357/659 cut-off events. [2024-06-20 15:41:23,095 INFO L125 PetriNetUnfolderBase]: For 32807/32807 co-relation queries the response was YES. [2024-06-20 15:41:23,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 659 events. 357/659 cut-off events. For 32807/32807 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3065 event pairs, 38 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4873. Up to 566 conditions per place. [2024-06-20 15:41:23,100 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 150 selfloop transitions, 25 changer transitions 0/178 dead transitions. [2024-06-20 15:41:23,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 178 transitions, 2155 flow [2024-06-20 15:41:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 15:41:23,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 15:41:23,101 INFO L175 Difference]: Start difference. First operand has 168 places, 162 transitions, 1747 flow. Second operand 9 states and 113 transitions. [2024-06-20 15:41:23,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 178 transitions, 2155 flow [2024-06-20 15:41:23,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 178 transitions, 2115 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-20 15:41:23,156 INFO L231 Difference]: Finished difference. Result has 174 places, 163 transitions, 1783 flow [2024-06-20 15:41:23,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1783, PETRI_PLACES=174, PETRI_TRANSITIONS=163} [2024-06-20 15:41:23,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-20 15:41:23,157 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 163 transitions, 1783 flow [2024-06-20 15:41:23,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:23,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:23,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:23,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 15:41:23,157 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)] === [2024-06-20 15:41:23,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:23,157 INFO L85 PathProgramCache]: Analyzing trace with hash -640435855, now seen corresponding path program 3 times [2024-06-20 15:41:23,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:23,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144737421] [2024-06-20 15:41:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:23,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:23,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:23,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144737421] [2024-06-20 15:41:23,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144737421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:23,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:23,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164942044] [2024-06-20 15:41:23,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:23,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:23,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:24,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:24,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 163 transitions, 1783 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:24,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:24,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:24,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:24,368 INFO L124 PetriNetUnfolderBase]: 361/667 cut-off events. [2024-06-20 15:41:24,368 INFO L125 PetriNetUnfolderBase]: For 34311/34311 co-relation queries the response was YES. [2024-06-20 15:41:24,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5036 conditions, 667 events. 361/667 cut-off events. For 34311/34311 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3124 event pairs, 40 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 4952. Up to 574 conditions per place. [2024-06-20 15:41:24,373 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 150 selfloop transitions, 28 changer transitions 0/181 dead transitions. [2024-06-20 15:41:24,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 181 transitions, 2239 flow [2024-06-20 15:41:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-20 15:41:24,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-20 15:41:24,374 INFO L175 Difference]: Start difference. First operand has 174 places, 163 transitions, 1783 flow. Second operand 9 states and 110 transitions. [2024-06-20 15:41:24,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 181 transitions, 2239 flow [2024-06-20 15:41:24,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 181 transitions, 2173 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:24,436 INFO L231 Difference]: Finished difference. Result has 177 places, 168 transitions, 1858 flow [2024-06-20 15:41:24,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1858, PETRI_PLACES=177, PETRI_TRANSITIONS=168} [2024-06-20 15:41:24,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-20 15:41:24,436 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 168 transitions, 1858 flow [2024-06-20 15:41:24,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:24,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:24,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:24,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 15:41:24,437 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)] === [2024-06-20 15:41:24,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:24,437 INFO L85 PathProgramCache]: Analyzing trace with hash -755722065, now seen corresponding path program 1 times [2024-06-20 15:41:24,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:24,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290723951] [2024-06-20 15:41:24,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:24,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:25,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:25,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290723951] [2024-06-20 15:41:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290723951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:25,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:25,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143167258] [2024-06-20 15:41:25,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:25,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:25,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:25,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:25,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:25,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:25,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 168 transitions, 1858 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:25,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:25,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:25,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:25,998 INFO L124 PetriNetUnfolderBase]: 359/664 cut-off events. [2024-06-20 15:41:25,998 INFO L125 PetriNetUnfolderBase]: For 33529/33529 co-relation queries the response was YES. [2024-06-20 15:41:26,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 664 events. 359/664 cut-off events. For 33529/33529 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3124 event pairs, 34 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 4900. Up to 571 conditions per place. [2024-06-20 15:41:26,003 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 28 changer transitions 0/184 dead transitions. [2024-06-20 15:41:26,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 184 transitions, 2269 flow [2024-06-20 15:41:26,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:41:26,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:41:26,004 INFO L175 Difference]: Start difference. First operand has 177 places, 168 transitions, 1858 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:41:26,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 184 transitions, 2269 flow [2024-06-20 15:41:26,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 184 transitions, 2195 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:26,070 INFO L231 Difference]: Finished difference. Result has 182 places, 169 transitions, 1858 flow [2024-06-20 15:41:26,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=182, PETRI_TRANSITIONS=169} [2024-06-20 15:41:26,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-20 15:41:26,071 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 169 transitions, 1858 flow [2024-06-20 15:41:26,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:26,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:26,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:26,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 15:41:26,071 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)] === [2024-06-20 15:41:26,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash -640257915, now seen corresponding path program 2 times [2024-06-20 15:41:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:26,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591152620] [2024-06-20 15:41:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:26,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:27,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:27,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591152620] [2024-06-20 15:41:27,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591152620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:27,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:27,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:27,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299665484] [2024-06-20 15:41:27,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:27,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:27,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:27,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 169 transitions, 1858 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:27,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:27,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:27,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:27,868 INFO L124 PetriNetUnfolderBase]: 367/679 cut-off events. [2024-06-20 15:41:27,868 INFO L125 PetriNetUnfolderBase]: For 36194/36194 co-relation queries the response was YES. [2024-06-20 15:41:27,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5163 conditions, 679 events. 367/679 cut-off events. For 36194/36194 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3203 event pairs, 38 based on Foata normal form. 1/679 useless extension candidates. Maximal degree in co-relation 5076. Up to 564 conditions per place. [2024-06-20 15:41:27,872 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 37 changer transitions 0/188 dead transitions. [2024-06-20 15:41:27,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 188 transitions, 2461 flow [2024-06-20 15:41:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:41:27,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:41:27,877 INFO L175 Difference]: Start difference. First operand has 182 places, 169 transitions, 1858 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:41:27,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 188 transitions, 2461 flow [2024-06-20 15:41:27,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 188 transitions, 2373 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:27,938 INFO L231 Difference]: Finished difference. Result has 185 places, 174 transitions, 1967 flow [2024-06-20 15:41:27,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1967, PETRI_PLACES=185, PETRI_TRANSITIONS=174} [2024-06-20 15:41:27,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-20 15:41:27,939 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 174 transitions, 1967 flow [2024-06-20 15:41:27,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:27,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:27,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:27,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 15:41:27,940 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)] === [2024-06-20 15:41:27,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash -640251405, now seen corresponding path program 3 times [2024-06-20 15:41:27,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:27,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449455156] [2024-06-20 15:41:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:27,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:29,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449455156] [2024-06-20 15:41:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449455156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:29,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:29,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275629712] [2024-06-20 15:41:29,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:29,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:29,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:29,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:29,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:29,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 174 transitions, 1967 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:29,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:29,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:29,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:29,484 INFO L124 PetriNetUnfolderBase]: 365/676 cut-off events. [2024-06-20 15:41:29,485 INFO L125 PetriNetUnfolderBase]: For 36826/36826 co-relation queries the response was YES. [2024-06-20 15:41:29,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5146 conditions, 676 events. 365/676 cut-off events. For 36826/36826 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3183 event pairs, 36 based on Foata normal form. 1/676 useless extension candidates. Maximal degree in co-relation 5057. Up to 562 conditions per place. [2024-06-20 15:41:29,490 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 37 changer transitions 0/187 dead transitions. [2024-06-20 15:41:29,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 187 transitions, 2367 flow [2024-06-20 15:41:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:41:29,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:41:29,491 INFO L175 Difference]: Start difference. First operand has 185 places, 174 transitions, 1967 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:41:29,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 187 transitions, 2367 flow [2024-06-20 15:41:29,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 187 transitions, 2248 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:29,565 INFO L231 Difference]: Finished difference. Result has 190 places, 174 transitions, 1927 flow [2024-06-20 15:41:29,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1927, PETRI_PLACES=190, PETRI_TRANSITIONS=174} [2024-06-20 15:41:29,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-20 15:41:29,566 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 174 transitions, 1927 flow [2024-06-20 15:41:29,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:29,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:29,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:29,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 15:41:29,567 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)] === [2024-06-20 15:41:29,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash -474796721, now seen corresponding path program 4 times [2024-06-20 15:41:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:29,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489992298] [2024-06-20 15:41:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:30,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:30,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489992298] [2024-06-20 15:41:30,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489992298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:30,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:30,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:30,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010459777] [2024-06-20 15:41:30,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:30,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:30,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:30,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:30,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:30,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 174 transitions, 1927 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:30,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:30,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:30,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:30,823 INFO L124 PetriNetUnfolderBase]: 369/684 cut-off events. [2024-06-20 15:41:30,823 INFO L125 PetriNetUnfolderBase]: For 39089/39089 co-relation queries the response was YES. [2024-06-20 15:41:30,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 684 events. 369/684 cut-off events. For 39089/39089 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3237 event pairs, 38 based on Foata normal form. 2/685 useless extension candidates. Maximal degree in co-relation 5115. Up to 582 conditions per place. [2024-06-20 15:41:30,827 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 154 selfloop transitions, 30 changer transitions 0/187 dead transitions. [2024-06-20 15:41:30,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 187 transitions, 2358 flow [2024-06-20 15:41:30,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-20 15:41:30,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-20 15:41:30,828 INFO L175 Difference]: Start difference. First operand has 190 places, 174 transitions, 1927 flow. Second operand 9 states and 110 transitions. [2024-06-20 15:41:30,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 187 transitions, 2358 flow [2024-06-20 15:41:30,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 187 transitions, 2284 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:30,893 INFO L231 Difference]: Finished difference. Result has 191 places, 176 transitions, 1956 flow [2024-06-20 15:41:30,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1956, PETRI_PLACES=191, PETRI_TRANSITIONS=176} [2024-06-20 15:41:30,893 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-20 15:41:30,893 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 176 transitions, 1956 flow [2024-06-20 15:41:30,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:30,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:30,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:30,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 15:41:30,894 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)] === [2024-06-20 15:41:30,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash -474618781, now seen corresponding path program 4 times [2024-06-20 15:41:30,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:30,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541177978] [2024-06-20 15:41:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:30,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:32,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:32,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541177978] [2024-06-20 15:41:32,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541177978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:32,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052213324] [2024-06-20 15:41:32,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:32,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:32,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:32,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:32,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:32,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:32,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 176 transitions, 1956 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:32,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:32,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:32,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:32,860 INFO L124 PetriNetUnfolderBase]: 377/701 cut-off events. [2024-06-20 15:41:32,860 INFO L125 PetriNetUnfolderBase]: For 41188/41188 co-relation queries the response was YES. [2024-06-20 15:41:32,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 701 events. 377/701 cut-off events. For 41188/41188 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3374 event pairs, 38 based on Foata normal form. 1/701 useless extension candidates. Maximal degree in co-relation 5324. Up to 579 conditions per place. [2024-06-20 15:41:32,865 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 39 changer transitions 0/192 dead transitions. [2024-06-20 15:41:32,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 192 transitions, 2562 flow [2024-06-20 15:41:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:41:32,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:41:32,866 INFO L175 Difference]: Start difference. First operand has 191 places, 176 transitions, 1956 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:41:32,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 192 transitions, 2562 flow [2024-06-20 15:41:32,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 192 transitions, 2455 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:32,947 INFO L231 Difference]: Finished difference. Result has 193 places, 180 transitions, 2032 flow [2024-06-20 15:41:32,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2032, PETRI_PLACES=193, PETRI_TRANSITIONS=180} [2024-06-20 15:41:32,948 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-20 15:41:32,948 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 180 transitions, 2032 flow [2024-06-20 15:41:32,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:32,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:32,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:32,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 15:41:32,948 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)] === [2024-06-20 15:41:32,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash -468356161, now seen corresponding path program 5 times [2024-06-20 15:41:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:32,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354126132] [2024-06-20 15:41:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:32,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:34,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:34,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354126132] [2024-06-20 15:41:34,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354126132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:34,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:34,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:34,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309753514] [2024-06-20 15:41:34,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:34,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:34,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:34,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:34,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:34,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 180 transitions, 2032 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:34,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:34,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:34,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:35,135 INFO L124 PetriNetUnfolderBase]: 390/726 cut-off events. [2024-06-20 15:41:35,135 INFO L125 PetriNetUnfolderBase]: For 46424/46424 co-relation queries the response was YES. [2024-06-20 15:41:35,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 726 events. 390/726 cut-off events. For 46424/46424 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3524 event pairs, 36 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 5673. Up to 542 conditions per place. [2024-06-20 15:41:35,140 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 143 selfloop transitions, 58 changer transitions 0/204 dead transitions. [2024-06-20 15:41:35,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 204 transitions, 2995 flow [2024-06-20 15:41:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 15:41:35,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-20 15:41:35,142 INFO L175 Difference]: Start difference. First operand has 193 places, 180 transitions, 2032 flow. Second operand 10 states and 129 transitions. [2024-06-20 15:41:35,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 204 transitions, 2995 flow [2024-06-20 15:41:35,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 204 transitions, 2891 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:35,234 INFO L231 Difference]: Finished difference. Result has 198 places, 190 transitions, 2296 flow [2024-06-20 15:41:35,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2296, PETRI_PLACES=198, PETRI_TRANSITIONS=190} [2024-06-20 15:41:35,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-20 15:41:35,234 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 190 transitions, 2296 flow [2024-06-20 15:41:35,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:35,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:35,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:35,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 15:41:35,235 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)] === [2024-06-20 15:41:35,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash -474612271, now seen corresponding path program 6 times [2024-06-20 15:41:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:35,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949406259] [2024-06-20 15:41:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:36,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:36,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949406259] [2024-06-20 15:41:36,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949406259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:36,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:36,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:36,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205838975] [2024-06-20 15:41:36,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:36,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:36,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:36,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:36,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:36,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:36,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 190 transitions, 2296 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:36,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:36,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:36,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:36,960 INFO L124 PetriNetUnfolderBase]: 388/723 cut-off events. [2024-06-20 15:41:36,960 INFO L125 PetriNetUnfolderBase]: For 46565/46565 co-relation queries the response was YES. [2024-06-20 15:41:36,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5830 conditions, 723 events. 388/723 cut-off events. For 46565/46565 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3530 event pairs, 36 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 5735. Up to 598 conditions per place. [2024-06-20 15:41:36,967 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 39 changer transitions 0/201 dead transitions. [2024-06-20 15:41:36,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 201 transitions, 2718 flow [2024-06-20 15:41:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:41:36,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:41:36,968 INFO L175 Difference]: Start difference. First operand has 198 places, 190 transitions, 2296 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:41:36,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 201 transitions, 2718 flow [2024-06-20 15:41:37,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 201 transitions, 2507 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:37,061 INFO L231 Difference]: Finished difference. Result has 202 places, 190 transitions, 2168 flow [2024-06-20 15:41:37,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2168, PETRI_PLACES=202, PETRI_TRANSITIONS=190} [2024-06-20 15:41:37,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-20 15:41:37,061 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 190 transitions, 2168 flow [2024-06-20 15:41:37,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:37,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:37,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:37,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 15:41:37,063 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)] === [2024-06-20 15:41:37,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1678417207, now seen corresponding path program 7 times [2024-06-20 15:41:37,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:37,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094640931] [2024-06-20 15:41:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:37,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:38,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:38,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094640931] [2024-06-20 15:41:38,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094640931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:38,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:38,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:38,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508124289] [2024-06-20 15:41:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:38,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:38,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:38,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 190 transitions, 2168 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:38,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:38,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:38,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:39,019 INFO L124 PetriNetUnfolderBase]: 386/720 cut-off events. [2024-06-20 15:41:39,019 INFO L125 PetriNetUnfolderBase]: For 44818/44818 co-relation queries the response was YES. [2024-06-20 15:41:39,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5569 conditions, 720 events. 386/720 cut-off events. For 44818/44818 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3495 event pairs, 36 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 5474. Up to 538 conditions per place. [2024-06-20 15:41:39,025 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 59 changer transitions 0/202 dead transitions. [2024-06-20 15:41:39,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 202 transitions, 2704 flow [2024-06-20 15:41:39,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:39,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:41:39,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-20 15:41:39,026 INFO L175 Difference]: Start difference. First operand has 202 places, 190 transitions, 2168 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:41:39,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 202 transitions, 2704 flow [2024-06-20 15:41:39,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 202 transitions, 2589 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:39,107 INFO L231 Difference]: Finished difference. Result has 203 places, 190 transitions, 2176 flow [2024-06-20 15:41:39,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2176, PETRI_PLACES=203, PETRI_TRANSITIONS=190} [2024-06-20 15:41:39,107 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-20 15:41:39,107 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 190 transitions, 2176 flow [2024-06-20 15:41:39,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:39,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:39,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:39,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 15:41:39,108 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)] === [2024-06-20 15:41:39,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash 434293347, now seen corresponding path program 1 times [2024-06-20 15:41:39,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:39,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726541992] [2024-06-20 15:41:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:39,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:40,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:40,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726541992] [2024-06-20 15:41:40,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726541992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:40,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:40,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:40,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037487625] [2024-06-20 15:41:40,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:40,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:40,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:40,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:40,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:40,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 190 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:40,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:40,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:40,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:40,714 INFO L124 PetriNetUnfolderBase]: 390/728 cut-off events. [2024-06-20 15:41:40,715 INFO L125 PetriNetUnfolderBase]: For 48037/48037 co-relation queries the response was YES. [2024-06-20 15:41:40,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5662 conditions, 728 events. 390/728 cut-off events. For 48037/48037 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3566 event pairs, 36 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 5566. Up to 649 conditions per place. [2024-06-20 15:41:40,720 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 181 selfloop transitions, 19 changer transitions 0/203 dead transitions. [2024-06-20 15:41:40,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 203 transitions, 2626 flow [2024-06-20 15:41:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 15:41:40,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-20 15:41:40,722 INFO L175 Difference]: Start difference. First operand has 203 places, 190 transitions, 2176 flow. Second operand 10 states and 117 transitions. [2024-06-20 15:41:40,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 203 transitions, 2626 flow [2024-06-20 15:41:40,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 203 transitions, 2513 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:40,812 INFO L231 Difference]: Finished difference. Result has 207 places, 191 transitions, 2129 flow [2024-06-20 15:41:40,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2129, PETRI_PLACES=207, PETRI_TRANSITIONS=191} [2024-06-20 15:41:40,812 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-20 15:41:40,812 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 191 transitions, 2129 flow [2024-06-20 15:41:40,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:40,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:40,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:40,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 15:41:40,813 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)] === [2024-06-20 15:41:40,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 427797917, now seen corresponding path program 1 times [2024-06-20 15:41:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:40,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363462394] [2024-06-20 15:41:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:40,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:42,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:42,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363462394] [2024-06-20 15:41:42,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363462394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:42,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:42,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:42,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301297350] [2024-06-20 15:41:42,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:42,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:42,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:42,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:42,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:42,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 191 transitions, 2129 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:42,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:42,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:42,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:42,624 INFO L124 PetriNetUnfolderBase]: 386/722 cut-off events. [2024-06-20 15:41:42,625 INFO L125 PetriNetUnfolderBase]: For 46078/46078 co-relation queries the response was YES. [2024-06-20 15:41:42,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5445 conditions, 722 events. 386/722 cut-off events. For 46078/46078 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3536 event pairs, 36 based on Foata normal form. 2/723 useless extension candidates. Maximal degree in co-relation 5348. Up to 600 conditions per place. [2024-06-20 15:41:42,631 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 37 changer transitions 0/202 dead transitions. [2024-06-20 15:41:42,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 202 transitions, 2553 flow [2024-06-20 15:41:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:41:42,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:41:42,632 INFO L175 Difference]: Start difference. First operand has 207 places, 191 transitions, 2129 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:41:42,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 202 transitions, 2553 flow [2024-06-20 15:41:42,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 202 transitions, 2396 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-20 15:41:42,716 INFO L231 Difference]: Finished difference. Result has 207 places, 191 transitions, 2052 flow [2024-06-20 15:41:42,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2052, PETRI_PLACES=207, PETRI_TRANSITIONS=191} [2024-06-20 15:41:42,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-20 15:41:42,717 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 191 transitions, 2052 flow [2024-06-20 15:41:42,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:42,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:42,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:42,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 15:41:42,717 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)] === [2024-06-20 15:41:42,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:42,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1678654357, now seen corresponding path program 8 times [2024-06-20 15:41:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711055409] [2024-06-20 15:41:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:43,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711055409] [2024-06-20 15:41:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711055409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:43,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:43,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:43,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926051320] [2024-06-20 15:41:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:43,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:43,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:44,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:44,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 191 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:44,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:44,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:44,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:44,369 INFO L124 PetriNetUnfolderBase]: 384/719 cut-off events. [2024-06-20 15:41:44,369 INFO L125 PetriNetUnfolderBase]: For 43354/43354 co-relation queries the response was YES. [2024-06-20 15:41:44,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 719 events. 384/719 cut-off events. For 43354/43354 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3523 event pairs, 36 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 5193. Up to 538 conditions per place. [2024-06-20 15:41:44,375 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 137 selfloop transitions, 62 changer transitions 0/202 dead transitions. [2024-06-20 15:41:44,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 202 transitions, 2476 flow [2024-06-20 15:41:44,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:41:44,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:41:44,376 INFO L175 Difference]: Start difference. First operand has 207 places, 191 transitions, 2052 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:41:44,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 202 transitions, 2476 flow [2024-06-20 15:41:44,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 202 transitions, 2319 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-20 15:41:44,477 INFO L231 Difference]: Finished difference. Result has 207 places, 191 transitions, 2024 flow [2024-06-20 15:41:44,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2024, PETRI_PLACES=207, PETRI_TRANSITIONS=191} [2024-06-20 15:41:44,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-20 15:41:44,478 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 191 transitions, 2024 flow [2024-06-20 15:41:44,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:44,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:44,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:44,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 15:41:44,478 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)] === [2024-06-20 15:41:44,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2079230321, now seen corresponding path program 5 times [2024-06-20 15:41:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042190271] [2024-06-20 15:41:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:44,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:45,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042190271] [2024-06-20 15:41:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042190271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:45,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:45,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:45,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725355775] [2024-06-20 15:41:45,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:45,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:45,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:45,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:45,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:45,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:45,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 191 transitions, 2024 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:45,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:45,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:45,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:45,689 INFO L124 PetriNetUnfolderBase]: 388/727 cut-off events. [2024-06-20 15:41:45,689 INFO L125 PetriNetUnfolderBase]: For 46437/46437 co-relation queries the response was YES. [2024-06-20 15:41:45,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5361 conditions, 727 events. 388/727 cut-off events. For 46437/46437 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3575 event pairs, 43 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 5264. Up to 583 conditions per place. [2024-06-20 15:41:45,697 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 163 selfloop transitions, 37 changer transitions 0/203 dead transitions. [2024-06-20 15:41:45,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 203 transitions, 2509 flow [2024-06-20 15:41:45,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:45,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-20 15:41:45,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-20 15:41:45,698 INFO L175 Difference]: Start difference. First operand has 207 places, 191 transitions, 2024 flow. Second operand 9 states and 110 transitions. [2024-06-20 15:41:45,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 203 transitions, 2509 flow [2024-06-20 15:41:45,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 203 transitions, 2372 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:45,799 INFO L231 Difference]: Finished difference. Result has 208 places, 194 transitions, 2037 flow [2024-06-20 15:41:45,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2037, PETRI_PLACES=208, PETRI_TRANSITIONS=194} [2024-06-20 15:41:45,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-20 15:41:45,800 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 194 transitions, 2037 flow [2024-06-20 15:41:45,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:45,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:45,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:45,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 15:41:45,800 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)] === [2024-06-20 15:41:45,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:45,801 INFO L85 PathProgramCache]: Analyzing trace with hash 283978847, now seen corresponding path program 9 times [2024-06-20 15:41:45,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:45,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459166351] [2024-06-20 15:41:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:45,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:47,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:47,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459166351] [2024-06-20 15:41:47,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459166351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:47,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:47,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859207657] [2024-06-20 15:41:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:47,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:47,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 194 transitions, 2037 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:47,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:47,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:47,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:47,549 INFO L124 PetriNetUnfolderBase]: 406/761 cut-off events. [2024-06-20 15:41:47,549 INFO L125 PetriNetUnfolderBase]: For 52707/52707 co-relation queries the response was YES. [2024-06-20 15:41:47,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5825 conditions, 761 events. 406/761 cut-off events. For 52707/52707 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3796 event pairs, 40 based on Foata normal form. 1/761 useless extension candidates. Maximal degree in co-relation 5726. Up to 590 conditions per place. [2024-06-20 15:41:47,555 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 55 changer transitions 0/217 dead transitions. [2024-06-20 15:41:47,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 217 transitions, 3083 flow [2024-06-20 15:41:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:41:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:41:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:41:47,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-20 15:41:47,556 INFO L175 Difference]: Start difference. First operand has 208 places, 194 transitions, 2037 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:41:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 217 transitions, 3083 flow [2024-06-20 15:41:47,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 217 transitions, 2961 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:47,686 INFO L231 Difference]: Finished difference. Result has 214 places, 205 transitions, 2280 flow [2024-06-20 15:41:47,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2280, PETRI_PLACES=214, PETRI_TRANSITIONS=205} [2024-06-20 15:41:47,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-20 15:41:47,686 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 205 transitions, 2280 flow [2024-06-20 15:41:47,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:47,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:47,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:47,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 15:41:47,687 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)] === [2024-06-20 15:41:47,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:47,687 INFO L85 PathProgramCache]: Analyzing trace with hash 913179697, now seen corresponding path program 2 times [2024-06-20 15:41:47,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:47,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437598930] [2024-06-20 15:41:47,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:47,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:49,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:49,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437598930] [2024-06-20 15:41:49,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437598930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:49,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:49,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:49,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738935091] [2024-06-20 15:41:49,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:49,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:49,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:49,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:49,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:49,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 205 transitions, 2280 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:49,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:49,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:49,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:49,658 INFO L124 PetriNetUnfolderBase]: 410/768 cut-off events. [2024-06-20 15:41:49,658 INFO L125 PetriNetUnfolderBase]: For 56449/56449 co-relation queries the response was YES. [2024-06-20 15:41:49,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5929 conditions, 768 events. 410/768 cut-off events. For 56449/56449 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3821 event pairs, 44 based on Foata normal form. 2/769 useless extension candidates. Maximal degree in co-relation 5828. Up to 690 conditions per place. [2024-06-20 15:41:49,665 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 196 selfloop transitions, 18 changer transitions 0/217 dead transitions. [2024-06-20 15:41:49,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 217 transitions, 2756 flow [2024-06-20 15:41:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:41:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:41:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 15:41:49,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 15:41:49,666 INFO L175 Difference]: Start difference. First operand has 214 places, 205 transitions, 2280 flow. Second operand 11 states and 124 transitions. [2024-06-20 15:41:49,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 217 transitions, 2756 flow [2024-06-20 15:41:49,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 217 transitions, 2621 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:49,811 INFO L231 Difference]: Finished difference. Result has 220 places, 206 transitions, 2211 flow [2024-06-20 15:41:49,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2211, PETRI_PLACES=220, PETRI_TRANSITIONS=206} [2024-06-20 15:41:49,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-20 15:41:49,811 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 206 transitions, 2211 flow [2024-06-20 15:41:49,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:49,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:49,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:49,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 15:41:49,812 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)] === [2024-06-20 15:41:49,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1230009097, now seen corresponding path program 3 times [2024-06-20 15:41:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:49,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863324411] [2024-06-20 15:41:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:49,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:51,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:51,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863324411] [2024-06-20 15:41:51,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863324411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:51,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:51,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:51,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251477524] [2024-06-20 15:41:51,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:51,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:51,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:51,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:51,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:51,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 206 transitions, 2211 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:51,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:51,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:51,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:51,750 INFO L124 PetriNetUnfolderBase]: 414/776 cut-off events. [2024-06-20 15:41:51,751 INFO L125 PetriNetUnfolderBase]: For 57332/57332 co-relation queries the response was YES. [2024-06-20 15:41:51,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 776 events. 414/776 cut-off events. For 57332/57332 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3877 event pairs, 42 based on Foata normal form. 2/777 useless extension candidates. Maximal degree in co-relation 5839. Up to 684 conditions per place. [2024-06-20 15:41:51,757 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 197 selfloop transitions, 19 changer transitions 0/219 dead transitions. [2024-06-20 15:41:51,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 219 transitions, 2695 flow [2024-06-20 15:41:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:41:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:41:51,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-20 15:41:51,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-20 15:41:51,760 INFO L175 Difference]: Start difference. First operand has 220 places, 206 transitions, 2211 flow. Second operand 11 states and 125 transitions. [2024-06-20 15:41:51,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 219 transitions, 2695 flow [2024-06-20 15:41:51,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 219 transitions, 2636 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:51,904 INFO L231 Difference]: Finished difference. Result has 222 places, 207 transitions, 2222 flow [2024-06-20 15:41:51,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2222, PETRI_PLACES=222, PETRI_TRANSITIONS=207} [2024-06-20 15:41:51,904 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-20 15:41:51,904 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 207 transitions, 2222 flow [2024-06-20 15:41:51,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:51,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:51,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:51,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 15:41:51,905 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)] === [2024-06-20 15:41:51,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:51,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2079408261, now seen corresponding path program 10 times [2024-06-20 15:41:51,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:51,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411599565] [2024-06-20 15:41:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:51,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411599565] [2024-06-20 15:41:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411599565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292190094] [2024-06-20 15:41:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:53,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:53,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:53,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 207 transitions, 2222 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:53,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:53,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:53,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:53,721 INFO L124 PetriNetUnfolderBase]: 417/784 cut-off events. [2024-06-20 15:41:53,721 INFO L125 PetriNetUnfolderBase]: For 57165/57165 co-relation queries the response was YES. [2024-06-20 15:41:53,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5996 conditions, 784 events. 417/784 cut-off events. For 57165/57165 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3968 event pairs, 40 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 5892. Up to 639 conditions per place. [2024-06-20 15:41:53,726 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 43 changer transitions 0/219 dead transitions. [2024-06-20 15:41:53,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 219 transitions, 2846 flow [2024-06-20 15:41:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:41:53,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:41:53,727 INFO L175 Difference]: Start difference. First operand has 222 places, 207 transitions, 2222 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:41:53,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 219 transitions, 2846 flow [2024-06-20 15:41:53,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 219 transitions, 2786 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:53,858 INFO L231 Difference]: Finished difference. Result has 223 places, 209 transitions, 2297 flow [2024-06-20 15:41:53,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2297, PETRI_PLACES=223, PETRI_TRANSITIONS=209} [2024-06-20 15:41:53,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-20 15:41:53,859 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 209 transitions, 2297 flow [2024-06-20 15:41:53,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:53,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:53,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:53,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 15:41:53,860 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)] === [2024-06-20 15:41:53,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:53,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1249883849, now seen corresponding path program 2 times [2024-06-20 15:41:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:53,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319196503] [2024-06-20 15:41:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:55,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:55,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319196503] [2024-06-20 15:41:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319196503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:55,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:55,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64911956] [2024-06-20 15:41:55,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:55,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:55,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:55,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 209 transitions, 2297 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:55,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:55,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:55,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:55,571 INFO L124 PetriNetUnfolderBase]: 413/778 cut-off events. [2024-06-20 15:41:55,571 INFO L125 PetriNetUnfolderBase]: For 56700/56700 co-relation queries the response was YES. [2024-06-20 15:41:55,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5855 conditions, 778 events. 413/778 cut-off events. For 56700/56700 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3934 event pairs, 40 based on Foata normal form. 2/779 useless extension candidates. Maximal degree in co-relation 5750. Up to 637 conditions per place. [2024-06-20 15:41:55,577 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 174 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-06-20 15:41:55,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 218 transitions, 2747 flow [2024-06-20 15:41:55,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:41:55,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:41:55,578 INFO L175 Difference]: Start difference. First operand has 223 places, 209 transitions, 2297 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:41:55,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 218 transitions, 2747 flow [2024-06-20 15:41:55,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 218 transitions, 2592 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:55,698 INFO L231 Difference]: Finished difference. Result has 226 places, 209 transitions, 2230 flow [2024-06-20 15:41:55,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2230, PETRI_PLACES=226, PETRI_TRANSITIONS=209} [2024-06-20 15:41:55,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-20 15:41:55,699 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 209 transitions, 2230 flow [2024-06-20 15:41:55,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:55,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:55,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:55,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 15:41:55,699 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)] === [2024-06-20 15:41:55,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:55,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1249883601, now seen corresponding path program 11 times [2024-06-20 15:41:55,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:55,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224177809] [2024-06-20 15:41:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:55,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:57,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:57,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224177809] [2024-06-20 15:41:57,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224177809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:57,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:57,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:57,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142013895] [2024-06-20 15:41:57,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:57,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:57,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:57,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:57,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:57,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 209 transitions, 2230 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:57,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:57,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:57,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:57,517 INFO L124 PetriNetUnfolderBase]: 411/775 cut-off events. [2024-06-20 15:41:57,517 INFO L125 PetriNetUnfolderBase]: For 53640/53640 co-relation queries the response was YES. [2024-06-20 15:41:57,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5716 conditions, 775 events. 411/775 cut-off events. For 53640/53640 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3919 event pairs, 40 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 5610. Up to 631 conditions per place. [2024-06-20 15:41:57,524 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 43 changer transitions 0/218 dead transitions. [2024-06-20 15:41:57,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 218 transitions, 2680 flow [2024-06-20 15:41:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 15:41:57,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 15:41:57,525 INFO L175 Difference]: Start difference. First operand has 226 places, 209 transitions, 2230 flow. Second operand 10 states and 122 transitions. [2024-06-20 15:41:57,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 218 transitions, 2680 flow [2024-06-20 15:41:57,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 218 transitions, 2538 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-20 15:41:57,669 INFO L231 Difference]: Finished difference. Result has 226 places, 209 transitions, 2179 flow [2024-06-20 15:41:57,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2179, PETRI_PLACES=226, PETRI_TRANSITIONS=209} [2024-06-20 15:41:57,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-20 15:41:57,669 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 209 transitions, 2179 flow [2024-06-20 15:41:57,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:57,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:57,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:57,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 15:41:57,670 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)] === [2024-06-20 15:41:57,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:57,670 INFO L85 PathProgramCache]: Analyzing trace with hash 903051439, now seen corresponding path program 12 times [2024-06-20 15:41:57,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:57,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466919056] [2024-06-20 15:41:57,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:57,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:59,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:59,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466919056] [2024-06-20 15:41:59,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466919056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:59,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:59,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476193471] [2024-06-20 15:41:59,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:59,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:59,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:59,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:59,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:41:59,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 209 transitions, 2179 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:59,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:59,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:41:59,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:59,501 INFO L124 PetriNetUnfolderBase]: 414/781 cut-off events. [2024-06-20 15:41:59,502 INFO L125 PetriNetUnfolderBase]: For 55333/55333 co-relation queries the response was YES. [2024-06-20 15:41:59,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5755 conditions, 781 events. 414/781 cut-off events. For 55333/55333 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3966 event pairs, 44 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 5648. Up to 707 conditions per place. [2024-06-20 15:41:59,508 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 17 changer transitions 0/220 dead transitions. [2024-06-20 15:41:59,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 220 transitions, 2685 flow [2024-06-20 15:41:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-20 15:41:59,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-20 15:41:59,509 INFO L175 Difference]: Start difference. First operand has 226 places, 209 transitions, 2179 flow. Second operand 10 states and 114 transitions. [2024-06-20 15:41:59,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 220 transitions, 2685 flow [2024-06-20 15:41:59,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 220 transitions, 2592 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:59,657 INFO L231 Difference]: Finished difference. Result has 227 places, 211 transitions, 2181 flow [2024-06-20 15:41:59,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2181, PETRI_PLACES=227, PETRI_TRANSITIONS=211} [2024-06-20 15:41:59,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-20 15:41:59,657 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 211 transitions, 2181 flow [2024-06-20 15:41:59,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:59,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:59,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:59,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 15:41:59,658 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)] === [2024-06-20 15:41:59,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash 617960187, now seen corresponding path program 3 times [2024-06-20 15:41:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:59,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859531825] [2024-06-20 15:41:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:59,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:01,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:01,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859531825] [2024-06-20 15:42:01,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859531825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:01,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:01,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:01,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023129407] [2024-06-20 15:42:01,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:01,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:01,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:01,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 211 transitions, 2181 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:01,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:01,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:01,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:01,995 INFO L124 PetriNetUnfolderBase]: 417/786 cut-off events. [2024-06-20 15:42:01,995 INFO L125 PetriNetUnfolderBase]: For 56913/56913 co-relation queries the response was YES. [2024-06-20 15:42:02,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5788 conditions, 786 events. 417/786 cut-off events. For 56913/56913 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4011 event pairs, 43 based on Foata normal form. 1/786 useless extension candidates. Maximal degree in co-relation 5680. Up to 520 conditions per place. [2024-06-20 15:42:02,003 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 84 changer transitions 0/223 dead transitions. [2024-06-20 15:42:02,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 223 transitions, 2817 flow [2024-06-20 15:42:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 15:42:02,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-20 15:42:02,004 INFO L175 Difference]: Start difference. First operand has 227 places, 211 transitions, 2181 flow. Second operand 10 states and 129 transitions. [2024-06-20 15:42:02,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 223 transitions, 2817 flow [2024-06-20 15:42:02,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 223 transitions, 2723 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:02,164 INFO L231 Difference]: Finished difference. Result has 228 places, 213 transitions, 2300 flow [2024-06-20 15:42:02,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2300, PETRI_PLACES=228, PETRI_TRANSITIONS=213} [2024-06-20 15:42:02,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-20 15:42:02,165 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 213 transitions, 2300 flow [2024-06-20 15:42:02,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:02,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:02,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:02,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 15:42:02,165 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)] === [2024-06-20 15:42:02,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1256370351, now seen corresponding path program 13 times [2024-06-20 15:42:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304184080] [2024-06-20 15:42:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:03,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:03,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304184080] [2024-06-20 15:42:03,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304184080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:03,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:03,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:03,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848733328] [2024-06-20 15:42:03,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:03,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:03,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:03,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:03,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:03,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 213 transitions, 2300 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:03,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:03,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:03,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:03,809 INFO L124 PetriNetUnfolderBase]: 428/807 cut-off events. [2024-06-20 15:42:03,809 INFO L125 PetriNetUnfolderBase]: For 65203/65203 co-relation queries the response was YES. [2024-06-20 15:42:03,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6208 conditions, 807 events. 428/807 cut-off events. For 65203/65203 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4104 event pairs, 36 based on Foata normal form. 2/808 useless extension candidates. Maximal degree in co-relation 6100. Up to 592 conditions per place. [2024-06-20 15:42:03,816 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 166 selfloop transitions, 61 changer transitions 0/230 dead transitions. [2024-06-20 15:42:03,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 230 transitions, 3230 flow [2024-06-20 15:42:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 15:42:03,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-20 15:42:03,817 INFO L175 Difference]: Start difference. First operand has 228 places, 213 transitions, 2300 flow. Second operand 10 states and 131 transitions. [2024-06-20 15:42:03,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 230 transitions, 3230 flow [2024-06-20 15:42:03,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 230 transitions, 3008 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:03,964 INFO L231 Difference]: Finished difference. Result has 230 places, 219 transitions, 2392 flow [2024-06-20 15:42:03,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2392, PETRI_PLACES=230, PETRI_TRANSITIONS=219} [2024-06-20 15:42:03,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-20 15:42:03,965 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 219 transitions, 2392 flow [2024-06-20 15:42:03,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:03,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:03,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:03,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 15:42:03,965 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)] === [2024-06-20 15:42:03,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash 617714419, now seen corresponding path program 14 times [2024-06-20 15:42:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:03,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374494629] [2024-06-20 15:42:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:03,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:05,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:05,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374494629] [2024-06-20 15:42:05,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374494629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:05,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:05,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:05,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773273604] [2024-06-20 15:42:05,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:05,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:05,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:05,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 219 transitions, 2392 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:05,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:05,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:05,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:05,790 INFO L124 PetriNetUnfolderBase]: 431/812 cut-off events. [2024-06-20 15:42:05,790 INFO L125 PetriNetUnfolderBase]: For 64117/64117 co-relation queries the response was YES. [2024-06-20 15:42:05,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6219 conditions, 812 events. 431/812 cut-off events. For 64117/64117 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4161 event pairs, 40 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 6111. Up to 517 conditions per place. [2024-06-20 15:42:05,797 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 97 changer transitions 0/235 dead transitions. [2024-06-20 15:42:05,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 235 transitions, 3277 flow [2024-06-20 15:42:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 15:42:05,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-20 15:42:05,798 INFO L175 Difference]: Start difference. First operand has 230 places, 219 transitions, 2392 flow. Second operand 10 states and 128 transitions. [2024-06-20 15:42:05,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 235 transitions, 3277 flow [2024-06-20 15:42:05,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 235 transitions, 3135 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-20 15:42:05,943 INFO L231 Difference]: Finished difference. Result has 235 places, 224 transitions, 2574 flow [2024-06-20 15:42:05,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2574, PETRI_PLACES=235, PETRI_TRANSITIONS=224} [2024-06-20 15:42:05,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-20 15:42:05,944 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 224 transitions, 2574 flow [2024-06-20 15:42:05,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:05,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:05,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:05,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 15:42:05,944 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)] === [2024-06-20 15:42:05,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1256133201, now seen corresponding path program 15 times [2024-06-20 15:42:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035932940] [2024-06-20 15:42:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:07,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:07,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035932940] [2024-06-20 15:42:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035932940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:07,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496448419] [2024-06-20 15:42:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:07,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:07,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:07,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:07,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:07,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 224 transitions, 2574 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:07,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:07,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:07,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:07,668 INFO L124 PetriNetUnfolderBase]: 439/827 cut-off events. [2024-06-20 15:42:07,668 INFO L125 PetriNetUnfolderBase]: For 68336/68336 co-relation queries the response was YES. [2024-06-20 15:42:07,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6562 conditions, 827 events. 439/827 cut-off events. For 68336/68336 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4246 event pairs, 40 based on Foata normal form. 1/827 useless extension candidates. Maximal degree in co-relation 6452. Up to 608 conditions per place. [2024-06-20 15:42:07,676 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 67 changer transitions 0/240 dead transitions. [2024-06-20 15:42:07,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 240 transitions, 3598 flow [2024-06-20 15:42:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-20 15:42:07,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-20 15:42:07,677 INFO L175 Difference]: Start difference. First operand has 235 places, 224 transitions, 2574 flow. Second operand 10 states and 133 transitions. [2024-06-20 15:42:07,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 240 transitions, 3598 flow [2024-06-20 15:42:07,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 240 transitions, 3351 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-20 15:42:07,819 INFO L231 Difference]: Finished difference. Result has 240 places, 228 transitions, 2570 flow [2024-06-20 15:42:07,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2570, PETRI_PLACES=240, PETRI_TRANSITIONS=228} [2024-06-20 15:42:07,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-20 15:42:07,819 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 228 transitions, 2570 flow [2024-06-20 15:42:07,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:07,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:07,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:07,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 15:42:07,819 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)] === [2024-06-20 15:42:07,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2085910449, now seen corresponding path program 4 times [2024-06-20 15:42:07,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:07,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710832170] [2024-06-20 15:42:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:07,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:09,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:09,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710832170] [2024-06-20 15:42:09,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710832170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:09,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:09,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:09,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187840463] [2024-06-20 15:42:09,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:09,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:09,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:09,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:09,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 228 transitions, 2570 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:09,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:09,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:09,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:09,491 INFO L124 PetriNetUnfolderBase]: 443/835 cut-off events. [2024-06-20 15:42:09,492 INFO L125 PetriNetUnfolderBase]: For 71823/71823 co-relation queries the response was YES. [2024-06-20 15:42:09,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6552 conditions, 835 events. 443/835 cut-off events. For 71823/71823 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4305 event pairs, 37 based on Foata normal form. 2/836 useless extension candidates. Maximal degree in co-relation 6441. Up to 737 conditions per place. [2024-06-20 15:42:09,499 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 215 selfloop transitions, 21 changer transitions 0/239 dead transitions. [2024-06-20 15:42:09,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 239 transitions, 3092 flow [2024-06-20 15:42:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:09,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-20 15:42:09,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-20 15:42:09,500 INFO L175 Difference]: Start difference. First operand has 240 places, 228 transitions, 2570 flow. Second operand 10 states and 116 transitions. [2024-06-20 15:42:09,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 239 transitions, 3092 flow [2024-06-20 15:42:09,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 239 transitions, 2991 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-20 15:42:09,640 INFO L231 Difference]: Finished difference. Result has 245 places, 229 transitions, 2545 flow [2024-06-20 15:42:09,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2545, PETRI_PLACES=245, PETRI_TRANSITIONS=229} [2024-06-20 15:42:09,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-20 15:42:09,641 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 229 transitions, 2545 flow [2024-06-20 15:42:09,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:09,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:09,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 15:42:09,642 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)] === [2024-06-20 15:42:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 505854775, now seen corresponding path program 4 times [2024-06-20 15:42:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549647996] [2024-06-20 15:42:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:10,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549647996] [2024-06-20 15:42:10,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549647996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:10,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:10,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:42:10,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485508130] [2024-06-20 15:42:10,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:10,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:42:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:42:10,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:42:10,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:10,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 229 transitions, 2545 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:10,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:10,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:10,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:11,081 INFO L124 PetriNetUnfolderBase]: 441/832 cut-off events. [2024-06-20 15:42:11,082 INFO L125 PetriNetUnfolderBase]: For 68431/68431 co-relation queries the response was YES. [2024-06-20 15:42:11,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6397 conditions, 832 events. 441/832 cut-off events. For 68431/68431 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4282 event pairs, 40 based on Foata normal form. 1/832 useless extension candidates. Maximal degree in co-relation 6285. Up to 537 conditions per place. [2024-06-20 15:42:11,090 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 89 changer transitions 0/237 dead transitions. [2024-06-20 15:42:11,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 237 transitions, 3031 flow [2024-06-20 15:42:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:42:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:42:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-20 15:42:11,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-20 15:42:11,091 INFO L175 Difference]: Start difference. First operand has 245 places, 229 transitions, 2545 flow. Second operand 9 states and 120 transitions. [2024-06-20 15:42:11,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 237 transitions, 3031 flow [2024-06-20 15:42:11,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 237 transitions, 2905 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:11,230 INFO L231 Difference]: Finished difference. Result has 245 places, 229 transitions, 2606 flow [2024-06-20 15:42:11,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2606, PETRI_PLACES=245, PETRI_TRANSITIONS=229} [2024-06-20 15:42:11,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-20 15:42:11,230 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 229 transitions, 2606 flow [2024-06-20 15:42:11,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:11,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:11,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:11,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 15:42:11,231 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)] === [2024-06-20 15:42:11,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1525593415, now seen corresponding path program 16 times [2024-06-20 15:42:11,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:11,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922647438] [2024-06-20 15:42:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:11,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:12,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:12,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922647438] [2024-06-20 15:42:12,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922647438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:12,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:12,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403977707] [2024-06-20 15:42:12,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:12,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:12,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:12,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:12,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 229 transitions, 2606 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:12,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:12,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:12,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:12,828 INFO L124 PetriNetUnfolderBase]: 467/884 cut-off events. [2024-06-20 15:42:12,828 INFO L125 PetriNetUnfolderBase]: For 85867/85867 co-relation queries the response was YES. [2024-06-20 15:42:12,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7302 conditions, 884 events. 467/884 cut-off events. For 85867/85867 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4656 event pairs, 40 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 7190. Up to 439 conditions per place. [2024-06-20 15:42:12,835 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 109 changer transitions 0/254 dead transitions. [2024-06-20 15:42:12,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 254 transitions, 4080 flow [2024-06-20 15:42:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-20 15:42:12,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-20 15:42:12,836 INFO L175 Difference]: Start difference. First operand has 245 places, 229 transitions, 2606 flow. Second operand 10 states and 138 transitions. [2024-06-20 15:42:12,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 254 transitions, 4080 flow [2024-06-20 15:42:13,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 254 transitions, 3868 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-20 15:42:13,011 INFO L231 Difference]: Finished difference. Result has 245 places, 241 transitions, 3003 flow [2024-06-20 15:42:13,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3003, PETRI_PLACES=245, PETRI_TRANSITIONS=241} [2024-06-20 15:42:13,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-20 15:42:13,012 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 241 transitions, 3003 flow [2024-06-20 15:42:13,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:13,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:13,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:13,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 15:42:13,013 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)] === [2024-06-20 15:42:13,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash 505863455, now seen corresponding path program 5 times [2024-06-20 15:42:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:13,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300625148] [2024-06-20 15:42:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:13,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300625148] [2024-06-20 15:42:14,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300625148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:14,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:14,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:14,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978374033] [2024-06-20 15:42:14,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:14,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:14,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:14,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:14,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:14,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:14,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 241 transitions, 3003 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:14,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:14,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:14,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:15,004 INFO L124 PetriNetUnfolderBase]: 464/879 cut-off events. [2024-06-20 15:42:15,004 INFO L125 PetriNetUnfolderBase]: For 79410/79410 co-relation queries the response was YES. [2024-06-20 15:42:15,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 879 events. 464/879 cut-off events. For 79410/79410 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4622 event pairs, 36 based on Foata normal form. 2/880 useless extension candidates. Maximal degree in co-relation 7052. Up to 750 conditions per place. [2024-06-20 15:42:15,012 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 31 changer transitions 0/251 dead transitions. [2024-06-20 15:42:15,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 251 transitions, 3521 flow [2024-06-20 15:42:15,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 15:42:15,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 15:42:15,013 INFO L175 Difference]: Start difference. First operand has 245 places, 241 transitions, 3003 flow. Second operand 10 states and 119 transitions. [2024-06-20 15:42:15,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 251 transitions, 3521 flow [2024-06-20 15:42:15,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 251 transitions, 3322 flow, removed 81 selfloop flow, removed 3 redundant places. [2024-06-20 15:42:15,194 INFO L231 Difference]: Finished difference. Result has 252 places, 241 transitions, 2870 flow [2024-06-20 15:42:15,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2870, PETRI_PLACES=252, PETRI_TRANSITIONS=241} [2024-06-20 15:42:15,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-20 15:42:15,195 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 241 transitions, 2870 flow [2024-06-20 15:42:15,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:15,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:15,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:15,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 15:42:15,195 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)] === [2024-06-20 15:42:15,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash 505623887, now seen corresponding path program 17 times [2024-06-20 15:42:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:15,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075117389] [2024-06-20 15:42:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:15,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:16,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:16,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075117389] [2024-06-20 15:42:16,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075117389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:16,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:16,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:16,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431812579] [2024-06-20 15:42:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:16,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:16,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:16,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 241 transitions, 2870 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:16,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:16,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:16,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:17,092 INFO L124 PetriNetUnfolderBase]: 465/881 cut-off events. [2024-06-20 15:42:17,092 INFO L125 PetriNetUnfolderBase]: For 76430/76430 co-relation queries the response was YES. [2024-06-20 15:42:17,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6979 conditions, 881 events. 465/881 cut-off events. For 76430/76430 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4633 event pairs, 39 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 6866. Up to 437 conditions per place. [2024-06-20 15:42:17,099 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 112 changer transitions 0/255 dead transitions. [2024-06-20 15:42:17,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 255 transitions, 3886 flow [2024-06-20 15:42:17,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-20 15:42:17,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-20 15:42:17,101 INFO L175 Difference]: Start difference. First operand has 252 places, 241 transitions, 2870 flow. Second operand 10 states and 135 transitions. [2024-06-20 15:42:17,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 255 transitions, 3886 flow [2024-06-20 15:42:17,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 255 transitions, 3739 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:17,271 INFO L231 Difference]: Finished difference. Result has 253 places, 243 transitions, 3003 flow [2024-06-20 15:42:17,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3003, PETRI_PLACES=253, PETRI_TRANSITIONS=243} [2024-06-20 15:42:17,272 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-20 15:42:17,272 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 243 transitions, 3003 flow [2024-06-20 15:42:17,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:17,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:17,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:17,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 15:42:17,273 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)] === [2024-06-20 15:42:17,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:17,273 INFO L85 PathProgramCache]: Analyzing trace with hash 242766463, now seen corresponding path program 6 times [2024-06-20 15:42:17,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:17,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637075409] [2024-06-20 15:42:17,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:17,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637075409] [2024-06-20 15:42:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637075409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:18,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:18,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:42:18,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773795557] [2024-06-20 15:42:18,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:18,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:42:18,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:18,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:42:18,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:42:18,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:18,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 243 transitions, 3003 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:18,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:18,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:18,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:18,502 INFO L124 PetriNetUnfolderBase]: 482/919 cut-off events. [2024-06-20 15:42:18,502 INFO L125 PetriNetUnfolderBase]: For 79001/79001 co-relation queries the response was YES. [2024-06-20 15:42:18,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 919 events. 482/919 cut-off events. For 79001/79001 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4899 event pairs, 35 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 7148. Up to 777 conditions per place. [2024-06-20 15:42:18,510 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 237 selfloop transitions, 27 changer transitions 0/267 dead transitions. [2024-06-20 15:42:18,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 267 transitions, 3643 flow [2024-06-20 15:42:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:42:18,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:42:18,511 INFO L175 Difference]: Start difference. First operand has 253 places, 243 transitions, 3003 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:42:18,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 267 transitions, 3643 flow [2024-06-20 15:42:18,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 267 transitions, 3449 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:18,689 INFO L231 Difference]: Finished difference. Result has 257 places, 249 transitions, 2937 flow [2024-06-20 15:42:18,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2937, PETRI_PLACES=257, PETRI_TRANSITIONS=249} [2024-06-20 15:42:18,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-20 15:42:18,690 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 249 transitions, 2937 flow [2024-06-20 15:42:18,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:18,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:18,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:18,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 15:42:18,691 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)] === [2024-06-20 15:42:18,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash 103636027, now seen corresponding path program 7 times [2024-06-20 15:42:18,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:18,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021538170] [2024-06-20 15:42:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:18,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:19,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:19,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021538170] [2024-06-20 15:42:19,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021538170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:19,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:19,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:42:19,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55839786] [2024-06-20 15:42:19,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:19,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:42:19,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:42:19,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:42:19,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:19,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 249 transitions, 2937 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:19,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:19,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:19,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:19,923 INFO L124 PetriNetUnfolderBase]: 491/940 cut-off events. [2024-06-20 15:42:19,924 INFO L125 PetriNetUnfolderBase]: For 79172/79172 co-relation queries the response was YES. [2024-06-20 15:42:19,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7185 conditions, 940 events. 491/940 cut-off events. For 79172/79172 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5108 event pairs, 42 based on Foata normal form. 2/941 useless extension candidates. Maximal degree in co-relation 7070. Up to 796 conditions per place. [2024-06-20 15:42:19,932 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 238 selfloop transitions, 29 changer transitions 0/270 dead transitions. [2024-06-20 15:42:19,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 270 transitions, 3559 flow [2024-06-20 15:42:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:42:19,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:42:19,933 INFO L175 Difference]: Start difference. First operand has 257 places, 249 transitions, 2937 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:42:19,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 270 transitions, 3559 flow [2024-06-20 15:42:20,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 270 transitions, 3406 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:20,117 INFO L231 Difference]: Finished difference. Result has 261 places, 251 transitions, 2890 flow [2024-06-20 15:42:20,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2890, PETRI_PLACES=261, PETRI_TRANSITIONS=251} [2024-06-20 15:42:20,117 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-20 15:42:20,117 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 251 transitions, 2890 flow [2024-06-20 15:42:20,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:20,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:20,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:20,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 15:42:20,118 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)] === [2024-06-20 15:42:20,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash 554286359, now seen corresponding path program 8 times [2024-06-20 15:42:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:20,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542357041] [2024-06-20 15:42:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:20,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542357041] [2024-06-20 15:42:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542357041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:20,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:20,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:42:20,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946077154] [2024-06-20 15:42:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:20,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:42:20,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:42:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:42:21,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:21,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 251 transitions, 2890 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:21,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:21,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:21,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:21,378 INFO L124 PetriNetUnfolderBase]: 500/959 cut-off events. [2024-06-20 15:42:21,378 INFO L125 PetriNetUnfolderBase]: For 80813/80813 co-relation queries the response was YES. [2024-06-20 15:42:21,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 959 events. 500/959 cut-off events. For 80813/80813 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5243 event pairs, 14 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 7121. Up to 770 conditions per place. [2024-06-20 15:42:21,387 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 236 selfloop transitions, 33 changer transitions 0/272 dead transitions. [2024-06-20 15:42:21,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 272 transitions, 3518 flow [2024-06-20 15:42:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:42:21,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:42:21,388 INFO L175 Difference]: Start difference. First operand has 261 places, 251 transitions, 2890 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:42:21,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 272 transitions, 3518 flow [2024-06-20 15:42:21,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 272 transitions, 3426 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:21,577 INFO L231 Difference]: Finished difference. Result has 264 places, 253 transitions, 2912 flow [2024-06-20 15:42:21,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2912, PETRI_PLACES=264, PETRI_TRANSITIONS=253} [2024-06-20 15:42:21,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-20 15:42:21,577 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 253 transitions, 2912 flow [2024-06-20 15:42:21,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:21,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:21,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:21,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 15:42:21,578 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)] === [2024-06-20 15:42:21,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:21,578 INFO L85 PathProgramCache]: Analyzing trace with hash -374043471, now seen corresponding path program 9 times [2024-06-20 15:42:21,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:21,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971503119] [2024-06-20 15:42:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:21,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:22,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971503119] [2024-06-20 15:42:22,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971503119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:22,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:22,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:42:22,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086679632] [2024-06-20 15:42:22,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:22,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:42:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:42:22,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:42:22,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:22,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 253 transitions, 2912 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:22,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:22,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:22,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:22,780 INFO L124 PetriNetUnfolderBase]: 497/953 cut-off events. [2024-06-20 15:42:22,780 INFO L125 PetriNetUnfolderBase]: For 76905/76905 co-relation queries the response was YES. [2024-06-20 15:42:22,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7035 conditions, 953 events. 497/953 cut-off events. For 76905/76905 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5213 event pairs, 41 based on Foata normal form. 2/954 useless extension candidates. Maximal degree in co-relation 6919. Up to 810 conditions per place. [2024-06-20 15:42:22,789 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 241 selfloop transitions, 26 changer transitions 0/270 dead transitions. [2024-06-20 15:42:22,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 270 transitions, 3492 flow [2024-06-20 15:42:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:42:22,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:42:22,790 INFO L175 Difference]: Start difference. First operand has 264 places, 253 transitions, 2912 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:42:22,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 270 transitions, 3492 flow [2024-06-20 15:42:22,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 270 transitions, 3384 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:22,970 INFO L231 Difference]: Finished difference. Result has 266 places, 253 transitions, 2860 flow [2024-06-20 15:42:22,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2860, PETRI_PLACES=266, PETRI_TRANSITIONS=253} [2024-06-20 15:42:22,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-20 15:42:22,970 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 253 transitions, 2860 flow [2024-06-20 15:42:22,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:22,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:22,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:22,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 15:42:22,971 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)] === [2024-06-20 15:42:22,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:22,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1952551924, now seen corresponding path program 1 times [2024-06-20 15:42:22,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:22,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653144351] [2024-06-20 15:42:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:22,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:24,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:24,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653144351] [2024-06-20 15:42:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653144351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:24,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282785966] [2024-06-20 15:42:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:24,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:24,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:24,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 253 transitions, 2860 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:24,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:24,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:24,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:25,164 INFO L124 PetriNetUnfolderBase]: 501/962 cut-off events. [2024-06-20 15:42:25,164 INFO L125 PetriNetUnfolderBase]: For 78988/78988 co-relation queries the response was YES. [2024-06-20 15:42:25,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7011 conditions, 962 events. 501/962 cut-off events. For 78988/78988 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5295 event pairs, 46 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 6895. Up to 818 conditions per place. [2024-06-20 15:42:25,173 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 236 selfloop transitions, 31 changer transitions 0/270 dead transitions. [2024-06-20 15:42:25,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 270 transitions, 3454 flow [2024-06-20 15:42:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:42:25,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:42:25,174 INFO L175 Difference]: Start difference. First operand has 266 places, 253 transitions, 2860 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:42:25,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 270 transitions, 3454 flow [2024-06-20 15:42:25,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 270 transitions, 3320 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-20 15:42:25,399 INFO L231 Difference]: Finished difference. Result has 266 places, 254 transitions, 2814 flow [2024-06-20 15:42:25,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2814, PETRI_PLACES=266, PETRI_TRANSITIONS=254} [2024-06-20 15:42:25,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-20 15:42:25,399 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 254 transitions, 2814 flow [2024-06-20 15:42:25,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:25,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:25,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:25,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 15:42:25,400 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)] === [2024-06-20 15:42:25,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2039391604, now seen corresponding path program 2 times [2024-06-20 15:42:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163521786] [2024-06-20 15:42:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:26,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:26,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163521786] [2024-06-20 15:42:26,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163521786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:26,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:26,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117941222] [2024-06-20 15:42:26,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:26,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:26,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:26,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:26,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:26,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:26,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 254 transitions, 2814 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:26,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:26,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:26,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:27,154 INFO L124 PetriNetUnfolderBase]: 505/970 cut-off events. [2024-06-20 15:42:27,154 INFO L125 PetriNetUnfolderBase]: For 79598/79598 co-relation queries the response was YES. [2024-06-20 15:42:27,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6994 conditions, 970 events. 505/970 cut-off events. For 79598/79598 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5347 event pairs, 48 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 6881. Up to 821 conditions per place. [2024-06-20 15:42:27,162 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 239 selfloop transitions, 30 changer transitions 0/272 dead transitions. [2024-06-20 15:42:27,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 272 transitions, 3416 flow [2024-06-20 15:42:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:42:27,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:42:27,163 INFO L175 Difference]: Start difference. First operand has 266 places, 254 transitions, 2814 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:42:27,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 272 transitions, 3416 flow [2024-06-20 15:42:27,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 272 transitions, 3317 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:27,358 INFO L231 Difference]: Finished difference. Result has 267 places, 255 transitions, 2803 flow [2024-06-20 15:42:27,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2715, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2803, PETRI_PLACES=267, PETRI_TRANSITIONS=255} [2024-06-20 15:42:27,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-20 15:42:27,359 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 255 transitions, 2803 flow [2024-06-20 15:42:27,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:27,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:27,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:27,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 15:42:27,360 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)] === [2024-06-20 15:42:27,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2041265554, now seen corresponding path program 3 times [2024-06-20 15:42:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870217491] [2024-06-20 15:42:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:27,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:28,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870217491] [2024-06-20 15:42:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870217491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:28,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:28,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:28,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48067756] [2024-06-20 15:42:28,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:28,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:28,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:28,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:28,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 255 transitions, 2803 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:28,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:28,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:28,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:28,901 INFO L124 PetriNetUnfolderBase]: 509/978 cut-off events. [2024-06-20 15:42:28,901 INFO L125 PetriNetUnfolderBase]: For 82065/82065 co-relation queries the response was YES. [2024-06-20 15:42:28,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7005 conditions, 978 events. 509/978 cut-off events. For 82065/82065 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5399 event pairs, 18 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 6892. Up to 733 conditions per place. [2024-06-20 15:42:28,908 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 234 selfloop transitions, 37 changer transitions 0/274 dead transitions. [2024-06-20 15:42:28,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 274 transitions, 3413 flow [2024-06-20 15:42:28,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 15:42:28,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 15:42:28,909 INFO L175 Difference]: Start difference. First operand has 267 places, 255 transitions, 2803 flow. Second operand 10 states and 122 transitions. [2024-06-20 15:42:28,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 274 transitions, 3413 flow [2024-06-20 15:42:29,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 274 transitions, 3335 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:29,099 INFO L231 Difference]: Finished difference. Result has 269 places, 256 transitions, 2833 flow [2024-06-20 15:42:29,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2833, PETRI_PLACES=269, PETRI_TRANSITIONS=256} [2024-06-20 15:42:29,100 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-20 15:42:29,100 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 256 transitions, 2833 flow [2024-06-20 15:42:29,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:29,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:29,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:29,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 15:42:29,100 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)] === [2024-06-20 15:42:29,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1621474346, now seen corresponding path program 4 times [2024-06-20 15:42:29,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:29,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4050288] [2024-06-20 15:42:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:29,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:30,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:30,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4050288] [2024-06-20 15:42:30,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4050288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:30,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:30,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:30,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116194596] [2024-06-20 15:42:30,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:30,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:30,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:30,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:30,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:30,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 256 transitions, 2833 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:30,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:30,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:30,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:30,988 INFO L124 PetriNetUnfolderBase]: 513/985 cut-off events. [2024-06-20 15:42:30,988 INFO L125 PetriNetUnfolderBase]: For 84877/84877 co-relation queries the response was YES. [2024-06-20 15:42:30,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 985 events. 513/985 cut-off events. For 84877/84877 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5430 event pairs, 55 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 6984. Up to 850 conditions per place. [2024-06-20 15:42:31,000 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 239 selfloop transitions, 30 changer transitions 0/272 dead transitions. [2024-06-20 15:42:31,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 272 transitions, 3440 flow [2024-06-20 15:42:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 15:42:31,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:42:31,002 INFO L175 Difference]: Start difference. First operand has 269 places, 256 transitions, 2833 flow. Second operand 10 states and 120 transitions. [2024-06-20 15:42:31,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 272 transitions, 3440 flow [2024-06-20 15:42:31,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 272 transitions, 3350 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:31,225 INFO L231 Difference]: Finished difference. Result has 272 places, 258 transitions, 2851 flow [2024-06-20 15:42:31,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2851, PETRI_PLACES=272, PETRI_TRANSITIONS=258} [2024-06-20 15:42:31,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-20 15:42:31,225 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 258 transitions, 2851 flow [2024-06-20 15:42:31,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:31,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:31,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:31,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 15:42:31,226 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)] === [2024-06-20 15:42:31,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:31,226 INFO L85 PathProgramCache]: Analyzing trace with hash -547974042, now seen corresponding path program 5 times [2024-06-20 15:42:31,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:31,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998026433] [2024-06-20 15:42:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:31,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998026433] [2024-06-20 15:42:32,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998026433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:32,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:32,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:32,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834635987] [2024-06-20 15:42:32,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:32,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:32,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:32,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:32,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:32,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:32,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 258 transitions, 2851 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:32,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:32,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:32,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:33,083 INFO L124 PetriNetUnfolderBase]: 517/991 cut-off events. [2024-06-20 15:42:33,083 INFO L125 PetriNetUnfolderBase]: For 86953/86953 co-relation queries the response was YES. [2024-06-20 15:42:33,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7147 conditions, 991 events. 517/991 cut-off events. For 86953/86953 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5479 event pairs, 53 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 7031. Up to 853 conditions per place. [2024-06-20 15:42:33,090 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 242 selfloop transitions, 29 changer transitions 0/274 dead transitions. [2024-06-20 15:42:33,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 274 transitions, 3457 flow [2024-06-20 15:42:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 15:42:33,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:42:33,091 INFO L175 Difference]: Start difference. First operand has 272 places, 258 transitions, 2851 flow. Second operand 10 states and 120 transitions. [2024-06-20 15:42:33,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 274 transitions, 3457 flow [2024-06-20 15:42:33,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 274 transitions, 3380 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:33,305 INFO L231 Difference]: Finished difference. Result has 275 places, 259 transitions, 2866 flow [2024-06-20 15:42:33,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2866, PETRI_PLACES=275, PETRI_TRANSITIONS=259} [2024-06-20 15:42:33,305 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-20 15:42:33,305 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 259 transitions, 2866 flow [2024-06-20 15:42:33,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:33,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:33,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:33,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 15:42:33,306 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)] === [2024-06-20 15:42:33,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:33,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1626836726, now seen corresponding path program 6 times [2024-06-20 15:42:33,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:33,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705098330] [2024-06-20 15:42:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:34,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:34,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705098330] [2024-06-20 15:42:34,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705098330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:34,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:34,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858000864] [2024-06-20 15:42:34,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:34,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:34,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:34,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:34,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:34,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 259 transitions, 2866 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:34,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:34,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:34,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:35,100 INFO L124 PetriNetUnfolderBase]: 521/999 cut-off events. [2024-06-20 15:42:35,100 INFO L125 PetriNetUnfolderBase]: For 89209/89209 co-relation queries the response was YES. [2024-06-20 15:42:35,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7213 conditions, 999 events. 521/999 cut-off events. For 89209/89209 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5549 event pairs, 55 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 7096. Up to 856 conditions per place. [2024-06-20 15:42:35,109 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 238 selfloop transitions, 33 changer transitions 0/274 dead transitions. [2024-06-20 15:42:35,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 274 transitions, 3472 flow [2024-06-20 15:42:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 15:42:35,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 15:42:35,110 INFO L175 Difference]: Start difference. First operand has 275 places, 259 transitions, 2866 flow. Second operand 10 states and 122 transitions. [2024-06-20 15:42:35,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 274 transitions, 3472 flow [2024-06-20 15:42:35,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 274 transitions, 3390 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:35,353 INFO L231 Difference]: Finished difference. Result has 277 places, 260 transitions, 2886 flow [2024-06-20 15:42:35,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2886, PETRI_PLACES=277, PETRI_TRANSITIONS=260} [2024-06-20 15:42:35,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-20 15:42:35,354 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 260 transitions, 2886 flow [2024-06-20 15:42:35,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:35,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:35,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:35,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 15:42:35,354 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)] === [2024-06-20 15:42:35,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1952545972, now seen corresponding path program 1 times [2024-06-20 15:42:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245252480] [2024-06-20 15:42:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:36,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:36,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245252480] [2024-06-20 15:42:36,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245252480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:36,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:36,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:36,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179894722] [2024-06-20 15:42:36,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:36,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:36,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:36,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:36,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:37,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:37,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 260 transitions, 2886 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:37,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:37,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:37,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:37,438 INFO L124 PetriNetUnfolderBase]: 519/997 cut-off events. [2024-06-20 15:42:37,438 INFO L125 PetriNetUnfolderBase]: For 84167/84167 co-relation queries the response was YES. [2024-06-20 15:42:37,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7087 conditions, 997 events. 519/997 cut-off events. For 84167/84167 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5543 event pairs, 51 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 6969. Up to 855 conditions per place. [2024-06-20 15:42:37,447 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 241 selfloop transitions, 34 changer transitions 0/278 dead transitions. [2024-06-20 15:42:37,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 278 transitions, 3532 flow [2024-06-20 15:42:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:42:37,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 15:42:37,449 INFO L175 Difference]: Start difference. First operand has 277 places, 260 transitions, 2886 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:42:37,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 278 transitions, 3532 flow [2024-06-20 15:42:37,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 278 transitions, 3440 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:37,652 INFO L231 Difference]: Finished difference. Result has 280 places, 262 transitions, 2927 flow [2024-06-20 15:42:37,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2927, PETRI_PLACES=280, PETRI_TRANSITIONS=262} [2024-06-20 15:42:37,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-20 15:42:37,652 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 262 transitions, 2927 flow [2024-06-20 15:42:37,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:37,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:37,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:37,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 15:42:37,653 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)] === [2024-06-20 15:42:37,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1626842678, now seen corresponding path program 2 times [2024-06-20 15:42:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:37,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303806416] [2024-06-20 15:42:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:37,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:39,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:39,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303806416] [2024-06-20 15:42:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303806416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:39,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:39,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:39,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491574452] [2024-06-20 15:42:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:39,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:39,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:39,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:39,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 262 transitions, 2927 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:39,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:39,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:39,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:40,362 INFO L124 PetriNetUnfolderBase]: 522/1003 cut-off events. [2024-06-20 15:42:40,362 INFO L125 PetriNetUnfolderBase]: For 86018/86018 co-relation queries the response was YES. [2024-06-20 15:42:40,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7147 conditions, 1003 events. 522/1003 cut-off events. For 86018/86018 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5586 event pairs, 52 based on Foata normal form. 1/1003 useless extension candidates. Maximal degree in co-relation 7028. Up to 813 conditions per place. [2024-06-20 15:42:40,370 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 226 selfloop transitions, 49 changer transitions 0/278 dead transitions. [2024-06-20 15:42:40,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 278 transitions, 3575 flow [2024-06-20 15:42:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:42:40,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:42:40,371 INFO L175 Difference]: Start difference. First operand has 280 places, 262 transitions, 2927 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:42:40,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 278 transitions, 3575 flow [2024-06-20 15:42:40,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 278 transitions, 3458 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:40,580 INFO L231 Difference]: Finished difference. Result has 282 places, 264 transitions, 2981 flow [2024-06-20 15:42:40,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2810, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2981, PETRI_PLACES=282, PETRI_TRANSITIONS=264} [2024-06-20 15:42:40,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-20 15:42:40,581 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 264 transitions, 2981 flow [2024-06-20 15:42:40,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:40,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:40,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:40,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 15:42:40,581 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)] === [2024-06-20 15:42:40,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:40,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1627052207, now seen corresponding path program 1 times [2024-06-20 15:42:40,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:40,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123477305] [2024-06-20 15:42:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:40,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:41,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123477305] [2024-06-20 15:42:41,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123477305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:41,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:41,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:41,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502894818] [2024-06-20 15:42:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:41,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:41,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:41,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:41,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:41,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:41,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 264 transitions, 2981 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:41,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:41,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:41,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:42,377 INFO L124 PetriNetUnfolderBase]: 542/1047 cut-off events. [2024-06-20 15:42:42,377 INFO L125 PetriNetUnfolderBase]: For 127474/127474 co-relation queries the response was YES. [2024-06-20 15:42:42,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7443 conditions, 1047 events. 542/1047 cut-off events. For 127474/127474 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5903 event pairs, 58 based on Foata normal form. 12/1058 useless extension candidates. Maximal degree in co-relation 7323. Up to 851 conditions per place. [2024-06-20 15:42:42,387 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 34 changer transitions 7/284 dead transitions. [2024-06-20 15:42:42,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 284 transitions, 3687 flow [2024-06-20 15:42:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:42:42,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 15:42:42,387 INFO L175 Difference]: Start difference. First operand has 282 places, 264 transitions, 2981 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:42:42,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 284 transitions, 3687 flow [2024-06-20 15:42:42,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 284 transitions, 3536 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:42,602 INFO L231 Difference]: Finished difference. Result has 284 places, 262 transitions, 2899 flow [2024-06-20 15:42:42,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2899, PETRI_PLACES=284, PETRI_TRANSITIONS=262} [2024-06-20 15:42:42,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-20 15:42:42,602 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 262 transitions, 2899 flow [2024-06-20 15:42:42,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:42,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:42,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:42,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 15:42:42,603 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)] === [2024-06-20 15:42:42,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1627051928, now seen corresponding path program 3 times [2024-06-20 15:42:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:42,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044637478] [2024-06-20 15:42:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:42,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:43,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:43,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044637478] [2024-06-20 15:42:43,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044637478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:43,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:43,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:43,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101202884] [2024-06-20 15:42:43,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:43,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:43,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:43,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:44,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:44,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 262 transitions, 2899 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:44,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:44,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:44,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:44,516 INFO L124 PetriNetUnfolderBase]: 526/1014 cut-off events. [2024-06-20 15:42:44,517 INFO L125 PetriNetUnfolderBase]: For 94896/94896 co-relation queries the response was YES. [2024-06-20 15:42:44,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7377 conditions, 1014 events. 526/1014 cut-off events. For 94896/94896 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5689 event pairs, 54 based on Foata normal form. 1/1014 useless extension candidates. Maximal degree in co-relation 7256. Up to 851 conditions per place. [2024-06-20 15:42:44,525 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 44 changer transitions 0/282 dead transitions. [2024-06-20 15:42:44,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 282 transitions, 3803 flow [2024-06-20 15:42:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:42:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:42:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 15:42:44,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 15:42:44,526 INFO L175 Difference]: Start difference. First operand has 284 places, 262 transitions, 2899 flow. Second operand 12 states and 145 transitions. [2024-06-20 15:42:44,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 282 transitions, 3803 flow [2024-06-20 15:42:44,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 282 transitions, 3691 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-20 15:42:44,805 INFO L231 Difference]: Finished difference. Result has 286 places, 266 transitions, 3020 flow [2024-06-20 15:42:44,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3020, PETRI_PLACES=286, PETRI_TRANSITIONS=266} [2024-06-20 15:42:44,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-20 15:42:44,806 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 266 transitions, 3020 flow [2024-06-20 15:42:44,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:44,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:44,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:44,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 15:42:44,808 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)] === [2024-06-20 15:42:44,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:44,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1627044488, now seen corresponding path program 4 times [2024-06-20 15:42:44,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:44,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018953247] [2024-06-20 15:42:44,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:44,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:46,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018953247] [2024-06-20 15:42:46,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018953247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:46,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:46,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:46,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723978700] [2024-06-20 15:42:46,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:46,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:46,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:46,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:46,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:46,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 266 transitions, 3020 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:46,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:46,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:46,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:47,236 INFO L124 PetriNetUnfolderBase]: 524/1011 cut-off events. [2024-06-20 15:42:47,237 INFO L125 PetriNetUnfolderBase]: For 92834/92834 co-relation queries the response was YES. [2024-06-20 15:42:47,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7230 conditions, 1011 events. 524/1011 cut-off events. For 92834/92834 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5684 event pairs, 54 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 7108. Up to 858 conditions per place. [2024-06-20 15:42:47,245 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 239 selfloop transitions, 38 changer transitions 0/280 dead transitions. [2024-06-20 15:42:47,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 280 transitions, 3608 flow [2024-06-20 15:42:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:42:47,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 15:42:47,246 INFO L175 Difference]: Start difference. First operand has 286 places, 266 transitions, 3020 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:42:47,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 280 transitions, 3608 flow [2024-06-20 15:42:47,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 280 transitions, 3448 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:47,492 INFO L231 Difference]: Finished difference. Result has 289 places, 266 transitions, 2941 flow [2024-06-20 15:42:47,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2941, PETRI_PLACES=289, PETRI_TRANSITIONS=266} [2024-06-20 15:42:47,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-20 15:42:47,492 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 266 transitions, 2941 flow [2024-06-20 15:42:47,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:47,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:47,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:47,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 15:42:47,493 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)] === [2024-06-20 15:42:47,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:47,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1634345302, now seen corresponding path program 7 times [2024-06-20 15:42:47,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:47,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082852885] [2024-06-20 15:42:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:47,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:48,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:48,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082852885] [2024-06-20 15:42:48,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082852885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:48,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:48,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:48,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211904101] [2024-06-20 15:42:48,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:48,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:48,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:48,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:48,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:49,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:49,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 266 transitions, 2941 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:49,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:49,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:49,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:49,408 INFO L124 PetriNetUnfolderBase]: 528/1020 cut-off events. [2024-06-20 15:42:49,408 INFO L125 PetriNetUnfolderBase]: For 98100/98100 co-relation queries the response was YES. [2024-06-20 15:42:49,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7270 conditions, 1020 events. 528/1020 cut-off events. For 98100/98100 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5723 event pairs, 52 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 7146. Up to 843 conditions per place. [2024-06-20 15:42:49,417 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 234 selfloop transitions, 42 changer transitions 0/279 dead transitions. [2024-06-20 15:42:49,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 279 transitions, 3553 flow [2024-06-20 15:42:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 15:42:49,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 15:42:49,418 INFO L175 Difference]: Start difference. First operand has 289 places, 266 transitions, 2941 flow. Second operand 10 states and 122 transitions. [2024-06-20 15:42:49,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 279 transitions, 3553 flow [2024-06-20 15:42:49,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 279 transitions, 3457 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-20 15:42:49,641 INFO L231 Difference]: Finished difference. Result has 289 places, 267 transitions, 2967 flow [2024-06-20 15:42:49,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2967, PETRI_PLACES=289, PETRI_TRANSITIONS=267} [2024-06-20 15:42:49,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-20 15:42:49,642 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 267 transitions, 2967 flow [2024-06-20 15:42:49,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:49,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:49,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:49,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 15:42:49,643 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)] === [2024-06-20 15:42:49,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash -999132350, now seen corresponding path program 8 times [2024-06-20 15:42:49,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:49,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705417894] [2024-06-20 15:42:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:49,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:51,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:51,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705417894] [2024-06-20 15:42:51,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705417894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:51,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:51,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:51,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711841109] [2024-06-20 15:42:51,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:51,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:51,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:51,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:51,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 267 transitions, 2967 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:51,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:51,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:51,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:51,625 INFO L124 PetriNetUnfolderBase]: 544/1048 cut-off events. [2024-06-20 15:42:51,626 INFO L125 PetriNetUnfolderBase]: For 100726/100726 co-relation queries the response was YES. [2024-06-20 15:42:51,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7517 conditions, 1048 events. 544/1048 cut-off events. For 100726/100726 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5943 event pairs, 56 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7392. Up to 917 conditions per place. [2024-06-20 15:42:51,634 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 257 selfloop transitions, 28 changer transitions 0/288 dead transitions. [2024-06-20 15:42:51,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 288 transitions, 3695 flow [2024-06-20 15:42:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:51,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 15:42:51,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-20 15:42:51,636 INFO L175 Difference]: Start difference. First operand has 289 places, 267 transitions, 2967 flow. Second operand 11 states and 130 transitions. [2024-06-20 15:42:51,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 288 transitions, 3695 flow [2024-06-20 15:42:51,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 288 transitions, 3571 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:51,869 INFO L231 Difference]: Finished difference. Result has 296 places, 276 transitions, 3065 flow [2024-06-20 15:42:51,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3065, PETRI_PLACES=296, PETRI_TRANSITIONS=276} [2024-06-20 15:42:51,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-20 15:42:51,870 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 276 transitions, 3065 flow [2024-06-20 15:42:51,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:51,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:51,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:51,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 15:42:51,871 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)] === [2024-06-20 15:42:51,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:51,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1833794962, now seen corresponding path program 9 times [2024-06-20 15:42:51,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:51,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778736764] [2024-06-20 15:42:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:51,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:53,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:53,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778736764] [2024-06-20 15:42:53,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778736764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:53,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:53,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586584698] [2024-06-20 15:42:53,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:53,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:53,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:53,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:53,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 276 transitions, 3065 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:53,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:53,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:53,797 INFO L124 PetriNetUnfolderBase]: 548/1058 cut-off events. [2024-06-20 15:42:53,797 INFO L125 PetriNetUnfolderBase]: For 103047/103047 co-relation queries the response was YES. [2024-06-20 15:42:53,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7577 conditions, 1058 events. 548/1058 cut-off events. For 103047/103047 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6031 event pairs, 52 based on Foata normal form. 2/1059 useless extension candidates. Maximal degree in co-relation 7447. Up to 897 conditions per place. [2024-06-20 15:42:53,808 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 250 selfloop transitions, 37 changer transitions 0/290 dead transitions. [2024-06-20 15:42:53,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 290 transitions, 3705 flow [2024-06-20 15:42:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 15:42:53,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:42:53,809 INFO L175 Difference]: Start difference. First operand has 296 places, 276 transitions, 3065 flow. Second operand 10 states and 120 transitions. [2024-06-20 15:42:53,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 290 transitions, 3705 flow [2024-06-20 15:42:54,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 290 transitions, 3635 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-20 15:42:54,057 INFO L231 Difference]: Finished difference. Result has 301 places, 277 transitions, 3111 flow [2024-06-20 15:42:54,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3111, PETRI_PLACES=301, PETRI_TRANSITIONS=277} [2024-06-20 15:42:54,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-20 15:42:54,058 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 277 transitions, 3111 flow [2024-06-20 15:42:54,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:54,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:54,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:54,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 15:42:54,058 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)] === [2024-06-20 15:42:54,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:54,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1828284712, now seen corresponding path program 10 times [2024-06-20 15:42:54,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:54,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118610053] [2024-06-20 15:42:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:54,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118610053] [2024-06-20 15:42:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118610053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:55,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103100997] [2024-06-20 15:42:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:55,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:55,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:55,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:55,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:55,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:55,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 277 transitions, 3111 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:55,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:55,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:55,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:55,961 INFO L124 PetriNetUnfolderBase]: 552/1066 cut-off events. [2024-06-20 15:42:55,961 INFO L125 PetriNetUnfolderBase]: For 105514/105514 co-relation queries the response was YES. [2024-06-20 15:42:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 1066 events. 552/1066 cut-off events. For 105514/105514 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6084 event pairs, 54 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 7538. Up to 901 conditions per place. [2024-06-20 15:42:55,974 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 246 selfloop transitions, 41 changer transitions 0/290 dead transitions. [2024-06-20 15:42:55,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 290 transitions, 3751 flow [2024-06-20 15:42:55,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:55,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 15:42:55,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 15:42:55,975 INFO L175 Difference]: Start difference. First operand has 301 places, 277 transitions, 3111 flow. Second operand 10 states and 122 transitions. [2024-06-20 15:42:55,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 290 transitions, 3751 flow [2024-06-20 15:42:56,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 290 transitions, 3645 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:56,234 INFO L231 Difference]: Finished difference. Result has 303 places, 278 transitions, 3131 flow [2024-06-20 15:42:56,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3005, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3131, PETRI_PLACES=303, PETRI_TRANSITIONS=278} [2024-06-20 15:42:56,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-20 15:42:56,234 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 278 transitions, 3131 flow [2024-06-20 15:42:56,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:56,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:56,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:56,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 15:42:56,235 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)] === [2024-06-20 15:42:56,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1626720790, now seen corresponding path program 5 times [2024-06-20 15:42:56,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:56,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634234730] [2024-06-20 15:42:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:56,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:57,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634234730] [2024-06-20 15:42:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634234730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:57,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:57,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:57,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642117057] [2024-06-20 15:42:57,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:57,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:57,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:57,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:42:57,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 278 transitions, 3131 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:57,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:57,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:42:57,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:58,251 INFO L124 PetriNetUnfolderBase]: 558/1078 cut-off events. [2024-06-20 15:42:58,252 INFO L125 PetriNetUnfolderBase]: For 103654/103654 co-relation queries the response was YES. [2024-06-20 15:42:58,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7752 conditions, 1078 events. 558/1078 cut-off events. For 103654/103654 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6167 event pairs, 54 based on Foata normal form. 1/1078 useless extension candidates. Maximal degree in co-relation 7620. Up to 797 conditions per place. [2024-06-20 15:42:58,262 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 208 selfloop transitions, 84 changer transitions 0/295 dead transitions. [2024-06-20 15:42:58,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 295 transitions, 4017 flow [2024-06-20 15:42:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:42:58,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 15:42:58,263 INFO L175 Difference]: Start difference. First operand has 303 places, 278 transitions, 3131 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:42:58,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 295 transitions, 4017 flow [2024-06-20 15:42:58,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 295 transitions, 3901 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:58,552 INFO L231 Difference]: Finished difference. Result has 307 places, 282 transitions, 3281 flow [2024-06-20 15:42:58,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3281, PETRI_PLACES=307, PETRI_TRANSITIONS=282} [2024-06-20 15:42:58,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-20 15:42:58,553 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 282 transitions, 3281 flow [2024-06-20 15:42:58,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:58,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:58,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:58,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 15:42:58,553 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)] === [2024-06-20 15:42:58,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash 297597547, now seen corresponding path program 2 times [2024-06-20 15:42:58,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:58,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885960142] [2024-06-20 15:42:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:58,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:59,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885960142] [2024-06-20 15:42:59,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885960142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:59,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999185925] [2024-06-20 15:42:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:00,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:00,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 282 transitions, 3281 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:00,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:00,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:00,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:00,460 INFO L124 PetriNetUnfolderBase]: 574/1112 cut-off events. [2024-06-20 15:43:00,461 INFO L125 PetriNetUnfolderBase]: For 143539/143539 co-relation queries the response was YES. [2024-06-20 15:43:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8052 conditions, 1112 events. 574/1112 cut-off events. For 143539/143539 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6396 event pairs, 56 based on Foata normal form. 10/1121 useless extension candidates. Maximal degree in co-relation 7918. Up to 874 conditions per place. [2024-06-20 15:43:00,472 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 241 selfloop transitions, 51 changer transitions 4/299 dead transitions. [2024-06-20 15:43:00,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 299 transitions, 3999 flow [2024-06-20 15:43:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:43:00,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 15:43:00,473 INFO L175 Difference]: Start difference. First operand has 307 places, 282 transitions, 3281 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:43:00,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 299 transitions, 3999 flow [2024-06-20 15:43:00,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 299 transitions, 3661 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:00,764 INFO L231 Difference]: Finished difference. Result has 309 places, 282 transitions, 3076 flow [2024-06-20 15:43:00,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3076, PETRI_PLACES=309, PETRI_TRANSITIONS=282} [2024-06-20 15:43:00,764 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-20 15:43:00,765 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 282 transitions, 3076 flow [2024-06-20 15:43:00,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:00,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:00,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:00,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 15:43:00,765 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)] === [2024-06-20 15:43:00,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:00,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1626720511, now seen corresponding path program 3 times [2024-06-20 15:43:00,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:00,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207057784] [2024-06-20 15:43:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:00,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:02,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:02,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207057784] [2024-06-20 15:43:02,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207057784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:02,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:02,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:02,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051567994] [2024-06-20 15:43:02,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:02,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:02,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:02,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:02,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 282 transitions, 3076 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:02,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:02,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:02,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:02,787 INFO L124 PetriNetUnfolderBase]: 572/1110 cut-off events. [2024-06-20 15:43:02,787 INFO L125 PetriNetUnfolderBase]: For 112231/112231 co-relation queries the response was YES. [2024-06-20 15:43:02,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7845 conditions, 1110 events. 572/1110 cut-off events. For 112231/112231 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6396 event pairs, 60 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 7711. Up to 885 conditions per place. [2024-06-20 15:43:02,797 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 65 changer transitions 0/296 dead transitions. [2024-06-20 15:43:02,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 296 transitions, 3728 flow [2024-06-20 15:43:02,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:43:02,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:43:02,798 INFO L175 Difference]: Start difference. First operand has 309 places, 282 transitions, 3076 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:43:02,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 296 transitions, 3728 flow [2024-06-20 15:43:03,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 296 transitions, 3608 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:03,079 INFO L231 Difference]: Finished difference. Result has 311 places, 283 transitions, 3128 flow [2024-06-20 15:43:03,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3128, PETRI_PLACES=311, PETRI_TRANSITIONS=283} [2024-06-20 15:43:03,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-20 15:43:03,080 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 283 transitions, 3128 flow [2024-06-20 15:43:03,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:03,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:03,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:03,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 15:43:03,080 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)] === [2024-06-20 15:43:03,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:03,080 INFO L85 PathProgramCache]: Analyzing trace with hash 498955567, now seen corresponding path program 4 times [2024-06-20 15:43:03,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:03,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524708114] [2024-06-20 15:43:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:03,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:04,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:04,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524708114] [2024-06-20 15:43:04,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524708114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:04,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:04,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:04,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707896628] [2024-06-20 15:43:04,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:04,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:04,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:04,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:04,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:04,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:04,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 283 transitions, 3128 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:04,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:04,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:04,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:05,320 INFO L124 PetriNetUnfolderBase]: 583/1133 cut-off events. [2024-06-20 15:43:05,320 INFO L125 PetriNetUnfolderBase]: For 124488/124488 co-relation queries the response was YES. [2024-06-20 15:43:05,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8283 conditions, 1133 events. 583/1133 cut-off events. For 124488/124488 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6595 event pairs, 59 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 8148. Up to 847 conditions per place. [2024-06-20 15:43:05,332 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 69 changer transitions 2/302 dead transitions. [2024-06-20 15:43:05,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 302 transitions, 4070 flow [2024-06-20 15:43:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-20 15:43:05,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-20 15:43:05,333 INFO L175 Difference]: Start difference. First operand has 311 places, 283 transitions, 3128 flow. Second operand 11 states and 139 transitions. [2024-06-20 15:43:05,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 302 transitions, 4070 flow [2024-06-20 15:43:05,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 302 transitions, 3929 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:05,638 INFO L231 Difference]: Finished difference. Result has 314 places, 285 transitions, 3207 flow [2024-06-20 15:43:05,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3207, PETRI_PLACES=314, PETRI_TRANSITIONS=285} [2024-06-20 15:43:05,638 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-20 15:43:05,638 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 285 transitions, 3207 flow [2024-06-20 15:43:05,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:05,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:05,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:05,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 15:43:05,639 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)] === [2024-06-20 15:43:05,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1626979981, now seen corresponding path program 5 times [2024-06-20 15:43:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:05,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195969507] [2024-06-20 15:43:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:07,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:07,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195969507] [2024-06-20 15:43:07,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195969507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:07,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:07,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:07,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561096129] [2024-06-20 15:43:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:07,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:07,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:07,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 285 transitions, 3207 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:07,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:07,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:07,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:07,835 INFO L124 PetriNetUnfolderBase]: 587/1141 cut-off events. [2024-06-20 15:43:07,835 INFO L125 PetriNetUnfolderBase]: For 127298/127298 co-relation queries the response was YES. [2024-06-20 15:43:07,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8377 conditions, 1141 events. 587/1141 cut-off events. For 127298/127298 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6628 event pairs, 61 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 8242. Up to 932 conditions per place. [2024-06-20 15:43:07,846 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 56 changer transitions 0/299 dead transitions. [2024-06-20 15:43:07,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 299 transitions, 3869 flow [2024-06-20 15:43:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:43:07,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:43:07,847 INFO L175 Difference]: Start difference. First operand has 314 places, 285 transitions, 3207 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:43:07,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 299 transitions, 3869 flow [2024-06-20 15:43:08,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 299 transitions, 3726 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-20 15:43:08,172 INFO L231 Difference]: Finished difference. Result has 318 places, 286 transitions, 3222 flow [2024-06-20 15:43:08,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3070, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3222, PETRI_PLACES=318, PETRI_TRANSITIONS=286} [2024-06-20 15:43:08,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-20 15:43:08,172 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 286 transitions, 3222 flow [2024-06-20 15:43:08,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:08,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:08,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:08,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 15:43:08,173 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)] === [2024-06-20 15:43:08,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1626980260, now seen corresponding path program 6 times [2024-06-20 15:43:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:08,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103544559] [2024-06-20 15:43:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:09,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:09,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103544559] [2024-06-20 15:43:09,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103544559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:09,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:09,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:09,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415933750] [2024-06-20 15:43:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:09,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:09,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:09,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:09,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 286 transitions, 3222 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:09,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:09,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:09,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:10,146 INFO L124 PetriNetUnfolderBase]: 595/1154 cut-off events. [2024-06-20 15:43:10,146 INFO L125 PetriNetUnfolderBase]: For 129386/129386 co-relation queries the response was YES. [2024-06-20 15:43:10,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8616 conditions, 1154 events. 595/1154 cut-off events. For 129386/129386 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6708 event pairs, 61 based on Foata normal form. 1/1154 useless extension candidates. Maximal degree in co-relation 8479. Up to 870 conditions per place. [2024-06-20 15:43:10,157 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 79 changer transitions 0/303 dead transitions. [2024-06-20 15:43:10,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 303 transitions, 4352 flow [2024-06-20 15:43:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-20 15:43:10,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 15:43:10,158 INFO L175 Difference]: Start difference. First operand has 318 places, 286 transitions, 3222 flow. Second operand 10 states and 130 transitions. [2024-06-20 15:43:10,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 303 transitions, 4352 flow [2024-06-20 15:43:10,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 303 transitions, 4207 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:10,491 INFO L231 Difference]: Finished difference. Result has 319 places, 290 transitions, 3358 flow [2024-06-20 15:43:10,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3358, PETRI_PLACES=319, PETRI_TRANSITIONS=290} [2024-06-20 15:43:10,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 15:43:10,491 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 290 transitions, 3358 flow [2024-06-20 15:43:10,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:10,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:10,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:10,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 15:43:10,492 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)] === [2024-06-20 15:43:10,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:10,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1626987700, now seen corresponding path program 7 times [2024-06-20 15:43:10,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:10,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794163174] [2024-06-20 15:43:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:10,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:12,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794163174] [2024-06-20 15:43:12,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794163174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:12,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:12,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:12,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517048061] [2024-06-20 15:43:12,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:12,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:12,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:12,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:12,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:12,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:12,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 290 transitions, 3358 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:12,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:12,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:12,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:12,993 INFO L124 PetriNetUnfolderBase]: 593/1151 cut-off events. [2024-06-20 15:43:12,993 INFO L125 PetriNetUnfolderBase]: For 126661/126661 co-relation queries the response was YES. [2024-06-20 15:43:13,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8510 conditions, 1151 events. 593/1151 cut-off events. For 126661/126661 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6696 event pairs, 61 based on Foata normal form. 1/1151 useless extension candidates. Maximal degree in co-relation 8372. Up to 918 conditions per place. [2024-06-20 15:43:13,004 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 69 changer transitions 0/302 dead transitions. [2024-06-20 15:43:13,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 302 transitions, 3984 flow [2024-06-20 15:43:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:13,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:43:13,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:43:13,005 INFO L175 Difference]: Start difference. First operand has 319 places, 290 transitions, 3358 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:43:13,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 302 transitions, 3984 flow [2024-06-20 15:43:13,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 302 transitions, 3772 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:13,335 INFO L231 Difference]: Finished difference. Result has 322 places, 290 transitions, 3289 flow [2024-06-20 15:43:13,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3289, PETRI_PLACES=322, PETRI_TRANSITIONS=290} [2024-06-20 15:43:13,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-20 15:43:13,336 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 290 transitions, 3289 flow [2024-06-20 15:43:13,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:13,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:13,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:13,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 15:43:13,337 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)] === [2024-06-20 15:43:13,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:13,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1634339350, now seen corresponding path program 8 times [2024-06-20 15:43:13,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:13,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198515897] [2024-06-20 15:43:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:13,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:14,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:14,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198515897] [2024-06-20 15:43:14,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198515897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:14,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:14,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795133598] [2024-06-20 15:43:14,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:14,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:14,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:14,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:14,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 290 transitions, 3289 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:14,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:14,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:14,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:15,466 INFO L124 PetriNetUnfolderBase]: 606/1174 cut-off events. [2024-06-20 15:43:15,466 INFO L125 PetriNetUnfolderBase]: For 134171/134171 co-relation queries the response was YES. [2024-06-20 15:43:15,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8843 conditions, 1174 events. 606/1174 cut-off events. For 134171/134171 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6854 event pairs, 61 based on Foata normal form. 1/1174 useless extension candidates. Maximal degree in co-relation 8706. Up to 884 conditions per place. [2024-06-20 15:43:15,478 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 224 selfloop transitions, 84 changer transitions 0/311 dead transitions. [2024-06-20 15:43:15,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 311 transitions, 4695 flow [2024-06-20 15:43:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:15,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 15:43:15,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-20 15:43:15,481 INFO L175 Difference]: Start difference. First operand has 322 places, 290 transitions, 3289 flow. Second operand 11 states and 142 transitions. [2024-06-20 15:43:15,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 311 transitions, 4695 flow [2024-06-20 15:43:15,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 311 transitions, 4546 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:43:15,823 INFO L231 Difference]: Finished difference. Result has 323 places, 296 transitions, 3487 flow [2024-06-20 15:43:15,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3487, PETRI_PLACES=323, PETRI_TRANSITIONS=296} [2024-06-20 15:43:15,824 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-20 15:43:15,824 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 296 transitions, 3487 flow [2024-06-20 15:43:15,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:15,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:15,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:15,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 15:43:15,824 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)] === [2024-06-20 15:43:15,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash -799622798, now seen corresponding path program 9 times [2024-06-20 15:43:15,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:15,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136282138] [2024-06-20 15:43:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:15,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:17,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:17,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136282138] [2024-06-20 15:43:17,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136282138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:17,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:17,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876321271] [2024-06-20 15:43:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:17,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:17,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:17,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 296 transitions, 3487 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:17,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:17,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:17,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:18,216 INFO L124 PetriNetUnfolderBase]: 604/1171 cut-off events. [2024-06-20 15:43:18,216 INFO L125 PetriNetUnfolderBase]: For 132174/132174 co-relation queries the response was YES. [2024-06-20 15:43:18,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8768 conditions, 1171 events. 604/1171 cut-off events. For 132174/132174 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6822 event pairs, 61 based on Foata normal form. 1/1171 useless extension candidates. Maximal degree in co-relation 8630. Up to 936 conditions per place. [2024-06-20 15:43:18,227 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 241 selfloop transitions, 64 changer transitions 0/308 dead transitions. [2024-06-20 15:43:18,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 308 transitions, 4125 flow [2024-06-20 15:43:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:43:18,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 15:43:18,228 INFO L175 Difference]: Start difference. First operand has 323 places, 296 transitions, 3487 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:43:18,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 308 transitions, 4125 flow [2024-06-20 15:43:18,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 308 transitions, 3930 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-20 15:43:18,570 INFO L231 Difference]: Finished difference. Result has 328 places, 296 transitions, 3425 flow [2024-06-20 15:43:18,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3425, PETRI_PLACES=328, PETRI_TRANSITIONS=296} [2024-06-20 15:43:18,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-20 15:43:18,571 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 296 transitions, 3425 flow [2024-06-20 15:43:18,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:18,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:18,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:18,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 15:43:18,571 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)] === [2024-06-20 15:43:18,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1634129821, now seen corresponding path program 6 times [2024-06-20 15:43:18,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:18,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948442228] [2024-06-20 15:43:18,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:20,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:20,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948442228] [2024-06-20 15:43:20,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948442228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:20,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:20,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:20,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791069452] [2024-06-20 15:43:20,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:20,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:20,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:20,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:20,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:20,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:20,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 296 transitions, 3425 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:20,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:20,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:20,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:20,825 INFO L124 PetriNetUnfolderBase]: 601/1166 cut-off events. [2024-06-20 15:43:20,825 INFO L125 PetriNetUnfolderBase]: For 129129/129129 co-relation queries the response was YES. [2024-06-20 15:43:20,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8453 conditions, 1166 events. 601/1166 cut-off events. For 129129/129129 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6808 event pairs, 60 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 8314. Up to 955 conditions per place. [2024-06-20 15:43:20,837 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 53 changer transitions 0/309 dead transitions. [2024-06-20 15:43:20,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 309 transitions, 4067 flow [2024-06-20 15:43:20,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:43:20,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:43:20,838 INFO L175 Difference]: Start difference. First operand has 328 places, 296 transitions, 3425 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:43:20,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 309 transitions, 4067 flow [2024-06-20 15:43:21,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 309 transitions, 3908 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-20 15:43:21,170 INFO L231 Difference]: Finished difference. Result has 329 places, 296 transitions, 3376 flow [2024-06-20 15:43:21,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3376, PETRI_PLACES=329, PETRI_TRANSITIONS=296} [2024-06-20 15:43:21,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-20 15:43:21,170 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 296 transitions, 3376 flow [2024-06-20 15:43:21,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:21,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:21,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:21,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 15:43:21,171 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)] === [2024-06-20 15:43:21,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1634130100, now seen corresponding path program 10 times [2024-06-20 15:43:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:21,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026406935] [2024-06-20 15:43:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:22,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:22,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026406935] [2024-06-20 15:43:22,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026406935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:22,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:22,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:22,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673017232] [2024-06-20 15:43:22,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:22,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:22,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:22,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:22,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:22,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 296 transitions, 3376 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:22,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:22,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:22,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:23,172 INFO L124 PetriNetUnfolderBase]: 599/1165 cut-off events. [2024-06-20 15:43:23,173 INFO L125 PetriNetUnfolderBase]: For 121166/121166 co-relation queries the response was YES. [2024-06-20 15:43:23,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8300 conditions, 1165 events. 599/1165 cut-off events. For 121166/121166 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6820 event pairs, 60 based on Foata normal form. 1/1165 useless extension candidates. Maximal degree in co-relation 8160. Up to 875 conditions per place. [2024-06-20 15:43:23,185 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 226 selfloop transitions, 79 changer transitions 0/308 dead transitions. [2024-06-20 15:43:23,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 308 transitions, 4214 flow [2024-06-20 15:43:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 15:43:23,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-20 15:43:23,186 INFO L175 Difference]: Start difference. First operand has 329 places, 296 transitions, 3376 flow. Second operand 10 states and 131 transitions. [2024-06-20 15:43:23,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 308 transitions, 4214 flow [2024-06-20 15:43:23,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 308 transitions, 4000 flow, removed 29 selfloop flow, removed 13 redundant places. [2024-06-20 15:43:23,564 INFO L231 Difference]: Finished difference. Result has 326 places, 296 transitions, 3328 flow [2024-06-20 15:43:23,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3162, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3328, PETRI_PLACES=326, PETRI_TRANSITIONS=296} [2024-06-20 15:43:23,565 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-20 15:43:23,565 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 296 transitions, 3328 flow [2024-06-20 15:43:23,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:23,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:23,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:23,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 15:43:23,565 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)] === [2024-06-20 15:43:23,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:23,565 INFO L85 PathProgramCache]: Analyzing trace with hash -993554768, now seen corresponding path program 11 times [2024-06-20 15:43:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:23,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401441559] [2024-06-20 15:43:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:24,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:24,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401441559] [2024-06-20 15:43:24,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401441559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:24,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:24,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133331209] [2024-06-20 15:43:24,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:24,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:24,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:24,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:24,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:24,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:24,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 296 transitions, 3328 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:24,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:24,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:24,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:25,427 INFO L124 PetriNetUnfolderBase]: 602/1170 cut-off events. [2024-06-20 15:43:25,427 INFO L125 PetriNetUnfolderBase]: For 123536/123536 co-relation queries the response was YES. [2024-06-20 15:43:25,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8329 conditions, 1170 events. 602/1170 cut-off events. For 123536/123536 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6838 event pairs, 58 based on Foata normal form. 1/1170 useless extension candidates. Maximal degree in co-relation 8188. Up to 946 conditions per place. [2024-06-20 15:43:25,436 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 250 selfloop transitions, 58 changer transitions 0/311 dead transitions. [2024-06-20 15:43:25,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 311 transitions, 4240 flow [2024-06-20 15:43:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:43:25,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 15:43:25,437 INFO L175 Difference]: Start difference. First operand has 326 places, 296 transitions, 3328 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:43:25,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 311 transitions, 4240 flow [2024-06-20 15:43:25,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 311 transitions, 4059 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:43:25,823 INFO L231 Difference]: Finished difference. Result has 327 places, 298 transitions, 3334 flow [2024-06-20 15:43:25,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3153, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3334, PETRI_PLACES=327, PETRI_TRANSITIONS=298} [2024-06-20 15:43:25,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-20 15:43:25,823 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 298 transitions, 3334 flow [2024-06-20 15:43:25,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:25,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:25,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:25,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 15:43:25,824 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)] === [2024-06-20 15:43:25,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:25,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1828076950, now seen corresponding path program 12 times [2024-06-20 15:43:25,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:25,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060580914] [2024-06-20 15:43:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:25,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:27,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060580914] [2024-06-20 15:43:27,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060580914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:27,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:27,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861931093] [2024-06-20 15:43:27,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:27,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:27,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:27,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:27,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:27,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:27,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 298 transitions, 3334 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:27,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:27,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:27,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:27,977 INFO L124 PetriNetUnfolderBase]: 605/1175 cut-off events. [2024-06-20 15:43:27,977 INFO L125 PetriNetUnfolderBase]: For 123771/123771 co-relation queries the response was YES. [2024-06-20 15:43:27,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8346 conditions, 1175 events. 605/1175 cut-off events. For 123771/123771 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6886 event pairs, 60 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 8205. Up to 993 conditions per place. [2024-06-20 15:43:27,991 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 48 changer transitions 0/312 dead transitions. [2024-06-20 15:43:27,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 312 transitions, 4044 flow [2024-06-20 15:43:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:43:27,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 15:43:27,992 INFO L175 Difference]: Start difference. First operand has 327 places, 298 transitions, 3334 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:43:27,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 312 transitions, 4044 flow [2024-06-20 15:43:28,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 312 transitions, 3779 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-20 15:43:28,355 INFO L231 Difference]: Finished difference. Result has 327 places, 300 transitions, 3238 flow [2024-06-20 15:43:28,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3079, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3238, PETRI_PLACES=327, PETRI_TRANSITIONS=300} [2024-06-20 15:43:28,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-20 15:43:28,355 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 300 transitions, 3238 flow [2024-06-20 15:43:28,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:28,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:28,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:28,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 15:43:28,356 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)] === [2024-06-20 15:43:28,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:28,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1828278760, now seen corresponding path program 13 times [2024-06-20 15:43:28,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:28,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156174436] [2024-06-20 15:43:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:28,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:30,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:30,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156174436] [2024-06-20 15:43:30,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156174436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:30,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:30,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:30,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940621315] [2024-06-20 15:43:30,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:30,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:30,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:30,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:30,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:30,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:30,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 300 transitions, 3238 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:30,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:30,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:30,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:30,863 INFO L124 PetriNetUnfolderBase]: 603/1172 cut-off events. [2024-06-20 15:43:30,863 INFO L125 PetriNetUnfolderBase]: For 119892/119892 co-relation queries the response was YES. [2024-06-20 15:43:30,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8080 conditions, 1172 events. 603/1172 cut-off events. For 119892/119892 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6870 event pairs, 60 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 7939. Up to 990 conditions per place. [2024-06-20 15:43:30,872 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 47 changer transitions 0/312 dead transitions. [2024-06-20 15:43:30,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 312 transitions, 3884 flow [2024-06-20 15:43:30,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:43:30,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:43:30,873 INFO L175 Difference]: Start difference. First operand has 327 places, 300 transitions, 3238 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:43:30,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 312 transitions, 3884 flow [2024-06-20 15:43:31,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 312 transitions, 3709 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:31,261 INFO L231 Difference]: Finished difference. Result has 329 places, 300 transitions, 3162 flow [2024-06-20 15:43:31,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3162, PETRI_PLACES=329, PETRI_TRANSITIONS=300} [2024-06-20 15:43:31,261 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-20 15:43:31,261 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 300 transitions, 3162 flow [2024-06-20 15:43:31,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:31,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:31,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:31,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 15:43:31,262 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)] === [2024-06-20 15:43:31,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1939267676, now seen corresponding path program 11 times [2024-06-20 15:43:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:31,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009895807] [2024-06-20 15:43:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:31,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:32,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:32,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009895807] [2024-06-20 15:43:32,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009895807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:32,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:43:32,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342237594] [2024-06-20 15:43:32,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:32,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:43:32,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:43:32,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:43:32,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:32,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 300 transitions, 3162 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:32,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:32,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:32,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:33,241 INFO L124 PetriNetUnfolderBase]: 607/1180 cut-off events. [2024-06-20 15:43:33,242 INFO L125 PetriNetUnfolderBase]: For 127539/127539 co-relation queries the response was YES. [2024-06-20 15:43:33,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8114 conditions, 1180 events. 607/1180 cut-off events. For 127539/127539 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6938 event pairs, 68 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 7972. Up to 1008 conditions per place. [2024-06-20 15:43:33,253 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 269 selfloop transitions, 40 changer transitions 0/312 dead transitions. [2024-06-20 15:43:33,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 312 transitions, 3851 flow [2024-06-20 15:43:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 15:43:33,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 15:43:33,254 INFO L175 Difference]: Start difference. First operand has 329 places, 300 transitions, 3162 flow. Second operand 10 states and 119 transitions. [2024-06-20 15:43:33,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 312 transitions, 3851 flow [2024-06-20 15:43:33,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 312 transitions, 3713 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-20 15:43:33,628 INFO L231 Difference]: Finished difference. Result has 329 places, 302 transitions, 3164 flow [2024-06-20 15:43:33,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3164, PETRI_PLACES=329, PETRI_TRANSITIONS=302} [2024-06-20 15:43:33,628 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-20 15:43:33,628 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 302 transitions, 3164 flow [2024-06-20 15:43:33,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:33,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:33,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:33,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 15:43:33,629 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)] === [2024-06-20 15:43:33,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:33,629 INFO L85 PathProgramCache]: Analyzing trace with hash 13753806, now seen corresponding path program 12 times [2024-06-20 15:43:33,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:33,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059357483] [2024-06-20 15:43:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:34,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:34,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059357483] [2024-06-20 15:43:34,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059357483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:34,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:34,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:43:34,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200914305] [2024-06-20 15:43:34,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:34,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:43:34,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:43:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:43:35,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:35,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 302 transitions, 3164 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:35,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:35,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:35,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:35,473 INFO L124 PetriNetUnfolderBase]: 611/1188 cut-off events. [2024-06-20 15:43:35,473 INFO L125 PetriNetUnfolderBase]: For 130644/130644 co-relation queries the response was YES. [2024-06-20 15:43:35,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8183 conditions, 1188 events. 611/1188 cut-off events. For 130644/130644 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7003 event pairs, 66 based on Foata normal form. 2/1189 useless extension candidates. Maximal degree in co-relation 8040. Up to 1011 conditions per place. [2024-06-20 15:43:35,486 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 272 selfloop transitions, 39 changer transitions 0/314 dead transitions. [2024-06-20 15:43:35,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 314 transitions, 3852 flow [2024-06-20 15:43:35,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 15:43:35,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 15:43:35,486 INFO L175 Difference]: Start difference. First operand has 329 places, 302 transitions, 3164 flow. Second operand 10 states and 119 transitions. [2024-06-20 15:43:35,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 314 transitions, 3852 flow [2024-06-20 15:43:35,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 314 transitions, 3739 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-20 15:43:35,883 INFO L231 Difference]: Finished difference. Result has 332 places, 303 transitions, 3177 flow [2024-06-20 15:43:35,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3177, PETRI_PLACES=332, PETRI_TRANSITIONS=303} [2024-06-20 15:43:35,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-20 15:43:35,883 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 303 transitions, 3177 flow [2024-06-20 15:43:35,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:35,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:35,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:35,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 15:43:35,884 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)] === [2024-06-20 15:43:35,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1933905296, now seen corresponding path program 13 times [2024-06-20 15:43:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:35,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248304627] [2024-06-20 15:43:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:37,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:37,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248304627] [2024-06-20 15:43:37,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248304627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:37,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:37,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:43:37,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036556256] [2024-06-20 15:43:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:43:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:43:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:43:37,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:37,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 303 transitions, 3177 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:37,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:37,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:37,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:37,858 INFO L124 PetriNetUnfolderBase]: 615/1196 cut-off events. [2024-06-20 15:43:37,858 INFO L125 PetriNetUnfolderBase]: For 133376/133376 co-relation queries the response was YES. [2024-06-20 15:43:37,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8243 conditions, 1196 events. 615/1196 cut-off events. For 133376/133376 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7075 event pairs, 68 based on Foata normal form. 2/1197 useless extension candidates. Maximal degree in co-relation 8099. Up to 1018 conditions per place. [2024-06-20 15:43:37,868 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 268 selfloop transitions, 43 changer transitions 0/314 dead transitions. [2024-06-20 15:43:37,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 314 transitions, 3865 flow [2024-06-20 15:43:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 15:43:37,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-20 15:43:37,869 INFO L175 Difference]: Start difference. First operand has 332 places, 303 transitions, 3177 flow. Second operand 10 states and 121 transitions. [2024-06-20 15:43:37,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 314 transitions, 3865 flow [2024-06-20 15:43:38,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 314 transitions, 3749 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:38,315 INFO L231 Difference]: Finished difference. Result has 334 places, 304 transitions, 3197 flow [2024-06-20 15:43:38,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3197, PETRI_PLACES=334, PETRI_TRANSITIONS=304} [2024-06-20 15:43:38,316 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-20 15:43:38,316 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 304 transitions, 3197 flow [2024-06-20 15:43:38,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:38,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:38,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:38,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 15:43:38,316 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)] === [2024-06-20 15:43:38,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:38,317 INFO L85 PathProgramCache]: Analyzing trace with hash 213203466, now seen corresponding path program 14 times [2024-06-20 15:43:38,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:38,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196137329] [2024-06-20 15:43:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:38,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:39,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:39,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196137329] [2024-06-20 15:43:39,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196137329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:39,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:39,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:43:39,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170202585] [2024-06-20 15:43:39,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:39,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:43:39,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:39,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:43:39,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:43:40,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:40,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 304 transitions, 3197 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:40,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:40,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:40,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:40,613 INFO L124 PetriNetUnfolderBase]: 619/1204 cut-off events. [2024-06-20 15:43:40,613 INFO L125 PetriNetUnfolderBase]: For 136101/136101 co-relation queries the response was YES. [2024-06-20 15:43:40,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8309 conditions, 1204 events. 619/1204 cut-off events. For 136101/136101 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7133 event pairs, 68 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 8164. Up to 1017 conditions per place. [2024-06-20 15:43:40,626 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 265 selfloop transitions, 47 changer transitions 0/315 dead transitions. [2024-06-20 15:43:40,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 315 transitions, 3889 flow [2024-06-20 15:43:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:43:40,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:43:40,628 INFO L175 Difference]: Start difference. First operand has 334 places, 304 transitions, 3197 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:43:40,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 315 transitions, 3889 flow [2024-06-20 15:43:41,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 315 transitions, 3763 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:41,080 INFO L231 Difference]: Finished difference. Result has 336 places, 305 transitions, 3217 flow [2024-06-20 15:43:41,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3217, PETRI_PLACES=336, PETRI_TRANSITIONS=305} [2024-06-20 15:43:41,080 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-20 15:43:41,080 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 305 transitions, 3217 flow [2024-06-20 15:43:41,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:41,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:41,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:41,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 15:43:41,081 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)] === [2024-06-20 15:43:41,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash -56111648, now seen corresponding path program 15 times [2024-06-20 15:43:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:41,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216800380] [2024-06-20 15:43:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:41,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:42,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:42,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216800380] [2024-06-20 15:43:42,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216800380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:42,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:42,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:43:42,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235868236] [2024-06-20 15:43:42,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:42,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:43:42,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:42,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:43:42,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:43:42,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:42,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 305 transitions, 3217 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:42,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:42,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:42,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:43,200 INFO L124 PetriNetUnfolderBase]: 623/1212 cut-off events. [2024-06-20 15:43:43,200 INFO L125 PetriNetUnfolderBase]: For 138867/138867 co-relation queries the response was YES. [2024-06-20 15:43:43,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8375 conditions, 1212 events. 623/1212 cut-off events. For 138867/138867 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7174 event pairs, 68 based on Foata normal form. 2/1213 useless extension candidates. Maximal degree in co-relation 8229. Up to 971 conditions per place. [2024-06-20 15:43:43,212 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 244 selfloop transitions, 69 changer transitions 0/316 dead transitions. [2024-06-20 15:43:43,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 316 transitions, 3913 flow [2024-06-20 15:43:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 15:43:43,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:43:43,213 INFO L175 Difference]: Start difference. First operand has 336 places, 305 transitions, 3217 flow. Second operand 11 states and 132 transitions. [2024-06-20 15:43:43,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 316 transitions, 3913 flow [2024-06-20 15:43:43,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 316 transitions, 3777 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:43,712 INFO L231 Difference]: Finished difference. Result has 339 places, 306 transitions, 3273 flow [2024-06-20 15:43:43,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3273, PETRI_PLACES=339, PETRI_TRANSITIONS=306} [2024-06-20 15:43:43,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-20 15:43:43,713 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 306 transitions, 3273 flow [2024-06-20 15:43:43,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:43,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:43,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:43,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 15:43:43,713 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)] === [2024-06-20 15:43:43,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash 200604343, now seen corresponding path program 7 times [2024-06-20 15:43:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:43,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678699542] [2024-06-20 15:43:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:43,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:45,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:45,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678699542] [2024-06-20 15:43:45,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678699542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:45,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:45,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678895594] [2024-06-20 15:43:45,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:45,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:45,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:45,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:45,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:45,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 306 transitions, 3273 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:45,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:45,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:45,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:46,033 INFO L124 PetriNetUnfolderBase]: 630/1225 cut-off events. [2024-06-20 15:43:46,033 INFO L125 PetriNetUnfolderBase]: For 141261/141261 co-relation queries the response was YES. [2024-06-20 15:43:46,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8482 conditions, 1225 events. 630/1225 cut-off events. For 141261/141261 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7282 event pairs, 88 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 8335. Up to 1113 conditions per place. [2024-06-20 15:43:46,045 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 299 selfloop transitions, 18 changer transitions 0/320 dead transitions. [2024-06-20 15:43:46,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 320 transitions, 3988 flow [2024-06-20 15:43:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 15:43:46,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 15:43:46,046 INFO L175 Difference]: Start difference. First operand has 339 places, 306 transitions, 3273 flow. Second operand 11 states and 124 transitions. [2024-06-20 15:43:46,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 320 transitions, 3988 flow [2024-06-20 15:43:46,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 320 transitions, 3806 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:46,434 INFO L231 Difference]: Finished difference. Result has 342 places, 309 transitions, 3197 flow [2024-06-20 15:43:46,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3197, PETRI_PLACES=342, PETRI_TRANSITIONS=309} [2024-06-20 15:43:46,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-20 15:43:46,435 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 309 transitions, 3197 flow [2024-06-20 15:43:46,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:46,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:46,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:46,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 15:43:46,436 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)] === [2024-06-20 15:43:46,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash 19270008, now seen corresponding path program 14 times [2024-06-20 15:43:46,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:46,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577557310] [2024-06-20 15:43:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:46,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:48,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577557310] [2024-06-20 15:43:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577557310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:48,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:48,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:48,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782279526] [2024-06-20 15:43:48,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:48,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:48,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:48,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:48,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:48,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:48,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 309 transitions, 3197 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:48,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:48,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:48,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:48,821 INFO L124 PetriNetUnfolderBase]: 638/1240 cut-off events. [2024-06-20 15:43:48,821 INFO L125 PetriNetUnfolderBase]: For 142953/142953 co-relation queries the response was YES. [2024-06-20 15:43:48,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8582 conditions, 1240 events. 638/1240 cut-off events. For 142953/142953 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7389 event pairs, 70 based on Foata normal form. 1/1240 useless extension candidates. Maximal degree in co-relation 8433. Up to 1037 conditions per place. [2024-06-20 15:43:48,834 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 55 changer transitions 0/325 dead transitions. [2024-06-20 15:43:48,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 325 transitions, 4407 flow [2024-06-20 15:43:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:43:48,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 15:43:48,835 INFO L175 Difference]: Start difference. First operand has 342 places, 309 transitions, 3197 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:43:48,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 325 transitions, 4407 flow [2024-06-20 15:43:49,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 325 transitions, 4336 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:49,317 INFO L231 Difference]: Finished difference. Result has 345 places, 313 transitions, 3345 flow [2024-06-20 15:43:49,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3345, PETRI_PLACES=345, PETRI_TRANSITIONS=313} [2024-06-20 15:43:49,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-20 15:43:49,317 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 313 transitions, 3345 flow [2024-06-20 15:43:49,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:49,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:49,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:49,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 15:43:49,318 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)] === [2024-06-20 15:43:49,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1092778770, now seen corresponding path program 15 times [2024-06-20 15:43:49,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:49,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262294979] [2024-06-20 15:43:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:50,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262294979] [2024-06-20 15:43:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262294979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:50,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:50,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:50,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362503501] [2024-06-20 15:43:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:50,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:50,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:50,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:50,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 313 transitions, 3345 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:50,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:50,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:50,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:51,286 INFO L124 PetriNetUnfolderBase]: 646/1255 cut-off events. [2024-06-20 15:43:51,286 INFO L125 PetriNetUnfolderBase]: For 151580/151580 co-relation queries the response was YES. [2024-06-20 15:43:51,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8863 conditions, 1255 events. 646/1255 cut-off events. For 151580/151580 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7541 event pairs, 90 based on Foata normal form. 1/1255 useless extension candidates. Maximal degree in co-relation 8713. Up to 1135 conditions per place. [2024-06-20 15:43:51,298 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 303 selfloop transitions, 22 changer transitions 0/328 dead transitions. [2024-06-20 15:43:51,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 328 transitions, 4339 flow [2024-06-20 15:43:51,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:43:51,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:43:51,299 INFO L175 Difference]: Start difference. First operand has 345 places, 313 transitions, 3345 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:43:51,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 328 transitions, 4339 flow [2024-06-20 15:43:51,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 328 transitions, 4185 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:51,762 INFO L231 Difference]: Finished difference. Result has 348 places, 317 transitions, 3344 flow [2024-06-20 15:43:51,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3344, PETRI_PLACES=348, PETRI_TRANSITIONS=317} [2024-06-20 15:43:51,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-20 15:43:51,763 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 317 transitions, 3344 flow [2024-06-20 15:43:51,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:51,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:51,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:51,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 15:43:51,763 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)] === [2024-06-20 15:43:51,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:51,763 INFO L85 PathProgramCache]: Analyzing trace with hash 200596624, now seen corresponding path program 16 times [2024-06-20 15:43:51,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:51,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465396787] [2024-06-20 15:43:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:51,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:54,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:54,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465396787] [2024-06-20 15:43:54,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465396787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:54,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:54,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:54,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576826754] [2024-06-20 15:43:54,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:54,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:54,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:54,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:54,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:54,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:54,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 317 transitions, 3344 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:54,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:54,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:54,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:54,825 INFO L124 PetriNetUnfolderBase]: 644/1252 cut-off events. [2024-06-20 15:43:54,825 INFO L125 PetriNetUnfolderBase]: For 147474/147474 co-relation queries the response was YES. [2024-06-20 15:43:54,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8641 conditions, 1252 events. 644/1252 cut-off events. For 147474/147474 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7486 event pairs, 90 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 8490. Up to 1139 conditions per place. [2024-06-20 15:43:54,838 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 305 selfloop transitions, 19 changer transitions 0/327 dead transitions. [2024-06-20 15:43:54,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 327 transitions, 4014 flow [2024-06-20 15:43:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:54,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:54,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 15:43:54,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 15:43:54,839 INFO L175 Difference]: Start difference. First operand has 348 places, 317 transitions, 3344 flow. Second operand 11 states and 124 transitions. [2024-06-20 15:43:54,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 327 transitions, 4014 flow [2024-06-20 15:43:55,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 327 transitions, 3916 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-20 15:43:55,298 INFO L231 Difference]: Finished difference. Result has 352 places, 317 transitions, 3289 flow [2024-06-20 15:43:55,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3246, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3289, PETRI_PLACES=352, PETRI_TRANSITIONS=317} [2024-06-20 15:43:55,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-20 15:43:55,298 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 317 transitions, 3289 flow [2024-06-20 15:43:55,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:55,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:55,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:55,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 15:43:55,298 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)] === [2024-06-20 15:43:55,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1176534413, now seen corresponding path program 8 times [2024-06-20 15:43:55,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:55,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295815596] [2024-06-20 15:43:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:55,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:56,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:56,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295815596] [2024-06-20 15:43:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295815596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:56,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:56,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:56,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935424460] [2024-06-20 15:43:56,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:56,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:56,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:56,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:56,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 317 transitions, 3289 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:56,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:56,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:56,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:57,473 INFO L124 PetriNetUnfolderBase]: 665/1291 cut-off events. [2024-06-20 15:43:57,474 INFO L125 PetriNetUnfolderBase]: For 169775/169775 co-relation queries the response was YES. [2024-06-20 15:43:57,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9158 conditions, 1291 events. 665/1291 cut-off events. For 169775/169775 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7771 event pairs, 91 based on Foata normal form. 2/1292 useless extension candidates. Maximal degree in co-relation 9005. Up to 1146 conditions per place. [2024-06-20 15:43:57,486 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 311 selfloop transitions, 23 changer transitions 0/337 dead transitions. [2024-06-20 15:43:57,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 337 transitions, 4333 flow [2024-06-20 15:43:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 15:43:57,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-20 15:43:57,487 INFO L175 Difference]: Start difference. First operand has 352 places, 317 transitions, 3289 flow. Second operand 11 states and 128 transitions. [2024-06-20 15:43:57,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 337 transitions, 4333 flow [2024-06-20 15:43:58,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 337 transitions, 4288 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:43:58,031 INFO L231 Difference]: Finished difference. Result has 355 places, 323 transitions, 3434 flow [2024-06-20 15:43:58,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3434, PETRI_PLACES=355, PETRI_TRANSITIONS=323} [2024-06-20 15:43:58,032 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-20 15:43:58,032 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 323 transitions, 3434 flow [2024-06-20 15:43:58,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:58,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:58,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:58,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 15:43:58,032 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)] === [2024-06-20 15:43:58,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:58,033 INFO L85 PathProgramCache]: Analyzing trace with hash 199674242, now seen corresponding path program 17 times [2024-06-20 15:43:58,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:58,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540286569] [2024-06-20 15:43:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:58,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:59,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:59,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540286569] [2024-06-20 15:43:59,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540286569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:59,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:59,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:59,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078896994] [2024-06-20 15:43:59,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:59,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:59,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:59,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:59,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:59,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:43:59,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 323 transitions, 3434 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:59,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:59,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:43:59,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:00,312 INFO L124 PetriNetUnfolderBase]: 668/1298 cut-off events. [2024-06-20 15:44:00,312 INFO L125 PetriNetUnfolderBase]: For 167067/167067 co-relation queries the response was YES. [2024-06-20 15:44:00,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9301 conditions, 1298 events. 668/1298 cut-off events. For 167067/167067 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7838 event pairs, 91 based on Foata normal form. 1/1298 useless extension candidates. Maximal degree in co-relation 9145. Up to 1168 conditions per place. [2024-06-20 15:44:00,327 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 307 selfloop transitions, 26 changer transitions 0/336 dead transitions. [2024-06-20 15:44:00,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 336 transitions, 4183 flow [2024-06-20 15:44:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 15:44:00,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-20 15:44:00,328 INFO L175 Difference]: Start difference. First operand has 355 places, 323 transitions, 3434 flow. Second operand 11 states and 128 transitions. [2024-06-20 15:44:00,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 336 transitions, 4183 flow [2024-06-20 15:44:00,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 336 transitions, 4106 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-20 15:44:00,963 INFO L231 Difference]: Finished difference. Result has 361 places, 326 transitions, 3491 flow [2024-06-20 15:44:00,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3357, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3491, PETRI_PLACES=361, PETRI_TRANSITIONS=326} [2024-06-20 15:44:00,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-20 15:44:00,964 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 326 transitions, 3491 flow [2024-06-20 15:44:00,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:00,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:00,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:00,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 15:44:00,964 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)] === [2024-06-20 15:44:00,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash -55896167, now seen corresponding path program 9 times [2024-06-20 15:44:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674597904] [2024-06-20 15:44:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:02,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:02,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674597904] [2024-06-20 15:44:02,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674597904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:02,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:44:02,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523646722] [2024-06-20 15:44:02,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:02,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:44:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:44:02,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:44:02,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:02,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 326 transitions, 3491 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:02,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:02,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:02,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:02,638 INFO L124 PetriNetUnfolderBase]: 672/1306 cut-off events. [2024-06-20 15:44:02,638 INFO L125 PetriNetUnfolderBase]: For 176262/176262 co-relation queries the response was YES. [2024-06-20 15:44:02,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9373 conditions, 1306 events. 672/1306 cut-off events. For 176262/176262 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7911 event pairs, 71 based on Foata normal form. 2/1307 useless extension candidates. Maximal degree in co-relation 9214. Up to 956 conditions per place. [2024-06-20 15:44:02,653 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 232 selfloop transitions, 102 changer transitions 0/337 dead transitions. [2024-06-20 15:44:02,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 337 transitions, 4225 flow [2024-06-20 15:44:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 15:44:02,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-20 15:44:02,654 INFO L175 Difference]: Start difference. First operand has 361 places, 326 transitions, 3491 flow. Second operand 10 states and 129 transitions. [2024-06-20 15:44:02,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 337 transitions, 4225 flow [2024-06-20 15:44:03,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 337 transitions, 4138 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-20 15:44:03,318 INFO L231 Difference]: Finished difference. Result has 363 places, 327 transitions, 3658 flow [2024-06-20 15:44:03,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3404, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3658, PETRI_PLACES=363, PETRI_TRANSITIONS=327} [2024-06-20 15:44:03,318 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-20 15:44:03,318 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 327 transitions, 3658 flow [2024-06-20 15:44:03,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:03,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:03,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:03,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 15:44:03,319 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)] === [2024-06-20 15:44:03,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:03,319 INFO L85 PathProgramCache]: Analyzing trace with hash -55903886, now seen corresponding path program 18 times [2024-06-20 15:44:03,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:03,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478613005] [2024-06-20 15:44:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:03,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:05,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:05,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478613005] [2024-06-20 15:44:05,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478613005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:05,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:05,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:05,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001202008] [2024-06-20 15:44:05,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:05,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:05,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:05,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:05,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:05,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 327 transitions, 3658 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:05,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:05,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:05,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:05,970 INFO L124 PetriNetUnfolderBase]: 675/1311 cut-off events. [2024-06-20 15:44:05,971 INFO L125 PetriNetUnfolderBase]: For 172879/172879 co-relation queries the response was YES. [2024-06-20 15:44:05,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9577 conditions, 1311 events. 675/1311 cut-off events. For 172879/172879 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7961 event pairs, 71 based on Foata normal form. 1/1311 useless extension candidates. Maximal degree in co-relation 9418. Up to 966 conditions per place. [2024-06-20 15:44:05,986 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 233 selfloop transitions, 103 changer transitions 0/339 dead transitions. [2024-06-20 15:44:05,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 339 transitions, 4398 flow [2024-06-20 15:44:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:44:05,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 15:44:05,987 INFO L175 Difference]: Start difference. First operand has 363 places, 327 transitions, 3658 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:44:05,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 339 transitions, 4398 flow [2024-06-20 15:44:06,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 339 transitions, 4154 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-20 15:44:06,646 INFO L231 Difference]: Finished difference. Result has 366 places, 329 transitions, 3675 flow [2024-06-20 15:44:06,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3675, PETRI_PLACES=366, PETRI_TRANSITIONS=329} [2024-06-20 15:44:06,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-20 15:44:06,647 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 329 transitions, 3675 flow [2024-06-20 15:44:06,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:06,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:06,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:06,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 15:44:06,647 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)] === [2024-06-20 15:44:06,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:06,648 INFO L85 PathProgramCache]: Analyzing trace with hash 19471818, now seen corresponding path program 19 times [2024-06-20 15:44:06,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:06,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165205240] [2024-06-20 15:44:06,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:06,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:08,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165205240] [2024-06-20 15:44:08,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165205240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:08,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:08,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:08,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327068169] [2024-06-20 15:44:08,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:08,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:08,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:08,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:08,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:08,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 329 transitions, 3675 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:08,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:08,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:08,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:08,736 INFO L124 PetriNetUnfolderBase]: 673/1308 cut-off events. [2024-06-20 15:44:08,736 INFO L125 PetriNetUnfolderBase]: For 168185/168185 co-relation queries the response was YES. [2024-06-20 15:44:08,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9385 conditions, 1308 events. 673/1308 cut-off events. For 168185/168185 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7938 event pairs, 71 based on Foata normal form. 1/1308 useless extension candidates. Maximal degree in co-relation 9225. Up to 1115 conditions per place. [2024-06-20 15:44:08,751 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 286 selfloop transitions, 50 changer transitions 0/339 dead transitions. [2024-06-20 15:44:08,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 339 transitions, 4369 flow [2024-06-20 15:44:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 15:44:08,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:44:08,752 INFO L175 Difference]: Start difference. First operand has 366 places, 329 transitions, 3675 flow. Second operand 11 states and 132 transitions. [2024-06-20 15:44:08,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 339 transitions, 4369 flow [2024-06-20 15:44:09,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 339 transitions, 4119 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-20 15:44:09,329 INFO L231 Difference]: Finished difference. Result has 371 places, 329 transitions, 3530 flow [2024-06-20 15:44:09,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3530, PETRI_PLACES=371, PETRI_TRANSITIONS=329} [2024-06-20 15:44:09,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-20 15:44:09,330 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 329 transitions, 3530 flow [2024-06-20 15:44:09,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:09,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:09,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:09,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 15:44:09,330 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)] === [2024-06-20 15:44:09,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:09,330 INFO L85 PathProgramCache]: Analyzing trace with hash -48486857, now seen corresponding path program 10 times [2024-06-20 15:44:09,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:09,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091879279] [2024-06-20 15:44:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:09,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091879279] [2024-06-20 15:44:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091879279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:10,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831373133] [2024-06-20 15:44:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:10,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:10,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:10,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 329 transitions, 3530 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:10,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:10,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:10,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:11,298 INFO L124 PetriNetUnfolderBase]: 677/1316 cut-off events. [2024-06-20 15:44:11,298 INFO L125 PetriNetUnfolderBase]: For 178228/178228 co-relation queries the response was YES. [2024-06-20 15:44:11,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9355 conditions, 1316 events. 677/1316 cut-off events. For 178228/178228 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7977 event pairs, 71 based on Foata normal form. 2/1317 useless extension candidates. Maximal degree in co-relation 9194. Up to 1020 conditions per place. [2024-06-20 15:44:11,314 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 254 selfloop transitions, 85 changer transitions 0/342 dead transitions. [2024-06-20 15:44:11,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 342 transitions, 4280 flow [2024-06-20 15:44:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:44:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:44:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 15:44:11,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 15:44:11,315 INFO L175 Difference]: Start difference. First operand has 371 places, 329 transitions, 3530 flow. Second operand 12 states and 147 transitions. [2024-06-20 15:44:11,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 342 transitions, 4280 flow [2024-06-20 15:44:11,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 342 transitions, 4159 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 15:44:11,947 INFO L231 Difference]: Finished difference. Result has 373 places, 330 transitions, 3632 flow [2024-06-20 15:44:11,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3632, PETRI_PLACES=373, PETRI_TRANSITIONS=330} [2024-06-20 15:44:11,948 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-20 15:44:11,948 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 330 transitions, 3632 flow [2024-06-20 15:44:11,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:11,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:11,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:11,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 15:44:11,948 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)] === [2024-06-20 15:44:11,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash 220561068, now seen corresponding path program 20 times [2024-06-20 15:44:11,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:11,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538901282] [2024-06-20 15:44:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:13,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538901282] [2024-06-20 15:44:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538901282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:13,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:13,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:13,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561676072] [2024-06-20 15:44:13,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:13,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:13,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:13,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:13,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:13,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 330 transitions, 3632 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:13,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:13,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:13,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:14,478 INFO L124 PetriNetUnfolderBase]: 675/1313 cut-off events. [2024-06-20 15:44:14,478 INFO L125 PetriNetUnfolderBase]: For 167244/167244 co-relation queries the response was YES. [2024-06-20 15:44:14,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9301 conditions, 1313 events. 675/1313 cut-off events. For 167244/167244 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7970 event pairs, 73 based on Foata normal form. 1/1313 useless extension candidates. Maximal degree in co-relation 9139. Up to 1093 conditions per place. [2024-06-20 15:44:14,494 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 274 selfloop transitions, 63 changer transitions 0/340 dead transitions. [2024-06-20 15:44:14,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 340 transitions, 4328 flow [2024-06-20 15:44:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:44:14,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:44:14,495 INFO L175 Difference]: Start difference. First operand has 373 places, 330 transitions, 3632 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:44:14,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 340 transitions, 4328 flow [2024-06-20 15:44:15,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 340 transitions, 4086 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-20 15:44:15,129 INFO L231 Difference]: Finished difference. Result has 375 places, 330 transitions, 3521 flow [2024-06-20 15:44:15,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3521, PETRI_PLACES=375, PETRI_TRANSITIONS=330} [2024-06-20 15:44:15,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-20 15:44:15,130 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 330 transitions, 3521 flow [2024-06-20 15:44:15,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:15,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:15,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 15:44:15,130 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)] === [2024-06-20 15:44:15,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:15,133 INFO L85 PathProgramCache]: Analyzing trace with hash 200863813, now seen corresponding path program 11 times [2024-06-20 15:44:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:15,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347319993] [2024-06-20 15:44:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:16,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:16,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347319993] [2024-06-20 15:44:16,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347319993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:16,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:16,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:16,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171063530] [2024-06-20 15:44:16,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:16,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:16,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:16,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:16,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:16,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 330 transitions, 3521 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:16,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:16,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:16,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:17,139 INFO L124 PetriNetUnfolderBase]: 672/1308 cut-off events. [2024-06-20 15:44:17,139 INFO L125 PetriNetUnfolderBase]: For 161637/161637 co-relation queries the response was YES. [2024-06-20 15:44:17,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8886 conditions, 1308 events. 672/1308 cut-off events. For 161637/161637 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7949 event pairs, 92 based on Foata normal form. 2/1309 useless extension candidates. Maximal degree in co-relation 8723. Up to 1184 conditions per place. [2024-06-20 15:44:17,155 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 317 selfloop transitions, 21 changer transitions 0/341 dead transitions. [2024-06-20 15:44:17,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 341 transitions, 4221 flow [2024-06-20 15:44:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 15:44:17,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 15:44:17,156 INFO L175 Difference]: Start difference. First operand has 375 places, 330 transitions, 3521 flow. Second operand 11 states and 126 transitions. [2024-06-20 15:44:17,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 341 transitions, 4221 flow [2024-06-20 15:44:17,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 341 transitions, 4050 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-20 15:44:17,812 INFO L231 Difference]: Finished difference. Result has 377 places, 330 transitions, 3396 flow [2024-06-20 15:44:17,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3396, PETRI_PLACES=377, PETRI_TRANSITIONS=330} [2024-06-20 15:44:17,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-20 15:44:17,813 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 330 transitions, 3396 flow [2024-06-20 15:44:17,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:17,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:17,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:17,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 15:44:17,813 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)] === [2024-06-20 15:44:17,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:17,813 INFO L85 PathProgramCache]: Analyzing trace with hash -48754046, now seen corresponding path program 21 times [2024-06-20 15:44:17,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:17,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538614979] [2024-06-20 15:44:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:17,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:19,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:19,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538614979] [2024-06-20 15:44:19,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538614979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:19,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:19,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:19,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700866930] [2024-06-20 15:44:19,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:19,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:19,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:19,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:19,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 330 transitions, 3396 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:19,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:19,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:19,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:20,478 INFO L124 PetriNetUnfolderBase]: 670/1305 cut-off events. [2024-06-20 15:44:20,478 INFO L125 PetriNetUnfolderBase]: For 149177/149177 co-relation queries the response was YES. [2024-06-20 15:44:20,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8610 conditions, 1305 events. 670/1305 cut-off events. For 149177/149177 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7940 event pairs, 72 based on Foata normal form. 1/1305 useless extension candidates. Maximal degree in co-relation 8446. Up to 960 conditions per place. [2024-06-20 15:44:20,493 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 102 changer transitions 0/340 dead transitions. [2024-06-20 15:44:20,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 340 transitions, 4092 flow [2024-06-20 15:44:20,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:20,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:44:20,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 15:44:20,496 INFO L175 Difference]: Start difference. First operand has 377 places, 330 transitions, 3396 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:44:20,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 340 transitions, 4092 flow [2024-06-20 15:44:21,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 340 transitions, 4003 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-20 15:44:21,050 INFO L231 Difference]: Finished difference. Result has 378 places, 330 transitions, 3516 flow [2024-06-20 15:44:21,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3307, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3516, PETRI_PLACES=378, PETRI_TRANSITIONS=330} [2024-06-20 15:44:21,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2024-06-20 15:44:21,050 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 330 transitions, 3516 flow [2024-06-20 15:44:21,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:21,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:21,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 15:44:21,052 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)] === [2024-06-20 15:44:21,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1976907507, now seen corresponding path program 12 times [2024-06-20 15:44:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801955389] [2024-06-20 15:44:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:21,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:22,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:22,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801955389] [2024-06-20 15:44:22,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801955389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:22,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:22,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:22,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012041537] [2024-06-20 15:44:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:22,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:22,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:22,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:22,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:22,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 330 transitions, 3516 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:22,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:22,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:22,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:23,188 INFO L124 PetriNetUnfolderBase]: 674/1313 cut-off events. [2024-06-20 15:44:23,188 INFO L125 PetriNetUnfolderBase]: For 160164/160164 co-relation queries the response was YES. [2024-06-20 15:44:23,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 1313 events. 674/1313 cut-off events. For 160164/160164 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8008 event pairs, 70 based on Foata normal form. 2/1314 useless extension candidates. Maximal degree in co-relation 8699. Up to 997 conditions per place. [2024-06-20 15:44:23,204 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 254 selfloop transitions, 86 changer transitions 0/343 dead transitions. [2024-06-20 15:44:23,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 343 transitions, 4270 flow [2024-06-20 15:44:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:44:23,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 15:44:23,206 INFO L175 Difference]: Start difference. First operand has 378 places, 330 transitions, 3516 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:44:23,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 343 transitions, 4270 flow [2024-06-20 15:44:23,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 343 transitions, 4034 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:44:23,814 INFO L231 Difference]: Finished difference. Result has 378 places, 331 transitions, 3506 flow [2024-06-20 15:44:23,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3506, PETRI_PLACES=378, PETRI_TRANSITIONS=331} [2024-06-20 15:44:23,814 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2024-06-20 15:44:23,814 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 331 transitions, 3506 flow [2024-06-20 15:44:23,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:23,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:23,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:23,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 15:44:23,815 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)] === [2024-06-20 15:44:23,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1933689815, now seen corresponding path program 13 times [2024-06-20 15:44:23,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:23,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996788755] [2024-06-20 15:44:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:23,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:24,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:24,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996788755] [2024-06-20 15:44:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996788755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:24,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:44:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733065331] [2024-06-20 15:44:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:44:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:44:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:44:25,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:25,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 331 transitions, 3506 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:25,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:25,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:25,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:25,457 INFO L124 PetriNetUnfolderBase]: 694/1357 cut-off events. [2024-06-20 15:44:25,457 INFO L125 PetriNetUnfolderBase]: For 236456/236456 co-relation queries the response was YES. [2024-06-20 15:44:25,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1357 events. 694/1357 cut-off events. For 236456/236456 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8321 event pairs, 76 based on Foata normal form. 12/1368 useless extension candidates. Maximal degree in co-relation 9004. Up to 1122 conditions per place. [2024-06-20 15:44:25,473 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 293 selfloop transitions, 43 changer transitions 7/346 dead transitions. [2024-06-20 15:44:25,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 346 transitions, 4340 flow [2024-06-20 15:44:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 15:44:25,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-20 15:44:25,474 INFO L175 Difference]: Start difference. First operand has 378 places, 331 transitions, 3506 flow. Second operand 10 states and 127 transitions. [2024-06-20 15:44:25,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 346 transitions, 4340 flow [2024-06-20 15:44:26,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 346 transitions, 4124 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-20 15:44:26,038 INFO L231 Difference]: Finished difference. Result has 379 places, 329 transitions, 3400 flow [2024-06-20 15:44:26,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3290, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3400, PETRI_PLACES=379, PETRI_TRANSITIONS=329} [2024-06-20 15:44:26,039 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-20 15:44:26,039 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 329 transitions, 3400 flow [2024-06-20 15:44:26,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:26,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:26,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:26,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 15:44:26,039 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)] === [2024-06-20 15:44:26,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash 19479258, now seen corresponding path program 22 times [2024-06-20 15:44:26,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:26,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376697048] [2024-06-20 15:44:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:26,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:28,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:28,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376697048] [2024-06-20 15:44:28,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376697048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:28,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:28,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:28,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460430625] [2024-06-20 15:44:28,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:28,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:28,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:28,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:28,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 329 transitions, 3400 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:28,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:28,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:28,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:29,111 INFO L124 PetriNetUnfolderBase]: 668/1306 cut-off events. [2024-06-20 15:44:29,111 INFO L125 PetriNetUnfolderBase]: For 150098/150098 co-relation queries the response was YES. [2024-06-20 15:44:29,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8581 conditions, 1306 events. 668/1306 cut-off events. For 150098/150098 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7980 event pairs, 75 based on Foata normal form. 1/1306 useless extension candidates. Maximal degree in co-relation 8414. Up to 1077 conditions per place. [2024-06-20 15:44:29,126 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 276 selfloop transitions, 59 changer transitions 0/338 dead transitions. [2024-06-20 15:44:29,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 338 transitions, 4090 flow [2024-06-20 15:44:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:44:29,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:44:29,126 INFO L175 Difference]: Start difference. First operand has 379 places, 329 transitions, 3400 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:44:29,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 338 transitions, 4090 flow [2024-06-20 15:44:29,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 338 transitions, 3922 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-20 15:44:29,689 INFO L231 Difference]: Finished difference. Result has 381 places, 329 transitions, 3358 flow [2024-06-20 15:44:29,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3358, PETRI_PLACES=381, PETRI_TRANSITIONS=329} [2024-06-20 15:44:29,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-20 15:44:29,689 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 329 transitions, 3358 flow [2024-06-20 15:44:29,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:29,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:29,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 15:44:29,690 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)] === [2024-06-20 15:44:29,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1969279368, now seen corresponding path program 23 times [2024-06-20 15:44:29,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:29,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218283083] [2024-06-20 15:44:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:29,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:31,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:31,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218283083] [2024-06-20 15:44:31,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218283083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:31,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:31,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:31,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835784349] [2024-06-20 15:44:31,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:31,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:31,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:31,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:31,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:31,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 329 transitions, 3358 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:31,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:31,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:31,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:32,173 INFO L124 PetriNetUnfolderBase]: 666/1303 cut-off events. [2024-06-20 15:44:32,173 INFO L125 PetriNetUnfolderBase]: For 143423/143423 co-relation queries the response was YES. [2024-06-20 15:44:32,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8347 conditions, 1303 events. 666/1303 cut-off events. For 143423/143423 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7963 event pairs, 72 based on Foata normal form. 1/1303 useless extension candidates. Maximal degree in co-relation 8179. Up to 808 conditions per place. [2024-06-20 15:44:32,189 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 161 changer transitions 0/341 dead transitions. [2024-06-20 15:44:32,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 341 transitions, 4556 flow [2024-06-20 15:44:32,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 15:44:32,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 15:44:32,190 INFO L175 Difference]: Start difference. First operand has 381 places, 329 transitions, 3358 flow. Second operand 11 states and 143 transitions. [2024-06-20 15:44:32,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 341 transitions, 4556 flow [2024-06-20 15:44:32,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 341 transitions, 4388 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-20 15:44:32,754 INFO L231 Difference]: Finished difference. Result has 382 places, 329 transitions, 3521 flow [2024-06-20 15:44:32,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3194, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3521, PETRI_PLACES=382, PETRI_TRANSITIONS=329} [2024-06-20 15:44:32,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-20 15:44:32,755 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 329 transitions, 3521 flow [2024-06-20 15:44:32,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:32,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:32,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:32,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 15:44:32,756 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)] === [2024-06-20 15:44:32,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:32,756 INFO L85 PathProgramCache]: Analyzing trace with hash 292784499, now seen corresponding path program 14 times [2024-06-20 15:44:32,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:32,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450065241] [2024-06-20 15:44:32,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:32,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:34,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450065241] [2024-06-20 15:44:34,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450065241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:34,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:34,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221524041] [2024-06-20 15:44:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:34,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:34,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:34,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 329 transitions, 3521 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:34,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:34,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:34,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:34,788 INFO L124 PetriNetUnfolderBase]: 673/1316 cut-off events. [2024-06-20 15:44:34,788 INFO L125 PetriNetUnfolderBase]: For 152364/152364 co-relation queries the response was YES. [2024-06-20 15:44:34,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 1316 events. 673/1316 cut-off events. For 152364/152364 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8077 event pairs, 74 based on Foata normal form. 2/1317 useless extension candidates. Maximal degree in co-relation 8492. Up to 1114 conditions per place. [2024-06-20 15:44:34,803 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 52 changer transitions 0/343 dead transitions. [2024-06-20 15:44:34,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 343 transitions, 4297 flow [2024-06-20 15:44:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:34,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:44:34,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:44:34,804 INFO L175 Difference]: Start difference. First operand has 382 places, 329 transitions, 3521 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:44:34,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 343 transitions, 4297 flow [2024-06-20 15:44:35,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 343 transitions, 3983 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-20 15:44:35,386 INFO L231 Difference]: Finished difference. Result has 385 places, 332 transitions, 3396 flow [2024-06-20 15:44:35,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3396, PETRI_PLACES=385, PETRI_TRANSITIONS=332} [2024-06-20 15:44:35,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-20 15:44:35,387 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 332 transitions, 3396 flow [2024-06-20 15:44:35,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:35,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:35,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:35,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 15:44:35,387 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)] === [2024-06-20 15:44:35,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1930584755, now seen corresponding path program 15 times [2024-06-20 15:44:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:35,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202669370] [2024-06-20 15:44:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:36,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202669370] [2024-06-20 15:44:36,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202669370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:36,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:36,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:36,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543141845] [2024-06-20 15:44:36,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:36,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:36,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:36,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:36,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:36,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 332 transitions, 3396 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:36,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:36,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:36,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:37,401 INFO L124 PetriNetUnfolderBase]: 684/1337 cut-off events. [2024-06-20 15:44:37,401 INFO L125 PetriNetUnfolderBase]: For 172656/172656 co-relation queries the response was YES. [2024-06-20 15:44:37,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9028 conditions, 1337 events. 684/1337 cut-off events. For 172656/172656 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8220 event pairs, 75 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 8858. Up to 1092 conditions per place. [2024-06-20 15:44:37,417 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 282 selfloop transitions, 62 changer transitions 0/347 dead transitions. [2024-06-20 15:44:37,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 347 transitions, 4470 flow [2024-06-20 15:44:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:44:37,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 15:44:37,418 INFO L175 Difference]: Start difference. First operand has 385 places, 332 transitions, 3396 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:44:37,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 347 transitions, 4470 flow [2024-06-20 15:44:38,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 347 transitions, 4283 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-20 15:44:38,041 INFO L231 Difference]: Finished difference. Result has 388 places, 334 transitions, 3447 flow [2024-06-20 15:44:38,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3447, PETRI_PLACES=388, PETRI_TRANSITIONS=334} [2024-06-20 15:44:38,041 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-20 15:44:38,041 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 334 transitions, 3447 flow [2024-06-20 15:44:38,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:38,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:38,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:38,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 15:44:38,042 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)] === [2024-06-20 15:44:38,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash 524424941, now seen corresponding path program 16 times [2024-06-20 15:44:38,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:38,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139170984] [2024-06-20 15:44:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:39,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:39,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139170984] [2024-06-20 15:44:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139170984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:39,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:39,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:39,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19259574] [2024-06-20 15:44:39,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:39,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:39,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:39,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:39,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:39,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 334 transitions, 3447 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:39,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:39,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:39,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:39,958 INFO L124 PetriNetUnfolderBase]: 688/1345 cut-off events. [2024-06-20 15:44:39,959 INFO L125 PetriNetUnfolderBase]: For 175673/175673 co-relation queries the response was YES. [2024-06-20 15:44:39,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9088 conditions, 1345 events. 688/1345 cut-off events. For 175673/175673 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8276 event pairs, 93 based on Foata normal form. 2/1346 useless extension candidates. Maximal degree in co-relation 8917. Up to 1151 conditions per place. [2024-06-20 15:44:39,975 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 318 selfloop transitions, 28 changer transitions 0/349 dead transitions. [2024-06-20 15:44:39,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 349 transitions, 4477 flow [2024-06-20 15:44:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 15:44:39,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 15:44:39,976 INFO L175 Difference]: Start difference. First operand has 388 places, 334 transitions, 3447 flow. Second operand 11 states and 129 transitions. [2024-06-20 15:44:39,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 349 transitions, 4477 flow [2024-06-20 15:44:40,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 349 transitions, 4322 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-20 15:44:40,626 INFO L231 Difference]: Finished difference. Result has 391 places, 335 transitions, 3408 flow [2024-06-20 15:44:40,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3408, PETRI_PLACES=391, PETRI_TRANSITIONS=335} [2024-06-20 15:44:40,626 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-20 15:44:40,626 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 335 transitions, 3408 flow [2024-06-20 15:44:40,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:40,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:40,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:40,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 15:44:40,627 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)] === [2024-06-20 15:44:40,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:40,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1739750405, now seen corresponding path program 17 times [2024-06-20 15:44:40,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:40,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775931232] [2024-06-20 15:44:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:40,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:42,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:42,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775931232] [2024-06-20 15:44:42,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775931232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:42,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:42,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:42,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431727915] [2024-06-20 15:44:42,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:42,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:42,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:42,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:42,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:42,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:42,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 335 transitions, 3408 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:42,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:42,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:42,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:42,677 INFO L124 PetriNetUnfolderBase]: 692/1353 cut-off events. [2024-06-20 15:44:42,677 INFO L125 PetriNetUnfolderBase]: For 176727/176727 co-relation queries the response was YES. [2024-06-20 15:44:42,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9058 conditions, 1353 events. 692/1353 cut-off events. For 176727/176727 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8353 event pairs, 77 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 8887. Up to 1151 conditions per place. [2024-06-20 15:44:42,693 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 51 changer transitions 0/347 dead transitions. [2024-06-20 15:44:42,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 347 transitions, 4162 flow [2024-06-20 15:44:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:42,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:44:42,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:44:42,694 INFO L175 Difference]: Start difference. First operand has 391 places, 335 transitions, 3408 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:44:42,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 347 transitions, 4162 flow [2024-06-20 15:44:43,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 347 transitions, 3967 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-20 15:44:43,374 INFO L231 Difference]: Finished difference. Result has 391 places, 336 transitions, 3363 flow [2024-06-20 15:44:43,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3363, PETRI_PLACES=391, PETRI_TRANSITIONS=336} [2024-06-20 15:44:43,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-20 15:44:43,375 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 336 transitions, 3363 flow [2024-06-20 15:44:43,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:43,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:43,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:43,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 15:44:43,375 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)] === [2024-06-20 15:44:43,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:43,375 INFO L85 PathProgramCache]: Analyzing trace with hash 293043969, now seen corresponding path program 18 times [2024-06-20 15:44:43,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:43,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68769365] [2024-06-20 15:44:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:43,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68769365] [2024-06-20 15:44:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68769365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:44,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:44,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:44:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035936282] [2024-06-20 15:44:44,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:44,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:44:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:44,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:44:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:44:44,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:44,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 336 transitions, 3363 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:44,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:44,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:44,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:45,074 INFO L124 PetriNetUnfolderBase]: 689/1348 cut-off events. [2024-06-20 15:44:45,075 INFO L125 PetriNetUnfolderBase]: For 161573/161573 co-relation queries the response was YES. [2024-06-20 15:44:45,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8501 conditions, 1348 events. 689/1348 cut-off events. For 161573/161573 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8348 event pairs, 76 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 8332. Up to 1128 conditions per place. [2024-06-20 15:44:45,091 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 286 selfloop transitions, 57 changer transitions 0/346 dead transitions. [2024-06-20 15:44:45,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 346 transitions, 4071 flow [2024-06-20 15:44:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:44:45,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-20 15:44:45,092 INFO L175 Difference]: Start difference. First operand has 391 places, 336 transitions, 3363 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:44:45,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 346 transitions, 4071 flow [2024-06-20 15:44:45,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 346 transitions, 3851 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-20 15:44:45,642 INFO L231 Difference]: Finished difference. Result has 390 places, 336 transitions, 3263 flow [2024-06-20 15:44:45,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3263, PETRI_PLACES=390, PETRI_TRANSITIONS=336} [2024-06-20 15:44:45,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-20 15:44:45,642 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 336 transitions, 3263 flow [2024-06-20 15:44:45,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:45,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:45,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:45,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 15:44:45,642 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)] === [2024-06-20 15:44:45,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash 513373751, now seen corresponding path program 19 times [2024-06-20 15:44:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:45,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757106967] [2024-06-20 15:44:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:45,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:46,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:46,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757106967] [2024-06-20 15:44:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757106967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:46,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:44:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422563317] [2024-06-20 15:44:46,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:46,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:44:46,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:44:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:44:46,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:46,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 336 transitions, 3263 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:46,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:46,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:46,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:47,370 INFO L124 PetriNetUnfolderBase]: 693/1356 cut-off events. [2024-06-20 15:44:47,371 INFO L125 PetriNetUnfolderBase]: For 163089/163089 co-relation queries the response was YES. [2024-06-20 15:44:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8411 conditions, 1356 events. 693/1356 cut-off events. For 163089/163089 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8383 event pairs, 98 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 8242. Up to 1211 conditions per place. [2024-06-20 15:44:47,386 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 317 selfloop transitions, 27 changer transitions 0/347 dead transitions. [2024-06-20 15:44:47,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 347 transitions, 4016 flow [2024-06-20 15:44:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 15:44:47,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-20 15:44:47,387 INFO L175 Difference]: Start difference. First operand has 390 places, 336 transitions, 3263 flow. Second operand 10 states and 117 transitions. [2024-06-20 15:44:47,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 347 transitions, 4016 flow [2024-06-20 15:44:47,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 347 transitions, 3892 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 15:44:47,998 INFO L231 Difference]: Finished difference. Result has 391 places, 337 transitions, 3246 flow [2024-06-20 15:44:47,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3246, PETRI_PLACES=391, PETRI_TRANSITIONS=337} [2024-06-20 15:44:47,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-20 15:44:47,998 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 337 transitions, 3246 flow [2024-06-20 15:44:47,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:47,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:47,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:47,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 15:44:47,999 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)] === [2024-06-20 15:44:47,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1739758124, now seen corresponding path program 24 times [2024-06-20 15:44:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:47,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982018391] [2024-06-20 15:44:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:47,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:49,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982018391] [2024-06-20 15:44:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982018391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:49,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:49,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923009932] [2024-06-20 15:44:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:49,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:49,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:49,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:49,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:49,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 337 transitions, 3246 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:49,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:49,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:49,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:50,488 INFO L124 PetriNetUnfolderBase]: 696/1361 cut-off events. [2024-06-20 15:44:50,488 INFO L125 PetriNetUnfolderBase]: For 157201/157201 co-relation queries the response was YES. [2024-06-20 15:44:50,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8427 conditions, 1361 events. 696/1361 cut-off events. For 157201/157201 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8449 event pairs, 78 based on Foata normal form. 1/1361 useless extension candidates. Maximal degree in co-relation 8257. Up to 1144 conditions per place. [2024-06-20 15:44:50,504 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 287 selfloop transitions, 59 changer transitions 0/349 dead transitions. [2024-06-20 15:44:50,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 349 transitions, 4010 flow [2024-06-20 15:44:50,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:44:50,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 15:44:50,505 INFO L175 Difference]: Start difference. First operand has 391 places, 337 transitions, 3246 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:44:50,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 349 transitions, 4010 flow [2024-06-20 15:44:51,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 349 transitions, 3918 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-20 15:44:51,110 INFO L231 Difference]: Finished difference. Result has 393 places, 339 transitions, 3331 flow [2024-06-20 15:44:51,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3331, PETRI_PLACES=393, PETRI_TRANSITIONS=339} [2024-06-20 15:44:51,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-20 15:44:51,111 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 339 transitions, 3331 flow [2024-06-20 15:44:51,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:51,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:51,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:51,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 15:44:51,111 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)] === [2024-06-20 15:44:51,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 513383051, now seen corresponding path program 20 times [2024-06-20 15:44:51,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:51,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413692692] [2024-06-20 15:44:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:51,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:52,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:52,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413692692] [2024-06-20 15:44:52,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413692692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:52,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:52,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:44:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133414362] [2024-06-20 15:44:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:52,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:44:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:44:52,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:44:52,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:52,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 339 transitions, 3331 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:52,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:52,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:52,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:52,826 INFO L124 PetriNetUnfolderBase]: 693/1356 cut-off events. [2024-06-20 15:44:52,826 INFO L125 PetriNetUnfolderBase]: For 145914/145914 co-relation queries the response was YES. [2024-06-20 15:44:52,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8096 conditions, 1356 events. 693/1356 cut-off events. For 145914/145914 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8394 event pairs, 93 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 7926. Up to 1183 conditions per place. [2024-06-20 15:44:52,843 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 319 selfloop transitions, 28 changer transitions 0/350 dead transitions. [2024-06-20 15:44:52,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 350 transitions, 4049 flow [2024-06-20 15:44:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:52,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-20 15:44:52,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-20 15:44:52,844 INFO L175 Difference]: Start difference. First operand has 393 places, 339 transitions, 3331 flow. Second operand 10 states and 118 transitions. [2024-06-20 15:44:52,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 350 transitions, 4049 flow [2024-06-20 15:44:53,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 350 transitions, 3854 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-20 15:44:53,386 INFO L231 Difference]: Finished difference. Result has 393 places, 339 transitions, 3198 flow [2024-06-20 15:44:53,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3136, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3198, PETRI_PLACES=393, PETRI_TRANSITIONS=339} [2024-06-20 15:44:53,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-20 15:44:53,387 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 339 transitions, 3198 flow [2024-06-20 15:44:53,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:53,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:53,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:53,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 15:44:53,387 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)] === [2024-06-20 15:44:53,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1101975540, now seen corresponding path program 25 times [2024-06-20 15:44:53,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:53,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849601811] [2024-06-20 15:44:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:53,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:54,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849601811] [2024-06-20 15:44:54,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849601811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:54,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:54,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:44:54,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526433195] [2024-06-20 15:44:54,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:54,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:44:54,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:44:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:44:54,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:54,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 339 transitions, 3198 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:54,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:54,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:54,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:55,428 INFO L124 PetriNetUnfolderBase]: 691/1353 cut-off events. [2024-06-20 15:44:55,428 INFO L125 PetriNetUnfolderBase]: For 130068/130068 co-relation queries the response was YES. [2024-06-20 15:44:55,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7790 conditions, 1353 events. 691/1353 cut-off events. For 130068/130068 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8369 event pairs, 97 based on Foata normal form. 1/1353 useless extension candidates. Maximal degree in co-relation 7620. Up to 1211 conditions per place. [2024-06-20 15:44:55,443 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 311 selfloop transitions, 34 changer transitions 0/348 dead transitions. [2024-06-20 15:44:55,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 348 transitions, 3908 flow [2024-06-20 15:44:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 15:44:55,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 15:44:55,444 INFO L175 Difference]: Start difference. First operand has 393 places, 339 transitions, 3198 flow. Second operand 10 states and 119 transitions. [2024-06-20 15:44:55,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 348 transitions, 3908 flow [2024-06-20 15:44:55,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 348 transitions, 3804 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-20 15:44:55,981 INFO L231 Difference]: Finished difference. Result has 393 places, 339 transitions, 3176 flow [2024-06-20 15:44:55,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3176, PETRI_PLACES=393, PETRI_TRANSITIONS=339} [2024-06-20 15:44:55,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-20 15:44:55,981 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 339 transitions, 3176 flow [2024-06-20 15:44:55,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:55,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:55,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:55,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 15:44:55,982 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)] === [2024-06-20 15:44:55,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1739959934, now seen corresponding path program 26 times [2024-06-20 15:44:55,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:55,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913392717] [2024-06-20 15:44:55,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:55,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:57,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913392717] [2024-06-20 15:44:57,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913392717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:57,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:57,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:57,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134884496] [2024-06-20 15:44:57,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:57,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:57,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:57,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:57,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:44:57,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 339 transitions, 3176 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:57,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:57,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:44:57,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:58,440 INFO L124 PetriNetUnfolderBase]: 689/1350 cut-off events. [2024-06-20 15:44:58,441 INFO L125 PetriNetUnfolderBase]: For 119469/119469 co-relation queries the response was YES. [2024-06-20 15:44:58,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 1350 events. 689/1350 cut-off events. For 119469/119469 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8369 event pairs, 78 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 7417. Up to 1064 conditions per place. [2024-06-20 15:44:58,457 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 263 selfloop transitions, 84 changer transitions 0/350 dead transitions. [2024-06-20 15:44:58,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 350 transitions, 4152 flow [2024-06-20 15:44:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:58,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 15:44:58,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-20 15:44:58,458 INFO L175 Difference]: Start difference. First operand has 393 places, 339 transitions, 3176 flow. Second operand 11 states and 142 transitions. [2024-06-20 15:44:58,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 350 transitions, 4152 flow [2024-06-20 15:44:58,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 350 transitions, 3972 flow, removed 22 selfloop flow, removed 12 redundant places. [2024-06-20 15:44:58,997 INFO L231 Difference]: Finished difference. Result has 392 places, 339 transitions, 3173 flow [2024-06-20 15:44:58,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3000, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3173, PETRI_PLACES=392, PETRI_TRANSITIONS=339} [2024-06-20 15:44:58,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-20 15:44:58,998 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 339 transitions, 3173 flow [2024-06-20 15:44:58,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:58,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:58,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:58,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 15:44:58,998 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)] === [2024-06-20 15:44:58,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:58,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1739750684, now seen corresponding path program 27 times [2024-06-20 15:44:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606356563] [2024-06-20 15:44:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:00,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:00,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606356563] [2024-06-20 15:45:00,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606356563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:00,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:00,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:00,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561104150] [2024-06-20 15:45:00,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:00,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:00,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:00,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:00,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:00,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 339 transitions, 3173 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:00,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:00,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:00,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:01,212 INFO L124 PetriNetUnfolderBase]: 687/1347 cut-off events. [2024-06-20 15:45:01,212 INFO L125 PetriNetUnfolderBase]: For 109340/109340 co-relation queries the response was YES. [2024-06-20 15:45:01,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7457 conditions, 1347 events. 687/1347 cut-off events. For 109340/109340 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8339 event pairs, 78 based on Foata normal form. 1/1347 useless extension candidates. Maximal degree in co-relation 7287. Up to 1091 conditions per place. [2024-06-20 15:45:01,273 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 71 changer transitions 0/349 dead transitions. [2024-06-20 15:45:01,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 349 transitions, 3887 flow [2024-06-20 15:45:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-20 15:45:01,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-20 15:45:01,274 INFO L175 Difference]: Start difference. First operand has 392 places, 339 transitions, 3173 flow. Second operand 11 states and 139 transitions. [2024-06-20 15:45:01,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 349 transitions, 3887 flow [2024-06-20 15:45:01,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 349 transitions, 3589 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:01,696 INFO L231 Difference]: Finished difference. Result has 392 places, 339 transitions, 3022 flow [2024-06-20 15:45:01,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2875, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3022, PETRI_PLACES=392, PETRI_TRANSITIONS=339} [2024-06-20 15:45:01,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-20 15:45:01,697 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 339 transitions, 3022 flow [2024-06-20 15:45:01,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:01,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:01,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:01,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 15:45:01,697 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)] === [2024-06-20 15:45:01,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash 4379108, now seen corresponding path program 16 times [2024-06-20 15:45:01,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:01,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785440929] [2024-06-20 15:45:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:01,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:02,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:02,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785440929] [2024-06-20 15:45:02,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785440929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:02,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:02,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:45:02,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086417153] [2024-06-20 15:45:02,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:02,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:45:02,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:02,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:45:02,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:45:03,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:03,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 339 transitions, 3022 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:03,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:03,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:03,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:03,537 INFO L124 PetriNetUnfolderBase]: 684/1342 cut-off events. [2024-06-20 15:45:03,537 INFO L125 PetriNetUnfolderBase]: For 102331/102331 co-relation queries the response was YES. [2024-06-20 15:45:03,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6938 conditions, 1342 events. 684/1342 cut-off events. For 102331/102331 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8324 event pairs, 70 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 6768. Up to 1191 conditions per place. [2024-06-20 15:45:03,551 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 321 selfloop transitions, 31 changer transitions 0/355 dead transitions. [2024-06-20 15:45:03,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 355 transitions, 3774 flow [2024-06-20 15:45:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 15:45:03,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:45:03,552 INFO L175 Difference]: Start difference. First operand has 392 places, 339 transitions, 3022 flow. Second operand 11 states and 132 transitions. [2024-06-20 15:45:03,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 355 transitions, 3774 flow [2024-06-20 15:45:03,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 355 transitions, 3591 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:03,987 INFO L231 Difference]: Finished difference. Result has 393 places, 340 transitions, 2920 flow [2024-06-20 15:45:03,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2839, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2920, PETRI_PLACES=393, PETRI_TRANSITIONS=340} [2024-06-20 15:45:03,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-20 15:45:03,987 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 340 transitions, 2920 flow [2024-06-20 15:45:03,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:03,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:03,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:03,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 15:45:03,988 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)] === [2024-06-20 15:45:03,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1844761454, now seen corresponding path program 1 times [2024-06-20 15:45:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:03,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622200379] [2024-06-20 15:45:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:05,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:05,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622200379] [2024-06-20 15:45:05,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622200379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:05,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:05,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:05,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452775939] [2024-06-20 15:45:05,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:05,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:05,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:05,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:05,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 340 transitions, 2920 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:05,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:05,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:05,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:05,870 INFO L124 PetriNetUnfolderBase]: 725/1429 cut-off events. [2024-06-20 15:45:05,870 INFO L125 PetriNetUnfolderBase]: For 235991/235991 co-relation queries the response was YES. [2024-06-20 15:45:05,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8576 conditions, 1429 events. 725/1429 cut-off events. For 235991/235991 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8910 event pairs, 86 based on Foata normal form. 8/1436 useless extension candidates. Maximal degree in co-relation 8404. Up to 1166 conditions per place. [2024-06-20 15:45:05,887 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 325 selfloop transitions, 31 changer transitions 7/366 dead transitions. [2024-06-20 15:45:05,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 366 transitions, 4056 flow [2024-06-20 15:45:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 15:45:05,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-20 15:45:05,888 INFO L175 Difference]: Start difference. First operand has 393 places, 340 transitions, 2920 flow. Second operand 11 states and 142 transitions. [2024-06-20 15:45:05,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 366 transitions, 4056 flow [2024-06-20 15:45:06,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 366 transitions, 3866 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:06,743 INFO L231 Difference]: Finished difference. Result has 393 places, 338 transitions, 2783 flow [2024-06-20 15:45:06,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2783, PETRI_PLACES=393, PETRI_TRANSITIONS=338} [2024-06-20 15:45:06,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-20 15:45:06,744 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 338 transitions, 2783 flow [2024-06-20 15:45:06,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:06,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:06,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:06,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 15:45:06,744 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)] === [2024-06-20 15:45:06,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:06,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1203371248, now seen corresponding path program 2 times [2024-06-20 15:45:06,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:06,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186041267] [2024-06-20 15:45:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:06,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:07,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186041267] [2024-06-20 15:45:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186041267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:07,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:07,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:07,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143791064] [2024-06-20 15:45:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:07,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:07,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:07,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:07,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:08,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:08,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 338 transitions, 2783 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:08,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:08,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:08,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:08,633 INFO L124 PetriNetUnfolderBase]: 719/1419 cut-off events. [2024-06-20 15:45:08,633 INFO L125 PetriNetUnfolderBase]: For 237299/237299 co-relation queries the response was YES. [2024-06-20 15:45:08,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8374 conditions, 1419 events. 719/1419 cut-off events. For 237299/237299 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8845 event pairs, 80 based on Foata normal form. 8/1426 useless extension candidates. Maximal degree in co-relation 8204. Up to 1222 conditions per place. [2024-06-20 15:45:08,648 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 318 selfloop transitions, 27 changer transitions 12/360 dead transitions. [2024-06-20 15:45:08,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 360 transitions, 3575 flow [2024-06-20 15:45:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:45:08,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:45:08,649 INFO L175 Difference]: Start difference. First operand has 393 places, 338 transitions, 2783 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:45:08,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 360 transitions, 3575 flow [2024-06-20 15:45:09,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 360 transitions, 3471 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:09,466 INFO L231 Difference]: Finished difference. Result has 391 places, 335 transitions, 2721 flow [2024-06-20 15:45:09,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2721, PETRI_PLACES=391, PETRI_TRANSITIONS=335} [2024-06-20 15:45:09,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-20 15:45:09,466 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 335 transitions, 2721 flow [2024-06-20 15:45:09,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:09,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:09,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:09,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 15:45:09,466 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)] === [2024-06-20 15:45:09,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:09,471 INFO L85 PathProgramCache]: Analyzing trace with hash -399561318, now seen corresponding path program 3 times [2024-06-20 15:45:09,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:09,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333913083] [2024-06-20 15:45:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:09,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:10,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:10,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333913083] [2024-06-20 15:45:10,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333913083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:10,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:10,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265524852] [2024-06-20 15:45:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:10,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:10,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:10,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:10,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 335 transitions, 2721 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:10,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:10,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:10,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:11,364 INFO L124 PetriNetUnfolderBase]: 684/1350 cut-off events. [2024-06-20 15:45:11,365 INFO L125 PetriNetUnfolderBase]: For 168739/168739 co-relation queries the response was YES. [2024-06-20 15:45:11,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 1350 events. 684/1350 cut-off events. For 168739/168739 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8409 event pairs, 73 based on Foata normal form. 10/1359 useless extension candidates. Maximal degree in co-relation 6521. Up to 1148 conditions per place. [2024-06-20 15:45:11,380 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 312 selfloop transitions, 22 changer transitions 19/356 dead transitions. [2024-06-20 15:45:11,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 356 transitions, 3539 flow [2024-06-20 15:45:11,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:45:11,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:45:11,381 INFO L175 Difference]: Start difference. First operand has 391 places, 335 transitions, 2721 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:45:11,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 356 transitions, 3539 flow [2024-06-20 15:45:11,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 356 transitions, 3479 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 15:45:11,762 INFO L231 Difference]: Finished difference. Result has 387 places, 325 transitions, 2646 flow [2024-06-20 15:45:11,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2646, PETRI_PLACES=387, PETRI_TRANSITIONS=325} [2024-06-20 15:45:11,762 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-20 15:45:11,762 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 325 transitions, 2646 flow [2024-06-20 15:45:11,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:11,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:11,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:11,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 15:45:11,762 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)] === [2024-06-20 15:45:11,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:11,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1862695908, now seen corresponding path program 4 times [2024-06-20 15:45:11,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:11,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859939581] [2024-06-20 15:45:11,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:11,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:12,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:12,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859939581] [2024-06-20 15:45:12,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859939581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:12,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:12,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:12,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640957320] [2024-06-20 15:45:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:12,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:12,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:13,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:13,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 325 transitions, 2646 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:13,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:13,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:13,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:13,623 INFO L124 PetriNetUnfolderBase]: 656/1298 cut-off events. [2024-06-20 15:45:13,624 INFO L125 PetriNetUnfolderBase]: For 99211/99211 co-relation queries the response was YES. [2024-06-20 15:45:13,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6415 conditions, 1298 events. 656/1298 cut-off events. For 99211/99211 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8012 event pairs, 34 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 6249. Up to 1029 conditions per place. [2024-06-20 15:45:13,637 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 309 selfloop transitions, 34 changer transitions 0/346 dead transitions. [2024-06-20 15:45:13,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 346 transitions, 3394 flow [2024-06-20 15:45:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 15:45:13,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-20 15:45:13,639 INFO L175 Difference]: Start difference. First operand has 387 places, 325 transitions, 2646 flow. Second operand 11 states and 131 transitions. [2024-06-20 15:45:13,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 346 transitions, 3394 flow [2024-06-20 15:45:14,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 346 transitions, 3289 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:14,045 INFO L231 Difference]: Finished difference. Result has 378 places, 326 transitions, 2629 flow [2024-06-20 15:45:14,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2629, PETRI_PLACES=378, PETRI_TRANSITIONS=326} [2024-06-20 15:45:14,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2024-06-20 15:45:14,046 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 326 transitions, 2629 flow [2024-06-20 15:45:14,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:14,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:14,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:14,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 15:45:14,046 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)] === [2024-06-20 15:45:14,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:14,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1107489884, now seen corresponding path program 5 times [2024-06-20 15:45:14,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:14,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210728583] [2024-06-20 15:45:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:14,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:15,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:15,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210728583] [2024-06-20 15:45:15,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210728583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:15,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:15,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789511977] [2024-06-20 15:45:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:15,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:15,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:15,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:15,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 326 transitions, 2629 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:15,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:15,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:15,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:15,944 INFO L124 PetriNetUnfolderBase]: 660/1305 cut-off events. [2024-06-20 15:45:15,945 INFO L125 PetriNetUnfolderBase]: For 94347/94347 co-relation queries the response was YES. [2024-06-20 15:45:15,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6386 conditions, 1305 events. 660/1305 cut-off events. For 94347/94347 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8086 event pairs, 70 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 6224. Up to 1123 conditions per place. [2024-06-20 15:45:15,959 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 295 selfloop transitions, 44 changer transitions 0/342 dead transitions. [2024-06-20 15:45:15,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 342 transitions, 3359 flow [2024-06-20 15:45:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:45:15,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 15:45:15,960 INFO L175 Difference]: Start difference. First operand has 378 places, 326 transitions, 2629 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:45:15,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 342 transitions, 3359 flow [2024-06-20 15:45:16,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 342 transitions, 3281 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:16,333 INFO L231 Difference]: Finished difference. Result has 380 places, 327 transitions, 2661 flow [2024-06-20 15:45:16,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2551, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2661, PETRI_PLACES=380, PETRI_TRANSITIONS=327} [2024-06-20 15:45:16,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-20 15:45:16,333 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 327 transitions, 2661 flow [2024-06-20 15:45:16,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:16,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:16,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:16,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 15:45:16,333 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)] === [2024-06-20 15:45:16,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 363493164, now seen corresponding path program 6 times [2024-06-20 15:45:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:16,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831858646] [2024-06-20 15:45:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:18,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:18,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831858646] [2024-06-20 15:45:18,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831858646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:18,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:18,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:18,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594340530] [2024-06-20 15:45:18,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:18,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:18,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:18,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:18,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:18,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:18,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 327 transitions, 2661 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:18,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:18,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:18,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:19,002 INFO L124 PetriNetUnfolderBase]: 671/1326 cut-off events. [2024-06-20 15:45:19,002 INFO L125 PetriNetUnfolderBase]: For 112538/112538 co-relation queries the response was YES. [2024-06-20 15:45:19,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6755 conditions, 1326 events. 671/1326 cut-off events. For 112538/112538 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8241 event pairs, 71 based on Foata normal form. 2/1327 useless extension candidates. Maximal degree in co-relation 6592. Up to 1133 conditions per place. [2024-06-20 15:45:19,013 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 304 selfloop transitions, 39 changer transitions 0/346 dead transitions. [2024-06-20 15:45:19,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 346 transitions, 3675 flow [2024-06-20 15:45:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:45:19,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 15:45:19,014 INFO L175 Difference]: Start difference. First operand has 380 places, 327 transitions, 2661 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:45:19,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 346 transitions, 3675 flow [2024-06-20 15:45:19,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 346 transitions, 3575 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:19,475 INFO L231 Difference]: Finished difference. Result has 382 places, 329 transitions, 2681 flow [2024-06-20 15:45:19,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2681, PETRI_PLACES=382, PETRI_TRANSITIONS=329} [2024-06-20 15:45:19,475 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-20 15:45:19,475 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 329 transitions, 2681 flow [2024-06-20 15:45:19,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:19,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:19,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:19,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 15:45:19,476 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)] === [2024-06-20 15:45:19,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:19,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1278369944, now seen corresponding path program 7 times [2024-06-20 15:45:19,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:19,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257101935] [2024-06-20 15:45:19,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:19,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:20,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:20,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257101935] [2024-06-20 15:45:20,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257101935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:20,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:20,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:20,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160002] [2024-06-20 15:45:20,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:20,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:20,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:20,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 329 transitions, 2681 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:20,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:20,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:20,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:21,245 INFO L124 PetriNetUnfolderBase]: 683/1354 cut-off events. [2024-06-20 15:45:21,245 INFO L125 PetriNetUnfolderBase]: For 160728/160728 co-relation queries the response was YES. [2024-06-20 15:45:21,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6866 conditions, 1354 events. 683/1354 cut-off events. For 160728/160728 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8427 event pairs, 73 based on Foata normal form. 8/1361 useless extension candidates. Maximal degree in co-relation 6702. Up to 1171 conditions per place. [2024-06-20 15:45:21,262 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 308 selfloop transitions, 24 changer transitions 13/348 dead transitions. [2024-06-20 15:45:21,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 348 transitions, 3445 flow [2024-06-20 15:45:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 15:45:21,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-20 15:45:21,263 INFO L175 Difference]: Start difference. First operand has 382 places, 329 transitions, 2681 flow. Second operand 11 states and 131 transitions. [2024-06-20 15:45:21,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 348 transitions, 3445 flow [2024-06-20 15:45:21,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 348 transitions, 3371 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 15:45:21,682 INFO L231 Difference]: Finished difference. Result has 386 places, 324 transitions, 2611 flow [2024-06-20 15:45:21,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2611, PETRI_PLACES=386, PETRI_TRANSITIONS=324} [2024-06-20 15:45:21,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-20 15:45:21,683 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 324 transitions, 2611 flow [2024-06-20 15:45:21,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:21,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:21,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:21,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 15:45:21,683 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)] === [2024-06-20 15:45:21,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:21,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1572535354, now seen corresponding path program 8 times [2024-06-20 15:45:21,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:21,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104567192] [2024-06-20 15:45:21,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:21,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:22,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:22,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:22,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104567192] [2024-06-20 15:45:22,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104567192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:22,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:22,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:22,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832021081] [2024-06-20 15:45:22,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:22,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:22,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:22,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:22,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:22,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 324 transitions, 2611 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:22,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:22,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:22,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:23,440 INFO L124 PetriNetUnfolderBase]: 669/1332 cut-off events. [2024-06-20 15:45:23,440 INFO L125 PetriNetUnfolderBase]: For 163064/163064 co-relation queries the response was YES. [2024-06-20 15:45:23,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 1332 events. 669/1332 cut-off events. For 163064/163064 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8285 event pairs, 76 based on Foata normal form. 10/1341 useless extension candidates. Maximal degree in co-relation 6357. Up to 1125 conditions per place. [2024-06-20 15:45:23,454 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 297 selfloop transitions, 36 changer transitions 6/342 dead transitions. [2024-06-20 15:45:23,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 342 transitions, 3373 flow [2024-06-20 15:45:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:45:23,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 15:45:23,455 INFO L175 Difference]: Start difference. First operand has 386 places, 324 transitions, 2611 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:45:23,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 342 transitions, 3373 flow [2024-06-20 15:45:23,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 342 transitions, 3311 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-20 15:45:23,882 INFO L231 Difference]: Finished difference. Result has 382 places, 321 transitions, 2607 flow [2024-06-20 15:45:23,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2607, PETRI_PLACES=382, PETRI_TRANSITIONS=321} [2024-06-20 15:45:23,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-20 15:45:23,882 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 321 transitions, 2607 flow [2024-06-20 15:45:23,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:23,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:23,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:23,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 15:45:23,883 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)] === [2024-06-20 15:45:23,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1749786844, now seen corresponding path program 9 times [2024-06-20 15:45:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547746296] [2024-06-20 15:45:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:25,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547746296] [2024-06-20 15:45:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547746296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:25,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:25,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782327426] [2024-06-20 15:45:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:25,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:25,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:25,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:25,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 321 transitions, 2607 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:25,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:25,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:25,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:25,617 INFO L124 PetriNetUnfolderBase]: 664/1323 cut-off events. [2024-06-20 15:45:25,617 INFO L125 PetriNetUnfolderBase]: For 144348/144348 co-relation queries the response was YES. [2024-06-20 15:45:25,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6467 conditions, 1323 events. 664/1323 cut-off events. For 144348/144348 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8223 event pairs, 68 based on Foata normal form. 8/1330 useless extension candidates. Maximal degree in co-relation 6303. Up to 1137 conditions per place. [2024-06-20 15:45:25,631 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 302 selfloop transitions, 20 changer transitions 16/341 dead transitions. [2024-06-20 15:45:25,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 341 transitions, 3359 flow [2024-06-20 15:45:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 15:45:25,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-20 15:45:25,632 INFO L175 Difference]: Start difference. First operand has 382 places, 321 transitions, 2607 flow. Second operand 11 states and 131 transitions. [2024-06-20 15:45:25,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 341 transitions, 3359 flow [2024-06-20 15:45:26,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 341 transitions, 3279 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:26,021 INFO L231 Difference]: Finished difference. Result has 381 places, 315 transitions, 2519 flow [2024-06-20 15:45:26,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2527, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2519, PETRI_PLACES=381, PETRI_TRANSITIONS=315} [2024-06-20 15:45:26,021 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-20 15:45:26,021 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 315 transitions, 2519 flow [2024-06-20 15:45:26,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:26,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:26,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:26,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 15:45:26,021 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)] === [2024-06-20 15:45:26,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:26,022 INFO L85 PathProgramCache]: Analyzing trace with hash -207777068, now seen corresponding path program 1 times [2024-06-20 15:45:26,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:26,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936524767] [2024-06-20 15:45:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:26,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:28,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:28,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936524767] [2024-06-20 15:45:28,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936524767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:28,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:28,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:28,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547663198] [2024-06-20 15:45:28,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:28,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:28,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:28,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:28,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:28,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:28,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 315 transitions, 2519 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:28,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:28,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:28,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:29,036 INFO L124 PetriNetUnfolderBase]: 647/1290 cut-off events. [2024-06-20 15:45:29,036 INFO L125 PetriNetUnfolderBase]: For 146314/146314 co-relation queries the response was YES. [2024-06-20 15:45:29,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6329 conditions, 1290 events. 647/1290 cut-off events. For 146314/146314 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7954 event pairs, 74 based on Foata normal form. 8/1297 useless extension candidates. Maximal degree in co-relation 6165. Up to 1111 conditions per place. [2024-06-20 15:45:29,046 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 294 selfloop transitions, 28 changer transitions 9/334 dead transitions. [2024-06-20 15:45:29,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 334 transitions, 3267 flow [2024-06-20 15:45:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-20 15:45:29,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-20 15:45:29,047 INFO L175 Difference]: Start difference. First operand has 381 places, 315 transitions, 2519 flow. Second operand 12 states and 143 transitions. [2024-06-20 15:45:29,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 334 transitions, 3267 flow [2024-06-20 15:45:29,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 334 transitions, 3215 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 15:45:29,468 INFO L231 Difference]: Finished difference. Result has 376 places, 312 transitions, 2504 flow [2024-06-20 15:45:29,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2504, PETRI_PLACES=376, PETRI_TRANSITIONS=312} [2024-06-20 15:45:29,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-20 15:45:29,469 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 312 transitions, 2504 flow [2024-06-20 15:45:29,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:29,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:29,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:29,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 15:45:29,469 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:29,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:29,469 INFO L85 PathProgramCache]: Analyzing trace with hash -201281948, now seen corresponding path program 2 times [2024-06-20 15:45:29,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:29,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115208855] [2024-06-20 15:45:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:29,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:30,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:30,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115208855] [2024-06-20 15:45:30,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115208855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:30,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:30,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:30,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866541224] [2024-06-20 15:45:30,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:30,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:30,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:30,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:30,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:31,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:31,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 312 transitions, 2504 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:31,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:31,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:31,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:31,610 INFO L124 PetriNetUnfolderBase]: 660/1321 cut-off events. [2024-06-20 15:45:31,610 INFO L125 PetriNetUnfolderBase]: For 184772/184772 co-relation queries the response was YES. [2024-06-20 15:45:31,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 1321 events. 660/1321 cut-off events. For 184772/184772 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8167 event pairs, 80 based on Foata normal form. 6/1326 useless extension candidates. Maximal degree in co-relation 7301. Up to 1091 conditions per place. [2024-06-20 15:45:31,628 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 297 selfloop transitions, 28 changer transitions 7/335 dead transitions. [2024-06-20 15:45:31,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 335 transitions, 3542 flow [2024-06-20 15:45:31,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:31,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 15:45:31,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-20 15:45:31,629 INFO L175 Difference]: Start difference. First operand has 376 places, 312 transitions, 2504 flow. Second operand 12 states and 146 transitions. [2024-06-20 15:45:31,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 335 transitions, 3542 flow [2024-06-20 15:45:32,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 335 transitions, 3478 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:32,144 INFO L231 Difference]: Finished difference. Result has 374 places, 309 transitions, 2482 flow [2024-06-20 15:45:32,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2482, PETRI_PLACES=374, PETRI_TRANSITIONS=309} [2024-06-20 15:45:32,144 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2024-06-20 15:45:32,144 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 309 transitions, 2482 flow [2024-06-20 15:45:32,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:32,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:32,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:32,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 15:45:32,144 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:32,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:32,145 INFO L85 PathProgramCache]: Analyzing trace with hash 369933848, now seen corresponding path program 3 times [2024-06-20 15:45:32,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:32,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799808094] [2024-06-20 15:45:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:32,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:34,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799808094] [2024-06-20 15:45:34,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799808094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:34,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:34,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:34,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674795392] [2024-06-20 15:45:34,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:34,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:34,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:34,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:34,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:34,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 309 transitions, 2482 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:34,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:34,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:34,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:34,863 INFO L124 PetriNetUnfolderBase]: 635/1266 cut-off events. [2024-06-20 15:45:34,863 INFO L125 PetriNetUnfolderBase]: For 137683/137683 co-relation queries the response was YES. [2024-06-20 15:45:34,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6224 conditions, 1266 events. 635/1266 cut-off events. For 137683/137683 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7798 event pairs, 70 based on Foata normal form. 8/1273 useless extension candidates. Maximal degree in co-relation 6063. Up to 1064 conditions per place. [2024-06-20 15:45:34,876 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 290 selfloop transitions, 28 changer transitions 7/328 dead transitions. [2024-06-20 15:45:34,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 328 transitions, 3218 flow [2024-06-20 15:45:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-20 15:45:34,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:45:34,877 INFO L175 Difference]: Start difference. First operand has 374 places, 309 transitions, 2482 flow. Second operand 12 states and 144 transitions. [2024-06-20 15:45:34,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 328 transitions, 3218 flow [2024-06-20 15:45:35,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 328 transitions, 3160 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:35,279 INFO L231 Difference]: Finished difference. Result has 372 places, 306 transitions, 2461 flow [2024-06-20 15:45:35,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2461, PETRI_PLACES=372, PETRI_TRANSITIONS=306} [2024-06-20 15:45:35,279 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-20 15:45:35,279 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 306 transitions, 2461 flow [2024-06-20 15:45:35,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:35,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:35,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:35,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-20 15:45:35,280 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:35,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash 462854836, now seen corresponding path program 10 times [2024-06-20 15:45:35,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:35,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174121364] [2024-06-20 15:45:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:35,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174121364] [2024-06-20 15:45:36,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174121364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:36,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:36,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:36,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235739003] [2024-06-20 15:45:36,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:36,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:36,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:36,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:36,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 306 transitions, 2461 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:36,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:36,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:36,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:37,186 INFO L124 PetriNetUnfolderBase]: 630/1260 cut-off events. [2024-06-20 15:45:37,186 INFO L125 PetriNetUnfolderBase]: For 136040/136040 co-relation queries the response was YES. [2024-06-20 15:45:37,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6165 conditions, 1260 events. 630/1260 cut-off events. For 136040/136040 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7739 event pairs, 72 based on Foata normal form. 8/1267 useless extension candidates. Maximal degree in co-relation 6005. Up to 1033 conditions per place. [2024-06-20 15:45:37,199 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 278 selfloop transitions, 32 changer transitions 12/325 dead transitions. [2024-06-20 15:45:37,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 325 transitions, 3220 flow [2024-06-20 15:45:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:37,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:45:37,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 15:45:37,200 INFO L175 Difference]: Start difference. First operand has 372 places, 306 transitions, 2461 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:45:37,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 325 transitions, 3220 flow [2024-06-20 15:45:37,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 325 transitions, 3158 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 15:45:37,581 INFO L231 Difference]: Finished difference. Result has 369 places, 303 transitions, 2444 flow [2024-06-20 15:45:37,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2444, PETRI_PLACES=369, PETRI_TRANSITIONS=303} [2024-06-20 15:45:37,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-20 15:45:37,582 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 303 transitions, 2444 flow [2024-06-20 15:45:37,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:37,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:37,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:37,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-20 15:45:37,582 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:37,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:37,583 INFO L85 PathProgramCache]: Analyzing trace with hash 462677206, now seen corresponding path program 11 times [2024-06-20 15:45:37,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:37,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734231448] [2024-06-20 15:45:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:37,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:38,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:38,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734231448] [2024-06-20 15:45:38,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734231448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:38,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:38,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:38,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65786239] [2024-06-20 15:45:38,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:38,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:38,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:38,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:38,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:38,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:38,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 303 transitions, 2444 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:38,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:38,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:38,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:39,405 INFO L124 PetriNetUnfolderBase]: 614/1228 cut-off events. [2024-06-20 15:45:39,405 INFO L125 PetriNetUnfolderBase]: For 132814/132814 co-relation queries the response was YES. [2024-06-20 15:45:39,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5993 conditions, 1228 events. 614/1228 cut-off events. For 132814/132814 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7544 event pairs, 62 based on Foata normal form. 8/1235 useless extension candidates. Maximal degree in co-relation 5833. Up to 1034 conditions per place. [2024-06-20 15:45:39,419 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 276 selfloop transitions, 27 changer transitions 14/320 dead transitions. [2024-06-20 15:45:39,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 320 transitions, 3146 flow [2024-06-20 15:45:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 15:45:39,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 15:45:39,420 INFO L175 Difference]: Start difference. First operand has 369 places, 303 transitions, 2444 flow. Second operand 11 states and 129 transitions. [2024-06-20 15:45:39,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 320 transitions, 3146 flow [2024-06-20 15:45:39,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 320 transitions, 3068 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-20 15:45:39,809 INFO L231 Difference]: Finished difference. Result has 368 places, 297 transitions, 2376 flow [2024-06-20 15:45:39,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2366, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2376, PETRI_PLACES=368, PETRI_TRANSITIONS=297} [2024-06-20 15:45:39,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-20 15:45:39,810 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 297 transitions, 2376 flow [2024-06-20 15:45:39,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:39,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:39,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:39,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-20 15:45:39,810 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:39,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1720823116, now seen corresponding path program 12 times [2024-06-20 15:45:39,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:39,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738578686] [2024-06-20 15:45:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:39,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:41,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738578686] [2024-06-20 15:45:41,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738578686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:41,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:41,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:41,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506150110] [2024-06-20 15:45:41,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:41,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:41,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:41,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 297 transitions, 2376 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:41,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:41,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:41,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:41,942 INFO L124 PetriNetUnfolderBase]: 592/1182 cut-off events. [2024-06-20 15:45:41,942 INFO L125 PetriNetUnfolderBase]: For 90145/90145 co-relation queries the response was YES. [2024-06-20 15:45:41,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5795 conditions, 1182 events. 592/1182 cut-off events. For 90145/90145 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7223 event pairs, 62 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 5636. Up to 971 conditions per place. [2024-06-20 15:45:41,954 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 52 changer transitions 0/311 dead transitions. [2024-06-20 15:45:41,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 311 transitions, 3042 flow [2024-06-20 15:45:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:45:41,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:45:41,955 INFO L175 Difference]: Start difference. First operand has 368 places, 297 transitions, 2376 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:45:41,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 311 transitions, 3042 flow [2024-06-20 15:45:42,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 311 transitions, 2963 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-20 15:45:42,245 INFO L231 Difference]: Finished difference. Result has 359 places, 298 transitions, 2427 flow [2024-06-20 15:45:42,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2427, PETRI_PLACES=359, PETRI_TRANSITIONS=298} [2024-06-20 15:45:42,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-20 15:45:42,246 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 298 transitions, 2427 flow [2024-06-20 15:45:42,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:42,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:42,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:42,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-20 15:45:42,246 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:42,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1942468156, now seen corresponding path program 13 times [2024-06-20 15:45:42,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:42,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025642784] [2024-06-20 15:45:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:43,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:43,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025642784] [2024-06-20 15:45:43,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025642784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:43,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:43,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:43,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765957493] [2024-06-20 15:45:43,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:43,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:43,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:43,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:43,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:43,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:43,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 298 transitions, 2427 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:43,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:43,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:43,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:44,391 INFO L124 PetriNetUnfolderBase]: 596/1190 cut-off events. [2024-06-20 15:45:44,392 INFO L125 PetriNetUnfolderBase]: For 87499/87499 co-relation queries the response was YES. [2024-06-20 15:45:44,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5866 conditions, 1190 events. 596/1190 cut-off events. For 87499/87499 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7261 event pairs, 62 based on Foata normal form. 2/1191 useless extension candidates. Maximal degree in co-relation 5712. Up to 979 conditions per place. [2024-06-20 15:45:44,403 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 261 selfloop transitions, 48 changer transitions 0/312 dead transitions. [2024-06-20 15:45:44,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 312 transitions, 3097 flow [2024-06-20 15:45:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:45:44,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 15:45:44,404 INFO L175 Difference]: Start difference. First operand has 359 places, 298 transitions, 2427 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:45:44,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 312 transitions, 3097 flow [2024-06-20 15:45:44,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 312 transitions, 2977 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:44,711 INFO L231 Difference]: Finished difference. Result has 361 places, 299 transitions, 2431 flow [2024-06-20 15:45:44,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2431, PETRI_PLACES=361, PETRI_TRANSITIONS=299} [2024-06-20 15:45:44,711 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-20 15:45:44,712 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 299 transitions, 2431 flow [2024-06-20 15:45:44,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:44,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:44,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:44,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-20 15:45:44,712 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:44,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash 875082352, now seen corresponding path program 14 times [2024-06-20 15:45:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:44,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140612635] [2024-06-20 15:45:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:44,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:45,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:45,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140612635] [2024-06-20 15:45:45,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140612635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:45,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:45,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:45,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776861389] [2024-06-20 15:45:45,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:45,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:45,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:46,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:46,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 299 transitions, 2431 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:46,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:46,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:46,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:46,609 INFO L124 PetriNetUnfolderBase]: 600/1198 cut-off events. [2024-06-20 15:45:46,609 INFO L125 PetriNetUnfolderBase]: For 88933/88933 co-relation queries the response was YES. [2024-06-20 15:45:46,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5905 conditions, 1198 events. 600/1198 cut-off events. For 88933/88933 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7296 event pairs, 64 based on Foata normal form. 2/1199 useless extension candidates. Maximal degree in co-relation 5750. Up to 945 conditions per place. [2024-06-20 15:45:46,621 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 70 changer transitions 0/313 dead transitions. [2024-06-20 15:45:46,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 313 transitions, 3105 flow [2024-06-20 15:45:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-20 15:45:46,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-20 15:45:46,622 INFO L175 Difference]: Start difference. First operand has 361 places, 299 transitions, 2431 flow. Second operand 11 states and 139 transitions. [2024-06-20 15:45:46,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 313 transitions, 3105 flow [2024-06-20 15:45:46,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 313 transitions, 2991 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:46,926 INFO L231 Difference]: Finished difference. Result has 363 places, 300 transitions, 2487 flow [2024-06-20 15:45:46,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2487, PETRI_PLACES=363, PETRI_TRANSITIONS=300} [2024-06-20 15:45:46,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-20 15:45:46,926 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 300 transitions, 2487 flow [2024-06-20 15:45:46,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:46,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:46,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:46,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-20 15:45:46,927 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:46,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash 874904722, now seen corresponding path program 15 times [2024-06-20 15:45:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:46,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277565366] [2024-06-20 15:45:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:46,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:48,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:48,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277565366] [2024-06-20 15:45:48,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277565366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:48,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:48,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:48,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266896760] [2024-06-20 15:45:48,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:48,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:48,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:48,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:48,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:48,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:48,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 300 transitions, 2487 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:48,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:48,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:48,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:48,834 INFO L124 PetriNetUnfolderBase]: 626/1252 cut-off events. [2024-06-20 15:45:48,834 INFO L125 PetriNetUnfolderBase]: For 148097/148097 co-relation queries the response was YES. [2024-06-20 15:45:48,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7184 conditions, 1252 events. 626/1252 cut-off events. For 148097/148097 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7670 event pairs, 76 based on Foata normal form. 2/1253 useless extension candidates. Maximal degree in co-relation 7028. Up to 915 conditions per place. [2024-06-20 15:45:48,847 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 243 selfloop transitions, 73 changer transitions 0/319 dead transitions. [2024-06-20 15:45:48,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 319 transitions, 3469 flow [2024-06-20 15:45:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-20 15:45:48,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-20 15:45:48,848 INFO L175 Difference]: Start difference. First operand has 363 places, 300 transitions, 2487 flow. Second operand 11 states and 144 transitions. [2024-06-20 15:45:48,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 319 transitions, 3469 flow [2024-06-20 15:45:49,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 319 transitions, 3309 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:49,369 INFO L231 Difference]: Finished difference. Result has 365 places, 301 transitions, 2505 flow [2024-06-20 15:45:49,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2505, PETRI_PLACES=365, PETRI_TRANSITIONS=301} [2024-06-20 15:45:49,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-20 15:45:49,369 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 301 transitions, 2505 flow [2024-06-20 15:45:49,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:49,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:49,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:49,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-20 15:45:49,370 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:49,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1013067442, now seen corresponding path program 16 times [2024-06-20 15:45:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:49,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100138490] [2024-06-20 15:45:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:49,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:50,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:50,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100138490] [2024-06-20 15:45:50,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100138490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:50,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:50,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551422851] [2024-06-20 15:45:50,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:50,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:50,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:50,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 301 transitions, 2505 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:50,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:50,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:50,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:51,183 INFO L124 PetriNetUnfolderBase]: 638/1280 cut-off events. [2024-06-20 15:45:51,184 INFO L125 PetriNetUnfolderBase]: For 193249/193249 co-relation queries the response was YES. [2024-06-20 15:45:51,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7317 conditions, 1280 events. 638/1280 cut-off events. For 193249/193249 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7854 event pairs, 74 based on Foata normal form. 8/1287 useless extension candidates. Maximal degree in co-relation 7160. Up to 1092 conditions per place. [2024-06-20 15:45:51,199 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 277 selfloop transitions, 23 changer transitions 16/319 dead transitions. [2024-06-20 15:45:51,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 319 transitions, 3215 flow [2024-06-20 15:45:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 15:45:51,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 15:45:51,200 INFO L175 Difference]: Start difference. First operand has 365 places, 301 transitions, 2505 flow. Second operand 11 states and 129 transitions. [2024-06-20 15:45:51,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 319 transitions, 3215 flow [2024-06-20 15:45:51,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 319 transitions, 3047 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:51,732 INFO L231 Difference]: Finished difference. Result has 367 places, 295 transitions, 2350 flow [2024-06-20 15:45:51,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2350, PETRI_PLACES=367, PETRI_TRANSITIONS=295} [2024-06-20 15:45:51,732 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-20 15:45:51,732 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 295 transitions, 2350 flow [2024-06-20 15:45:51,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:51,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:51,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:51,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-20 15:45:51,732 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:51,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:51,733 INFO L85 PathProgramCache]: Analyzing trace with hash -842072062, now seen corresponding path program 17 times [2024-06-20 15:45:51,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:51,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781500392] [2024-06-20 15:45:51,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:51,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:52,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781500392] [2024-06-20 15:45:52,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781500392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:52,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:52,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351023287] [2024-06-20 15:45:52,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:52,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:52,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:53,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:53,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 295 transitions, 2350 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:53,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:53,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:53,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:53,572 INFO L124 PetriNetUnfolderBase]: 594/1184 cut-off events. [2024-06-20 15:45:53,572 INFO L125 PetriNetUnfolderBase]: For 93191/93191 co-relation queries the response was YES. [2024-06-20 15:45:53,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5822 conditions, 1184 events. 594/1184 cut-off events. For 93191/93191 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7212 event pairs, 64 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 5664. Up to 1019 conditions per place. [2024-06-20 15:45:53,584 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 40 changer transitions 0/309 dead transitions. [2024-06-20 15:45:53,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 309 transitions, 3020 flow [2024-06-20 15:45:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 15:45:53,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:45:53,585 INFO L175 Difference]: Start difference. First operand has 367 places, 295 transitions, 2350 flow. Second operand 11 states and 132 transitions. [2024-06-20 15:45:53,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 309 transitions, 3020 flow [2024-06-20 15:45:53,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 309 transitions, 2968 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:53,913 INFO L231 Difference]: Finished difference. Result has 361 places, 296 transitions, 2412 flow [2024-06-20 15:45:53,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2412, PETRI_PLACES=361, PETRI_TRANSITIONS=296} [2024-06-20 15:45:53,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-20 15:45:53,914 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 296 transitions, 2412 flow [2024-06-20 15:45:53,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:53,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:53,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:53,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-20 15:45:53,914 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:53,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:53,914 INFO L85 PathProgramCache]: Analyzing trace with hash 628910986, now seen corresponding path program 18 times [2024-06-20 15:45:53,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:53,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742763517] [2024-06-20 15:45:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:55,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742763517] [2024-06-20 15:45:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742763517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:55,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:55,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712968804] [2024-06-20 15:45:55,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:55,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:55,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:55,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 296 transitions, 2412 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:55,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:55,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:55,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:55,773 INFO L124 PetriNetUnfolderBase]: 627/1251 cut-off events. [2024-06-20 15:45:55,773 INFO L125 PetriNetUnfolderBase]: For 163739/163739 co-relation queries the response was YES. [2024-06-20 15:45:55,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7460 conditions, 1251 events. 627/1251 cut-off events. For 163739/163739 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7652 event pairs, 75 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 7304. Up to 1013 conditions per place. [2024-06-20 15:45:55,785 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 271 selfloop transitions, 42 changer transitions 0/316 dead transitions. [2024-06-20 15:45:55,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 316 transitions, 3422 flow [2024-06-20 15:45:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:45:55,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 15:45:55,786 INFO L175 Difference]: Start difference. First operand has 361 places, 296 transitions, 2412 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:45:55,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 316 transitions, 3422 flow [2024-06-20 15:45:56,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 316 transitions, 3318 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:56,411 INFO L231 Difference]: Finished difference. Result has 363 places, 298 transitions, 2458 flow [2024-06-20 15:45:56,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2458, PETRI_PLACES=363, PETRI_TRANSITIONS=298} [2024-06-20 15:45:56,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-20 15:45:56,411 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 298 transitions, 2458 flow [2024-06-20 15:45:56,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:56,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:56,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:56,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-20 15:45:56,412 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:56,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:56,412 INFO L85 PathProgramCache]: Analyzing trace with hash -835815952, now seen corresponding path program 19 times [2024-06-20 15:45:56,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:56,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903988384] [2024-06-20 15:45:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903988384] [2024-06-20 15:45:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903988384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:57,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:57,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561932940] [2024-06-20 15:45:57,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:57,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:57,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:57,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:45:57,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 298 transitions, 2458 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:57,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:57,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:45:57,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:58,218 INFO L124 PetriNetUnfolderBase]: 614/1228 cut-off events. [2024-06-20 15:45:58,218 INFO L125 PetriNetUnfolderBase]: For 151114/151114 co-relation queries the response was YES. [2024-06-20 15:45:58,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 1228 events. 614/1228 cut-off events. For 151114/151114 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7531 event pairs, 68 based on Foata normal form. 10/1237 useless extension candidates. Maximal degree in co-relation 5950. Up to 1031 conditions per place. [2024-06-20 15:45:58,231 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 269 selfloop transitions, 36 changer transitions 6/314 dead transitions. [2024-06-20 15:45:58,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 314 transitions, 3156 flow [2024-06-20 15:45:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:45:58,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:45:58,232 INFO L175 Difference]: Start difference. First operand has 363 places, 298 transitions, 2458 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:45:58,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 314 transitions, 3156 flow [2024-06-20 15:45:58,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 314 transitions, 3055 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-20 15:45:58,593 INFO L231 Difference]: Finished difference. Result has 367 places, 295 transitions, 2413 flow [2024-06-20 15:45:58,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2413, PETRI_PLACES=367, PETRI_TRANSITIONS=295} [2024-06-20 15:45:58,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-20 15:45:58,594 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 295 transitions, 2413 flow [2024-06-20 15:45:58,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:58,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:58,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:58,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-20 15:45:58,594 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:58,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1111264656, now seen corresponding path program 4 times [2024-06-20 15:45:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:58,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672143414] [2024-06-20 15:45:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:58,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:00,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:00,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672143414] [2024-06-20 15:46:00,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672143414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:00,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:00,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:00,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894248366] [2024-06-20 15:46:00,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:00,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:00,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:00,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:00,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:00,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 295 transitions, 2413 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:00,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:00,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:00,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:00,736 INFO L124 PetriNetUnfolderBase]: 609/1223 cut-off events. [2024-06-20 15:46:00,736 INFO L125 PetriNetUnfolderBase]: For 137353/137353 co-relation queries the response was YES. [2024-06-20 15:46:00,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 1223 events. 609/1223 cut-off events. For 137353/137353 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7468 event pairs, 70 based on Foata normal form. 8/1230 useless extension candidates. Maximal degree in co-relation 5885. Up to 945 conditions per place. [2024-06-20 15:46:00,749 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 233 selfloop transitions, 68 changer transitions 10/314 dead transitions. [2024-06-20 15:46:00,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 314 transitions, 3117 flow [2024-06-20 15:46:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-20 15:46:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-20 15:46:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 168 transitions. [2024-06-20 15:46:00,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:46:00,750 INFO L175 Difference]: Start difference. First operand has 367 places, 295 transitions, 2413 flow. Second operand 14 states and 168 transitions. [2024-06-20 15:46:00,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 314 transitions, 3117 flow [2024-06-20 15:46:01,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 314 transitions, 3029 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:01,079 INFO L231 Difference]: Finished difference. Result has 369 places, 289 transitions, 2428 flow [2024-06-20 15:46:01,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2428, PETRI_PLACES=369, PETRI_TRANSITIONS=289} [2024-06-20 15:46:01,080 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-20 15:46:01,080 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 289 transitions, 2428 flow [2024-06-20 15:46:01,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:01,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:01,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:01,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-20 15:46:01,080 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:01,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1712533592, now seen corresponding path program 5 times [2024-06-20 15:46:01,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:01,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364735067] [2024-06-20 15:46:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:01,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:03,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:03,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364735067] [2024-06-20 15:46:03,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364735067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:03,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:03,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:03,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227804549] [2024-06-20 15:46:03,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:03,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:03,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:03,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:03,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:03,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 289 transitions, 2428 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:03,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:03,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:03,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:04,262 INFO L124 PetriNetUnfolderBase]: 595/1197 cut-off events. [2024-06-20 15:46:04,263 INFO L125 PetriNetUnfolderBase]: For 121879/121879 co-relation queries the response was YES. [2024-06-20 15:46:04,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5990 conditions, 1197 events. 595/1197 cut-off events. For 121879/121879 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7291 event pairs, 64 based on Foata normal form. 6/1202 useless extension candidates. Maximal degree in co-relation 5831. Up to 941 conditions per place. [2024-06-20 15:46:04,277 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 63 changer transitions 10/306 dead transitions. [2024-06-20 15:46:04,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 306 transitions, 3100 flow [2024-06-20 15:46:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-20 15:46:04,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:46:04,278 INFO L175 Difference]: Start difference. First operand has 369 places, 289 transitions, 2428 flow. Second operand 12 states and 144 transitions. [2024-06-20 15:46:04,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 306 transitions, 3100 flow [2024-06-20 15:46:04,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 306 transitions, 2952 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-20 15:46:04,621 INFO L231 Difference]: Finished difference. Result has 365 places, 286 transitions, 2391 flow [2024-06-20 15:46:04,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2391, PETRI_PLACES=365, PETRI_TRANSITIONS=286} [2024-06-20 15:46:04,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-20 15:46:04,621 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 286 transitions, 2391 flow [2024-06-20 15:46:04,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:04,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:04,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:04,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-20 15:46:04,622 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:04,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:04,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1203250460, now seen corresponding path program 6 times [2024-06-20 15:46:04,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:04,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495481475] [2024-06-20 15:46:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:04,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:07,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:07,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495481475] [2024-06-20 15:46:07,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495481475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:07,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:07,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:07,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579054232] [2024-06-20 15:46:07,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:07,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:07,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:07,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:07,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 286 transitions, 2391 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:07,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:07,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:07,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:08,350 INFO L124 PetriNetUnfolderBase]: 592/1188 cut-off events. [2024-06-20 15:46:08,350 INFO L125 PetriNetUnfolderBase]: For 138801/138801 co-relation queries the response was YES. [2024-06-20 15:46:08,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 1188 events. 592/1188 cut-off events. For 138801/138801 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7216 event pairs, 68 based on Foata normal form. 8/1195 useless extension candidates. Maximal degree in co-relation 5805. Up to 1002 conditions per place. [2024-06-20 15:46:08,363 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 258 selfloop transitions, 29 changer transitions 13/303 dead transitions. [2024-06-20 15:46:08,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 303 transitions, 3069 flow [2024-06-20 15:46:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-20 15:46:08,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-20 15:46:08,364 INFO L175 Difference]: Start difference. First operand has 365 places, 286 transitions, 2391 flow. Second operand 12 states and 142 transitions. [2024-06-20 15:46:08,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 303 transitions, 3069 flow [2024-06-20 15:46:08,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 303 transitions, 2939 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:46:08,677 INFO L231 Difference]: Finished difference. Result has 362 places, 280 transitions, 2279 flow [2024-06-20 15:46:08,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2279, PETRI_PLACES=362, PETRI_TRANSITIONS=280} [2024-06-20 15:46:08,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-20 15:46:08,677 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 280 transitions, 2279 flow [2024-06-20 15:46:08,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:08,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:08,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:08,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-20 15:46:08,678 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:08,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:08,678 INFO L85 PathProgramCache]: Analyzing trace with hash 513903954, now seen corresponding path program 7 times [2024-06-20 15:46:08,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:08,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917856813] [2024-06-20 15:46:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:08,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:10,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917856813] [2024-06-20 15:46:10,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917856813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:10,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:10,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:10,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574387417] [2024-06-20 15:46:10,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:10,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:10,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:10,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:10,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:10,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 280 transitions, 2279 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:10,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:10,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:10,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:11,077 INFO L124 PetriNetUnfolderBase]: 580/1170 cut-off events. [2024-06-20 15:46:11,078 INFO L125 PetriNetUnfolderBase]: For 135030/135030 co-relation queries the response was YES. [2024-06-20 15:46:11,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5805 conditions, 1170 events. 580/1170 cut-off events. For 135030/135030 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7079 event pairs, 70 based on Foata normal form. 8/1177 useless extension candidates. Maximal degree in co-relation 5647. Up to 909 conditions per place. [2024-06-20 15:46:11,089 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 43 changer transitions 16/297 dead transitions. [2024-06-20 15:46:11,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 297 transitions, 2945 flow [2024-06-20 15:46:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:46:11,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-20 15:46:11,090 INFO L175 Difference]: Start difference. First operand has 362 places, 280 transitions, 2279 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:46:11,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 297 transitions, 2945 flow [2024-06-20 15:46:11,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 297 transitions, 2879 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 15:46:11,435 INFO L231 Difference]: Finished difference. Result has 356 places, 271 transitions, 2241 flow [2024-06-20 15:46:11,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2241, PETRI_PLACES=356, PETRI_TRANSITIONS=271} [2024-06-20 15:46:11,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-20 15:46:11,435 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 271 transitions, 2241 flow [2024-06-20 15:46:11,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:11,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:11,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:11,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-20 15:46:11,435 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:11,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash 635590680, now seen corresponding path program 8 times [2024-06-20 15:46:11,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366589753] [2024-06-20 15:46:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:13,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:13,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366589753] [2024-06-20 15:46:13,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366589753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:13,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:13,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:13,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141601370] [2024-06-20 15:46:13,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:13,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:13,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:13,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:13,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 271 transitions, 2241 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:13,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:13,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:13,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:14,020 INFO L124 PetriNetUnfolderBase]: 581/1181 cut-off events. [2024-06-20 15:46:14,021 INFO L125 PetriNetUnfolderBase]: For 169827/169827 co-relation queries the response was YES. [2024-06-20 15:46:14,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6830 conditions, 1181 events. 581/1181 cut-off events. For 169827/169827 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7128 event pairs, 78 based on Foata normal form. 6/1186 useless extension candidates. Maximal degree in co-relation 6675. Up to 955 conditions per place. [2024-06-20 15:46:14,033 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 252 selfloop transitions, 29 changer transitions 8/292 dead transitions. [2024-06-20 15:46:14,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 292 transitions, 3173 flow [2024-06-20 15:46:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-20 15:46:14,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-20 15:46:14,034 INFO L175 Difference]: Start difference. First operand has 356 places, 271 transitions, 2241 flow. Second operand 12 states and 143 transitions. [2024-06-20 15:46:14,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 292 transitions, 3173 flow [2024-06-20 15:46:14,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 292 transitions, 3057 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-20 15:46:14,478 INFO L231 Difference]: Finished difference. Result has 348 places, 267 transitions, 2168 flow [2024-06-20 15:46:14,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2168, PETRI_PLACES=348, PETRI_TRANSITIONS=267} [2024-06-20 15:46:14,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-20 15:46:14,478 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 267 transitions, 2168 flow [2024-06-20 15:46:14,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:14,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:14,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:14,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-20 15:46:14,479 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:14,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1103229456, now seen corresponding path program 9 times [2024-06-20 15:46:14,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:14,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457933663] [2024-06-20 15:46:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:14,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:15,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:15,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457933663] [2024-06-20 15:46:15,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457933663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:15,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:15,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:15,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921933831] [2024-06-20 15:46:15,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:15,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:15,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:15,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:15,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:15,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:15,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 267 transitions, 2168 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:15,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:15,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:15,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:16,494 INFO L124 PetriNetUnfolderBase]: 595/1211 cut-off events. [2024-06-20 15:46:16,495 INFO L125 PetriNetUnfolderBase]: For 216948/216948 co-relation queries the response was YES. [2024-06-20 15:46:16,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7821 conditions, 1211 events. 595/1211 cut-off events. For 216948/216948 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7353 event pairs, 90 based on Foata normal form. 6/1216 useless extension candidates. Maximal degree in co-relation 7669. Up to 921 conditions per place. [2024-06-20 15:46:16,507 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 233 selfloop transitions, 44 changer transitions 7/287 dead transitions. [2024-06-20 15:46:16,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 287 transitions, 3082 flow [2024-06-20 15:46:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 15:46:16,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-20 15:46:16,508 INFO L175 Difference]: Start difference. First operand has 348 places, 267 transitions, 2168 flow. Second operand 11 states and 141 transitions. [2024-06-20 15:46:16,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 287 transitions, 3082 flow [2024-06-20 15:46:17,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 287 transitions, 3008 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-20 15:46:17,117 INFO L231 Difference]: Finished difference. Result has 342 places, 264 transitions, 2175 flow [2024-06-20 15:46:17,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2175, PETRI_PLACES=342, PETRI_TRANSITIONS=264} [2024-06-20 15:46:17,118 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-20 15:46:17,118 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 264 transitions, 2175 flow [2024-06-20 15:46:17,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:17,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:17,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:17,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-20 15:46:17,118 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:17,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash -842065118, now seen corresponding path program 10 times [2024-06-20 15:46:17,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:17,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859184169] [2024-06-20 15:46:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:17,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:19,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:19,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859184169] [2024-06-20 15:46:19,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859184169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:19,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:19,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:19,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766998712] [2024-06-20 15:46:19,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:19,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:19,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:19,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:19,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:19,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 264 transitions, 2175 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:19,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:19,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:19,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:20,554 INFO L124 PetriNetUnfolderBase]: 570/1156 cut-off events. [2024-06-20 15:46:20,554 INFO L125 PetriNetUnfolderBase]: For 166295/166295 co-relation queries the response was YES. [2024-06-20 15:46:20,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 1156 events. 570/1156 cut-off events. For 166295/166295 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6951 event pairs, 82 based on Foata normal form. 8/1163 useless extension candidates. Maximal degree in co-relation 6489. Up to 982 conditions per place. [2024-06-20 15:46:20,565 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 243 selfloop transitions, 28 changer transitions 7/281 dead transitions. [2024-06-20 15:46:20,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 281 transitions, 2809 flow [2024-06-20 15:46:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-20 15:46:20,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-20 15:46:20,566 INFO L175 Difference]: Start difference. First operand has 342 places, 264 transitions, 2175 flow. Second operand 12 states and 139 transitions. [2024-06-20 15:46:20,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 281 transitions, 2809 flow [2024-06-20 15:46:21,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 281 transitions, 2720 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:46:21,017 INFO L231 Difference]: Finished difference. Result has 341 places, 261 transitions, 2125 flow [2024-06-20 15:46:21,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2125, PETRI_PLACES=341, PETRI_TRANSITIONS=261} [2024-06-20 15:46:21,017 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-20 15:46:21,017 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 261 transitions, 2125 flow [2024-06-20 15:46:21,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:21,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:21,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:21,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-20 15:46:21,017 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:21,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:21,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1102990446, now seen corresponding path program 11 times [2024-06-20 15:46:21,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:21,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908122115] [2024-06-20 15:46:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:21,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:22,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:22,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908122115] [2024-06-20 15:46:22,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908122115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:22,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:22,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:22,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399946168] [2024-06-20 15:46:22,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:22,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:22,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:22,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:22,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 261 transitions, 2125 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:22,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:22,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:22,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:23,332 INFO L124 PetriNetUnfolderBase]: 543/1103 cut-off events. [2024-06-20 15:46:23,332 INFO L125 PetriNetUnfolderBase]: For 115218/115218 co-relation queries the response was YES. [2024-06-20 15:46:23,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5447 conditions, 1103 events. 543/1103 cut-off events. For 115218/115218 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6622 event pairs, 70 based on Foata normal form. 8/1110 useless extension candidates. Maximal degree in co-relation 5299. Up to 880 conditions per place. [2024-06-20 15:46:23,346 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 223 selfloop transitions, 37 changer transitions 15/278 dead transitions. [2024-06-20 15:46:23,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 278 transitions, 2753 flow [2024-06-20 15:46:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-20 15:46:23,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:46:23,347 INFO L175 Difference]: Start difference. First operand has 341 places, 261 transitions, 2125 flow. Second operand 12 states and 144 transitions. [2024-06-20 15:46:23,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 278 transitions, 2753 flow [2024-06-20 15:46:23,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 278 transitions, 2691 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 15:46:23,621 INFO L231 Difference]: Finished difference. Result has 338 places, 254 transitions, 2095 flow [2024-06-20 15:46:23,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2095, PETRI_PLACES=338, PETRI_TRANSITIONS=254} [2024-06-20 15:46:23,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-20 15:46:23,622 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 254 transitions, 2095 flow [2024-06-20 15:46:23,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:23,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:23,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:23,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-20 15:46:23,622 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:23,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:23,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1712245292, now seen corresponding path program 12 times [2024-06-20 15:46:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:23,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761060321] [2024-06-20 15:46:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:23,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:25,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:25,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761060321] [2024-06-20 15:46:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761060321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:25,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:25,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:25,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591112292] [2024-06-20 15:46:25,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:25,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:25,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:25,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:25,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 254 transitions, 2095 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:25,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:25,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:25,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:26,195 INFO L124 PetriNetUnfolderBase]: 548/1120 cut-off events. [2024-06-20 15:46:26,195 INFO L125 PetriNetUnfolderBase]: For 149047/149047 co-relation queries the response was YES. [2024-06-20 15:46:26,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6430 conditions, 1120 events. 548/1120 cut-off events. For 149047/149047 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6690 event pairs, 78 based on Foata normal form. 6/1125 useless extension candidates. Maximal degree in co-relation 6283. Up to 799 conditions per place. [2024-06-20 15:46:26,206 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 224 selfloop transitions, 38 changer transitions 11/276 dead transitions. [2024-06-20 15:46:26,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 276 transitions, 2981 flow [2024-06-20 15:46:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-20 15:46:26,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 15:46:26,207 INFO L175 Difference]: Start difference. First operand has 338 places, 254 transitions, 2095 flow. Second operand 12 states and 148 transitions. [2024-06-20 15:46:26,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 276 transitions, 2981 flow [2024-06-20 15:46:26,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 276 transitions, 2885 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-20 15:46:26,607 INFO L231 Difference]: Finished difference. Result has 329 places, 249 transitions, 2060 flow [2024-06-20 15:46:26,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2060, PETRI_PLACES=329, PETRI_TRANSITIONS=249} [2024-06-20 15:46:26,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-20 15:46:26,608 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 249 transitions, 2060 flow [2024-06-20 15:46:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:26,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:26,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:26,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-20 15:46:26,608 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:26,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:26,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1942222202, now seen corresponding path program 13 times [2024-06-20 15:46:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:26,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596350194] [2024-06-20 15:46:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:26,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:28,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:28,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596350194] [2024-06-20 15:46:28,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596350194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:28,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:28,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:28,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188943545] [2024-06-20 15:46:28,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:28,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:28,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:28,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:28,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:28,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:28,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 249 transitions, 2060 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:28,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:28,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:28,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:28,924 INFO L124 PetriNetUnfolderBase]: 551/1125 cut-off events. [2024-06-20 15:46:28,924 INFO L125 PetriNetUnfolderBase]: For 173323/173323 co-relation queries the response was YES. [2024-06-20 15:46:28,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 1125 events. 551/1125 cut-off events. For 173323/173323 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6704 event pairs, 87 based on Foata normal form. 6/1130 useless extension candidates. Maximal degree in co-relation 6877. Up to 872 conditions per place. [2024-06-20 15:46:28,935 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 226 selfloop transitions, 33 changer transitions 8/270 dead transitions. [2024-06-20 15:46:28,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 270 transitions, 2924 flow [2024-06-20 15:46:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 15:46:28,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-20 15:46:28,936 INFO L175 Difference]: Start difference. First operand has 329 places, 249 transitions, 2060 flow. Second operand 12 states and 146 transitions. [2024-06-20 15:46:28,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 270 transitions, 2924 flow [2024-06-20 15:46:29,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 270 transitions, 2835 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-20 15:46:29,414 INFO L231 Difference]: Finished difference. Result has 323 places, 245 transitions, 2026 flow [2024-06-20 15:46:29,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2026, PETRI_PLACES=323, PETRI_TRANSITIONS=245} [2024-06-20 15:46:29,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-20 15:46:29,414 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 245 transitions, 2026 flow [2024-06-20 15:46:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:29,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:29,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:29,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-20 15:46:29,415 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:29,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1948717322, now seen corresponding path program 14 times [2024-06-20 15:46:29,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:29,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811574558] [2024-06-20 15:46:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:29,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:31,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811574558] [2024-06-20 15:46:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811574558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:31,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:31,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:31,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551181905] [2024-06-20 15:46:31,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:31,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:31,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:31,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:31,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:31,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 245 transitions, 2026 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:31,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:31,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:31,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:32,003 INFO L124 PetriNetUnfolderBase]: 533/1087 cut-off events. [2024-06-20 15:46:32,003 INFO L125 PetriNetUnfolderBase]: For 164851/164851 co-relation queries the response was YES. [2024-06-20 15:46:32,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5923 conditions, 1087 events. 533/1087 cut-off events. For 164851/164851 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6427 event pairs, 85 based on Foata normal form. 14/1100 useless extension candidates. Maximal degree in co-relation 5783. Up to 862 conditions per place. [2024-06-20 15:46:32,013 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 217 selfloop transitions, 29 changer transitions 13/262 dead transitions. [2024-06-20 15:46:32,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 262 transitions, 2620 flow [2024-06-20 15:46:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:32,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-20 15:46:32,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-20 15:46:32,014 INFO L175 Difference]: Start difference. First operand has 323 places, 245 transitions, 2026 flow. Second operand 12 states and 142 transitions. [2024-06-20 15:46:32,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 262 transitions, 2620 flow [2024-06-20 15:46:32,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 262 transitions, 2550 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-20 15:46:32,386 INFO L231 Difference]: Finished difference. Result has 319 places, 239 transitions, 1977 flow [2024-06-20 15:46:32,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1977, PETRI_PLACES=319, PETRI_TRANSITIONS=239} [2024-06-20 15:46:32,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 15:46:32,387 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 239 transitions, 1977 flow [2024-06-20 15:46:32,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:32,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:32,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:32,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-20 15:46:32,387 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:32,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1733025816, now seen corresponding path program 20 times [2024-06-20 15:46:32,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:32,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622024538] [2024-06-20 15:46:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:32,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:33,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622024538] [2024-06-20 15:46:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622024538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946009543] [2024-06-20 15:46:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:33,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:33,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:33,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 239 transitions, 1977 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:33,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:33,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:33,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:34,267 INFO L124 PetriNetUnfolderBase]: 517/1055 cut-off events. [2024-06-20 15:46:34,267 INFO L125 PetriNetUnfolderBase]: For 137076/137076 co-relation queries the response was YES. [2024-06-20 15:46:34,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5809 conditions, 1055 events. 517/1055 cut-off events. For 137076/137076 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6186 event pairs, 85 based on Foata normal form. 10/1064 useless extension candidates. Maximal degree in co-relation 5671. Up to 661 conditions per place. [2024-06-20 15:46:34,276 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 141 selfloop transitions, 104 changer transitions 6/254 dead transitions. [2024-06-20 15:46:34,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 254 transitions, 2573 flow [2024-06-20 15:46:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-20 15:46:34,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-20 15:46:34,277 INFO L175 Difference]: Start difference. First operand has 319 places, 239 transitions, 1977 flow. Second operand 11 states and 145 transitions. [2024-06-20 15:46:34,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 254 transitions, 2573 flow [2024-06-20 15:46:34,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 254 transitions, 2503 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 15:46:34,593 INFO L231 Difference]: Finished difference. Result has 311 places, 237 transitions, 2127 flow [2024-06-20 15:46:34,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2127, PETRI_PLACES=311, PETRI_TRANSITIONS=237} [2024-06-20 15:46:34,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-20 15:46:34,594 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 237 transitions, 2127 flow [2024-06-20 15:46:34,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:34,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:34,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:34,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-20 15:46:34,594 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:34,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:34,594 INFO L85 PathProgramCache]: Analyzing trace with hash 918112914, now seen corresponding path program 21 times [2024-06-20 15:46:34,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:34,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437254442] [2024-06-20 15:46:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:34,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:36,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:36,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437254442] [2024-06-20 15:46:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437254442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:36,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695048061] [2024-06-20 15:46:36,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:36,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:36,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:36,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 237 transitions, 2127 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:36,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:36,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:36,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:37,124 INFO L124 PetriNetUnfolderBase]: 504/1026 cut-off events. [2024-06-20 15:46:37,124 INFO L125 PetriNetUnfolderBase]: For 91137/91137 co-relation queries the response was YES. [2024-06-20 15:46:37,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5811 conditions, 1026 events. 504/1026 cut-off events. For 91137/91137 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5991 event pairs, 81 based on Foata normal form. 2/1027 useless extension candidates. Maximal degree in co-relation 5676. Up to 766 conditions per place. [2024-06-20 15:46:37,135 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 73 changer transitions 0/249 dead transitions. [2024-06-20 15:46:37,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 249 transitions, 2669 flow [2024-06-20 15:46:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:37,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:46:37,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 15:46:37,136 INFO L175 Difference]: Start difference. First operand has 311 places, 237 transitions, 2127 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:46:37,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 249 transitions, 2669 flow [2024-06-20 15:46:37,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 249 transitions, 2438 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-20 15:46:37,493 INFO L231 Difference]: Finished difference. Result has 312 places, 238 transitions, 2074 flow [2024-06-20 15:46:37,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2074, PETRI_PLACES=312, PETRI_TRANSITIONS=238} [2024-06-20 15:46:37,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-20 15:46:37,493 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 238 transitions, 2074 flow [2024-06-20 15:46:37,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:37,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:37,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:37,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-20 15:46:37,494 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:37,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1458915326, now seen corresponding path program 22 times [2024-06-20 15:46:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:37,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145121112] [2024-06-20 15:46:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:37,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:39,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:39,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145121112] [2024-06-20 15:46:39,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145121112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:39,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:39,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:39,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032701095] [2024-06-20 15:46:39,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:39,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:39,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:39,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:39,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:39,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 238 transitions, 2074 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:39,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:39,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:39,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:39,627 INFO L124 PetriNetUnfolderBase]: 508/1038 cut-off events. [2024-06-20 15:46:39,627 INFO L125 PetriNetUnfolderBase]: For 92877/92877 co-relation queries the response was YES. [2024-06-20 15:46:39,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5804 conditions, 1038 events. 508/1038 cut-off events. For 92877/92877 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6077 event pairs, 83 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 5668. Up to 884 conditions per place. [2024-06-20 15:46:39,638 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 37 changer transitions 0/250 dead transitions. [2024-06-20 15:46:39,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 250 transitions, 2620 flow [2024-06-20 15:46:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 15:46:39,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-20 15:46:39,639 INFO L175 Difference]: Start difference. First operand has 312 places, 238 transitions, 2074 flow. Second operand 11 states and 131 transitions. [2024-06-20 15:46:39,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 250 transitions, 2620 flow [2024-06-20 15:46:39,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 250 transitions, 2452 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 15:46:39,988 INFO L231 Difference]: Finished difference. Result has 314 places, 239 transitions, 2014 flow [2024-06-20 15:46:39,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2014, PETRI_PLACES=314, PETRI_TRANSITIONS=239} [2024-06-20 15:46:39,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-20 15:46:39,989 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 239 transitions, 2014 flow [2024-06-20 15:46:39,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:39,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:39,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:39,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-20 15:46:39,990 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:39,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash 486140238, now seen corresponding path program 23 times [2024-06-20 15:46:39,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:39,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873777427] [2024-06-20 15:46:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:39,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:41,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873777427] [2024-06-20 15:46:41,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873777427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:41,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:41,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:41,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994090641] [2024-06-20 15:46:41,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:41,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:41,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:41,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:41,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 239 transitions, 2014 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:41,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:41,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:41,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:41,818 INFO L124 PetriNetUnfolderBase]: 524/1070 cut-off events. [2024-06-20 15:46:41,818 INFO L125 PetriNetUnfolderBase]: For 134915/134915 co-relation queries the response was YES. [2024-06-20 15:46:41,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5913 conditions, 1070 events. 524/1070 cut-off events. For 134915/134915 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6322 event pairs, 85 based on Foata normal form. 10/1079 useless extension candidates. Maximal degree in co-relation 5776. Up to 820 conditions per place. [2024-06-20 15:46:41,828 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 182 selfloop transitions, 62 changer transitions 7/254 dead transitions. [2024-06-20 15:46:41,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 254 transitions, 2614 flow [2024-06-20 15:46:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:46:41,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-20 15:46:41,829 INFO L175 Difference]: Start difference. First operand has 314 places, 239 transitions, 2014 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:46:41,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 254 transitions, 2614 flow [2024-06-20 15:46:42,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 254 transitions, 2516 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 15:46:42,180 INFO L231 Difference]: Finished difference. Result has 316 places, 236 transitions, 2046 flow [2024-06-20 15:46:42,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2046, PETRI_PLACES=316, PETRI_TRANSITIONS=236} [2024-06-20 15:46:42,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-20 15:46:42,181 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 236 transitions, 2046 flow [2024-06-20 15:46:42,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:42,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:42,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:42,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-20 15:46:42,181 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:42,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:42,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1895811544, now seen corresponding path program 24 times [2024-06-20 15:46:42,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:42,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622759783] [2024-06-20 15:46:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:42,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:43,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:43,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622759783] [2024-06-20 15:46:43,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622759783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:43,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:43,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126137809] [2024-06-20 15:46:43,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:43,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:43,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:43,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:43,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 236 transitions, 2046 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:43,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:43,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:43,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:43,934 INFO L124 PetriNetUnfolderBase]: 509/1039 cut-off events. [2024-06-20 15:46:43,934 INFO L125 PetriNetUnfolderBase]: For 96725/96725 co-relation queries the response was YES. [2024-06-20 15:46:43,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 1039 events. 509/1039 cut-off events. For 96725/96725 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6104 event pairs, 83 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 5704. Up to 828 conditions per place. [2024-06-20 15:46:43,944 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 64 changer transitions 0/248 dead transitions. [2024-06-20 15:46:43,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 248 transitions, 2592 flow [2024-06-20 15:46:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:46:43,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 15:46:43,946 INFO L175 Difference]: Start difference. First operand has 316 places, 236 transitions, 2046 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:46:43,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 248 transitions, 2592 flow [2024-06-20 15:46:44,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 248 transitions, 2439 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-20 15:46:44,296 INFO L231 Difference]: Finished difference. Result has 317 places, 237 transitions, 2059 flow [2024-06-20 15:46:44,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2059, PETRI_PLACES=317, PETRI_TRANSITIONS=237} [2024-06-20 15:46:44,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-20 15:46:44,297 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 237 transitions, 2059 flow [2024-06-20 15:46:44,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:44,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:44,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:44,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-20 15:46:44,297 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:44,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1739459556, now seen corresponding path program 25 times [2024-06-20 15:46:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:44,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795622947] [2024-06-20 15:46:44,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:44,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:45,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:45,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795622947] [2024-06-20 15:46:45,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795622947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:45,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:45,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:45,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321802003] [2024-06-20 15:46:45,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:45,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:45,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:46,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:46,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 237 transitions, 2059 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:46,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:46,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:46,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:46,528 INFO L124 PetriNetUnfolderBase]: 542/1106 cut-off events. [2024-06-20 15:46:46,528 INFO L125 PetriNetUnfolderBase]: For 151751/151751 co-relation queries the response was YES. [2024-06-20 15:46:46,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 1106 events. 542/1106 cut-off events. For 151751/151751 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6535 event pairs, 96 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 7126. Up to 663 conditions per place. [2024-06-20 15:46:46,539 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 115 changer transitions 0/255 dead transitions. [2024-06-20 15:46:46,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 255 transitions, 2911 flow [2024-06-20 15:46:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-20 15:46:46,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-20 15:46:46,539 INFO L175 Difference]: Start difference. First operand has 317 places, 237 transitions, 2059 flow. Second operand 11 states and 146 transitions. [2024-06-20 15:46:46,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 255 transitions, 2911 flow [2024-06-20 15:46:47,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 255 transitions, 2755 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-20 15:46:47,078 INFO L231 Difference]: Finished difference. Result has 319 places, 239 transitions, 2207 flow [2024-06-20 15:46:47,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2207, PETRI_PLACES=319, PETRI_TRANSITIONS=239} [2024-06-20 15:46:47,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 15:46:47,079 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 239 transitions, 2207 flow [2024-06-20 15:46:47,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:47,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:47,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:47,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-20 15:46:47,079 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:47,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1511380776, now seen corresponding path program 26 times [2024-06-20 15:46:47,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208547371] [2024-06-20 15:46:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:48,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:48,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208547371] [2024-06-20 15:46:48,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208547371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:48,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:48,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:48,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840262583] [2024-06-20 15:46:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:48,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:48,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:48,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:48,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 239 transitions, 2207 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:48,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:48,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:48,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:48,943 INFO L124 PetriNetUnfolderBase]: 558/1142 cut-off events. [2024-06-20 15:46:48,943 INFO L125 PetriNetUnfolderBase]: For 197444/197444 co-relation queries the response was YES. [2024-06-20 15:46:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7572 conditions, 1142 events. 558/1142 cut-off events. For 197444/197444 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6804 event pairs, 102 based on Foata normal form. 10/1151 useless extension candidates. Maximal degree in co-relation 7432. Up to 760 conditions per place. [2024-06-20 15:46:48,955 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 97 changer transitions 7/254 dead transitions. [2024-06-20 15:46:48,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 254 transitions, 2813 flow [2024-06-20 15:46:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-20 15:46:48,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-20 15:46:48,956 INFO L175 Difference]: Start difference. First operand has 319 places, 239 transitions, 2207 flow. Second operand 11 states and 147 transitions. [2024-06-20 15:46:48,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 254 transitions, 2813 flow [2024-06-20 15:46:49,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 254 transitions, 2619 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-20 15:46:49,588 INFO L231 Difference]: Finished difference. Result has 323 places, 236 transitions, 2221 flow [2024-06-20 15:46:49,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2221, PETRI_PLACES=323, PETRI_TRANSITIONS=236} [2024-06-20 15:46:49,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-20 15:46:49,589 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 236 transitions, 2221 flow [2024-06-20 15:46:49,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:49,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:49,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:49,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-20 15:46:49,589 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:49,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:49,590 INFO L85 PathProgramCache]: Analyzing trace with hash 7777070, now seen corresponding path program 27 times [2024-06-20 15:46:49,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:49,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488944816] [2024-06-20 15:46:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:49,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:51,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488944816] [2024-06-20 15:46:51,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488944816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:51,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:51,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243996850] [2024-06-20 15:46:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:51,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:51,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:51,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:51,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 236 transitions, 2221 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:51,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:51,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:51,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:51,626 INFO L124 PetriNetUnfolderBase]: 551/1131 cut-off events. [2024-06-20 15:46:51,627 INFO L125 PetriNetUnfolderBase]: For 188470/188470 co-relation queries the response was YES. [2024-06-20 15:46:51,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 1131 events. 551/1131 cut-off events. For 188470/188470 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6733 event pairs, 99 based on Foata normal form. 8/1138 useless extension candidates. Maximal degree in co-relation 7461. Up to 947 conditions per place. [2024-06-20 15:46:51,638 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 210 selfloop transitions, 27 changer transitions 11/251 dead transitions. [2024-06-20 15:46:51,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 251 transitions, 2793 flow [2024-06-20 15:46:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 15:46:51,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 15:46:51,639 INFO L175 Difference]: Start difference. First operand has 323 places, 236 transitions, 2221 flow. Second operand 11 states and 129 transitions. [2024-06-20 15:46:51,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 251 transitions, 2793 flow [2024-06-20 15:46:52,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 251 transitions, 2572 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-20 15:46:52,326 INFO L231 Difference]: Finished difference. Result has 324 places, 233 transitions, 2034 flow [2024-06-20 15:46:52,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2034, PETRI_PLACES=324, PETRI_TRANSITIONS=233} [2024-06-20 15:46:52,327 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-20 15:46:52,327 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 233 transitions, 2034 flow [2024-06-20 15:46:52,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:52,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:52,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:52,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-20 15:46:52,327 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:52,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash 7661750, now seen corresponding path program 28 times [2024-06-20 15:46:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:52,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979156395] [2024-06-20 15:46:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:52,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:53,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979156395] [2024-06-20 15:46:53,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979156395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:53,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:53,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244246543] [2024-06-20 15:46:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:53,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:53,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:53,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:53,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 233 transitions, 2034 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:53,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:53,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:53,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:54,095 INFO L124 PetriNetUnfolderBase]: 536/1098 cut-off events. [2024-06-20 15:46:54,095 INFO L125 PetriNetUnfolderBase]: For 159823/159823 co-relation queries the response was YES. [2024-06-20 15:46:54,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7327 conditions, 1098 events. 536/1098 cut-off events. For 159823/159823 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6498 event pairs, 96 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 7184. Up to 954 conditions per place. [2024-06-20 15:46:54,108 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 215 selfloop transitions, 29 changer transitions 0/247 dead transitions. [2024-06-20 15:46:54,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 247 transitions, 2586 flow [2024-06-20 15:46:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 15:46:54,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 15:46:54,109 INFO L175 Difference]: Start difference. First operand has 324 places, 233 transitions, 2034 flow. Second operand 11 states and 126 transitions. [2024-06-20 15:46:54,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 247 transitions, 2586 flow [2024-06-20 15:46:54,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 247 transitions, 2468 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:54,635 INFO L231 Difference]: Finished difference. Result has 319 places, 234 transitions, 2016 flow [2024-06-20 15:46:54,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2016, PETRI_PLACES=319, PETRI_TRANSITIONS=234} [2024-06-20 15:46:54,635 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 15:46:54,635 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 234 transitions, 2016 flow [2024-06-20 15:46:54,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:54,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:54,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:54,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-20 15:46:54,635 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:54,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash -483832488, now seen corresponding path program 29 times [2024-06-20 15:46:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:54,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991496206] [2024-06-20 15:46:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:54,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:56,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:56,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991496206] [2024-06-20 15:46:56,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991496206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:56,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:56,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:56,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975916569] [2024-06-20 15:46:56,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:56,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:56,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:56,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:56,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:56,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:56,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 234 transitions, 2016 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:56,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:56,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:56,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:56,656 INFO L124 PetriNetUnfolderBase]: 523/1075 cut-off events. [2024-06-20 15:46:56,656 INFO L125 PetriNetUnfolderBase]: For 145670/145670 co-relation queries the response was YES. [2024-06-20 15:46:56,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6088 conditions, 1075 events. 523/1075 cut-off events. For 145670/145670 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6366 event pairs, 105 based on Foata normal form. 10/1084 useless extension candidates. Maximal degree in co-relation 5947. Up to 919 conditions per place. [2024-06-20 15:46:56,666 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 26 changer transitions 12/248 dead transitions. [2024-06-20 15:46:56,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 248 transitions, 2574 flow [2024-06-20 15:46:56,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 15:46:56,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:46:56,667 INFO L175 Difference]: Start difference. First operand has 319 places, 234 transitions, 2016 flow. Second operand 11 states and 132 transitions. [2024-06-20 15:46:56,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 248 transitions, 2574 flow [2024-06-20 15:46:57,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 248 transitions, 2470 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-20 15:46:57,063 INFO L231 Difference]: Finished difference. Result has 321 places, 225 transitions, 1881 flow [2024-06-20 15:46:57,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1881, PETRI_PLACES=321, PETRI_TRANSITIONS=225} [2024-06-20 15:46:57,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-20 15:46:57,064 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 225 transitions, 1881 flow [2024-06-20 15:46:57,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:57,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:57,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:57,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-20 15:46:57,064 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:57,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:57,065 INFO L85 PathProgramCache]: Analyzing trace with hash 178479500, now seen corresponding path program 30 times [2024-06-20 15:46:57,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:57,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212110290] [2024-06-20 15:46:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:57,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:58,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:58,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212110290] [2024-06-20 15:46:58,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212110290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:58,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:58,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:58,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539343585] [2024-06-20 15:46:58,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:58,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:58,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:58,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:58,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:58,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:46:58,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 225 transitions, 1881 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:58,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:58,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:46:58,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:59,078 INFO L124 PetriNetUnfolderBase]: 529/1087 cut-off events. [2024-06-20 15:46:59,078 INFO L125 PetriNetUnfolderBase]: For 160392/160392 co-relation queries the response was YES. [2024-06-20 15:46:59,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7235 conditions, 1087 events. 529/1087 cut-off events. For 160392/160392 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6415 event pairs, 98 based on Foata normal form. 2/1088 useless extension candidates. Maximal degree in co-relation 7107. Up to 865 conditions per place. [2024-06-20 15:46:59,092 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 44 changer transitions 0/243 dead transitions. [2024-06-20 15:46:59,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 243 transitions, 2723 flow [2024-06-20 15:46:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:46:59,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 15:46:59,093 INFO L175 Difference]: Start difference. First operand has 321 places, 225 transitions, 1881 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:46:59,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 243 transitions, 2723 flow [2024-06-20 15:46:59,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 243 transitions, 2620 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-20 15:46:59,649 INFO L231 Difference]: Finished difference. Result has 316 places, 227 transitions, 1950 flow [2024-06-20 15:46:59,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1950, PETRI_PLACES=316, PETRI_TRANSITIONS=227} [2024-06-20 15:46:59,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-20 15:46:59,649 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 227 transitions, 1950 flow [2024-06-20 15:46:59,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:59,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:59,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:59,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-20 15:46:59,650 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:59,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash 184913240, now seen corresponding path program 31 times [2024-06-20 15:46:59,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:59,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261113144] [2024-06-20 15:46:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:59,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:00,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:00,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261113144] [2024-06-20 15:47:00,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261113144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:00,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:00,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:47:00,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148729212] [2024-06-20 15:47:00,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:00,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:47:00,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:00,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:47:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:47:01,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:01,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 227 transitions, 1950 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:01,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:01,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:01,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:01,500 INFO L124 PetriNetUnfolderBase]: 516/1064 cut-off events. [2024-06-20 15:47:01,501 INFO L125 PetriNetUnfolderBase]: For 149029/149029 co-relation queries the response was YES. [2024-06-20 15:47:01,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6022 conditions, 1064 events. 516/1064 cut-off events. For 149029/149029 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6313 event pairs, 91 based on Foata normal form. 10/1073 useless extension candidates. Maximal degree in co-relation 5896. Up to 883 conditions per place. [2024-06-20 15:47:01,513 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 194 selfloop transitions, 38 changer transitions 6/241 dead transitions. [2024-06-20 15:47:01,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 241 transitions, 2494 flow [2024-06-20 15:47:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:47:01,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:47:01,514 INFO L175 Difference]: Start difference. First operand has 316 places, 227 transitions, 1950 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:47:01,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 241 transitions, 2494 flow [2024-06-20 15:47:01,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 241 transitions, 2377 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-20 15:47:01,850 INFO L231 Difference]: Finished difference. Result has 320 places, 224 transitions, 1891 flow [2024-06-20 15:47:01,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1891, PETRI_PLACES=320, PETRI_TRANSITIONS=224} [2024-06-20 15:47:01,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-20 15:47:01,850 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 224 transitions, 1891 flow [2024-06-20 15:47:01,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:01,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:01,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:01,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-20 15:47:01,850 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:01,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash 264495198, now seen corresponding path program 32 times [2024-06-20 15:47:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:01,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948174144] [2024-06-20 15:47:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:03,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:03,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948174144] [2024-06-20 15:47:03,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948174144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:03,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:03,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:47:03,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660439256] [2024-06-20 15:47:03,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:03,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:47:03,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:03,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:47:03,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:47:03,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:03,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 224 transitions, 1891 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:03,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:03,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:03,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:03,617 INFO L124 PetriNetUnfolderBase]: 515/1063 cut-off events. [2024-06-20 15:47:03,618 INFO L125 PetriNetUnfolderBase]: For 151192/151192 co-relation queries the response was YES. [2024-06-20 15:47:03,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6023 conditions, 1063 events. 515/1063 cut-off events. For 151192/151192 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6287 event pairs, 93 based on Foata normal form. 10/1072 useless extension candidates. Maximal degree in co-relation 5895. Up to 836 conditions per place. [2024-06-20 15:47:03,627 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 54 changer transitions 6/239 dead transitions. [2024-06-20 15:47:03,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 239 transitions, 2471 flow [2024-06-20 15:47:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 15:47:03,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-20 15:47:03,628 INFO L175 Difference]: Start difference. First operand has 320 places, 224 transitions, 1891 flow. Second operand 11 states and 142 transitions. [2024-06-20 15:47:03,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 239 transitions, 2471 flow [2024-06-20 15:47:04,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 239 transitions, 2340 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:04,071 INFO L231 Difference]: Finished difference. Result has 319 places, 222 transitions, 1898 flow [2024-06-20 15:47:04,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1898, PETRI_PLACES=319, PETRI_TRANSITIONS=222} [2024-06-20 15:47:04,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 15:47:04,071 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 222 transitions, 1898 flow [2024-06-20 15:47:04,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:04,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:04,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:04,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-20 15:47:04,072 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:04,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:04,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1980625614, now seen corresponding path program 33 times [2024-06-20 15:47:04,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:04,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724471819] [2024-06-20 15:47:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:04,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:05,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:05,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724471819] [2024-06-20 15:47:05,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724471819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:05,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:05,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:47:05,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666458186] [2024-06-20 15:47:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:05,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:47:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:47:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:47:05,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:05,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 222 transitions, 1898 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:05,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:05,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:05,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:06,423 INFO L124 PetriNetUnfolderBase]: 495/1021 cut-off events. [2024-06-20 15:47:06,423 INFO L125 PetriNetUnfolderBase]: For 96049/96049 co-relation queries the response was YES. [2024-06-20 15:47:06,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5548 conditions, 1021 events. 495/1021 cut-off events. For 96049/96049 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5999 event pairs, 86 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 5420. Up to 835 conditions per place. [2024-06-20 15:47:06,434 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 50 changer transitions 0/234 dead transitions. [2024-06-20 15:47:06,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 234 transitions, 2386 flow [2024-06-20 15:47:06,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:47:06,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:47:06,435 INFO L175 Difference]: Start difference. First operand has 319 places, 222 transitions, 1898 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:47:06,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 234 transitions, 2386 flow [2024-06-20 15:47:06,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 234 transitions, 2242 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-20 15:47:06,818 INFO L231 Difference]: Finished difference. Result has 319 places, 222 transitions, 1858 flow [2024-06-20 15:47:06,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1858, PETRI_PLACES=319, PETRI_TRANSITIONS=222} [2024-06-20 15:47:06,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 15:47:06,819 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 222 transitions, 1858 flow [2024-06-20 15:47:06,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:06,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:06,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:06,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-20 15:47:06,819 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:06,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:06,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2123719638, now seen corresponding path program 15 times [2024-06-20 15:47:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:06,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684810393] [2024-06-20 15:47:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:06,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:08,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:08,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684810393] [2024-06-20 15:47:08,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684810393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:08,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:08,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:08,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311929392] [2024-06-20 15:47:08,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:08,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:08,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:08,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:08,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:09,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:09,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 222 transitions, 1858 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:09,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:09,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:09,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:09,514 INFO L124 PetriNetUnfolderBase]: 507/1049 cut-off events. [2024-06-20 15:47:09,514 INFO L125 PetriNetUnfolderBase]: For 129479/129479 co-relation queries the response was YES. [2024-06-20 15:47:09,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5610 conditions, 1049 events. 507/1049 cut-off events. For 129479/129479 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6202 event pairs, 92 based on Foata normal form. 8/1056 useless extension candidates. Maximal degree in co-relation 5482. Up to 860 conditions per place. [2024-06-20 15:47:09,525 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 179 selfloop transitions, 46 changer transitions 9/237 dead transitions. [2024-06-20 15:47:09,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 237 transitions, 2394 flow [2024-06-20 15:47:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:09,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 15:47:09,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 15:47:09,526 INFO L175 Difference]: Start difference. First operand has 319 places, 222 transitions, 1858 flow. Second operand 12 states and 145 transitions. [2024-06-20 15:47:09,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 237 transitions, 2394 flow [2024-06-20 15:47:09,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 237 transitions, 2065 flow, removed 19 selfloop flow, removed 15 redundant places. [2024-06-20 15:47:09,865 INFO L231 Difference]: Finished difference. Result has 316 places, 219 transitions, 1607 flow [2024-06-20 15:47:09,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1607, PETRI_PLACES=316, PETRI_TRANSITIONS=219} [2024-06-20 15:47:09,865 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-20 15:47:09,865 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 219 transitions, 1607 flow [2024-06-20 15:47:09,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:09,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:09,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:09,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-20 15:47:09,867 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:09,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash 178664074, now seen corresponding path program 16 times [2024-06-20 15:47:09,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:09,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661908438] [2024-06-20 15:47:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:09,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:12,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:12,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661908438] [2024-06-20 15:47:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661908438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:12,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:12,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:12,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272248639] [2024-06-20 15:47:12,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:12,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:12,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:12,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:12,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:12,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:12,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 219 transitions, 1607 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:12,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:12,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:12,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:13,174 INFO L124 PetriNetUnfolderBase]: 502/1042 cut-off events. [2024-06-20 15:47:13,174 INFO L125 PetriNetUnfolderBase]: For 132536/132536 co-relation queries the response was YES. [2024-06-20 15:47:13,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5146 conditions, 1042 events. 502/1042 cut-off events. For 132536/132536 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6179 event pairs, 92 based on Foata normal form. 8/1049 useless extension candidates. Maximal degree in co-relation 5022. Up to 874 conditions per place. [2024-06-20 15:47:13,184 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 190 selfloop transitions, 34 changer transitions 7/234 dead transitions. [2024-06-20 15:47:13,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 234 transitions, 2137 flow [2024-06-20 15:47:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-20 15:47:13,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-20 15:47:13,185 INFO L175 Difference]: Start difference. First operand has 316 places, 219 transitions, 1607 flow. Second operand 12 states and 143 transitions. [2024-06-20 15:47:13,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 234 transitions, 2137 flow [2024-06-20 15:47:13,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 234 transitions, 1995 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:13,511 INFO L231 Difference]: Finished difference. Result has 313 places, 216 transitions, 1524 flow [2024-06-20 15:47:13,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1524, PETRI_PLACES=313, PETRI_TRANSITIONS=216} [2024-06-20 15:47:13,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-20 15:47:13,512 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 216 transitions, 1524 flow [2024-06-20 15:47:13,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:13,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:13,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:13,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-20 15:47:13,512 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:13,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:13,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1739274982, now seen corresponding path program 17 times [2024-06-20 15:47:13,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:13,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369763368] [2024-06-20 15:47:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:13,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:15,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:15,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369763368] [2024-06-20 15:47:15,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369763368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:15,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:15,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:15,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666019132] [2024-06-20 15:47:15,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:15,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:15,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:15,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:15,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:15,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 216 transitions, 1524 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:15,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:15,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:15,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:16,188 INFO L124 PetriNetUnfolderBase]: 497/1035 cut-off events. [2024-06-20 15:47:16,188 INFO L125 PetriNetUnfolderBase]: For 128595/128595 co-relation queries the response was YES. [2024-06-20 15:47:16,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4991 conditions, 1035 events. 497/1035 cut-off events. For 128595/128595 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6134 event pairs, 92 based on Foata normal form. 8/1042 useless extension candidates. Maximal degree in co-relation 4869. Up to 763 conditions per place. [2024-06-20 15:47:16,197 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 67 changer transitions 9/231 dead transitions. [2024-06-20 15:47:16,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 231 transitions, 2046 flow [2024-06-20 15:47:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-20 15:47:16,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 15:47:16,198 INFO L175 Difference]: Start difference. First operand has 313 places, 216 transitions, 1524 flow. Second operand 12 states and 148 transitions. [2024-06-20 15:47:16,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 231 transitions, 2046 flow [2024-06-20 15:47:16,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 231 transitions, 1972 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:16,503 INFO L231 Difference]: Finished difference. Result has 311 places, 213 transitions, 1570 flow [2024-06-20 15:47:16,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1570, PETRI_PLACES=311, PETRI_TRANSITIONS=213} [2024-06-20 15:47:16,503 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-20 15:47:16,503 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 213 transitions, 1570 flow [2024-06-20 15:47:16,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:16,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:16,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:16,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-20 15:47:16,503 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:16,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash 573301006, now seen corresponding path program 18 times [2024-06-20 15:47:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:16,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240440057] [2024-06-20 15:47:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:16,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:18,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240440057] [2024-06-20 15:47:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240440057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:18,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832463967] [2024-06-20 15:47:18,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:18,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:18,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:18,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:19,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:19,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 213 transitions, 1570 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:19,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:19,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:19,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:19,629 INFO L124 PetriNetUnfolderBase]: 492/1032 cut-off events. [2024-06-20 15:47:19,629 INFO L125 PetriNetUnfolderBase]: For 128096/128096 co-relation queries the response was YES. [2024-06-20 15:47:19,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5014 conditions, 1032 events. 492/1032 cut-off events. For 128096/128096 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6153 event pairs, 94 based on Foata normal form. 8/1039 useless extension candidates. Maximal degree in co-relation 4893. Up to 756 conditions per place. [2024-06-20 15:47:19,639 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 64 changer transitions 9/228 dead transitions. [2024-06-20 15:47:19,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 228 transitions, 2086 flow [2024-06-20 15:47:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 15:47:19,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-20 15:47:19,640 INFO L175 Difference]: Start difference. First operand has 311 places, 213 transitions, 1570 flow. Second operand 12 states and 149 transitions. [2024-06-20 15:47:19,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 228 transitions, 2086 flow [2024-06-20 15:47:19,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 228 transitions, 1948 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:19,902 INFO L231 Difference]: Finished difference. Result has 309 places, 210 transitions, 1547 flow [2024-06-20 15:47:19,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1547, PETRI_PLACES=309, PETRI_TRANSITIONS=210} [2024-06-20 15:47:19,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-20 15:47:19,902 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 210 transitions, 1547 flow [2024-06-20 15:47:19,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:19,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:19,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-20 15:47:19,903 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:19,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:19,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2132002218, now seen corresponding path program 19 times [2024-06-20 15:47:19,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:19,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639831959] [2024-06-20 15:47:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:19,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:21,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:21,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639831959] [2024-06-20 15:47:21,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639831959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:21,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:21,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:47:21,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321793178] [2024-06-20 15:47:21,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:21,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:47:21,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:21,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:47:21,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:47:21,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:21,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 210 transitions, 1547 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:21,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:21,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:21,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:21,703 INFO L124 PetriNetUnfolderBase]: 498/1054 cut-off events. [2024-06-20 15:47:21,703 INFO L125 PetriNetUnfolderBase]: For 146115/146115 co-relation queries the response was YES. [2024-06-20 15:47:21,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5673 conditions, 1054 events. 498/1054 cut-off events. For 146115/146115 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6259 event pairs, 103 based on Foata normal form. 6/1059 useless extension candidates. Maximal degree in co-relation 5553. Up to 785 conditions per place. [2024-06-20 15:47:21,714 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 168 selfloop transitions, 46 changer transitions 10/227 dead transitions. [2024-06-20 15:47:21,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 227 transitions, 2279 flow [2024-06-20 15:47:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 15:47:21,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-20 15:47:21,715 INFO L175 Difference]: Start difference. First operand has 309 places, 210 transitions, 1547 flow. Second operand 11 states and 141 transitions. [2024-06-20 15:47:21,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 227 transitions, 2279 flow [2024-06-20 15:47:22,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 227 transitions, 2143 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:22,171 INFO L231 Difference]: Finished difference. Result has 306 places, 204 transitions, 1468 flow [2024-06-20 15:47:22,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1468, PETRI_PLACES=306, PETRI_TRANSITIONS=204} [2024-06-20 15:47:22,171 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-20 15:47:22,172 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 204 transitions, 1468 flow [2024-06-20 15:47:22,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:22,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:22,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:22,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-20 15:47:22,172 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:22,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1732779862, now seen corresponding path program 20 times [2024-06-20 15:47:22,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:22,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049371068] [2024-06-20 15:47:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:23,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049371068] [2024-06-20 15:47:23,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049371068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:23,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:23,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:47:23,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162348181] [2024-06-20 15:47:23,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:23,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:47:23,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:47:23,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:47:23,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:23,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 204 transitions, 1468 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:23,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:23,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:23,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:24,237 INFO L124 PetriNetUnfolderBase]: 499/1061 cut-off events. [2024-06-20 15:47:24,238 INFO L125 PetriNetUnfolderBase]: For 176314/176314 co-relation queries the response was YES. [2024-06-20 15:47:24,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6256 conditions, 1061 events. 499/1061 cut-off events. For 176314/176314 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6296 event pairs, 116 based on Foata normal form. 6/1066 useless extension candidates. Maximal degree in co-relation 6137. Up to 679 conditions per place. [2024-06-20 15:47:24,247 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 137 selfloop transitions, 74 changer transitions 7/221 dead transitions. [2024-06-20 15:47:24,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 221 transitions, 2186 flow [2024-06-20 15:47:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-20 15:47:24,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-20 15:47:24,248 INFO L175 Difference]: Start difference. First operand has 306 places, 204 transitions, 1468 flow. Second operand 11 states and 146 transitions. [2024-06-20 15:47:24,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 221 transitions, 2186 flow [2024-06-20 15:47:24,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 221 transitions, 2079 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:24,766 INFO L231 Difference]: Finished difference. Result has 301 places, 201 transitions, 1497 flow [2024-06-20 15:47:24,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1497, PETRI_PLACES=301, PETRI_TRANSITIONS=201} [2024-06-20 15:47:24,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-20 15:47:24,766 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 201 transitions, 1497 flow [2024-06-20 15:47:24,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:24,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:24,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:24,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-20 15:47:24,766 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:24,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:24,767 INFO L85 PathProgramCache]: Analyzing trace with hash 803228626, now seen corresponding path program 21 times [2024-06-20 15:47:24,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:24,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064247512] [2024-06-20 15:47:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:24,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:26,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064247512] [2024-06-20 15:47:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064247512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:26,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:26,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635213233] [2024-06-20 15:47:26,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:26,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:26,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:26,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 201 transitions, 1497 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:26,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:26,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:26,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:27,215 INFO L124 PetriNetUnfolderBase]: 496/1052 cut-off events. [2024-06-20 15:47:27,216 INFO L125 PetriNetUnfolderBase]: For 173042/173042 co-relation queries the response was YES. [2024-06-20 15:47:27,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6255 conditions, 1052 events. 496/1052 cut-off events. For 173042/173042 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6215 event pairs, 115 based on Foata normal form. 6/1057 useless extension candidates. Maximal degree in co-relation 6137. Up to 709 conditions per place. [2024-06-20 15:47:27,225 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 72 changer transitions 10/217 dead transitions. [2024-06-20 15:47:27,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 217 transitions, 1984 flow [2024-06-20 15:47:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-20 15:47:27,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-20 15:47:27,225 INFO L175 Difference]: Start difference. First operand has 301 places, 201 transitions, 1497 flow. Second operand 12 states and 152 transitions. [2024-06-20 15:47:27,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 217 transitions, 1984 flow [2024-06-20 15:47:27,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 217 transitions, 1813 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-20 15:47:27,705 INFO L231 Difference]: Finished difference. Result has 298 places, 199 transitions, 1460 flow [2024-06-20 15:47:27,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1460, PETRI_PLACES=298, PETRI_TRANSITIONS=199} [2024-06-20 15:47:27,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-20 15:47:27,705 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 199 transitions, 1460 flow [2024-06-20 15:47:27,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:27,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:27,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:27,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-20 15:47:27,706 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:27,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:27,706 INFO L85 PathProgramCache]: Analyzing trace with hash 184920184, now seen corresponding path program 22 times [2024-06-20 15:47:27,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:27,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720919596] [2024-06-20 15:47:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:27,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:30,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:30,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720919596] [2024-06-20 15:47:30,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720919596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:30,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:30,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:30,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149928082] [2024-06-20 15:47:30,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:30,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:30,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:30,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:30,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:30,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:30,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 199 transitions, 1460 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:30,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:30,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:30,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:30,680 INFO L124 PetriNetUnfolderBase]: 493/1047 cut-off events. [2024-06-20 15:47:30,680 INFO L125 PetriNetUnfolderBase]: For 180669/180669 co-relation queries the response was YES. [2024-06-20 15:47:30,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6214 conditions, 1047 events. 493/1047 cut-off events. For 180669/180669 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6193 event pairs, 120 based on Foata normal form. 8/1054 useless extension candidates. Maximal degree in co-relation 6096. Up to 875 conditions per place. [2024-06-20 15:47:30,689 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 171 selfloop transitions, 33 changer transitions 7/214 dead transitions. [2024-06-20 15:47:30,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 214 transitions, 1948 flow [2024-06-20 15:47:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-20 15:47:30,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-20 15:47:30,690 INFO L175 Difference]: Start difference. First operand has 298 places, 199 transitions, 1460 flow. Second operand 12 states and 143 transitions. [2024-06-20 15:47:30,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 214 transitions, 1948 flow [2024-06-20 15:47:31,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 214 transitions, 1796 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:31,169 INFO L231 Difference]: Finished difference. Result has 295 places, 196 transitions, 1363 flow [2024-06-20 15:47:31,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1363, PETRI_PLACES=295, PETRI_TRANSITIONS=196} [2024-06-20 15:47:31,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-20 15:47:31,170 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 196 transitions, 1363 flow [2024-06-20 15:47:31,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:31,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:31,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:31,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-20 15:47:31,170 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:31,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1743969010, now seen corresponding path program 23 times [2024-06-20 15:47:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:31,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051541555] [2024-06-20 15:47:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:31,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051541555] [2024-06-20 15:47:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051541555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:32,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:32,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:32,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075514044] [2024-06-20 15:47:32,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:32,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:32,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:32,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:32,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:33,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:33,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 196 transitions, 1363 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:33,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:33,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:33,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:33,654 INFO L124 PetriNetUnfolderBase]: 506/1086 cut-off events. [2024-06-20 15:47:33,654 INFO L125 PetriNetUnfolderBase]: For 211116/211116 co-relation queries the response was YES. [2024-06-20 15:47:33,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7104 conditions, 1086 events. 506/1086 cut-off events. For 211116/211116 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6523 event pairs, 128 based on Foata normal form. 6/1091 useless extension candidates. Maximal degree in co-relation 6987. Up to 793 conditions per place. [2024-06-20 15:47:33,664 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 46 changer transitions 10/216 dead transitions. [2024-06-20 15:47:33,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 216 transitions, 2097 flow [2024-06-20 15:47:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 15:47:33,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-20 15:47:33,665 INFO L175 Difference]: Start difference. First operand has 295 places, 196 transitions, 1363 flow. Second operand 12 states and 149 transitions. [2024-06-20 15:47:33,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 216 transitions, 2097 flow [2024-06-20 15:47:34,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 216 transitions, 2021 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:34,239 INFO L231 Difference]: Finished difference. Result has 293 places, 192 transitions, 1368 flow [2024-06-20 15:47:34,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1368, PETRI_PLACES=293, PETRI_TRANSITIONS=192} [2024-06-20 15:47:34,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-20 15:47:34,239 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 192 transitions, 1368 flow [2024-06-20 15:47:34,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:34,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:34,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:34,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-20 15:47:34,239 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:34,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash 803516926, now seen corresponding path program 24 times [2024-06-20 15:47:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:34,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336105179] [2024-06-20 15:47:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:34,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336105179] [2024-06-20 15:47:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336105179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209531495] [2024-06-20 15:47:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:35,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:35,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:36,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:36,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 192 transitions, 1368 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:36,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:36,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:36,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:36,588 INFO L124 PetriNetUnfolderBase]: 517/1111 cut-off events. [2024-06-20 15:47:36,588 INFO L125 PetriNetUnfolderBase]: For 247884/247884 co-relation queries the response was YES. [2024-06-20 15:47:36,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8049 conditions, 1111 events. 517/1111 cut-off events. For 247884/247884 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6697 event pairs, 139 based on Foata normal form. 6/1116 useless extension candidates. Maximal degree in co-relation 7933. Up to 734 conditions per place. [2024-06-20 15:47:36,599 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 60 changer transitions 10/212 dead transitions. [2024-06-20 15:47:36,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 212 transitions, 2092 flow [2024-06-20 15:47:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:36,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-20 15:47:36,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-20 15:47:36,599 INFO L175 Difference]: Start difference. First operand has 293 places, 192 transitions, 1368 flow. Second operand 12 states and 155 transitions. [2024-06-20 15:47:36,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 212 transitions, 2092 flow [2024-06-20 15:47:37,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 212 transitions, 1994 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:37,289 INFO L231 Difference]: Finished difference. Result has 289 places, 188 transitions, 1381 flow [2024-06-20 15:47:37,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1381, PETRI_PLACES=289, PETRI_TRANSITIONS=188} [2024-06-20 15:47:37,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-20 15:47:37,289 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 188 transitions, 1381 flow [2024-06-20 15:47:37,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:37,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:37,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:37,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-20 15:47:37,290 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:37,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:37,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1902313608, now seen corresponding path program 25 times [2024-06-20 15:47:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:37,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370886709] [2024-06-20 15:47:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:38,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:38,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370886709] [2024-06-20 15:47:38,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370886709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:38,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:38,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888504839] [2024-06-20 15:47:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:38,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:38,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:38,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:39,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:39,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 188 transitions, 1381 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:39,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:39,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:39,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:39,513 INFO L124 PetriNetUnfolderBase]: 521/1123 cut-off events. [2024-06-20 15:47:39,514 INFO L125 PetriNetUnfolderBase]: For 269100/269100 co-relation queries the response was YES. [2024-06-20 15:47:39,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8690 conditions, 1123 events. 521/1123 cut-off events. For 269100/269100 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6827 event pairs, 150 based on Foata normal form. 6/1128 useless extension candidates. Maximal degree in co-relation 8576. Up to 843 conditions per place. [2024-06-20 15:47:39,525 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 43 changer transitions 7/207 dead transitions. [2024-06-20 15:47:39,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 207 transitions, 2089 flow [2024-06-20 15:47:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 15:47:39,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:47:39,525 INFO L175 Difference]: Start difference. First operand has 289 places, 188 transitions, 1381 flow. Second operand 12 states and 150 transitions. [2024-06-20 15:47:39,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 207 transitions, 2089 flow [2024-06-20 15:47:40,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 207 transitions, 1960 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:40,186 INFO L231 Difference]: Finished difference. Result has 285 places, 185 transitions, 1332 flow [2024-06-20 15:47:40,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1332, PETRI_PLACES=285, PETRI_TRANSITIONS=185} [2024-06-20 15:47:40,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-20 15:47:40,186 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 185 transitions, 1332 flow [2024-06-20 15:47:40,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:40,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:40,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:40,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-20 15:47:40,187 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:40,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash 185159194, now seen corresponding path program 26 times [2024-06-20 15:47:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:40,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715661205] [2024-06-20 15:47:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:40,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:42,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715661205] [2024-06-20 15:47:42,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715661205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:42,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:42,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:42,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862826865] [2024-06-20 15:47:42,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:42,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:42,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:42,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 185 transitions, 1332 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:42,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:42,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:42,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:42,619 INFO L124 PetriNetUnfolderBase]: 499/1073 cut-off events. [2024-06-20 15:47:42,620 INFO L125 PetriNetUnfolderBase]: For 230261/230261 co-relation queries the response was YES. [2024-06-20 15:47:42,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7788 conditions, 1073 events. 499/1073 cut-off events. For 230261/230261 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6431 event pairs, 136 based on Foata normal form. 6/1078 useless extension candidates. Maximal degree in co-relation 7676. Up to 905 conditions per place. [2024-06-20 15:47:42,629 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 30 changer transitions 10/200 dead transitions. [2024-06-20 15:47:42,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 200 transitions, 1782 flow [2024-06-20 15:47:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-20 15:47:42,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-20 15:47:42,630 INFO L175 Difference]: Start difference. First operand has 285 places, 185 transitions, 1332 flow. Second operand 12 states and 140 transitions. [2024-06-20 15:47:42,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 200 transitions, 1782 flow [2024-06-20 15:47:43,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 200 transitions, 1696 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:43,284 INFO L231 Difference]: Finished difference. Result has 283 places, 182 transitions, 1292 flow [2024-06-20 15:47:43,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1292, PETRI_PLACES=283, PETRI_TRANSITIONS=182} [2024-06-20 15:47:43,284 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-20 15:47:43,284 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 182 transitions, 1292 flow [2024-06-20 15:47:43,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:43,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:43,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:43,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-20 15:47:43,284 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:43,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:43,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1974184930, now seen corresponding path program 27 times [2024-06-20 15:47:43,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:43,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399615401] [2024-06-20 15:47:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:43,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:46,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:46,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399615401] [2024-06-20 15:47:46,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399615401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:46,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:46,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:46,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132984722] [2024-06-20 15:47:46,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:46,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:46,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:46,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:46,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 182 transitions, 1292 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:46,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:46,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:46,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:47,188 INFO L124 PetriNetUnfolderBase]: 496/1064 cut-off events. [2024-06-20 15:47:47,189 INFO L125 PetriNetUnfolderBase]: For 236532/236532 co-relation queries the response was YES. [2024-06-20 15:47:47,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7716 conditions, 1064 events. 496/1064 cut-off events. For 236532/236532 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6357 event pairs, 140 based on Foata normal form. 8/1071 useless extension candidates. Maximal degree in co-relation 7605. Up to 865 conditions per place. [2024-06-20 15:47:47,198 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 149 selfloop transitions, 38 changer transitions 7/197 dead transitions. [2024-06-20 15:47:47,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 197 transitions, 1746 flow [2024-06-20 15:47:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 15:47:47,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-20 15:47:47,199 INFO L175 Difference]: Start difference. First operand has 283 places, 182 transitions, 1292 flow. Second operand 12 states and 146 transitions. [2024-06-20 15:47:47,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 197 transitions, 1746 flow [2024-06-20 15:47:47,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 197 transitions, 1680 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:47,736 INFO L231 Difference]: Finished difference. Result has 279 places, 179 transitions, 1287 flow [2024-06-20 15:47:47,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1287, PETRI_PLACES=279, PETRI_TRANSITIONS=179} [2024-06-20 15:47:47,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-20 15:47:47,736 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 179 transitions, 1287 flow [2024-06-20 15:47:47,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:47,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:47,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:47,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-20 15:47:47,737 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:47,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash 258246032, now seen corresponding path program 28 times [2024-06-20 15:47:47,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287955824] [2024-06-20 15:47:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:49,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:49,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287955824] [2024-06-20 15:47:49,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287955824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:49,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:49,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:49,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000170434] [2024-06-20 15:47:49,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:49,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:49,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:49,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:49,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 179 transitions, 1287 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:49,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:49,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:49,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:50,402 INFO L124 PetriNetUnfolderBase]: 469/1011 cut-off events. [2024-06-20 15:47:50,402 INFO L125 PetriNetUnfolderBase]: For 190726/190726 co-relation queries the response was YES. [2024-06-20 15:47:50,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6656 conditions, 1011 events. 469/1011 cut-off events. For 190726/190726 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5971 event pairs, 128 based on Foata normal form. 8/1018 useless extension candidates. Maximal degree in co-relation 6547. Up to 818 conditions per place. [2024-06-20 15:47:50,411 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 37 changer transitions 9/194 dead transitions. [2024-06-20 15:47:50,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 194 transitions, 1735 flow [2024-06-20 15:47:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-20 15:47:50,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-20 15:47:50,412 INFO L175 Difference]: Start difference. First operand has 279 places, 179 transitions, 1287 flow. Second operand 12 states and 143 transitions. [2024-06-20 15:47:50,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 194 transitions, 1735 flow [2024-06-20 15:47:50,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 194 transitions, 1653 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:50,902 INFO L231 Difference]: Finished difference. Result has 277 places, 176 transitions, 1262 flow [2024-06-20 15:47:50,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1262, PETRI_PLACES=277, PETRI_TRANSITIONS=176} [2024-06-20 15:47:50,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-20 15:47:50,903 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 176 transitions, 1262 flow [2024-06-20 15:47:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:50,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:50,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:50,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-20 15:47:50,903 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:50,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash 794946046, now seen corresponding path program 29 times [2024-06-20 15:47:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:50,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864254970] [2024-06-20 15:47:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:50,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:53,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:53,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864254970] [2024-06-20 15:47:53,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864254970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:53,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:53,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:53,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55334820] [2024-06-20 15:47:53,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:53,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:53,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:53,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:53,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 176 transitions, 1262 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:53,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:53,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:53,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:54,014 INFO L124 PetriNetUnfolderBase]: 457/995 cut-off events. [2024-06-20 15:47:54,014 INFO L125 PetriNetUnfolderBase]: For 176002/176002 co-relation queries the response was YES. [2024-06-20 15:47:54,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6337 conditions, 995 events. 457/995 cut-off events. For 176002/176002 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5856 event pairs, 129 based on Foata normal form. 8/1002 useless extension candidates. Maximal degree in co-relation 6229. Up to 715 conditions per place. [2024-06-20 15:47:54,022 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 126 selfloop transitions, 53 changer transitions 9/191 dead transitions. [2024-06-20 15:47:54,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 191 transitions, 1704 flow [2024-06-20 15:47:54,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 15:47:54,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-20 15:47:54,023 INFO L175 Difference]: Start difference. First operand has 277 places, 176 transitions, 1262 flow. Second operand 12 states and 149 transitions. [2024-06-20 15:47:54,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 191 transitions, 1704 flow [2024-06-20 15:47:54,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 191 transitions, 1626 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:54,520 INFO L231 Difference]: Finished difference. Result has 273 places, 173 transitions, 1275 flow [2024-06-20 15:47:54,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1275, PETRI_PLACES=273, PETRI_TRANSITIONS=173} [2024-06-20 15:47:54,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-20 15:47:54,521 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 173 transitions, 1275 flow [2024-06-20 15:47:54,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:54,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:54,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:54,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-20 15:47:54,521 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:54,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:54,521 INFO L85 PathProgramCache]: Analyzing trace with hash 795185056, now seen corresponding path program 30 times [2024-06-20 15:47:54,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:54,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810777818] [2024-06-20 15:47:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:56,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810777818] [2024-06-20 15:47:56,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810777818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:56,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:56,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:56,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735919522] [2024-06-20 15:47:56,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:56,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:56,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:56,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:56,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 173 transitions, 1275 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:56,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:56,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:56,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:56,649 INFO L124 PetriNetUnfolderBase]: 433/947 cut-off events. [2024-06-20 15:47:56,649 INFO L125 PetriNetUnfolderBase]: For 138452/138452 co-relation queries the response was YES. [2024-06-20 15:47:56,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5568 conditions, 947 events. 433/947 cut-off events. For 138452/138452 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5543 event pairs, 112 based on Foata normal form. 6/952 useless extension candidates. Maximal degree in co-relation 5461. Up to 669 conditions per place. [2024-06-20 15:47:56,656 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 51 changer transitions 10/188 dead transitions. [2024-06-20 15:47:56,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 188 transitions, 1701 flow [2024-06-20 15:47:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:56,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-20 15:47:56,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 15:47:56,656 INFO L175 Difference]: Start difference. First operand has 273 places, 173 transitions, 1275 flow. Second operand 12 states and 148 transitions. [2024-06-20 15:47:56,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 188 transitions, 1701 flow [2024-06-20 15:47:57,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 188 transitions, 1591 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:57,041 INFO L231 Difference]: Finished difference. Result has 271 places, 170 transitions, 1255 flow [2024-06-20 15:47:57,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1255, PETRI_PLACES=271, PETRI_TRANSITIONS=170} [2024-06-20 15:47:57,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-20 15:47:57,042 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 170 transitions, 1255 flow [2024-06-20 15:47:57,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:57,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:57,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:57,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-20 15:47:57,042 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:57,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash -922694698, now seen corresponding path program 31 times [2024-06-20 15:47:57,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:57,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116556774] [2024-06-20 15:47:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:57,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:59,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:59,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116556774] [2024-06-20 15:47:59,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116556774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:59,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:59,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:59,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760610470] [2024-06-20 15:47:59,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:59,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:59,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:59,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:59,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:47:59,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 170 transitions, 1255 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:59,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:59,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:47:59,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:59,752 INFO L124 PetriNetUnfolderBase]: 441/967 cut-off events. [2024-06-20 15:47:59,752 INFO L125 PetriNetUnfolderBase]: For 159749/159749 co-relation queries the response was YES. [2024-06-20 15:47:59,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6151 conditions, 967 events. 441/967 cut-off events. For 159749/159749 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5651 event pairs, 133 based on Foata normal form. 6/972 useless extension candidates. Maximal degree in co-relation 6045. Up to 696 conditions per place. [2024-06-20 15:47:59,761 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 22 changer transitions 12/191 dead transitions. [2024-06-20 15:47:59,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 191 transitions, 1895 flow [2024-06-20 15:47:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 15:47:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 15:47:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-20 15:47:59,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-20 15:47:59,762 INFO L175 Difference]: Start difference. First operand has 271 places, 170 transitions, 1255 flow. Second operand 13 states and 155 transitions. [2024-06-20 15:47:59,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 191 transitions, 1895 flow [2024-06-20 15:48:00,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 191 transitions, 1785 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 15:48:00,134 INFO L231 Difference]: Finished difference. Result has 268 places, 166 transitions, 1176 flow [2024-06-20 15:48:00,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1176, PETRI_PLACES=268, PETRI_TRANSITIONS=166} [2024-06-20 15:48:00,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-20 15:48:00,135 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 166 transitions, 1176 flow [2024-06-20 15:48:00,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:00,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:00,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:00,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-20 15:48:00,135 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:00,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:00,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1894944170, now seen corresponding path program 32 times [2024-06-20 15:48:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:00,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094434267] [2024-06-20 15:48:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:00,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:01,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:01,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094434267] [2024-06-20 15:48:01,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094434267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:01,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:01,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833103089] [2024-06-20 15:48:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:01,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:01,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:01,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 166 transitions, 1176 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:01,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:01,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:01,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:02,395 INFO L124 PetriNetUnfolderBase]: 442/974 cut-off events. [2024-06-20 15:48:02,396 INFO L125 PetriNetUnfolderBase]: For 181302/181302 co-relation queries the response was YES. [2024-06-20 15:48:02,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6678 conditions, 974 events. 442/974 cut-off events. For 181302/181302 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5737 event pairs, 144 based on Foata normal form. 6/979 useless extension candidates. Maximal degree in co-relation 6573. Up to 784 conditions per place. [2024-06-20 15:48:02,403 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 18 changer transitions 10/186 dead transitions. [2024-06-20 15:48:02,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 186 transitions, 1826 flow [2024-06-20 15:48:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 15:48:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 15:48:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-20 15:48:02,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746898263027295 [2024-06-20 15:48:02,404 INFO L175 Difference]: Start difference. First operand has 268 places, 166 transitions, 1176 flow. Second operand 13 states and 151 transitions. [2024-06-20 15:48:02,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 186 transitions, 1826 flow [2024-06-20 15:48:02,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 186 transitions, 1785 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:02,829 INFO L231 Difference]: Finished difference. Result has 264 places, 160 transitions, 1123 flow [2024-06-20 15:48:02,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1123, PETRI_PLACES=264, PETRI_TRANSITIONS=160} [2024-06-20 15:48:02,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-20 15:48:02,829 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 160 transitions, 1123 flow [2024-06-20 15:48:02,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:02,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:02,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:02,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-20 15:48:02,830 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:02,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1895232470, now seen corresponding path program 33 times [2024-06-20 15:48:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:02,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185350348] [2024-06-20 15:48:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:02,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:04,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:04,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185350348] [2024-06-20 15:48:04,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185350348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:04,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:04,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:48:04,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233038538] [2024-06-20 15:48:04,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:04,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:48:04,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:48:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:48:04,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:04,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 160 transitions, 1123 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:04,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:04,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:04,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:04,751 INFO L124 PetriNetUnfolderBase]: 428/948 cut-off events. [2024-06-20 15:48:04,751 INFO L125 PetriNetUnfolderBase]: For 169546/169546 co-relation queries the response was YES. [2024-06-20 15:48:04,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6459 conditions, 948 events. 428/948 cut-off events. For 169546/169546 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5546 event pairs, 140 based on Foata normal form. 6/953 useless extension candidates. Maximal degree in co-relation 6357. Up to 696 conditions per place. [2024-06-20 15:48:04,759 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 15 changer transitions 13/178 dead transitions. [2024-06-20 15:48:04,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 178 transitions, 1723 flow [2024-06-20 15:48:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:48:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:48:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:48:04,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 15:48:04,760 INFO L175 Difference]: Start difference. First operand has 264 places, 160 transitions, 1123 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:48:04,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 178 transitions, 1723 flow [2024-06-20 15:48:05,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 178 transitions, 1682 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:05,092 INFO L231 Difference]: Finished difference. Result has 259 places, 153 transitions, 1061 flow [2024-06-20 15:48:05,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1061, PETRI_PLACES=259, PETRI_TRANSITIONS=153} [2024-06-20 15:48:05,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-20 15:48:05,093 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 153 transitions, 1061 flow [2024-06-20 15:48:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:05,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:05,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-20 15:48:05,093 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1886661590, now seen corresponding path program 34 times [2024-06-20 15:48:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16022569] [2024-06-20 15:48:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:06,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:06,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16022569] [2024-06-20 15:48:06,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16022569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:06,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:06,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:06,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741196274] [2024-06-20 15:48:06,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:06,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:06,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:06,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:06,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:07,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:07,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 153 transitions, 1061 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:07,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:07,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:07,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:07,584 INFO L124 PetriNetUnfolderBase]: 404/900 cut-off events. [2024-06-20 15:48:07,584 INFO L125 PetriNetUnfolderBase]: For 169242/169242 co-relation queries the response was YES. [2024-06-20 15:48:07,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6065 conditions, 900 events. 404/900 cut-off events. For 169242/169242 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5186 event pairs, 145 based on Foata normal form. 8/907 useless extension candidates. Maximal degree in co-relation 5963. Up to 791 conditions per place. [2024-06-20 15:48:07,590 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 14 changer transitions 9/168 dead transitions. [2024-06-20 15:48:07,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 168 transitions, 1457 flow [2024-06-20 15:48:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-20 15:48:07,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-20 15:48:07,591 INFO L175 Difference]: Start difference. First operand has 259 places, 153 transitions, 1061 flow. Second operand 12 states and 134 transitions. [2024-06-20 15:48:07,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 168 transitions, 1457 flow [2024-06-20 15:48:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 168 transitions, 1413 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:07,947 INFO L231 Difference]: Finished difference. Result has 252 places, 150 transitions, 1023 flow [2024-06-20 15:48:07,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1023, PETRI_PLACES=252, PETRI_TRANSITIONS=150} [2024-06-20 15:48:07,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-20 15:48:07,947 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 150 transitions, 1023 flow [2024-06-20 15:48:07,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:07,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:07,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:07,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-20 15:48:07,948 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:07,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1265281588, now seen corresponding path program 35 times [2024-06-20 15:48:07,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:07,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72911049] [2024-06-20 15:48:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:07,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:09,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:09,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72911049] [2024-06-20 15:48:09,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72911049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:09,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:09,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:09,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7680493] [2024-06-20 15:48:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:09,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:09,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:09,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:09,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:09,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 150 transitions, 1023 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:09,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:09,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:09,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:10,034 INFO L124 PetriNetUnfolderBase]: 380/852 cut-off events. [2024-06-20 15:48:10,034 INFO L125 PetriNetUnfolderBase]: For 132648/132648 co-relation queries the response was YES. [2024-06-20 15:48:10,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5240 conditions, 852 events. 380/852 cut-off events. For 132648/132648 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4829 event pairs, 128 based on Foata normal form. 6/857 useless extension candidates. Maximal degree in co-relation 5142. Up to 739 conditions per place. [2024-06-20 15:48:10,042 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 11 changer transitions 14/165 dead transitions. [2024-06-20 15:48:10,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 165 transitions, 1379 flow [2024-06-20 15:48:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 15:48:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 15:48:10,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 142 transitions. [2024-06-20 15:48:10,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523573200992556 [2024-06-20 15:48:10,043 INFO L175 Difference]: Start difference. First operand has 252 places, 150 transitions, 1023 flow. Second operand 13 states and 142 transitions. [2024-06-20 15:48:10,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 165 transitions, 1379 flow [2024-06-20 15:48:10,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 165 transitions, 1335 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:10,315 INFO L231 Difference]: Finished difference. Result has 251 places, 144 transitions, 963 flow [2024-06-20 15:48:10,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=963, PETRI_PLACES=251, PETRI_TRANSITIONS=144} [2024-06-20 15:48:10,316 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-20 15:48:10,316 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 144 transitions, 963 flow [2024-06-20 15:48:10,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:10,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:10,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:10,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-20 15:48:10,316 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:10,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:10,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1143905933, now seen corresponding path program 1 times [2024-06-20 15:48:10,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:10,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272043329] [2024-06-20 15:48:10,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:10,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:11,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:11,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272043329] [2024-06-20 15:48:11,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272043329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:11,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:11,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:11,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762586913] [2024-06-20 15:48:11,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:11,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:12,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:12,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 144 transitions, 963 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:12,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:12,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:12,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:12,461 INFO L124 PetriNetUnfolderBase]: 371/829 cut-off events. [2024-06-20 15:48:12,461 INFO L125 PetriNetUnfolderBase]: For 130395/130395 co-relation queries the response was YES. [2024-06-20 15:48:12,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 829 events. 371/829 cut-off events. For 130395/130395 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4643 event pairs, 84 based on Foata normal form. 6/834 useless extension candidates. Maximal degree in co-relation 5014. Up to 578 conditions per place. [2024-06-20 15:48:12,467 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 13 changer transitions 40/168 dead transitions. [2024-06-20 15:48:12,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 168 transitions, 1359 flow [2024-06-20 15:48:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-20 15:48:12,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-20 15:48:12,468 INFO L175 Difference]: Start difference. First operand has 251 places, 144 transitions, 963 flow. Second operand 12 states and 142 transitions. [2024-06-20 15:48:12,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 168 transitions, 1359 flow [2024-06-20 15:48:12,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 168 transitions, 1303 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:12,684 INFO L231 Difference]: Finished difference. Result has 243 places, 121 transitions, 800 flow [2024-06-20 15:48:12,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=800, PETRI_PLACES=243, PETRI_TRANSITIONS=121} [2024-06-20 15:48:12,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-20 15:48:12,684 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 121 transitions, 800 flow [2024-06-20 15:48:12,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:12,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:12,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:12,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-20 15:48:12,685 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:12,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:12,685 INFO L85 PathProgramCache]: Analyzing trace with hash -657657767, now seen corresponding path program 2 times [2024-06-20 15:48:12,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:12,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63174946] [2024-06-20 15:48:12,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:12,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:14,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:14,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63174946] [2024-06-20 15:48:14,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63174946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:14,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:14,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:14,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161631629] [2024-06-20 15:48:14,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:14,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:14,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:14,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:14,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:14,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:14,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 121 transitions, 800 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:14,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:14,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:14,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:15,343 INFO L124 PetriNetUnfolderBase]: 295/663 cut-off events. [2024-06-20 15:48:15,344 INFO L125 PetriNetUnfolderBase]: For 127063/127063 co-relation queries the response was YES. [2024-06-20 15:48:15,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4532 conditions, 663 events. 295/663 cut-off events. For 127063/127063 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3483 event pairs, 81 based on Foata normal form. 6/668 useless extension candidates. Maximal degree in co-relation 4437. Up to 540 conditions per place. [2024-06-20 15:48:15,349 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 20 changer transitions 10/138 dead transitions. [2024-06-20 15:48:15,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 138 transitions, 1116 flow [2024-06-20 15:48:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-20 15:48:15,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-20 15:48:15,350 INFO L175 Difference]: Start difference. First operand has 243 places, 121 transitions, 800 flow. Second operand 12 states and 134 transitions. [2024-06-20 15:48:15,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 138 transitions, 1116 flow [2024-06-20 15:48:15,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 138 transitions, 1052 flow, removed 9 selfloop flow, removed 18 redundant places. [2024-06-20 15:48:15,595 INFO L231 Difference]: Finished difference. Result has 213 places, 118 transitions, 764 flow [2024-06-20 15:48:15,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=764, PETRI_PLACES=213, PETRI_TRANSITIONS=118} [2024-06-20 15:48:15,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-20 15:48:15,595 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 118 transitions, 764 flow [2024-06-20 15:48:15,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:15,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:15,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:15,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-20 15:48:15,596 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:15,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash 22046997, now seen corresponding path program 3 times [2024-06-20 15:48:15,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:15,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579492503] [2024-06-20 15:48:15,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:15,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579492503] [2024-06-20 15:48:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579492503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:17,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628921632] [2024-06-20 15:48:17,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:17,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:17,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:17,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:17,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:18,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:18,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 118 transitions, 764 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:18,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:18,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:18,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:18,499 INFO L124 PetriNetUnfolderBase]: 288/650 cut-off events. [2024-06-20 15:48:18,499 INFO L125 PetriNetUnfolderBase]: For 104138/104138 co-relation queries the response was YES. [2024-06-20 15:48:18,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 650 events. 288/650 cut-off events. For 104138/104138 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3419 event pairs, 77 based on Foata normal form. 6/655 useless extension candidates. Maximal degree in co-relation 4158. Up to 516 conditions per place. [2024-06-20 15:48:18,504 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 19 changer transitions 10/136 dead transitions. [2024-06-20 15:48:18,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 136 transitions, 1078 flow [2024-06-20 15:48:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-20 15:48:18,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-20 15:48:18,505 INFO L175 Difference]: Start difference. First operand has 213 places, 118 transitions, 764 flow. Second operand 12 states and 135 transitions. [2024-06-20 15:48:18,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 136 transitions, 1078 flow [2024-06-20 15:48:18,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 136 transitions, 1032 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:18,707 INFO L231 Difference]: Finished difference. Result has 209 places, 114 transitions, 740 flow [2024-06-20 15:48:18,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=740, PETRI_PLACES=209, PETRI_TRANSITIONS=114} [2024-06-20 15:48:18,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-20 15:48:18,707 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 114 transitions, 740 flow [2024-06-20 15:48:18,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:18,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:18,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:18,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-20 15:48:18,708 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:18,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash 221492937, now seen corresponding path program 4 times [2024-06-20 15:48:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:18,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413702521] [2024-06-20 15:48:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:22,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:22,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413702521] [2024-06-20 15:48:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413702521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:22,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:22,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:22,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144879664] [2024-06-20 15:48:22,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:22,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:22,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:22,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:22,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:22,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 114 transitions, 740 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:22,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:22,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:22,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:22,929 INFO L124 PetriNetUnfolderBase]: 277/627 cut-off events. [2024-06-20 15:48:22,929 INFO L125 PetriNetUnfolderBase]: For 98653/98653 co-relation queries the response was YES. [2024-06-20 15:48:22,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 627 events. 277/627 cut-off events. For 98653/98653 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3240 event pairs, 79 based on Foata normal form. 6/632 useless extension candidates. Maximal degree in co-relation 4038. Up to 512 conditions per place. [2024-06-20 15:48:22,933 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 7 changer transitions 27/131 dead transitions. [2024-06-20 15:48:22,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 131 transitions, 1042 flow [2024-06-20 15:48:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-20 15:48:22,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 15:48:22,934 INFO L175 Difference]: Start difference. First operand has 209 places, 114 transitions, 740 flow. Second operand 12 states and 132 transitions. [2024-06-20 15:48:22,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 131 transitions, 1042 flow [2024-06-20 15:48:23,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 131 transitions, 996 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 15:48:23,109 INFO L231 Difference]: Finished difference. Result has 203 places, 100 transitions, 621 flow [2024-06-20 15:48:23,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=621, PETRI_PLACES=203, PETRI_TRANSITIONS=100} [2024-06-20 15:48:23,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-20 15:48:23,109 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 100 transitions, 621 flow [2024-06-20 15:48:23,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:23,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:23,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:23,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-20 15:48:23,110 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:23,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:23,110 INFO L85 PathProgramCache]: Analyzing trace with hash -484410075, now seen corresponding path program 5 times [2024-06-20 15:48:23,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:23,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890653850] [2024-06-20 15:48:23,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:23,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890653850] [2024-06-20 15:48:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890653850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:25,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:25,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:25,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125528409] [2024-06-20 15:48:25,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:25,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:25,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:25,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:25,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 100 transitions, 621 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:25,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:25,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:25,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:25,644 INFO L124 PetriNetUnfolderBase]: 241/543 cut-off events. [2024-06-20 15:48:25,644 INFO L125 PetriNetUnfolderBase]: For 75668/75668 co-relation queries the response was YES. [2024-06-20 15:48:25,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 543 events. 241/543 cut-off events. For 75668/75668 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2707 event pairs, 66 based on Foata normal form. 6/548 useless extension candidates. Maximal degree in co-relation 3235. Up to 446 conditions per place. [2024-06-20 15:48:25,648 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 15 changer transitions 10/115 dead transitions. [2024-06-20 15:48:25,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 115 transitions, 885 flow [2024-06-20 15:48:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-20 15:48:25,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-20 15:48:25,648 INFO L175 Difference]: Start difference. First operand has 203 places, 100 transitions, 621 flow. Second operand 12 states and 130 transitions. [2024-06-20 15:48:25,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 115 transitions, 885 flow [2024-06-20 15:48:25,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 115 transitions, 831 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-06-20 15:48:25,760 INFO L231 Difference]: Finished difference. Result has 180 places, 97 transitions, 587 flow [2024-06-20 15:48:25,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=587, PETRI_PLACES=180, PETRI_TRANSITIONS=97} [2024-06-20 15:48:25,760 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-20 15:48:25,760 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 97 transitions, 587 flow [2024-06-20 15:48:25,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:25,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:25,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:25,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-20 15:48:25,761 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:25,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:25,761 INFO L85 PathProgramCache]: Analyzing trace with hash -339935113, now seen corresponding path program 6 times [2024-06-20 15:48:25,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:25,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974851150] [2024-06-20 15:48:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:25,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:27,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:27,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974851150] [2024-06-20 15:48:27,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974851150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:27,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:27,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:27,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563995905] [2024-06-20 15:48:27,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:27,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:27,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:27,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:27,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:28,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:28,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 97 transitions, 587 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:28,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:28,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:28,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:28,453 INFO L124 PetriNetUnfolderBase]: 234/530 cut-off events. [2024-06-20 15:48:28,453 INFO L125 PetriNetUnfolderBase]: For 60143/60143 co-relation queries the response was YES. [2024-06-20 15:48:28,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 530 events. 234/530 cut-off events. For 60143/60143 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2617 event pairs, 64 based on Foata normal form. 6/535 useless extension candidates. Maximal degree in co-relation 2981. Up to 428 conditions per place. [2024-06-20 15:48:28,456 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 9 changer transitions 19/113 dead transitions. [2024-06-20 15:48:28,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 113 transitions, 847 flow [2024-06-20 15:48:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-20 15:48:28,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-20 15:48:28,457 INFO L175 Difference]: Start difference. First operand has 180 places, 97 transitions, 587 flow. Second operand 12 states and 130 transitions. [2024-06-20 15:48:28,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 113 transitions, 847 flow [2024-06-20 15:48:28,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 113 transitions, 811 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:28,549 INFO L231 Difference]: Finished difference. Result has 175 places, 89 transitions, 537 flow [2024-06-20 15:48:28,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=537, PETRI_PLACES=175, PETRI_TRANSITIONS=89} [2024-06-20 15:48:28,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-20 15:48:28,549 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 89 transitions, 537 flow [2024-06-20 15:48:28,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:28,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:28,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:28,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-20 15:48:28,550 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:28,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash -286415069, now seen corresponding path program 7 times [2024-06-20 15:48:28,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:28,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191911964] [2024-06-20 15:48:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:31,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:31,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191911964] [2024-06-20 15:48:31,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191911964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:31,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:31,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545066831] [2024-06-20 15:48:31,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:31,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:31,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:31,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 89 transitions, 537 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:31,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:31,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:31,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:32,175 INFO L124 PetriNetUnfolderBase]: 218/496 cut-off events. [2024-06-20 15:48:32,175 INFO L125 PetriNetUnfolderBase]: For 56399/56399 co-relation queries the response was YES. [2024-06-20 15:48:32,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2903 conditions, 496 events. 218/496 cut-off events. For 56399/56399 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2409 event pairs, 62 based on Foata normal form. 6/501 useless extension candidates. Maximal degree in co-relation 2831. Up to 399 conditions per place. [2024-06-20 15:48:32,178 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 3 changer transitions 27/105 dead transitions. [2024-06-20 15:48:32,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 105 transitions, 781 flow [2024-06-20 15:48:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:32,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-20 15:48:32,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-20 15:48:32,179 INFO L175 Difference]: Start difference. First operand has 175 places, 89 transitions, 537 flow. Second operand 12 states and 129 transitions. [2024-06-20 15:48:32,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 105 transitions, 781 flow [2024-06-20 15:48:32,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 105 transitions, 751 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:32,273 INFO L231 Difference]: Finished difference. Result has 164 places, 77 transitions, 447 flow [2024-06-20 15:48:32,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=447, PETRI_PLACES=164, PETRI_TRANSITIONS=77} [2024-06-20 15:48:32,273 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-20 15:48:32,273 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 77 transitions, 447 flow [2024-06-20 15:48:32,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:32,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:32,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:32,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-20 15:48:32,274 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:32,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:32,274 INFO L85 PathProgramCache]: Analyzing trace with hash 303269971, now seen corresponding path program 8 times [2024-06-20 15:48:32,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:32,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397248463] [2024-06-20 15:48:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:32,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:34,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397248463] [2024-06-20 15:48:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397248463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:34,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:34,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556944894] [2024-06-20 15:48:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:34,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:34,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:34,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:34,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:34,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:34,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 77 transitions, 447 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:34,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:34,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:34,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:34,870 INFO L124 PetriNetUnfolderBase]: 198/447 cut-off events. [2024-06-20 15:48:34,870 INFO L125 PetriNetUnfolderBase]: For 47503/47503 co-relation queries the response was YES. [2024-06-20 15:48:34,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 447 events. 198/447 cut-off events. For 47503/47503 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2144 event pairs, 62 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 2553. Up to 293 conditions per place. [2024-06-20 15:48:34,873 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 50 selfloop transitions, 27 changer transitions 10/90 dead transitions. [2024-06-20 15:48:34,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 90 transitions, 653 flow [2024-06-20 15:48:34,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-20 15:48:34,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-20 15:48:34,873 INFO L175 Difference]: Start difference. First operand has 164 places, 77 transitions, 447 flow. Second operand 12 states and 131 transitions. [2024-06-20 15:48:34,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 90 transitions, 653 flow [2024-06-20 15:48:34,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 90 transitions, 623 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-20 15:48:34,953 INFO L231 Difference]: Finished difference. Result has 143 places, 74 transitions, 459 flow [2024-06-20 15:48:34,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=459, PETRI_PLACES=143, PETRI_TRANSITIONS=74} [2024-06-20 15:48:34,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-20 15:48:34,953 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 74 transitions, 459 flow [2024-06-20 15:48:34,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:34,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:34,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:34,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-20 15:48:34,953 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:34,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1911330175, now seen corresponding path program 9 times [2024-06-20 15:48:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568083354] [2024-06-20 15:48:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:37,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:37,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568083354] [2024-06-20 15:48:37,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568083354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:37,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:37,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:37,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720993722] [2024-06-20 15:48:37,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:37,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:37,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:37,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:37,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:37,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 74 transitions, 459 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:37,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:37,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:37,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:37,708 INFO L124 PetriNetUnfolderBase]: 191/434 cut-off events. [2024-06-20 15:48:37,708 INFO L125 PetriNetUnfolderBase]: For 36618/36618 co-relation queries the response was YES. [2024-06-20 15:48:37,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 434 events. 191/434 cut-off events. For 36618/36618 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2053 event pairs, 56 based on Foata normal form. 6/440 useless extension candidates. Maximal degree in co-relation 2390. Up to 257 conditions per place. [2024-06-20 15:48:37,710 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 47 selfloop transitions, 28 changer transitions 10/88 dead transitions. [2024-06-20 15:48:37,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 88 transitions, 663 flow [2024-06-20 15:48:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-20 15:48:37,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 15:48:37,711 INFO L175 Difference]: Start difference. First operand has 143 places, 74 transitions, 459 flow. Second operand 12 states and 132 transitions. [2024-06-20 15:48:37,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 88 transitions, 663 flow [2024-06-20 15:48:37,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 88 transitions, 603 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:37,766 INFO L231 Difference]: Finished difference. Result has 139 places, 70 transitions, 439 flow [2024-06-20 15:48:37,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=439, PETRI_PLACES=139, PETRI_TRANSITIONS=70} [2024-06-20 15:48:37,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-20 15:48:37,766 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 70 transitions, 439 flow [2024-06-20 15:48:37,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:37,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:37,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:37,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-20 15:48:37,767 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:37,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1410585637, now seen corresponding path program 10 times [2024-06-20 15:48:37,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:37,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738623525] [2024-06-20 15:48:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:37,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:39,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:39,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738623525] [2024-06-20 15:48:39,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738623525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:39,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:39,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553178290] [2024-06-20 15:48:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:39,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:39,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:39,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:39,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:39,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 70 transitions, 439 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:39,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:39,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:39,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:39,866 INFO L124 PetriNetUnfolderBase]: 165/378 cut-off events. [2024-06-20 15:48:39,867 INFO L125 PetriNetUnfolderBase]: For 26918/26918 co-relation queries the response was YES. [2024-06-20 15:48:39,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 378 events. 165/378 cut-off events. For 26918/26918 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1701 event pairs, 47 based on Foata normal form. 6/384 useless extension candidates. Maximal degree in co-relation 1918. Up to 268 conditions per place. [2024-06-20 15:48:39,869 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 49 selfloop transitions, 18 changer transitions 13/83 dead transitions. [2024-06-20 15:48:39,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 83 transitions, 631 flow [2024-06-20 15:48:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-20 15:48:39,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-20 15:48:39,870 INFO L175 Difference]: Start difference. First operand has 139 places, 70 transitions, 439 flow. Second operand 12 states and 133 transitions. [2024-06-20 15:48:39,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 83 transitions, 631 flow [2024-06-20 15:48:39,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 83 transitions, 567 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 15:48:39,901 INFO L231 Difference]: Finished difference. Result has 133 places, 65 transitions, 390 flow [2024-06-20 15:48:39,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=390, PETRI_PLACES=133, PETRI_TRANSITIONS=65} [2024-06-20 15:48:39,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-20 15:48:39,902 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 65 transitions, 390 flow [2024-06-20 15:48:39,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:39,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:39,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:39,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-20 15:48:39,902 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:39,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:39,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1165443307, now seen corresponding path program 11 times [2024-06-20 15:48:39,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:39,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296792113] [2024-06-20 15:48:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:39,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296792113] [2024-06-20 15:48:41,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296792113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:41,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:41,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11256572] [2024-06-20 15:48:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:41,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:41,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 65 transitions, 390 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:41,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:41,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:41,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:42,076 INFO L124 PetriNetUnfolderBase]: 156/357 cut-off events. [2024-06-20 15:48:42,076 INFO L125 PetriNetUnfolderBase]: For 23582/23582 co-relation queries the response was YES. [2024-06-20 15:48:42,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 357 events. 156/357 cut-off events. For 23582/23582 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1573 event pairs, 47 based on Foata normal form. 6/363 useless extension candidates. Maximal degree in co-relation 1780. Up to 258 conditions per place. [2024-06-20 15:48:42,078 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 49 selfloop transitions, 15 changer transitions 11/78 dead transitions. [2024-06-20 15:48:42,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 78 transitions, 572 flow [2024-06-20 15:48:42,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-20 15:48:42,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-20 15:48:42,079 INFO L175 Difference]: Start difference. First operand has 133 places, 65 transitions, 390 flow. Second operand 12 states and 134 transitions. [2024-06-20 15:48:42,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 78 transitions, 572 flow [2024-06-20 15:48:42,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 78 transitions, 522 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:42,111 INFO L231 Difference]: Finished difference. Result has 124 places, 61 transitions, 356 flow [2024-06-20 15:48:42,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=356, PETRI_PLACES=124, PETRI_TRANSITIONS=61} [2024-06-20 15:48:42,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-20 15:48:42,111 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 61 transitions, 356 flow [2024-06-20 15:48:42,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:42,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:42,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:42,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-20 15:48:42,112 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:42,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:42,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2110776115, now seen corresponding path program 12 times [2024-06-20 15:48:42,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:42,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304679419] [2024-06-20 15:48:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:42,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:44,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304679419] [2024-06-20 15:48:44,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304679419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:44,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:44,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:44,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220796543] [2024-06-20 15:48:44,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:44,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:44,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:44,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:44,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:44,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:44,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 61 transitions, 356 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:44,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:44,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:44,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:44,970 INFO L124 PetriNetUnfolderBase]: 133/306 cut-off events. [2024-06-20 15:48:44,970 INFO L125 PetriNetUnfolderBase]: For 14876/14876 co-relation queries the response was YES. [2024-06-20 15:48:44,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 306 events. 133/306 cut-off events. For 14876/14876 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1267 event pairs, 34 based on Foata normal form. 6/312 useless extension candidates. Maximal degree in co-relation 1308. Up to 179 conditions per place. [2024-06-20 15:48:44,971 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 40 selfloop transitions, 18 changer transitions 13/74 dead transitions. [2024-06-20 15:48:44,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 74 transitions, 528 flow [2024-06-20 15:48:44,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-20 15:48:44,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-20 15:48:44,972 INFO L175 Difference]: Start difference. First operand has 124 places, 61 transitions, 356 flow. Second operand 12 states and 131 transitions. [2024-06-20 15:48:44,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 74 transitions, 528 flow [2024-06-20 15:48:44,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 74 transitions, 490 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:44,988 INFO L231 Difference]: Finished difference. Result has 118 places, 56 transitions, 333 flow [2024-06-20 15:48:44,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=333, PETRI_PLACES=118, PETRI_TRANSITIONS=56} [2024-06-20 15:48:44,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-20 15:48:44,989 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 56 transitions, 333 flow [2024-06-20 15:48:44,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:44,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:44,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:44,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-20 15:48:44,989 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:44,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:44,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2018266713, now seen corresponding path program 13 times [2024-06-20 15:48:44,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:44,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415786829] [2024-06-20 15:48:44,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:44,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:46,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:46,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415786829] [2024-06-20 15:48:46,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415786829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:46,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:46,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653435599] [2024-06-20 15:48:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:46,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:47,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:47,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 56 transitions, 333 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:47,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:47,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:47,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:47,386 INFO L124 PetriNetUnfolderBase]: 124/285 cut-off events. [2024-06-20 15:48:47,386 INFO L125 PetriNetUnfolderBase]: For 12786/12786 co-relation queries the response was YES. [2024-06-20 15:48:47,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 285 events. 124/285 cut-off events. For 12786/12786 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1141 event pairs, 34 based on Foata normal form. 6/291 useless extension candidates. Maximal degree in co-relation 1220. Up to 208 conditions per place. [2024-06-20 15:48:47,387 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 43 selfloop transitions, 13 changer transitions 10/69 dead transitions. [2024-06-20 15:48:47,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 69 transitions, 495 flow [2024-06-20 15:48:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-20 15:48:47,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-20 15:48:47,388 INFO L175 Difference]: Start difference. First operand has 118 places, 56 transitions, 333 flow. Second operand 12 states and 130 transitions. [2024-06-20 15:48:47,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 69 transitions, 495 flow [2024-06-20 15:48:47,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 69 transitions, 449 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:47,400 INFO L231 Difference]: Finished difference. Result has 109 places, 53 transitions, 302 flow [2024-06-20 15:48:47,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=302, PETRI_PLACES=109, PETRI_TRANSITIONS=53} [2024-06-20 15:48:47,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-20 15:48:47,400 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 53 transitions, 302 flow [2024-06-20 15:48:47,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:47,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:47,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:47,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-20 15:48:47,401 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:47,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1166699179, now seen corresponding path program 14 times [2024-06-20 15:48:47,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:47,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140512066] [2024-06-20 15:48:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:49,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:49,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140512066] [2024-06-20 15:48:49,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140512066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:49,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:49,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556691867] [2024-06-20 15:48:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:49,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:49,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:49,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:49,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 53 transitions, 302 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:49,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:49,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:49,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:50,275 INFO L124 PetriNetUnfolderBase]: 117/272 cut-off events. [2024-06-20 15:48:50,275 INFO L125 PetriNetUnfolderBase]: For 10194/10194 co-relation queries the response was YES. [2024-06-20 15:48:50,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 272 events. 117/272 cut-off events. For 10194/10194 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1066 event pairs, 34 based on Foata normal form. 6/278 useless extension candidates. Maximal degree in co-relation 1126. Up to 159 conditions per place. [2024-06-20 15:48:50,276 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 35 selfloop transitions, 13 changer transitions 15/66 dead transitions. [2024-06-20 15:48:50,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 66 transitions, 458 flow [2024-06-20 15:48:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-20 15:48:50,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-20 15:48:50,277 INFO L175 Difference]: Start difference. First operand has 109 places, 53 transitions, 302 flow. Second operand 12 states and 131 transitions. [2024-06-20 15:48:50,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 66 transitions, 458 flow [2024-06-20 15:48:50,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 66 transitions, 426 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:50,285 INFO L231 Difference]: Finished difference. Result has 105 places, 47 transitions, 271 flow [2024-06-20 15:48:50,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=271, PETRI_PLACES=105, PETRI_TRANSITIONS=47} [2024-06-20 15:48:50,285 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-20 15:48:50,285 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 47 transitions, 271 flow [2024-06-20 15:48:50,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:50,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:50,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:50,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-20 15:48:50,286 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:50,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1437344707, now seen corresponding path program 15 times [2024-06-20 15:48:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:50,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16344033] [2024-06-20 15:48:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:50,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:52,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:52,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16344033] [2024-06-20 15:48:52,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16344033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:52,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:52,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275157662] [2024-06-20 15:48:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:52,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:52,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:52,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:52,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 47 transitions, 271 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:52,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:52,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:52,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:52,943 INFO L124 PetriNetUnfolderBase]: 107/248 cut-off events. [2024-06-20 15:48:52,943 INFO L125 PetriNetUnfolderBase]: For 9038/9038 co-relation queries the response was YES. [2024-06-20 15:48:52,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 248 events. 107/248 cut-off events. For 9038/9038 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 924 event pairs, 34 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 1038. Up to 176 conditions per place. [2024-06-20 15:48:52,944 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 35 selfloop transitions, 10 changer transitions 12/60 dead transitions. [2024-06-20 15:48:52,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 60 transitions, 415 flow [2024-06-20 15:48:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:52,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-20 15:48:52,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-20 15:48:52,945 INFO L175 Difference]: Start difference. First operand has 105 places, 47 transitions, 271 flow. Second operand 12 states and 130 transitions. [2024-06-20 15:48:52,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 60 transitions, 415 flow [2024-06-20 15:48:52,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 60 transitions, 377 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:52,951 INFO L231 Difference]: Finished difference. Result has 95 places, 43 transitions, 237 flow [2024-06-20 15:48:52,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=237, PETRI_PLACES=95, PETRI_TRANSITIONS=43} [2024-06-20 15:48:52,952 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-20 15:48:52,952 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 43 transitions, 237 flow [2024-06-20 15:48:52,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:52,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:52,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:52,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-20 15:48:52,952 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:52,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash 237515813, now seen corresponding path program 16 times [2024-06-20 15:48:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:52,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624635415] [2024-06-20 15:48:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:52,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:54,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:54,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624635415] [2024-06-20 15:48:54,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624635415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:54,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:54,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:54,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189190603] [2024-06-20 15:48:54,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:54,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:54,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:54,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:54,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:55,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:55,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 43 transitions, 237 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:55,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:55,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:55,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:55,382 INFO L124 PetriNetUnfolderBase]: 99/230 cut-off events. [2024-06-20 15:48:55,382 INFO L125 PetriNetUnfolderBase]: For 6390/6390 co-relation queries the response was YES. [2024-06-20 15:48:55,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 230 events. 99/230 cut-off events. For 6390/6390 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 828 event pairs, 30 based on Foata normal form. 6/236 useless extension candidates. Maximal degree in co-relation 924. Up to 156 conditions per place. [2024-06-20 15:48:55,383 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 31 selfloop transitions, 8 changer transitions 16/58 dead transitions. [2024-06-20 15:48:55,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 58 transitions, 381 flow [2024-06-20 15:48:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-20 15:48:55,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 15:48:55,384 INFO L175 Difference]: Start difference. First operand has 95 places, 43 transitions, 237 flow. Second operand 12 states and 128 transitions. [2024-06-20 15:48:55,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 58 transitions, 381 flow [2024-06-20 15:48:55,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 58 transitions, 353 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:55,389 INFO L231 Difference]: Finished difference. Result has 89 places, 38 transitions, 207 flow [2024-06-20 15:48:55,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=77, 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=12, PETRI_FLOW=207, PETRI_PLACES=89, PETRI_TRANSITIONS=38} [2024-06-20 15:48:55,390 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-20 15:48:55,390 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 38 transitions, 207 flow [2024-06-20 15:48:55,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:55,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:55,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-20 15:48:55,390 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:55,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1359382717, now seen corresponding path program 17 times [2024-06-20 15:48:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:55,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524741680] [2024-06-20 15:48:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:57,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:57,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524741680] [2024-06-20 15:48:57,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524741680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:57,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:57,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:57,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110348285] [2024-06-20 15:48:57,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:57,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:57,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:57,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:57,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:48:57,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 38 transitions, 207 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:57,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:57,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:48:57,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:57,879 INFO L124 PetriNetUnfolderBase]: 84/199 cut-off events. [2024-06-20 15:48:57,879 INFO L125 PetriNetUnfolderBase]: For 5024/5028 co-relation queries the response was YES. [2024-06-20 15:48:57,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 199 events. 84/199 cut-off events. For 5024/5028 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 679 event pairs, 30 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 806. Up to 128 conditions per place. [2024-06-20 15:48:57,880 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 27 selfloop transitions, 11 changer transitions 10/51 dead transitions. [2024-06-20 15:48:57,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 51 transitions, 333 flow [2024-06-20 15:48:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-20 15:48:57,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 15:48:57,881 INFO L175 Difference]: Start difference. First operand has 89 places, 38 transitions, 207 flow. Second operand 12 states and 128 transitions. [2024-06-20 15:48:57,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 51 transitions, 333 flow [2024-06-20 15:48:57,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 51 transitions, 309 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 15:48:57,886 INFO L231 Difference]: Finished difference. Result has 82 places, 35 transitions, 194 flow [2024-06-20 15:48:57,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=194, PETRI_PLACES=82, PETRI_TRANSITIONS=35} [2024-06-20 15:48:57,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-20 15:48:57,886 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 35 transitions, 194 flow [2024-06-20 15:48:57,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:57,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:57,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:57,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-20 15:48:57,886 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:57,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash -500336943, now seen corresponding path program 18 times [2024-06-20 15:48:57,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:57,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719995132] [2024-06-20 15:48:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:57,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:59,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:59,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719995132] [2024-06-20 15:48:59,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719995132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:59,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:59,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:59,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583613007] [2024-06-20 15:48:59,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:59,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:59,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:59,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:59,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:49:00,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:49:00,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 35 transitions, 194 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:00,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:00,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:49:00,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:00,394 INFO L124 PetriNetUnfolderBase]: 62/153 cut-off events. [2024-06-20 15:49:00,394 INFO L125 PetriNetUnfolderBase]: For 2578/2578 co-relation queries the response was YES. [2024-06-20 15:49:00,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 153 events. 62/153 cut-off events. For 2578/2578 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 454 event pairs, 17 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 536. Up to 91 conditions per place. [2024-06-20 15:49:00,395 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 23 selfloop transitions, 4 changer transitions 18/48 dead transitions. [2024-06-20 15:49:00,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 48 transitions, 314 flow [2024-06-20 15:49:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:49:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:49:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-20 15:49:00,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-20 15:49:00,396 INFO L175 Difference]: Start difference. First operand has 82 places, 35 transitions, 194 flow. Second operand 12 states and 124 transitions. [2024-06-20 15:49:00,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 48 transitions, 314 flow [2024-06-20 15:49:00,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 48 transitions, 286 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:49:00,399 INFO L231 Difference]: Finished difference. Result has 78 places, 28 transitions, 144 flow [2024-06-20 15:49:00,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=144, PETRI_PLACES=78, PETRI_TRANSITIONS=28} [2024-06-20 15:49:00,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-20 15:49:00,399 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 28 transitions, 144 flow [2024-06-20 15:49:00,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:00,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:00,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:00,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-20 15:49:00,399 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:49:00,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1364889247, now seen corresponding path program 19 times [2024-06-20 15:49:00,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:00,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470197728] [2024-06-20 15:49:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:00,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:01,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:01,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470197728] [2024-06-20 15:49:01,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470197728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:01,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:01,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:49:01,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377619447] [2024-06-20 15:49:01,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:01,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:49:01,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:01,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:49:01,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:49:02,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:49:02,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 28 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:02,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:02,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:49:02,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:02,218 INFO L124 PetriNetUnfolderBase]: 51/126 cut-off events. [2024-06-20 15:49:02,219 INFO L125 PetriNetUnfolderBase]: For 2088/2088 co-relation queries the response was YES. [2024-06-20 15:49:02,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 126 events. 51/126 cut-off events. For 2088/2088 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 329 event pairs, 15 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 434. Up to 52 conditions per place. [2024-06-20 15:49:02,219 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 17 selfloop transitions, 6 changer transitions 16/42 dead transitions. [2024-06-20 15:49:02,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 42 transitions, 254 flow [2024-06-20 15:49:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:49:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:49:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-20 15:49:02,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-20 15:49:02,220 INFO L175 Difference]: Start difference. First operand has 78 places, 28 transitions, 144 flow. Second operand 12 states and 123 transitions. [2024-06-20 15:49:02,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 42 transitions, 254 flow [2024-06-20 15:49:02,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 42 transitions, 232 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-20 15:49:02,222 INFO L231 Difference]: Finished difference. Result has 65 places, 22 transitions, 112 flow [2024-06-20 15:49:02,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=112, PETRI_PLACES=65, PETRI_TRANSITIONS=22} [2024-06-20 15:49:02,222 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-20 15:49:02,222 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 22 transitions, 112 flow [2024-06-20 15:49:02,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:02,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:02,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:02,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-20 15:49:02,222 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:49:02,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:02,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2012760183, now seen corresponding path program 20 times [2024-06-20 15:49:02,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:02,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055498000] [2024-06-20 15:49:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:04,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055498000] [2024-06-20 15:49:04,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055498000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:04,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:04,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:49:04,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202868226] [2024-06-20 15:49:04,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:04,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:49:04,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:04,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:49:04,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:49:05,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 15:49:05,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 22 transitions, 112 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:05,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:05,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 15:49:05,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:05,354 INFO L124 PetriNetUnfolderBase]: 23/64 cut-off events. [2024-06-20 15:49:05,354 INFO L125 PetriNetUnfolderBase]: For 684/684 co-relation queries the response was YES. [2024-06-20 15:49:05,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 64 events. 23/64 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 166. Up to 24 conditions per place. [2024-06-20 15:49:05,354 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-20 15:49:05,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 31 transitions, 156 flow [2024-06-20 15:49:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:49:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:49:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-20 15:49:05,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-20 15:49:05,356 INFO L175 Difference]: Start difference. First operand has 65 places, 22 transitions, 112 flow. Second operand 12 states and 113 transitions. [2024-06-20 15:49:05,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 31 transitions, 156 flow [2024-06-20 15:49:05,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 31 transitions, 124 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-20 15:49:05,356 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-20 15:49:05,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-20 15:49:05,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-20 15:49:05,357 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-20 15:49:05,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:05,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 15:49:05,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 15:49:05,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 15:49:05,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 15:49:05,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-20 15:49:05,360 INFO L445 BasicCegarLoop]: Path program histogram: [35, 33, 27, 20, 20, 17, 16, 10, 9, 6, 6, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:05,362 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 15:49:05,362 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 15:49:05,367 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 15:49:05,367 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 15:49:05,367 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 03:49:05 BasicIcfg [2024-06-20 15:49:05,367 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 15:49:05,368 INFO L158 Benchmark]: Toolchain (without parser) took 520978.23ms. Allocated memory was 151.0MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 86.7MB in the beginning and 973.5MB in the end (delta: -886.8MB). Peak memory consumption was 357.9MB. Max. memory is 16.1GB. [2024-06-20 15:49:05,370 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory was 110.5MB in the beginning and 110.3MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:49:05,370 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:49:05,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 628.61ms. Allocated memory was 151.0MB in the beginning and 209.7MB in the end (delta: 58.7MB). Free memory was 86.4MB in the beginning and 170.6MB in the end (delta: -84.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-20 15:49:05,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.57ms. Allocated memory is still 209.7MB. Free memory was 170.6MB in the beginning and 167.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 15:49:05,371 INFO L158 Benchmark]: Boogie Preprocessor took 59.35ms. Allocated memory is still 209.7MB. Free memory was 167.5MB in the beginning and 164.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 15:49:05,371 INFO L158 Benchmark]: RCFGBuilder took 709.96ms. Allocated memory is still 209.7MB. Free memory was 164.3MB in the beginning and 104.5MB in the end (delta: 59.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-20 15:49:05,371 INFO L158 Benchmark]: TraceAbstraction took 519524.63ms. Allocated memory was 209.7MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 104.5MB in the beginning and 973.5MB in the end (delta: -869.0MB). Peak memory consumption was 315.9MB. Max. memory is 16.1GB. [2024-06-20 15:49:05,372 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory was 110.5MB in the beginning and 110.3MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 628.61ms. Allocated memory was 151.0MB in the beginning and 209.7MB in the end (delta: 58.7MB). Free memory was 86.4MB in the beginning and 170.6MB in the end (delta: -84.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.57ms. Allocated memory is still 209.7MB. Free memory was 170.6MB in the beginning and 167.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.35ms. Allocated memory is still 209.7MB. Free memory was 167.5MB in the beginning and 164.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 709.96ms. Allocated memory is still 209.7MB. Free memory was 164.3MB in the beginning and 104.5MB in the end (delta: 59.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 519524.63ms. Allocated memory was 209.7MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 104.5MB in the beginning and 973.5MB in the end (delta: -869.0MB). Peak memory consumption was 315.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: 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, 50 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: 519.4s, OverallIterations: 231, TraceHistogramMax: 1, PathProgramHistogramMax: 35, EmptinessCheckTime: 0.0s, AutomataDifference: 186.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15755 SdHoareTripleChecker+Valid, 68.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13386 mSDsluCounter, 9155 SdHoareTripleChecker+Invalid, 59.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8277 mSDsCounter, 2703 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107543 IncrementalHoareTripleChecker+Invalid, 110246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2703 mSolverCounterUnsat, 878 mSDtfsCounter, 107543 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2749 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2738 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6075 ImplicationChecksByTransitivity, 93.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3675occurred in iteration=122, InterpolantAutomatonStates: 2395, 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: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 328.8s InterpolantComputationTime, 3838 NumberOfCodeBlocks, 3838 NumberOfCodeBlocksAsserted, 231 NumberOfCheckSat, 3607 ConstructedInterpolants, 0 QuantifiedInterpolants, 200558 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 231 InterpolantComputations, 231 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! [2024-06-20 15:49:05,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE