./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c --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/mutex-meet/test-easy6.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/test-easy6.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 16:28:53,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 16:28:53,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 16:28:53,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 16:28:53,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 16:28:53,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 16:28:53,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 16:28:53,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 16:28:53,653 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 16:28:53,653 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 16:28:53,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 16:28:53,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 16:28:53,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 16:28:53,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 16:28:53,655 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 16:28:53,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 16:28:53,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 16:28:53,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 16:28:53,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 16:28:53,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 16:28:53,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 16:28:53,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 16:28:53,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 16:28:53,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 16:28:53,661 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 16:28:53,661 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 16:28:53,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 16:28:53,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 16:28:53,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 16:28:53,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 16:28:53,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 16:28:53,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 16:28:53,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:28:53,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 16:28:53,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 16:28:53,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 16:28:53,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 16:28:53,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 16:28:53,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 16:28:53,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 16:28:53,664 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 16:28:53,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 16:28:53,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 16:28:53,665 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 16:28:53,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 16:28:53,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 16:28:53,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 16:28:53,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 16:28:53,968 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 16:28:53,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-06-04 16:28:55,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 16:28:55,306 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 16:28:55,307 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-06-04 16:28:55,317 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1a93c17e/9c2402469d0f4bbe8313de4cdb8198a9/FLAG3d356586c [2024-06-04 16:28:55,334 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1a93c17e/9c2402469d0f4bbe8313de4cdb8198a9 [2024-06-04 16:28:55,337 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 16:28:55,338 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 16:28:55,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/test-easy6.wvr.yml/witness.yml [2024-06-04 16:28:55,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 16:28:55,467 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 16:28:55,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 16:28:55,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 16:28:55,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 16:28:55,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:28:55" (1/2) ... [2024-06-04 16:28:55,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d754359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:55, skipping insertion in model container [2024-06-04 16:28:55,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:28:55" (1/2) ... [2024-06-04 16:28:55,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@758c0d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:55, skipping insertion in model container [2024-06-04 16:28:55,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:55" (2/2) ... [2024-06-04 16:28:55,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d754359 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55, skipping insertion in model container [2024-06-04 16:28:55,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:55" (2/2) ... [2024-06-04 16:28:55,477 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 16:28:55,496 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 16:28:55,497 INFO L97 edCorrectnessWitness]: Location invariant before [L112-L112] ((((((((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= n2)) && (! multithreaded || 0 <= tmp2)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )e1) + (long long )e2 >= 0LL && (1LL - (long long )e1) + (long long )n1 >= 0LL) && (1LL - (long long )e1) + (long long )n2 >= 0LL) && (1LL - (long long )e1) + (long long )tmp1 >= 0LL) && (1LL - (long long )e1) + (long long )tmp2 >= 0LL) && (1LL - (long long )e1) + (long long )i >= 0LL) && (1LL - (long long )e1) + (long long )i1 >= 0LL) && (1LL - (long long )e1) + (long long )i2 >= 0LL) && (long long )e1 + (long long )e2 >= 0LL) && (long long )e1 + (long long )n1 >= 0LL) && (long long )e1 + (long long )n2 >= 0LL) && (long long )e1 + (long long )tmp1 >= 0LL) && (long long )e1 + (long long )tmp2 >= 0LL) && (long long )e1 + (long long )i >= 0LL) && (long long )e1 + (long long )i1 >= 0LL) && (long long )e1 + (long long )i2 >= 0LL) && (long long )e2 + (long long )n1 >= 0LL) && (long long )e2 + (long long )n2 >= 0LL) && (long long )e2 + (long long )tmp1 >= 0LL) && (long long )e2 + (long long )tmp2 >= 0LL) && (long long )e2 + (long long )i >= 0LL) && (long long )e2 + (long long )i1 >= 0LL) && (long long )e2 + (long long )i2 >= 0LL) && (long long )n1 + (long long )n2 >= 0LL) && (long long )n1 + (long long )tmp1 >= 0LL) && (long long )n1 + (long long )tmp2 >= 0LL) && (long long )n2 + (long long )tmp1 >= 0LL) && (long long )n2 + (long long )tmp2 >= 0LL) && (long long )tmp1 + (long long )tmp2 >= 0LL) && (long long )i + (long long )n1 >= 0LL) && (long long )i + (long long )n2 >= 0LL) && (long long )i + (long long )tmp1 >= 0LL) && (long long )i + (long long )tmp2 >= 0LL) && (long long )i + (long long )i1 >= 0LL) && (long long )i + (long long )i2 >= 0LL) && (long long )i1 + (long long )n1 >= 0LL) && (long long )i1 + (long long )n2 >= 0LL) && (long long )i1 + (long long )tmp1 >= 0LL) && (long long )i1 + (long long )tmp2 >= 0LL) && (long long )i1 + (long long )i2 >= 0LL) && (long long )i2 + (long long )n1 >= 0LL) && (long long )i2 + (long long )n2 >= 0LL) && (long long )i2 + (long long )tmp1 >= 0LL) && (long long )i2 + (long long )tmp2 >= 0LL))) && (! multithreaded || 0 <= i)) && (! multithreaded || 0 <= n1)) && (! multithreaded || 0 <= i1)) && (! multithreaded || ((((((0 <= n1 && 0 <= n2) && 0 <= tmp1) && 0 <= tmp2) && 0 <= i) && 0 <= i1) && 0 <= i2))) && (! multithreaded || 0 <= tmp1) [2024-06-04 16:28:55,497 INFO L97 edCorrectnessWitness]: Location invariant before [L111-L111] ((((((((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= n2)) && (! multithreaded || 0 <= tmp2)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )e1) + (long long )e2 >= 0LL && (1LL - (long long )e1) + (long long )n1 >= 0LL) && (1LL - (long long )e1) + (long long )n2 >= 0LL) && (1LL - (long long )e1) + (long long )tmp1 >= 0LL) && (1LL - (long long )e1) + (long long )tmp2 >= 0LL) && (1LL - (long long )e1) + (long long )i >= 0LL) && (1LL - (long long )e1) + (long long )i1 >= 0LL) && (1LL - (long long )e1) + (long long )i2 >= 0LL) && (long long )e1 + (long long )e2 >= 0LL) && (long long )e1 + (long long )n1 >= 0LL) && (long long )e1 + (long long )n2 >= 0LL) && (long long )e1 + (long long )tmp1 >= 0LL) && (long long )e1 + (long long )tmp2 >= 0LL) && (long long )e1 + (long long )i >= 0LL) && (long long )e1 + (long long )i1 >= 0LL) && (long long )e1 + (long long )i2 >= 0LL) && (long long )e2 + (long long )n1 >= 0LL) && (long long )e2 + (long long )n2 >= 0LL) && (long long )e2 + (long long )tmp1 >= 0LL) && (long long )e2 + (long long )tmp2 >= 0LL) && (long long )e2 + (long long )i >= 0LL) && (long long )e2 + (long long )i1 >= 0LL) && (long long )e2 + (long long )i2 >= 0LL) && (long long )n1 + (long long )n2 >= 0LL) && (long long )n1 + (long long )tmp1 >= 0LL) && (long long )n1 + (long long )tmp2 >= 0LL) && (long long )n2 + (long long )tmp1 >= 0LL) && (long long )n2 + (long long )tmp2 >= 0LL) && (long long )tmp1 + (long long )tmp2 >= 0LL) && (long long )i + (long long )n1 >= 0LL) && (long long )i + (long long )n2 >= 0LL) && (long long )i + (long long )tmp1 >= 0LL) && (long long )i + (long long )tmp2 >= 0LL) && (long long )i + (long long )i1 >= 0LL) && (long long )i + (long long )i2 >= 0LL) && (long long )i1 + (long long )n1 >= 0LL) && (long long )i1 + (long long )n2 >= 0LL) && (long long )i1 + (long long )tmp1 >= 0LL) && (long long )i1 + (long long )tmp2 >= 0LL) && (long long )i1 + (long long )i2 >= 0LL) && (long long )i2 + (long long )n1 >= 0LL) && (long long )i2 + (long long )n2 >= 0LL) && (long long )i2 + (long long )tmp1 >= 0LL) && (long long )i2 + (long long )tmp2 >= 0LL))) && (! multithreaded || 0 <= i)) && (! multithreaded || 0 <= n1)) && (! multithreaded || 0 <= i1)) && (! multithreaded || ((((((0 <= n1 && 0 <= n2) && 0 <= tmp1) && 0 <= tmp2) && 0 <= i) && 0 <= i1) && 0 <= i2))) && (! multithreaded || 0 <= tmp1) [2024-06-04 16:28:55,497 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 16:28:55,498 INFO L106 edCorrectnessWitness]: ghost_update [L110-L110] multithreaded = 1; [2024-06-04 16:28:55,524 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 16:28:55,689 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:28:55,698 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 16:28:55,802 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:28:55,819 INFO L206 MainTranslator]: Completed translation [2024-06-04 16:28:55,820 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55 WrapperNode [2024-06-04 16:28:55,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 16:28:55,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 16:28:55,822 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 16:28:55,822 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 16:28:55,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,901 INFO L138 Inliner]: procedures = 20, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2024-06-04 16:28:55,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 16:28:55,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 16:28:55,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 16:28:55,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 16:28:55,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,952 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 16:28:55,953 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,982 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 16:28:55,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 16:28:55,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 16:28:55,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 16:28:55,991 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (1/1) ... [2024-06-04 16:28:55,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:28:56,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:56,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 16:28:56,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 16:28:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 16:28:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-04 16:28:56,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-04 16:28:56,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-04 16:28:56,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-04 16:28:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 16:28:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 16:28:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 16:28:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 16:28:56,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 16:28:56,087 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 16:28:56,196 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 16:28:56,198 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 16:28:56,548 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 16:28:56,548 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 16:28:56,647 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 16:28:56,647 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 16:28:56,649 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:28:56 BoogieIcfgContainer [2024-06-04 16:28:56,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 16:28:56,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 16:28:56,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 16:28:56,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 16:28:56,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 04:28:55" (1/4) ... [2024-06-04 16:28:56,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e74b4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:28:56, skipping insertion in model container [2024-06-04 16:28:56,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:55" (2/4) ... [2024-06-04 16:28:56,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e74b4b7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:28:56, skipping insertion in model container [2024-06-04 16:28:56,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:55" (3/4) ... [2024-06-04 16:28:56,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e74b4b7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:28:56, skipping insertion in model container [2024-06-04 16:28:56,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:28:56" (4/4) ... [2024-06-04 16:28:56,658 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2024-06-04 16:28:56,674 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 16:28:56,674 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 16:28:56,675 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 16:28:56,729 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-04 16:28:56,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 38 transitions, 90 flow [2024-06-04 16:28:56,823 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2024-06-04 16:28:56,836 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-04 16:28:56,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 0/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-04 16:28:56,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 38 transitions, 90 flow [2024-06-04 16:28:56,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 32 transitions, 70 flow [2024-06-04 16:28:56,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 16:28:56,878 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;@30ffd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 16:28:56,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 16:28:56,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 16:28:56,886 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 16:28:56,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:28:56,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:56,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 16:28:56,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:28:56,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash -867461194, now seen corresponding path program 1 times [2024-06-04 16:28:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:56,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355977398] [2024-06-04 16:28:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:56,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:57,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355977398] [2024-06-04 16:28:57,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355977398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:57,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:57,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 16:28:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7476514] [2024-06-04 16:28:57,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:57,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:28:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:57,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:28:57,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:28:57,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-04 16:28:57,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:28:57,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:57,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-04 16:28:57,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:58,043 INFO L124 PetriNetUnfolderBase]: 183/422 cut-off events. [2024-06-04 16:28:58,047 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-04 16:28:58,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 422 events. 183/422 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2008 event pairs, 77 based on Foata normal form. 3/406 useless extension candidates. Maximal degree in co-relation 764. Up to 321 conditions per place. [2024-06-04 16:28:58,056 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 26 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-06-04 16:28:58,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 147 flow [2024-06-04 16:28:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:28:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:28:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-04 16:28:58,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-06-04 16:28:58,068 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 70 flow. Second operand 3 states and 73 transitions. [2024-06-04 16:28:58,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 147 flow [2024-06-04 16:28:58,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:28:58,073 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 89 flow [2024-06-04 16:28:58,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-06-04 16:28:58,078 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-06-04 16:28:58,078 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 89 flow [2024-06-04 16:28:58,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:28:58,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:58,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:58,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 16:28:58,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:28:58,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash -406528075, now seen corresponding path program 1 times [2024-06-04 16:28:58,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:58,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125140199] [2024-06-04 16:28:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:58,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:58,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125140199] [2024-06-04 16:28:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125140199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:58,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:58,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 16:28:58,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070406096] [2024-06-04 16:28:58,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:58,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 16:28:58,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 16:28:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 16:28:58,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-04 16:28:58,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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) [2024-06-04 16:28:58,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:58,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-04 16:28:58,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:58,799 INFO L124 PetriNetUnfolderBase]: 200/442 cut-off events. [2024-06-04 16:28:58,800 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-04 16:28:58,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 442 events. 200/442 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1981 event pairs, 116 based on Foata normal form. 5/436 useless extension candidates. Maximal degree in co-relation 915. Up to 336 conditions per place. [2024-06-04 16:28:58,807 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 32 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-06-04 16:28:58,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 195 flow [2024-06-04 16:28:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:28:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:28:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-04 16:28:58,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-04 16:28:58,811 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 89 flow. Second operand 4 states and 92 transitions. [2024-06-04 16:28:58,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 195 flow [2024-06-04 16:28:58,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:28:58,815 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 115 flow [2024-06-04 16:28:58,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-04 16:28:58,816 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-06-04 16:28:58,817 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 115 flow [2024-06-04 16:28:58,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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) [2024-06-04 16:28:58,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:58,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:58,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 16:28:58,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:28:58,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 282532372, now seen corresponding path program 1 times [2024-06-04 16:28:58,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:58,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722449096] [2024-06-04 16:28:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:58,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:59,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:59,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722449096] [2024-06-04 16:28:59,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722449096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:59,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:59,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:28:59,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343231956] [2024-06-04 16:28:59,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:59,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:28:59,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:28:59,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:28:59,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-04 16:28:59,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2024-06-04 16:28:59,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:59,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-04 16:28:59,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:59,365 INFO L124 PetriNetUnfolderBase]: 191/423 cut-off events. [2024-06-04 16:28:59,365 INFO L125 PetriNetUnfolderBase]: For 195/215 co-relation queries the response was YES. [2024-06-04 16:28:59,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 423 events. 191/423 cut-off events. For 195/215 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1900 event pairs, 99 based on Foata normal form. 6/418 useless extension candidates. Maximal degree in co-relation 988. Up to 306 conditions per place. [2024-06-04 16:28:59,369 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 37 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-04 16:28:59,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 251 flow [2024-06-04 16:28:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:28:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:28:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-04 16:28:59,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5894736842105263 [2024-06-04 16:28:59,374 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 115 flow. Second operand 5 states and 112 transitions. [2024-06-04 16:28:59,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 251 flow [2024-06-04 16:28:59,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 16:28:59,378 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 141 flow [2024-06-04 16:28:59,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-04 16:28:59,379 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-06-04 16:28:59,379 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 141 flow [2024-06-04 16:28:59,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2024-06-04 16:28:59,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:59,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:59,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 16:28:59,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:28:59,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash 168569780, now seen corresponding path program 1 times [2024-06-04 16:28:59,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:59,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482121573] [2024-06-04 16:28:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:59,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:59,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:59,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482121573] [2024-06-04 16:28:59,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482121573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:59,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:59,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:28:59,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246571945] [2024-06-04 16:28:59,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:59,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:28:59,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:59,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:28:59,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:28:59,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-04 16:28:59,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:28:59,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:59,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-04 16:28:59,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:00,082 INFO L124 PetriNetUnfolderBase]: 301/645 cut-off events. [2024-06-04 16:29:00,083 INFO L125 PetriNetUnfolderBase]: For 603/605 co-relation queries the response was YES. [2024-06-04 16:29:00,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 645 events. 301/645 cut-off events. For 603/605 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3112 event pairs, 92 based on Foata normal form. 5/639 useless extension candidates. Maximal degree in co-relation 1644. Up to 406 conditions per place. [2024-06-04 16:29:00,087 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 52 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-04 16:29:00,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 373 flow [2024-06-04 16:29:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:29:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:29:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-04 16:29:00,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-06-04 16:29:00,089 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 141 flow. Second operand 6 states and 125 transitions. [2024-06-04 16:29:00,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 373 flow [2024-06-04 16:29:00,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 354 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 16:29:00,092 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 218 flow [2024-06-04 16:29:00,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-06-04 16:29:00,093 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-06-04 16:29:00,093 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 218 flow [2024-06-04 16:29:00,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:00,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:00,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:00,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 16:29:00,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:00,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash 500429267, now seen corresponding path program 1 times [2024-06-04 16:29:00,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:00,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848931537] [2024-06-04 16:29:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:00,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:00,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848931537] [2024-06-04 16:29:00,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848931537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:00,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:00,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:29:00,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696842424] [2024-06-04 16:29:00,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:00,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:29:00,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:29:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:29:00,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-04 16:29:00,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-06-04 16:29:00,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:00,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-04 16:29:00,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:00,690 INFO L124 PetriNetUnfolderBase]: 301/629 cut-off events. [2024-06-04 16:29:00,691 INFO L125 PetriNetUnfolderBase]: For 1134/1153 co-relation queries the response was YES. [2024-06-04 16:29:00,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 629 events. 301/629 cut-off events. For 1134/1153 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2982 event pairs, 111 based on Foata normal form. 32/649 useless extension candidates. Maximal degree in co-relation 1845. Up to 401 conditions per place. [2024-06-04 16:29:00,695 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 49 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-04 16:29:00,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 67 transitions, 399 flow [2024-06-04 16:29:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:29:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:29:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-04 16:29:00,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2024-06-04 16:29:00,697 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 218 flow. Second operand 5 states and 106 transitions. [2024-06-04 16:29:00,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 67 transitions, 399 flow [2024-06-04 16:29:00,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-04 16:29:00,701 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 277 flow [2024-06-04 16:29:00,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=277, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-04 16:29:00,702 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2024-06-04 16:29:00,702 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 277 flow [2024-06-04 16:29:00,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-06-04 16:29:00,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:00,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:00,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 16:29:00,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:00,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1738001748, now seen corresponding path program 1 times [2024-06-04 16:29:00,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:00,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342778571] [2024-06-04 16:29:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:00,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:01,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:01,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342778571] [2024-06-04 16:29:01,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342778571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:01,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:01,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:29:01,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636797595] [2024-06-04 16:29:01,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:01,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:29:01,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:01,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:29:01,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:29:01,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-04 16:29:01,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 277 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-04 16:29:01,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:01,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-04 16:29:01,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:01,533 INFO L124 PetriNetUnfolderBase]: 365/740 cut-off events. [2024-06-04 16:29:01,533 INFO L125 PetriNetUnfolderBase]: For 1769/1810 co-relation queries the response was YES. [2024-06-04 16:29:01,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2422 conditions, 740 events. 365/740 cut-off events. For 1769/1810 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3644 event pairs, 114 based on Foata normal form. 21/743 useless extension candidates. Maximal degree in co-relation 2396. Up to 396 conditions per place. [2024-06-04 16:29:01,540 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 58 selfloop transitions, 14 changer transitions 0/79 dead transitions. [2024-06-04 16:29:01,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 533 flow [2024-06-04 16:29:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:29:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:29:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-04 16:29:01,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-06-04 16:29:01,542 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 277 flow. Second operand 6 states and 123 transitions. [2024-06-04 16:29:01,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 533 flow [2024-06-04 16:29:01,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 519 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:01,547 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 343 flow [2024-06-04 16:29:01,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-04 16:29:01,550 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2024-06-04 16:29:01,551 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 343 flow [2024-06-04 16:29:01,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-04 16:29:01,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:01,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:01,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 16:29:01,551 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:01,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash -967370116, now seen corresponding path program 1 times [2024-06-04 16:29:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:01,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853309083] [2024-06-04 16:29:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:02,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:02,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853309083] [2024-06-04 16:29:02,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853309083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:02,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:02,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:29:02,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520907140] [2024-06-04 16:29:02,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:02,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:29:02,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:02,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:29:02,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:29:02,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-04 16:29:02,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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) [2024-06-04 16:29:02,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:02,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-04 16:29:02,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:02,571 INFO L124 PetriNetUnfolderBase]: 452/887 cut-off events. [2024-06-04 16:29:02,571 INFO L125 PetriNetUnfolderBase]: For 2707/2721 co-relation queries the response was YES. [2024-06-04 16:29:02,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 887 events. 452/887 cut-off events. For 2707/2721 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4397 event pairs, 162 based on Foata normal form. 22/898 useless extension candidates. Maximal degree in co-relation 2977. Up to 687 conditions per place. [2024-06-04 16:29:02,577 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 62 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2024-06-04 16:29:02,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 607 flow [2024-06-04 16:29:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:29:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:29:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-04 16:29:02,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-04 16:29:02,579 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 343 flow. Second operand 7 states and 119 transitions. [2024-06-04 16:29:02,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 607 flow [2024-06-04 16:29:02,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 594 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:02,585 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 449 flow [2024-06-04 16:29:02,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-04 16:29:02,586 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2024-06-04 16:29:02,586 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 449 flow [2024-06-04 16:29:02,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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) [2024-06-04 16:29:02,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:02,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:02,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 16:29:02,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:02,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2009164885, now seen corresponding path program 1 times [2024-06-04 16:29:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:02,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782076969] [2024-06-04 16:29:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:02,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:03,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:03,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782076969] [2024-06-04 16:29:03,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782076969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:03,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:03,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:03,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923058329] [2024-06-04 16:29:03,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:03,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:29:03,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:29:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:29:03,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-04 16:29:03,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 449 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:03,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:03,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-04 16:29:03,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:03,418 INFO L124 PetriNetUnfolderBase]: 494/961 cut-off events. [2024-06-04 16:29:03,418 INFO L125 PetriNetUnfolderBase]: For 3937/3944 co-relation queries the response was YES. [2024-06-04 16:29:03,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 961 events. 494/961 cut-off events. For 3937/3944 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4755 event pairs, 154 based on Foata normal form. 12/966 useless extension candidates. Maximal degree in co-relation 3528. Up to 748 conditions per place. [2024-06-04 16:29:03,424 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 68 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2024-06-04 16:29:03,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 91 transitions, 714 flow [2024-06-04 16:29:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:29:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:29:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-04 16:29:03,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2024-06-04 16:29:03,426 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 449 flow. Second operand 7 states and 124 transitions. [2024-06-04 16:29:03,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 91 transitions, 714 flow [2024-06-04 16:29:03,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 91 transitions, 696 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-06-04 16:29:03,432 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 527 flow [2024-06-04 16:29:03,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-06-04 16:29:03,433 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 42 predicate places. [2024-06-04 16:29:03,433 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 527 flow [2024-06-04 16:29:03,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:03,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:03,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:03,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 16:29:03,434 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:03,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1525385944, now seen corresponding path program 2 times [2024-06-04 16:29:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:03,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890566446] [2024-06-04 16:29:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:04,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:04,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890566446] [2024-06-04 16:29:04,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890566446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:04,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:04,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:29:04,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084146627] [2024-06-04 16:29:04,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:04,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:29:04,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:04,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:29:04,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:29:04,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-04 16:29:04,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 527 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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) [2024-06-04 16:29:04,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:04,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-04 16:29:04,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:04,331 INFO L124 PetriNetUnfolderBase]: 441/888 cut-off events. [2024-06-04 16:29:04,331 INFO L125 PetriNetUnfolderBase]: For 3703/3727 co-relation queries the response was YES. [2024-06-04 16:29:04,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3306 conditions, 888 events. 441/888 cut-off events. For 3703/3727 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4455 event pairs, 126 based on Foata normal form. 19/888 useless extension candidates. Maximal degree in co-relation 3263. Up to 577 conditions per place. [2024-06-04 16:29:04,339 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 68 selfloop transitions, 20 changer transitions 0/96 dead transitions. [2024-06-04 16:29:04,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 817 flow [2024-06-04 16:29:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:29:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:29:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-04 16:29:04,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-06-04 16:29:04,341 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 527 flow. Second operand 8 states and 139 transitions. [2024-06-04 16:29:04,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 817 flow [2024-06-04 16:29:04,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 96 transitions, 789 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:04,350 INFO L231 Difference]: Finished difference. Result has 87 places, 71 transitions, 575 flow [2024-06-04 16:29:04,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=575, PETRI_PLACES=87, PETRI_TRANSITIONS=71} [2024-06-04 16:29:04,352 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2024-06-04 16:29:04,352 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 71 transitions, 575 flow [2024-06-04 16:29:04,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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) [2024-06-04 16:29:04,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:04,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:04,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 16:29:04,353 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:04,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:04,354 INFO L85 PathProgramCache]: Analyzing trace with hash -280116719, now seen corresponding path program 1 times [2024-06-04 16:29:04,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:04,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732301958] [2024-06-04 16:29:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:04,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:04,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732301958] [2024-06-04 16:29:04,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732301958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:04,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:04,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:04,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844072498] [2024-06-04 16:29:04,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:04,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:29:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:29:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:29:05,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:05,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:05,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:05,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:05,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:05,254 INFO L124 PetriNetUnfolderBase]: 514/981 cut-off events. [2024-06-04 16:29:05,254 INFO L125 PetriNetUnfolderBase]: For 4714/4731 co-relation queries the response was YES. [2024-06-04 16:29:05,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 981 events. 514/981 cut-off events. For 4714/4731 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4754 event pairs, 179 based on Foata normal form. 5/980 useless extension candidates. Maximal degree in co-relation 3760. Up to 823 conditions per place. [2024-06-04 16:29:05,262 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 67 selfloop transitions, 19 changer transitions 0/95 dead transitions. [2024-06-04 16:29:05,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 95 transitions, 859 flow [2024-06-04 16:29:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:29:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:29:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-04 16:29:05,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2024-06-04 16:29:05,264 INFO L175 Difference]: Start difference. First operand has 87 places, 71 transitions, 575 flow. Second operand 8 states and 122 transitions. [2024-06-04 16:29:05,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 95 transitions, 859 flow [2024-06-04 16:29:05,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 95 transitions, 810 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 16:29:05,277 INFO L231 Difference]: Finished difference. Result has 91 places, 79 transitions, 626 flow [2024-06-04 16:29:05,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=626, PETRI_PLACES=91, PETRI_TRANSITIONS=79} [2024-06-04 16:29:05,278 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 52 predicate places. [2024-06-04 16:29:05,280 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 79 transitions, 626 flow [2024-06-04 16:29:05,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:05,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:05,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:05,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 16:29:05,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:05,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash -156021234, now seen corresponding path program 1 times [2024-06-04 16:29:05,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:05,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159169065] [2024-06-04 16:29:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:05,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:05,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159169065] [2024-06-04 16:29:05,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159169065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:05,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:05,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:29:05,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226154126] [2024-06-04 16:29:05,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:05,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:29:05,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:05,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:29:05,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:29:05,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-04 16:29:05,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 626 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:05,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:05,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-04 16:29:05,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:05,913 INFO L124 PetriNetUnfolderBase]: 529/1008 cut-off events. [2024-06-04 16:29:05,914 INFO L125 PetriNetUnfolderBase]: For 5314/5331 co-relation queries the response was YES. [2024-06-04 16:29:05,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4061 conditions, 1008 events. 529/1008 cut-off events. For 5314/5331 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4896 event pairs, 190 based on Foata normal form. 5/1007 useless extension candidates. Maximal degree in co-relation 4015. Up to 867 conditions per place. [2024-06-04 16:29:05,922 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 75 selfloop transitions, 17 changer transitions 0/101 dead transitions. [2024-06-04 16:29:05,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 101 transitions, 948 flow [2024-06-04 16:29:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:29:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:29:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-04 16:29:05,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2024-06-04 16:29:05,924 INFO L175 Difference]: Start difference. First operand has 91 places, 79 transitions, 626 flow. Second operand 6 states and 107 transitions. [2024-06-04 16:29:05,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 101 transitions, 948 flow [2024-06-04 16:29:05,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 101 transitions, 929 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:05,936 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 744 flow [2024-06-04 16:29:05,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-06-04 16:29:05,937 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 58 predicate places. [2024-06-04 16:29:05,937 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 744 flow [2024-06-04 16:29:05,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:05,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:05,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:05,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 16:29:05,938 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:05,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1817954492, now seen corresponding path program 2 times [2024-06-04 16:29:05,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132108246] [2024-06-04 16:29:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:05,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:06,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132108246] [2024-06-04 16:29:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132108246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:29:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525706850] [2024-06-04 16:29:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:06,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:29:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:29:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:29:06,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-04 16:29:06,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 744 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:06,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:06,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-04 16:29:06,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:06,575 INFO L124 PetriNetUnfolderBase]: 521/997 cut-off events. [2024-06-04 16:29:06,575 INFO L125 PetriNetUnfolderBase]: For 6007/6024 co-relation queries the response was YES. [2024-06-04 16:29:06,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 997 events. 521/997 cut-off events. For 6007/6024 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4868 event pairs, 195 based on Foata normal form. 6/997 useless extension candidates. Maximal degree in co-relation 4144. Up to 817 conditions per place. [2024-06-04 16:29:06,583 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 22 changer transitions 0/101 dead transitions. [2024-06-04 16:29:06,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 101 transitions, 988 flow [2024-06-04 16:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:29:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:29:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-04 16:29:06,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517543859649123 [2024-06-04 16:29:06,585 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 744 flow. Second operand 6 states and 103 transitions. [2024-06-04 16:29:06,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 101 transitions, 988 flow [2024-06-04 16:29:06,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 101 transitions, 976 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-04 16:29:06,598 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 801 flow [2024-06-04 16:29:06,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=801, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-06-04 16:29:06,600 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 64 predicate places. [2024-06-04 16:29:06,600 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 801 flow [2024-06-04 16:29:06,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:06,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:06,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:06,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 16:29:06,601 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:06,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1817935644, now seen corresponding path program 1 times [2024-06-04 16:29:06,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:06,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020876170] [2024-06-04 16:29:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:06,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:07,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:07,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020876170] [2024-06-04 16:29:07,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020876170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:07,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:07,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:07,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608950836] [2024-06-04 16:29:07,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:07,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:07,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:07,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:07,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:07,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:07,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 801 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:07,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:07,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:07,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:07,476 INFO L124 PetriNetUnfolderBase]: 556/1034 cut-off events. [2024-06-04 16:29:07,477 INFO L125 PetriNetUnfolderBase]: For 6959/6976 co-relation queries the response was YES. [2024-06-04 16:29:07,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4513 conditions, 1034 events. 556/1034 cut-off events. For 6959/6976 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4900 event pairs, 190 based on Foata normal form. 5/1033 useless extension candidates. Maximal degree in co-relation 4460. Up to 898 conditions per place. [2024-06-04 16:29:07,486 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 75 selfloop transitions, 24 changer transitions 0/106 dead transitions. [2024-06-04 16:29:07,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 1057 flow [2024-06-04 16:29:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:29:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:29:07,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-04 16:29:07,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35964912280701755 [2024-06-04 16:29:07,488 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 801 flow. Second operand 9 states and 123 transitions. [2024-06-04 16:29:07,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 1057 flow [2024-06-04 16:29:07,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 1028 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:07,501 INFO L231 Difference]: Finished difference. Result has 110 places, 91 transitions, 824 flow [2024-06-04 16:29:07,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=824, PETRI_PLACES=110, PETRI_TRANSITIONS=91} [2024-06-04 16:29:07,503 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 71 predicate places. [2024-06-04 16:29:07,503 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 91 transitions, 824 flow [2024-06-04 16:29:07,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:07,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:07,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:07,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 16:29:07,504 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:07,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1403594020, now seen corresponding path program 1 times [2024-06-04 16:29:07,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:07,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323697031] [2024-06-04 16:29:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:07,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:07,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323697031] [2024-06-04 16:29:07,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323697031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:07,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:07,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:29:07,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131355394] [2024-06-04 16:29:07,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:07,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:29:07,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:07,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:29:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:29:07,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-06-04 16:29:07,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 91 transitions, 824 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:07,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:07,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-06-04 16:29:07,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:07,653 INFO L124 PetriNetUnfolderBase]: 254/635 cut-off events. [2024-06-04 16:29:07,653 INFO L125 PetriNetUnfolderBase]: For 3540/3579 co-relation queries the response was YES. [2024-06-04 16:29:07,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 635 events. 254/635 cut-off events. For 3540/3579 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3610 event pairs, 154 based on Foata normal form. 20/633 useless extension candidates. Maximal degree in co-relation 2512. Up to 308 conditions per place. [2024-06-04 16:29:07,659 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 19 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-06-04 16:29:07,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 94 transitions, 872 flow [2024-06-04 16:29:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:29:07,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:29:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-04 16:29:07,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2024-06-04 16:29:07,661 INFO L175 Difference]: Start difference. First operand has 110 places, 91 transitions, 824 flow. Second operand 3 states and 77 transitions. [2024-06-04 16:29:07,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 94 transitions, 872 flow [2024-06-04 16:29:07,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 94 transitions, 842 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 16:29:07,673 INFO L231 Difference]: Finished difference. Result has 109 places, 91 transitions, 802 flow [2024-06-04 16:29:07,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=802, PETRI_PLACES=109, PETRI_TRANSITIONS=91} [2024-06-04 16:29:07,674 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2024-06-04 16:29:07,674 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 91 transitions, 802 flow [2024-06-04 16:29:07,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:07,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:07,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:07,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 16:29:07,676 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:07,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:07,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2133713039, now seen corresponding path program 1 times [2024-06-04 16:29:07,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:07,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311540982] [2024-06-04 16:29:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:07,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:08,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311540982] [2024-06-04 16:29:08,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311540982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:08,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:08,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330216389] [2024-06-04 16:29:08,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:08,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:29:08,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:08,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:29:08,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:29:08,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-04 16:29:08,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 91 transitions, 802 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:08,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:08,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-04 16:29:08,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:08,390 INFO L124 PetriNetUnfolderBase]: 499/966 cut-off events. [2024-06-04 16:29:08,390 INFO L125 PetriNetUnfolderBase]: For 7276/7291 co-relation queries the response was YES. [2024-06-04 16:29:08,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4338 conditions, 966 events. 499/966 cut-off events. For 7276/7291 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4613 event pairs, 171 based on Foata normal form. 5/962 useless extension candidates. Maximal degree in co-relation 4282. Up to 784 conditions per place. [2024-06-04 16:29:08,402 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 80 selfloop transitions, 25 changer transitions 0/114 dead transitions. [2024-06-04 16:29:08,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 114 transitions, 1151 flow [2024-06-04 16:29:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:29:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:29:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-04 16:29:08,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2024-06-04 16:29:08,404 INFO L175 Difference]: Start difference. First operand has 109 places, 91 transitions, 802 flow. Second operand 7 states and 123 transitions. [2024-06-04 16:29:08,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 114 transitions, 1151 flow [2024-06-04 16:29:08,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 114 transitions, 1147 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:08,423 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 926 flow [2024-06-04 16:29:08,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=926, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2024-06-04 16:29:08,425 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2024-06-04 16:29:08,425 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 926 flow [2024-06-04 16:29:08,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:08,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:08,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:08,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 16:29:08,426 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:08,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:08,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1009586495, now seen corresponding path program 2 times [2024-06-04 16:29:08,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:08,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122034747] [2024-06-04 16:29:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:08,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122034747] [2024-06-04 16:29:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122034747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:08,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:08,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:08,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403216912] [2024-06-04 16:29:08,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:08,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:29:08,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:29:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:29:08,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-04 16:29:08,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 926 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:08,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:08,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-04 16:29:08,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:09,115 INFO L124 PetriNetUnfolderBase]: 512/989 cut-off events. [2024-06-04 16:29:09,116 INFO L125 PetriNetUnfolderBase]: For 8537/8552 co-relation queries the response was YES. [2024-06-04 16:29:09,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4689 conditions, 989 events. 512/989 cut-off events. For 8537/8552 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4760 event pairs, 177 based on Foata normal form. 5/985 useless extension candidates. Maximal degree in co-relation 4629. Up to 774 conditions per place. [2024-06-04 16:29:09,129 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 80 selfloop transitions, 29 changer transitions 0/118 dead transitions. [2024-06-04 16:29:09,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 118 transitions, 1276 flow [2024-06-04 16:29:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:29:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:29:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-04 16:29:09,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2024-06-04 16:29:09,131 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 926 flow. Second operand 7 states and 124 transitions. [2024-06-04 16:29:09,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 118 transitions, 1276 flow [2024-06-04 16:29:09,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 118 transitions, 1254 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-04 16:29:09,149 INFO L231 Difference]: Finished difference. Result has 124 places, 104 transitions, 1022 flow [2024-06-04 16:29:09,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1022, PETRI_PLACES=124, PETRI_TRANSITIONS=104} [2024-06-04 16:29:09,150 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2024-06-04 16:29:09,150 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 104 transitions, 1022 flow [2024-06-04 16:29:09,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:09,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:09,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:09,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 16:29:09,151 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:09,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash -522013535, now seen corresponding path program 3 times [2024-06-04 16:29:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:09,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737652087] [2024-06-04 16:29:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:09,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:09,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737652087] [2024-06-04 16:29:09,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737652087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:09,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:09,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:09,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855500000] [2024-06-04 16:29:09,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:09,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:29:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:09,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:29:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:29:09,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-04 16:29:09,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 104 transitions, 1022 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:09,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:09,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-04 16:29:09,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:09,860 INFO L124 PetriNetUnfolderBase]: 506/981 cut-off events. [2024-06-04 16:29:09,860 INFO L125 PetriNetUnfolderBase]: For 9487/9502 co-relation queries the response was YES. [2024-06-04 16:29:09,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 981 events. 506/981 cut-off events. For 9487/9502 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4706 event pairs, 189 based on Foata normal form. 5/977 useless extension candidates. Maximal degree in co-relation 4684. Up to 704 conditions per place. [2024-06-04 16:29:09,871 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 76 selfloop transitions, 33 changer transitions 0/118 dead transitions. [2024-06-04 16:29:09,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 118 transitions, 1324 flow [2024-06-04 16:29:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:29:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:29:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-04 16:29:09,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2024-06-04 16:29:09,872 INFO L175 Difference]: Start difference. First operand has 124 places, 104 transitions, 1022 flow. Second operand 7 states and 118 transitions. [2024-06-04 16:29:09,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 118 transitions, 1324 flow [2024-06-04 16:29:09,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 118 transitions, 1292 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:09,895 INFO L231 Difference]: Finished difference. Result has 129 places, 106 transitions, 1086 flow [2024-06-04 16:29:09,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1086, PETRI_PLACES=129, PETRI_TRANSITIONS=106} [2024-06-04 16:29:09,896 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2024-06-04 16:29:09,897 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 106 transitions, 1086 flow [2024-06-04 16:29:09,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:09,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:09,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:09,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 16:29:09,898 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:09,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2132518337, now seen corresponding path program 1 times [2024-06-04 16:29:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:09,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761738891] [2024-06-04 16:29:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:09,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:09,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:09,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761738891] [2024-06-04 16:29:09,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761738891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:09,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:09,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:29:09,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858703440] [2024-06-04 16:29:09,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:09,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:29:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:09,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:29:09,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:29:09,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-06-04 16:29:09,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 106 transitions, 1086 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:09,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:09,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-06-04 16:29:09,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:10,060 INFO L124 PetriNetUnfolderBase]: 269/673 cut-off events. [2024-06-04 16:29:10,061 INFO L125 PetriNetUnfolderBase]: For 5416/5432 co-relation queries the response was YES. [2024-06-04 16:29:10,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3170 conditions, 673 events. 269/673 cut-off events. For 5416/5432 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3776 event pairs, 133 based on Foata normal form. 8/655 useless extension candidates. Maximal degree in co-relation 3103. Up to 306 conditions per place. [2024-06-04 16:29:10,068 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 22 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2024-06-04 16:29:10,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 112 transitions, 1168 flow [2024-06-04 16:29:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:29:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:29:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-04 16:29:10,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-04 16:29:10,069 INFO L175 Difference]: Start difference. First operand has 129 places, 106 transitions, 1086 flow. Second operand 3 states and 80 transitions. [2024-06-04 16:29:10,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 112 transitions, 1168 flow [2024-06-04 16:29:10,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 112 transitions, 1120 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 16:29:10,089 INFO L231 Difference]: Finished difference. Result has 129 places, 106 transitions, 1073 flow [2024-06-04 16:29:10,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1073, PETRI_PLACES=129, PETRI_TRANSITIONS=106} [2024-06-04 16:29:10,091 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2024-06-04 16:29:10,091 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 106 transitions, 1073 flow [2024-06-04 16:29:10,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:10,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:10,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:10,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 16:29:10,092 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:10,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:10,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1037311157, now seen corresponding path program 2 times [2024-06-04 16:29:10,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:10,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134333435] [2024-06-04 16:29:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:10,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:10,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:10,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134333435] [2024-06-04 16:29:10,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134333435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:10,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:10,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:10,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980519165] [2024-06-04 16:29:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:10,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:10,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:10,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:10,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 106 transitions, 1073 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:10,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:10,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:10,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:10,959 INFO L124 PetriNetUnfolderBase]: 592/1108 cut-off events. [2024-06-04 16:29:10,960 INFO L125 PetriNetUnfolderBase]: For 12877/12892 co-relation queries the response was YES. [2024-06-04 16:29:10,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5689 conditions, 1108 events. 592/1108 cut-off events. For 12877/12892 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5300 event pairs, 152 based on Foata normal form. 5/1105 useless extension candidates. Maximal degree in co-relation 5621. Up to 706 conditions per place. [2024-06-04 16:29:10,969 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 103 selfloop transitions, 40 changer transitions 0/149 dead transitions. [2024-06-04 16:29:10,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 149 transitions, 1659 flow [2024-06-04 16:29:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:29:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:29:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-04 16:29:10,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-04 16:29:10,971 INFO L175 Difference]: Start difference. First operand has 129 places, 106 transitions, 1073 flow. Second operand 10 states and 167 transitions. [2024-06-04 16:29:10,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 149 transitions, 1659 flow [2024-06-04 16:29:10,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 149 transitions, 1629 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:10,996 INFO L231 Difference]: Finished difference. Result has 140 places, 119 transitions, 1289 flow [2024-06-04 16:29:10,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1289, PETRI_PLACES=140, PETRI_TRANSITIONS=119} [2024-06-04 16:29:10,996 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2024-06-04 16:29:10,996 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 119 transitions, 1289 flow [2024-06-04 16:29:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:10,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:10,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:10,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 16:29:10,997 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:10,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:10,998 INFO L85 PathProgramCache]: Analyzing trace with hash 129351577, now seen corresponding path program 3 times [2024-06-04 16:29:10,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:10,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509827448] [2024-06-04 16:29:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:10,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:11,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509827448] [2024-06-04 16:29:11,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509827448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:11,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:11,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:11,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040401969] [2024-06-04 16:29:11,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:11,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:11,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:11,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:11,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:11,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:11,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 119 transitions, 1289 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:11,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:11,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:11,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:11,909 INFO L124 PetriNetUnfolderBase]: 641/1202 cut-off events. [2024-06-04 16:29:11,909 INFO L125 PetriNetUnfolderBase]: For 16710/16733 co-relation queries the response was YES. [2024-06-04 16:29:11,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6607 conditions, 1202 events. 641/1202 cut-off events. For 16710/16733 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5889 event pairs, 161 based on Foata normal form. 5/1201 useless extension candidates. Maximal degree in co-relation 6534. Up to 695 conditions per place. [2024-06-04 16:29:11,920 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 105 selfloop transitions, 49 changer transitions 0/160 dead transitions. [2024-06-04 16:29:11,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 160 transitions, 1921 flow [2024-06-04 16:29:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:29:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:29:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-04 16:29:11,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232456140350877 [2024-06-04 16:29:11,922 INFO L175 Difference]: Start difference. First operand has 140 places, 119 transitions, 1289 flow. Second operand 12 states and 193 transitions. [2024-06-04 16:29:11,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 160 transitions, 1921 flow [2024-06-04 16:29:11,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 160 transitions, 1854 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:11,956 INFO L231 Difference]: Finished difference. Result has 151 places, 126 transitions, 1425 flow [2024-06-04 16:29:11,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1425, PETRI_PLACES=151, PETRI_TRANSITIONS=126} [2024-06-04 16:29:11,956 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 112 predicate places. [2024-06-04 16:29:11,956 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 126 transitions, 1425 flow [2024-06-04 16:29:11,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:11,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:11,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:11,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 16:29:11,957 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:11,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash 483555749, now seen corresponding path program 4 times [2024-06-04 16:29:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:11,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069812731] [2024-06-04 16:29:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:12,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:12,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069812731] [2024-06-04 16:29:12,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069812731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:12,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860486839] [2024-06-04 16:29:12,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:12,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:12,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:12,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 126 transitions, 1425 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:12,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:12,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:12,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:12,866 INFO L124 PetriNetUnfolderBase]: 690/1284 cut-off events. [2024-06-04 16:29:12,866 INFO L125 PetriNetUnfolderBase]: For 20746/20772 co-relation queries the response was YES. [2024-06-04 16:29:12,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7397 conditions, 1284 events. 690/1284 cut-off events. For 20746/20772 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6370 event pairs, 185 based on Foata normal form. 5/1283 useless extension candidates. Maximal degree in co-relation 7320. Up to 664 conditions per place. [2024-06-04 16:29:12,876 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 103 selfloop transitions, 57 changer transitions 0/166 dead transitions. [2024-06-04 16:29:12,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 166 transitions, 2089 flow [2024-06-04 16:29:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:29:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:29:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-04 16:29:12,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42543859649122806 [2024-06-04 16:29:12,877 INFO L175 Difference]: Start difference. First operand has 151 places, 126 transitions, 1425 flow. Second operand 12 states and 194 transitions. [2024-06-04 16:29:12,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 166 transitions, 2089 flow [2024-06-04 16:29:12,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 166 transitions, 2025 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 16:29:12,919 INFO L231 Difference]: Finished difference. Result has 158 places, 133 transitions, 1589 flow [2024-06-04 16:29:12,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1589, PETRI_PLACES=158, PETRI_TRANSITIONS=133} [2024-06-04 16:29:12,920 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 119 predicate places. [2024-06-04 16:29:12,920 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 133 transitions, 1589 flow [2024-06-04 16:29:12,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:12,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:12,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:12,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 16:29:12,921 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:12,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:12,921 INFO L85 PathProgramCache]: Analyzing trace with hash -318032667, now seen corresponding path program 1 times [2024-06-04 16:29:12,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:12,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429015687] [2024-06-04 16:29:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:12,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:13,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:13,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429015687] [2024-06-04 16:29:13,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429015687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:13,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:13,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:13,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907149207] [2024-06-04 16:29:13,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:13,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:29:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:29:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:29:13,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:13,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 133 transitions, 1589 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:13,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:13,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:13,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:13,717 INFO L124 PetriNetUnfolderBase]: 694/1290 cut-off events. [2024-06-04 16:29:13,717 INFO L125 PetriNetUnfolderBase]: For 23719/23736 co-relation queries the response was YES. [2024-06-04 16:29:13,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7753 conditions, 1290 events. 694/1290 cut-off events. For 23719/23736 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6478 event pairs, 229 based on Foata normal form. 7/1289 useless extension candidates. Maximal degree in co-relation 7673. Up to 1163 conditions per place. [2024-06-04 16:29:13,728 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 121 selfloop transitions, 20 changer transitions 0/148 dead transitions. [2024-06-04 16:29:13,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 148 transitions, 1936 flow [2024-06-04 16:29:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:29:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:29:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-04 16:29:13,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 16:29:13,729 INFO L175 Difference]: Start difference. First operand has 158 places, 133 transitions, 1589 flow. Second operand 7 states and 114 transitions. [2024-06-04 16:29:13,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 148 transitions, 1936 flow [2024-06-04 16:29:13,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 148 transitions, 1854 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 16:29:13,773 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 1566 flow [2024-06-04 16:29:13,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1566, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2024-06-04 16:29:13,774 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 120 predicate places. [2024-06-04 16:29:13,774 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 1566 flow [2024-06-04 16:29:13,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:13,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:13,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:13,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 16:29:13,775 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:13,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:13,775 INFO L85 PathProgramCache]: Analyzing trace with hash 997450499, now seen corresponding path program 5 times [2024-06-04 16:29:13,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:13,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793968941] [2024-06-04 16:29:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:13,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:14,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:14,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793968941] [2024-06-04 16:29:14,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793968941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:14,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:14,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:14,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424610377] [2024-06-04 16:29:14,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:14,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:14,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:14,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:14,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:14,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 1566 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:14,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:14,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:14,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:14,671 INFO L124 PetriNetUnfolderBase]: 723/1350 cut-off events. [2024-06-04 16:29:14,671 INFO L125 PetriNetUnfolderBase]: For 26271/26302 co-relation queries the response was YES. [2024-06-04 16:29:14,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8140 conditions, 1350 events. 723/1350 cut-off events. For 26271/26302 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6828 event pairs, 175 based on Foata normal form. 5/1349 useless extension candidates. Maximal degree in co-relation 8058. Up to 567 conditions per place. [2024-06-04 16:29:14,683 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 102 selfloop transitions, 62 changer transitions 0/170 dead transitions. [2024-06-04 16:29:14,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 170 transitions, 2200 flow [2024-06-04 16:29:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:29:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:29:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-04 16:29:14,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-04 16:29:14,685 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 1566 flow. Second operand 11 states and 176 transitions. [2024-06-04 16:29:14,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 170 transitions, 2200 flow [2024-06-04 16:29:14,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 170 transitions, 2131 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 16:29:14,733 INFO L231 Difference]: Finished difference. Result has 164 places, 140 transitions, 1727 flow [2024-06-04 16:29:14,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1727, PETRI_PLACES=164, PETRI_TRANSITIONS=140} [2024-06-04 16:29:14,733 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2024-06-04 16:29:14,733 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 140 transitions, 1727 flow [2024-06-04 16:29:14,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:14,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:14,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:14,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 16:29:14,734 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:14,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1216680159, now seen corresponding path program 2 times [2024-06-04 16:29:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:14,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034417728] [2024-06-04 16:29:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:14,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034417728] [2024-06-04 16:29:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034417728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:15,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:15,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568788140] [2024-06-04 16:29:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:15,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:29:15,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:29:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:29:15,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:15,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 140 transitions, 1727 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:15,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:15,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:15,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:15,490 INFO L124 PetriNetUnfolderBase]: 734/1363 cut-off events. [2024-06-04 16:29:15,491 INFO L125 PetriNetUnfolderBase]: For 29921/29938 co-relation queries the response was YES. [2024-06-04 16:29:15,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8537 conditions, 1363 events. 734/1363 cut-off events. For 29921/29938 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6917 event pairs, 245 based on Foata normal form. 7/1362 useless extension candidates. Maximal degree in co-relation 8455. Up to 1195 conditions per place. [2024-06-04 16:29:15,503 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 128 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-04 16:29:15,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 155 transitions, 2154 flow [2024-06-04 16:29:15,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:29:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:29:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-04 16:29:15,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-06-04 16:29:15,505 INFO L175 Difference]: Start difference. First operand has 164 places, 140 transitions, 1727 flow. Second operand 6 states and 100 transitions. [2024-06-04 16:29:15,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 155 transitions, 2154 flow [2024-06-04 16:29:15,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 155 transitions, 2070 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 16:29:15,556 INFO L231 Difference]: Finished difference. Result has 166 places, 142 transitions, 1713 flow [2024-06-04 16:29:15,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1713, PETRI_PLACES=166, PETRI_TRANSITIONS=142} [2024-06-04 16:29:15,557 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 127 predicate places. [2024-06-04 16:29:15,557 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 142 transitions, 1713 flow [2024-06-04 16:29:15,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:15,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:15,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:15,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 16:29:15,558 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:15,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:15,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1015561443, now seen corresponding path program 3 times [2024-06-04 16:29:15,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:15,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041474978] [2024-06-04 16:29:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:15,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:15,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:15,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041474978] [2024-06-04 16:29:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041474978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:15,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:15,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445705679] [2024-06-04 16:29:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:15,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:29:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:29:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:29:16,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:16,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 142 transitions, 1713 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:16,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:16,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:16,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:16,303 INFO L124 PetriNetUnfolderBase]: 742/1379 cut-off events. [2024-06-04 16:29:16,303 INFO L125 PetriNetUnfolderBase]: For 31734/31751 co-relation queries the response was YES. [2024-06-04 16:29:16,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 1379 events. 742/1379 cut-off events. For 31734/31751 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7040 event pairs, 255 based on Foata normal form. 7/1378 useless extension candidates. Maximal degree in co-relation 8583. Up to 1185 conditions per place. [2024-06-04 16:29:16,316 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 126 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-04 16:29:16,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 155 transitions, 2099 flow [2024-06-04 16:29:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:29:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:29:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-04 16:29:16,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-04 16:29:16,318 INFO L175 Difference]: Start difference. First operand has 166 places, 142 transitions, 1713 flow. Second operand 6 states and 99 transitions. [2024-06-04 16:29:16,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 155 transitions, 2099 flow [2024-06-04 16:29:16,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 155 transitions, 2067 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 16:29:16,373 INFO L231 Difference]: Finished difference. Result has 170 places, 144 transitions, 1751 flow [2024-06-04 16:29:16,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1751, PETRI_PLACES=170, PETRI_TRANSITIONS=144} [2024-06-04 16:29:16,374 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2024-06-04 16:29:16,374 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 144 transitions, 1751 flow [2024-06-04 16:29:16,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:16,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:16,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:16,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 16:29:16,375 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:16,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash 997467363, now seen corresponding path program 4 times [2024-06-04 16:29:16,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:16,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331800623] [2024-06-04 16:29:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:16,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:16,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:16,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331800623] [2024-06-04 16:29:16,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331800623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:16,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:16,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:16,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890602018] [2024-06-04 16:29:16,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:16,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:29:16,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:16,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:29:16,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:29:16,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:16,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 144 transitions, 1751 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:16,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:16,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:16,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:17,121 INFO L124 PetriNetUnfolderBase]: 736/1371 cut-off events. [2024-06-04 16:29:17,121 INFO L125 PetriNetUnfolderBase]: For 33123/33140 co-relation queries the response was YES. [2024-06-04 16:29:17,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8664 conditions, 1371 events. 736/1371 cut-off events. For 33123/33140 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6981 event pairs, 257 based on Foata normal form. 7/1370 useless extension candidates. Maximal degree in co-relation 8578. Up to 1199 conditions per place. [2024-06-04 16:29:17,134 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 126 selfloop transitions, 26 changer transitions 0/159 dead transitions. [2024-06-04 16:29:17,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 159 transitions, 2109 flow [2024-06-04 16:29:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:29:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:29:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-04 16:29:17,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-04 16:29:17,136 INFO L175 Difference]: Start difference. First operand has 170 places, 144 transitions, 1751 flow. Second operand 6 states and 105 transitions. [2024-06-04 16:29:17,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 159 transitions, 2109 flow [2024-06-04 16:29:17,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 159 transitions, 2087 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-04 16:29:17,224 INFO L231 Difference]: Finished difference. Result has 175 places, 144 transitions, 1787 flow [2024-06-04 16:29:17,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1787, PETRI_PLACES=175, PETRI_TRANSITIONS=144} [2024-06-04 16:29:17,226 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 136 predicate places. [2024-06-04 16:29:17,226 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 144 transitions, 1787 flow [2024-06-04 16:29:17,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:17,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:17,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:17,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 16:29:17,227 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:17,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash -499838667, now seen corresponding path program 1 times [2024-06-04 16:29:17,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:17,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039129512] [2024-06-04 16:29:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:17,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:17,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:17,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039129512] [2024-06-04 16:29:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039129512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:17,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794314702] [2024-06-04 16:29:17,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:17,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:17,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:17,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 144 transitions, 1787 flow. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2024-06-04 16:29:17,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:17,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:17,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:18,244 INFO L124 PetriNetUnfolderBase]: 745/1412 cut-off events. [2024-06-04 16:29:18,244 INFO L125 PetriNetUnfolderBase]: For 37458/37494 co-relation queries the response was YES. [2024-06-04 16:29:18,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8921 conditions, 1412 events. 745/1412 cut-off events. For 37458/37494 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7405 event pairs, 213 based on Foata normal form. 14/1420 useless extension candidates. Maximal degree in co-relation 8833. Up to 1094 conditions per place. [2024-06-04 16:29:18,257 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 140 selfloop transitions, 27 changer transitions 0/187 dead transitions. [2024-06-04 16:29:18,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 187 transitions, 2388 flow [2024-06-04 16:29:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:29:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:29:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-04 16:29:18,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-04 16:29:18,258 INFO L175 Difference]: Start difference. First operand has 175 places, 144 transitions, 1787 flow. Second operand 9 states and 147 transitions. [2024-06-04 16:29:18,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 187 transitions, 2388 flow [2024-06-04 16:29:18,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 187 transitions, 2351 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 16:29:18,314 INFO L231 Difference]: Finished difference. Result has 185 places, 159 transitions, 1974 flow [2024-06-04 16:29:18,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1974, PETRI_PLACES=185, PETRI_TRANSITIONS=159} [2024-06-04 16:29:18,315 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2024-06-04 16:29:18,315 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 159 transitions, 1974 flow [2024-06-04 16:29:18,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2024-06-04 16:29:18,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:18,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:18,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 16:29:18,316 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:18,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1834879935, now seen corresponding path program 2 times [2024-06-04 16:29:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:18,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285818651] [2024-06-04 16:29:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:18,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:18,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285818651] [2024-06-04 16:29:18,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285818651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:18,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:18,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:18,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324478663] [2024-06-04 16:29:18,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:18,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:18,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:18,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:18,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 159 transitions, 1974 flow. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2024-06-04 16:29:18,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:18,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:18,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:19,232 INFO L124 PetriNetUnfolderBase]: 796/1498 cut-off events. [2024-06-04 16:29:19,232 INFO L125 PetriNetUnfolderBase]: For 41352/41388 co-relation queries the response was YES. [2024-06-04 16:29:19,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9620 conditions, 1498 events. 796/1498 cut-off events. For 41352/41388 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8021 event pairs, 221 based on Foata normal form. 14/1506 useless extension candidates. Maximal degree in co-relation 9527. Up to 1120 conditions per place. [2024-06-04 16:29:19,244 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 147 selfloop transitions, 33 changer transitions 0/200 dead transitions. [2024-06-04 16:29:19,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 200 transitions, 2597 flow [2024-06-04 16:29:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:29:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:29:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-04 16:29:19,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-04 16:29:19,249 INFO L175 Difference]: Start difference. First operand has 185 places, 159 transitions, 1974 flow. Second operand 10 states and 162 transitions. [2024-06-04 16:29:19,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 200 transitions, 2597 flow [2024-06-04 16:29:19,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 200 transitions, 2543 flow, removed 27 selfloop flow, removed 0 redundant places. [2024-06-04 16:29:19,315 INFO L231 Difference]: Finished difference. Result has 199 places, 169 transitions, 2134 flow [2024-06-04 16:29:19,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2134, PETRI_PLACES=199, PETRI_TRANSITIONS=169} [2024-06-04 16:29:19,316 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 160 predicate places. [2024-06-04 16:29:19,316 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 169 transitions, 2134 flow [2024-06-04 16:29:19,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2024-06-04 16:29:19,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:19,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:19,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 16:29:19,317 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:19,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1185616671, now seen corresponding path program 3 times [2024-06-04 16:29:19,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:19,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695869172] [2024-06-04 16:29:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:19,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:19,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:19,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695869172] [2024-06-04 16:29:19,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695869172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:19,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:19,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:19,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136166857] [2024-06-04 16:29:19,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:19,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:19,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:19,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:19,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 169 transitions, 2134 flow. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2024-06-04 16:29:19,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:19,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:19,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:20,319 INFO L124 PetriNetUnfolderBase]: 812/1528 cut-off events. [2024-06-04 16:29:20,319 INFO L125 PetriNetUnfolderBase]: For 43771/43807 co-relation queries the response was YES. [2024-06-04 16:29:20,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9936 conditions, 1528 events. 812/1528 cut-off events. For 43771/43807 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8220 event pairs, 246 based on Foata normal form. 14/1536 useless extension candidates. Maximal degree in co-relation 9836. Up to 1192 conditions per place. [2024-06-04 16:29:20,335 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 155 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2024-06-04 16:29:20,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 205 transitions, 2699 flow [2024-06-04 16:29:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:29:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:29:20,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-04 16:29:20,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 16:29:20,337 INFO L175 Difference]: Start difference. First operand has 199 places, 169 transitions, 2134 flow. Second operand 9 states and 152 transitions. [2024-06-04 16:29:20,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 205 transitions, 2699 flow [2024-06-04 16:29:20,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 205 transitions, 2638 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-04 16:29:20,410 INFO L231 Difference]: Finished difference. Result has 207 places, 175 transitions, 2238 flow [2024-06-04 16:29:20,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2238, PETRI_PLACES=207, PETRI_TRANSITIONS=175} [2024-06-04 16:29:20,412 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2024-06-04 16:29:20,413 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 175 transitions, 2238 flow [2024-06-04 16:29:20,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2024-06-04 16:29:20,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:20,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:20,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 16:29:20,413 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:20,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:20,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1725168082, now seen corresponding path program 1 times [2024-06-04 16:29:20,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:20,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684692283] [2024-06-04 16:29:20,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:20,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:20,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:20,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684692283] [2024-06-04 16:29:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684692283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:20,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:20,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:20,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432697286] [2024-06-04 16:29:20,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:29:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:20,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:29:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:29:20,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 16:29:20,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 175 transitions, 2238 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:20,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:20,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 16:29:20,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:20,800 INFO L124 PetriNetUnfolderBase]: 671/1475 cut-off events. [2024-06-04 16:29:20,800 INFO L125 PetriNetUnfolderBase]: For 28322/28545 co-relation queries the response was YES. [2024-06-04 16:29:20,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8752 conditions, 1475 events. 671/1475 cut-off events. For 28322/28545 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9484 event pairs, 173 based on Foata normal form. 41/1462 useless extension candidates. Maximal degree in co-relation 8647. Up to 301 conditions per place. [2024-06-04 16:29:20,810 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 73 selfloop transitions, 65 changer transitions 0/208 dead transitions. [2024-06-04 16:29:20,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 208 transitions, 2639 flow [2024-06-04 16:29:20,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:29:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:29:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-04 16:29:20,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-06-04 16:29:20,817 INFO L175 Difference]: Start difference. First operand has 207 places, 175 transitions, 2238 flow. Second operand 9 states and 204 transitions. [2024-06-04 16:29:20,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 208 transitions, 2639 flow [2024-06-04 16:29:20,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 208 transitions, 2569 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 16:29:20,883 INFO L231 Difference]: Finished difference. Result has 215 places, 174 transitions, 2366 flow [2024-06-04 16:29:20,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2366, PETRI_PLACES=215, PETRI_TRANSITIONS=174} [2024-06-04 16:29:20,884 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 176 predicate places. [2024-06-04 16:29:20,884 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 174 transitions, 2366 flow [2024-06-04 16:29:20,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:20,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:20,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:20,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 16:29:20,885 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:20,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:20,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1831749621, now seen corresponding path program 1 times [2024-06-04 16:29:20,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:20,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159902862] [2024-06-04 16:29:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:20,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:21,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159902862] [2024-06-04 16:29:21,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159902862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:21,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:21,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:21,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57698653] [2024-06-04 16:29:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:21,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:21,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:21,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 174 transitions, 2366 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:21,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:21,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:21,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:21,955 INFO L124 PetriNetUnfolderBase]: 1071/2047 cut-off events. [2024-06-04 16:29:21,956 INFO L125 PetriNetUnfolderBase]: For 62064/62134 co-relation queries the response was YES. [2024-06-04 16:29:21,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13922 conditions, 2047 events. 1071/2047 cut-off events. For 62064/62134 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12040 event pairs, 419 based on Foata normal form. 25/2062 useless extension candidates. Maximal degree in co-relation 13814. Up to 1678 conditions per place. [2024-06-04 16:29:21,970 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 177 selfloop transitions, 32 changer transitions 0/225 dead transitions. [2024-06-04 16:29:21,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 225 transitions, 3339 flow [2024-06-04 16:29:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:29:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:29:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-04 16:29:21,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-06-04 16:29:21,971 INFO L175 Difference]: Start difference. First operand has 215 places, 174 transitions, 2366 flow. Second operand 10 states and 154 transitions. [2024-06-04 16:29:21,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 225 transitions, 3339 flow [2024-06-04 16:29:22,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 225 transitions, 3318 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-04 16:29:22,060 INFO L231 Difference]: Finished difference. Result has 229 places, 190 transitions, 2715 flow [2024-06-04 16:29:22,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2715, PETRI_PLACES=229, PETRI_TRANSITIONS=190} [2024-06-04 16:29:22,061 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 190 predicate places. [2024-06-04 16:29:22,061 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 190 transitions, 2715 flow [2024-06-04 16:29:22,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:22,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:22,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:22,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 16:29:22,062 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:22,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2075288965, now seen corresponding path program 2 times [2024-06-04 16:29:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:22,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452015804] [2024-06-04 16:29:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:22,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452015804] [2024-06-04 16:29:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452015804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:22,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:22,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329059023] [2024-06-04 16:29:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:22,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:22,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:22,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 190 transitions, 2715 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:22,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:22,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:22,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:23,108 INFO L124 PetriNetUnfolderBase]: 1164/2198 cut-off events. [2024-06-04 16:29:23,108 INFO L125 PetriNetUnfolderBase]: For 71572/71668 co-relation queries the response was YES. [2024-06-04 16:29:23,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15275 conditions, 2198 events. 1164/2198 cut-off events. For 71572/71668 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13079 event pairs, 355 based on Foata normal form. 25/2206 useless extension candidates. Maximal degree in co-relation 15159. Up to 1459 conditions per place. [2024-06-04 16:29:23,127 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 170 selfloop transitions, 46 changer transitions 0/232 dead transitions. [2024-06-04 16:29:23,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 232 transitions, 3567 flow [2024-06-04 16:29:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:29:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:29:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 16:29:23,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 16:29:23,128 INFO L175 Difference]: Start difference. First operand has 229 places, 190 transitions, 2715 flow. Second operand 7 states and 133 transitions. [2024-06-04 16:29:23,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 232 transitions, 3567 flow [2024-06-04 16:29:23,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 232 transitions, 3518 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-04 16:29:23,233 INFO L231 Difference]: Finished difference. Result has 238 places, 200 transitions, 2975 flow [2024-06-04 16:29:23,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2975, PETRI_PLACES=238, PETRI_TRANSITIONS=200} [2024-06-04 16:29:23,233 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 199 predicate places. [2024-06-04 16:29:23,234 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 200 transitions, 2975 flow [2024-06-04 16:29:23,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:23,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:23,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:23,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 16:29:23,234 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:23,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:23,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1811289777, now seen corresponding path program 3 times [2024-06-04 16:29:23,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:23,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015095685] [2024-06-04 16:29:23,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:23,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:23,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:23,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015095685] [2024-06-04 16:29:23,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015095685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:23,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:23,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:23,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854311747] [2024-06-04 16:29:23,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:23,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:23,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:23,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:23,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:23,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 200 transitions, 2975 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:23,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:23,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:23,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:24,358 INFO L124 PetriNetUnfolderBase]: 1296/2430 cut-off events. [2024-06-04 16:29:24,359 INFO L125 PetriNetUnfolderBase]: For 82885/82983 co-relation queries the response was YES. [2024-06-04 16:29:24,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17264 conditions, 2430 events. 1296/2430 cut-off events. For 82885/82983 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14674 event pairs, 404 based on Foata normal form. 25/2438 useless extension candidates. Maximal degree in co-relation 17143. Up to 1593 conditions per place. [2024-06-04 16:29:24,375 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 185 selfloop transitions, 47 changer transitions 0/248 dead transitions. [2024-06-04 16:29:24,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 248 transitions, 3996 flow [2024-06-04 16:29:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:29:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:29:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-04 16:29:24,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037593984962406 [2024-06-04 16:29:24,376 INFO L175 Difference]: Start difference. First operand has 238 places, 200 transitions, 2975 flow. Second operand 7 states and 134 transitions. [2024-06-04 16:29:24,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 248 transitions, 3996 flow [2024-06-04 16:29:24,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 248 transitions, 3912 flow, removed 42 selfloop flow, removed 0 redundant places. [2024-06-04 16:29:24,494 INFO L231 Difference]: Finished difference. Result has 248 places, 217 transitions, 3349 flow [2024-06-04 16:29:24,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2931, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3349, PETRI_PLACES=248, PETRI_TRANSITIONS=217} [2024-06-04 16:29:24,494 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 209 predicate places. [2024-06-04 16:29:24,494 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 217 transitions, 3349 flow [2024-06-04 16:29:24,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:24,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:24,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:24,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 16:29:24,495 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:24,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:24,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1297613105, now seen corresponding path program 4 times [2024-06-04 16:29:24,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:24,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311552495] [2024-06-04 16:29:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:24,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:25,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311552495] [2024-06-04 16:29:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311552495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:25,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:25,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:25,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60477269] [2024-06-04 16:29:25,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:25,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:25,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:25,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:25,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 217 transitions, 3349 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:25,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:25,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:25,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:25,703 INFO L124 PetriNetUnfolderBase]: 1277/2404 cut-off events. [2024-06-04 16:29:25,703 INFO L125 PetriNetUnfolderBase]: For 80420/80549 co-relation queries the response was YES. [2024-06-04 16:29:25,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16963 conditions, 2404 events. 1277/2404 cut-off events. For 80420/80549 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14458 event pairs, 375 based on Foata normal form. 31/2416 useless extension candidates. Maximal degree in co-relation 16836. Up to 1531 conditions per place. [2024-06-04 16:29:25,731 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 183 selfloop transitions, 52 changer transitions 0/251 dead transitions. [2024-06-04 16:29:25,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 251 transitions, 4058 flow [2024-06-04 16:29:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:29:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:29:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-04 16:29:25,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-06-04 16:29:25,733 INFO L175 Difference]: Start difference. First operand has 248 places, 217 transitions, 3349 flow. Second operand 9 states and 154 transitions. [2024-06-04 16:29:25,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 251 transitions, 4058 flow [2024-06-04 16:29:25,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 251 transitions, 3988 flow, removed 35 selfloop flow, removed 0 redundant places. [2024-06-04 16:29:25,856 INFO L231 Difference]: Finished difference. Result has 257 places, 220 transitions, 3435 flow [2024-06-04 16:29:25,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3279, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3435, PETRI_PLACES=257, PETRI_TRANSITIONS=220} [2024-06-04 16:29:25,857 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 218 predicate places. [2024-06-04 16:29:25,857 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 220 transitions, 3435 flow [2024-06-04 16:29:25,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:25,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:25,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:25,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 16:29:25,857 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:25,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:25,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2114523802, now seen corresponding path program 2 times [2024-06-04 16:29:25,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:25,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259933505] [2024-06-04 16:29:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:25,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:25,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:25,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259933505] [2024-06-04 16:29:25,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259933505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:25,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:25,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:25,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486092558] [2024-06-04 16:29:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:25,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:29:25,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:25,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:29:25,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:29:25,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 16:29:25,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 220 transitions, 3435 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:25,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:25,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 16:29:25,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:26,359 INFO L124 PetriNetUnfolderBase]: 832/1878 cut-off events. [2024-06-04 16:29:26,359 INFO L125 PetriNetUnfolderBase]: For 44677/44866 co-relation queries the response was YES. [2024-06-04 16:29:26,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12363 conditions, 1878 events. 832/1878 cut-off events. For 44677/44866 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12867 event pairs, 247 based on Foata normal form. 53/1866 useless extension candidates. Maximal degree in co-relation 12233. Up to 684 conditions per place. [2024-06-04 16:29:26,372 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 101 selfloop transitions, 42 changer transitions 0/235 dead transitions. [2024-06-04 16:29:26,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 235 transitions, 3669 flow [2024-06-04 16:29:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:29:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:29:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-04 16:29:26,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2024-06-04 16:29:26,373 INFO L175 Difference]: Start difference. First operand has 257 places, 220 transitions, 3435 flow. Second operand 6 states and 147 transitions. [2024-06-04 16:29:26,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 235 transitions, 3669 flow [2024-06-04 16:29:26,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 235 transitions, 3530 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-04 16:29:26,475 INFO L231 Difference]: Finished difference. Result has 258 places, 209 transitions, 3230 flow [2024-06-04 16:29:26,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3070, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3230, PETRI_PLACES=258, PETRI_TRANSITIONS=209} [2024-06-04 16:29:26,476 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 219 predicate places. [2024-06-04 16:29:26,476 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 209 transitions, 3230 flow [2024-06-04 16:29:26,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:26,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:26,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 16:29:26,477 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:26,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1297274492, now seen corresponding path program 3 times [2024-06-04 16:29:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:26,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888453657] [2024-06-04 16:29:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:26,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:26,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888453657] [2024-06-04 16:29:26,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888453657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:26,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:26,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:29:26,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823806246] [2024-06-04 16:29:26,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:26,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:29:26,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:26,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:29:26,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:29:26,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 16:29:26,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 209 transitions, 3230 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:26,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:26,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 16:29:26,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:27,008 INFO L124 PetriNetUnfolderBase]: 764/1768 cut-off events. [2024-06-04 16:29:27,008 INFO L125 PetriNetUnfolderBase]: For 41303/41484 co-relation queries the response was YES. [2024-06-04 16:29:27,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 1768 events. 764/1768 cut-off events. For 41303/41484 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12084 event pairs, 218 based on Foata normal form. 33/1739 useless extension candidates. Maximal degree in co-relation 11303. Up to 683 conditions per place. [2024-06-04 16:29:27,024 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 100 selfloop transitions, 43 changer transitions 0/232 dead transitions. [2024-06-04 16:29:27,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 232 transitions, 3544 flow [2024-06-04 16:29:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:29:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:29:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-04 16:29:27,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5953947368421053 [2024-06-04 16:29:27,028 INFO L175 Difference]: Start difference. First operand has 258 places, 209 transitions, 3230 flow. Second operand 8 states and 181 transitions. [2024-06-04 16:29:27,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 232 transitions, 3544 flow [2024-06-04 16:29:27,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 232 transitions, 3505 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 16:29:27,135 INFO L231 Difference]: Finished difference. Result has 264 places, 205 transitions, 3204 flow [2024-06-04 16:29:27,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3204, PETRI_PLACES=264, PETRI_TRANSITIONS=205} [2024-06-04 16:29:27,136 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 225 predicate places. [2024-06-04 16:29:27,136 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 205 transitions, 3204 flow [2024-06-04 16:29:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:27,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:27,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:27,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 16:29:27,136 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:27,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:27,137 INFO L85 PathProgramCache]: Analyzing trace with hash 491307452, now seen corresponding path program 4 times [2024-06-04 16:29:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:27,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273643611] [2024-06-04 16:29:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:27,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:27,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273643611] [2024-06-04 16:29:27,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273643611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:27,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:27,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476854013] [2024-06-04 16:29:27,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:27,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:27,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:27,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:27,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 205 transitions, 3204 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:27,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:27,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:27,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:28,187 INFO L124 PetriNetUnfolderBase]: 1122/2229 cut-off events. [2024-06-04 16:29:28,188 INFO L125 PetriNetUnfolderBase]: For 88029/88078 co-relation queries the response was YES. [2024-06-04 16:29:28,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16359 conditions, 2229 events. 1122/2229 cut-off events. For 88029/88078 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13790 event pairs, 372 based on Foata normal form. 9/2229 useless extension candidates. Maximal degree in co-relation 16228. Up to 1572 conditions per place. [2024-06-04 16:29:28,206 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 171 selfloop transitions, 58 changer transitions 0/244 dead transitions. [2024-06-04 16:29:28,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 244 transitions, 4040 flow [2024-06-04 16:29:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:29:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:29:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-04 16:29:28,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-04 16:29:28,208 INFO L175 Difference]: Start difference. First operand has 264 places, 205 transitions, 3204 flow. Second operand 10 states and 167 transitions. [2024-06-04 16:29:28,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 244 transitions, 4040 flow [2024-06-04 16:29:28,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 244 transitions, 3954 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-04 16:29:28,371 INFO L231 Difference]: Finished difference. Result has 272 places, 214 transitions, 3420 flow [2024-06-04 16:29:28,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3420, PETRI_PLACES=272, PETRI_TRANSITIONS=214} [2024-06-04 16:29:28,372 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 233 predicate places. [2024-06-04 16:29:28,372 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 214 transitions, 3420 flow [2024-06-04 16:29:28,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:28,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:28,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:28,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 16:29:28,373 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:28,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:28,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1210129184, now seen corresponding path program 5 times [2024-06-04 16:29:28,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:28,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687666860] [2024-06-04 16:29:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:28,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:28,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:28,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687666860] [2024-06-04 16:29:28,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687666860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:28,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:28,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:28,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729162752] [2024-06-04 16:29:28,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:28,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:28,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:28,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:28,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:28,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:28,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 214 transitions, 3420 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:28,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:28,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:28,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:29,347 INFO L124 PetriNetUnfolderBase]: 1147/2269 cut-off events. [2024-06-04 16:29:29,347 INFO L125 PetriNetUnfolderBase]: For 95492/95543 co-relation queries the response was YES. [2024-06-04 16:29:29,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16906 conditions, 2269 events. 1147/2269 cut-off events. For 95492/95543 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14080 event pairs, 372 based on Foata normal form. 12/2272 useless extension candidates. Maximal degree in co-relation 16771. Up to 1487 conditions per place. [2024-06-04 16:29:29,367 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 174 selfloop transitions, 62 changer transitions 0/251 dead transitions. [2024-06-04 16:29:29,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 251 transitions, 4254 flow [2024-06-04 16:29:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:29:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:29:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-04 16:29:29,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-04 16:29:29,369 INFO L175 Difference]: Start difference. First operand has 272 places, 214 transitions, 3420 flow. Second operand 10 states and 170 transitions. [2024-06-04 16:29:29,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 251 transitions, 4254 flow [2024-06-04 16:29:29,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 251 transitions, 4217 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-04 16:29:29,502 INFO L231 Difference]: Finished difference. Result has 283 places, 219 transitions, 3644 flow [2024-06-04 16:29:29,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3644, PETRI_PLACES=283, PETRI_TRANSITIONS=219} [2024-06-04 16:29:29,503 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 244 predicate places. [2024-06-04 16:29:29,503 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 219 transitions, 3644 flow [2024-06-04 16:29:29,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:29,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:29,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:29,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 16:29:29,504 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:29,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:29,504 INFO L85 PathProgramCache]: Analyzing trace with hash -421374240, now seen corresponding path program 6 times [2024-06-04 16:29:29,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:29,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076987775] [2024-06-04 16:29:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:29,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:29,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:29,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076987775] [2024-06-04 16:29:29,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076987775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:29,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:29,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:29,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574932369] [2024-06-04 16:29:29,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:29,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:29,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:29,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:30,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:30,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 219 transitions, 3644 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:30,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:30,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:30,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:30,625 INFO L124 PetriNetUnfolderBase]: 1180/2329 cut-off events. [2024-06-04 16:29:30,626 INFO L125 PetriNetUnfolderBase]: For 103976/104032 co-relation queries the response was YES. [2024-06-04 16:29:30,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17756 conditions, 2329 events. 1180/2329 cut-off events. For 103976/104032 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14508 event pairs, 394 based on Foata normal form. 12/2332 useless extension candidates. Maximal degree in co-relation 17617. Up to 1402 conditions per place. [2024-06-04 16:29:30,643 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 173 selfloop transitions, 72 changer transitions 0/260 dead transitions. [2024-06-04 16:29:30,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 260 transitions, 4584 flow [2024-06-04 16:29:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:29:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:29:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-04 16:29:30,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-04 16:29:30,644 INFO L175 Difference]: Start difference. First operand has 283 places, 219 transitions, 3644 flow. Second operand 12 states and 196 transitions. [2024-06-04 16:29:30,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 260 transitions, 4584 flow [2024-06-04 16:29:30,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 260 transitions, 4450 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-04 16:29:30,801 INFO L231 Difference]: Finished difference. Result has 291 places, 224 transitions, 3807 flow [2024-06-04 16:29:30,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3807, PETRI_PLACES=291, PETRI_TRANSITIONS=224} [2024-06-04 16:29:30,802 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 252 predicate places. [2024-06-04 16:29:30,802 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 224 transitions, 3807 flow [2024-06-04 16:29:30,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:30,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:30,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:30,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 16:29:30,803 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:30,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash -421358368, now seen corresponding path program 1 times [2024-06-04 16:29:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:30,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26052201] [2024-06-04 16:29:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:31,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:31,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26052201] [2024-06-04 16:29:31,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26052201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:31,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:31,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:31,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053975245] [2024-06-04 16:29:31,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:31,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:31,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:31,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 224 transitions, 3807 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:31,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:31,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:31,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:31,718 INFO L124 PetriNetUnfolderBase]: 1178/2323 cut-off events. [2024-06-04 16:29:31,718 INFO L125 PetriNetUnfolderBase]: For 107719/107784 co-relation queries the response was YES. [2024-06-04 16:29:31,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18126 conditions, 2323 events. 1178/2323 cut-off events. For 107719/107784 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14488 event pairs, 500 based on Foata normal form. 7/2317 useless extension candidates. Maximal degree in co-relation 17984. Up to 2087 conditions per place. [2024-06-04 16:29:31,801 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 186 selfloop transitions, 33 changer transitions 0/238 dead transitions. [2024-06-04 16:29:31,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 238 transitions, 4297 flow [2024-06-04 16:29:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:29:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:29:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-04 16:29:31,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-06-04 16:29:31,802 INFO L175 Difference]: Start difference. First operand has 291 places, 224 transitions, 3807 flow. Second operand 9 states and 135 transitions. [2024-06-04 16:29:31,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 238 transitions, 4297 flow [2024-06-04 16:29:31,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 238 transitions, 4146 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 16:29:31,935 INFO L231 Difference]: Finished difference. Result has 292 places, 224 transitions, 3726 flow [2024-06-04 16:29:31,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3656, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3726, PETRI_PLACES=292, PETRI_TRANSITIONS=224} [2024-06-04 16:29:31,935 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 253 predicate places. [2024-06-04 16:29:31,935 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 224 transitions, 3726 flow [2024-06-04 16:29:31,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:31,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:31,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:31,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 16:29:31,936 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:31,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2105833244, now seen corresponding path program 2 times [2024-06-04 16:29:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:31,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261160963] [2024-06-04 16:29:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:31,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:32,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261160963] [2024-06-04 16:29:32,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261160963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:32,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:32,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:32,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121076468] [2024-06-04 16:29:32,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:32,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:32,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:32,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:32,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:32,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:32,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 224 transitions, 3726 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:32,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:32,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:32,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:32,921 INFO L124 PetriNetUnfolderBase]: 1185/2336 cut-off events. [2024-06-04 16:29:32,921 INFO L125 PetriNetUnfolderBase]: For 112601/112666 co-relation queries the response was YES. [2024-06-04 16:29:32,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18155 conditions, 2336 events. 1185/2336 cut-off events. For 112601/112666 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14571 event pairs, 502 based on Foata normal form. 7/2330 useless extension candidates. Maximal degree in co-relation 18012. Up to 2062 conditions per place. [2024-06-04 16:29:32,944 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 183 selfloop transitions, 40 changer transitions 0/242 dead transitions. [2024-06-04 16:29:32,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 242 transitions, 4320 flow [2024-06-04 16:29:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:29:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:29:32,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-04 16:29:32,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-06-04 16:29:32,946 INFO L175 Difference]: Start difference. First operand has 292 places, 224 transitions, 3726 flow. Second operand 9 states and 138 transitions. [2024-06-04 16:29:32,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 242 transitions, 4320 flow [2024-06-04 16:29:33,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 242 transitions, 4221 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 16:29:33,166 INFO L231 Difference]: Finished difference. Result has 292 places, 227 transitions, 3743 flow [2024-06-04 16:29:33,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3743, PETRI_PLACES=292, PETRI_TRANSITIONS=227} [2024-06-04 16:29:33,167 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 253 predicate places. [2024-06-04 16:29:33,167 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 227 transitions, 3743 flow [2024-06-04 16:29:33,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:33,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:33,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:33,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 16:29:33,168 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:33,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2105343134, now seen corresponding path program 3 times [2024-06-04 16:29:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:33,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834483980] [2024-06-04 16:29:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:33,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:33,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834483980] [2024-06-04 16:29:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834483980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808076645] [2024-06-04 16:29:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:33,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:33,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:33,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:33,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:33,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:33,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 227 transitions, 3743 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:33,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:33,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:33,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:34,073 INFO L124 PetriNetUnfolderBase]: 1182/2331 cut-off events. [2024-06-04 16:29:34,073 INFO L125 PetriNetUnfolderBase]: For 116258/116323 co-relation queries the response was YES. [2024-06-04 16:29:34,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18200 conditions, 2331 events. 1182/2331 cut-off events. For 116258/116323 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14577 event pairs, 499 based on Foata normal form. 7/2325 useless extension candidates. Maximal degree in co-relation 18059. Up to 2060 conditions per place. [2024-06-04 16:29:34,095 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 185 selfloop transitions, 39 changer transitions 0/243 dead transitions. [2024-06-04 16:29:34,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 243 transitions, 4241 flow [2024-06-04 16:29:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:29:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:29:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-04 16:29:34,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39210526315789473 [2024-06-04 16:29:34,097 INFO L175 Difference]: Start difference. First operand has 292 places, 227 transitions, 3743 flow. Second operand 10 states and 149 transitions. [2024-06-04 16:29:34,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 243 transitions, 4241 flow [2024-06-04 16:29:34,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 243 transitions, 4170 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 16:29:34,282 INFO L231 Difference]: Finished difference. Result has 298 places, 227 transitions, 3754 flow [2024-06-04 16:29:34,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3672, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3754, PETRI_PLACES=298, PETRI_TRANSITIONS=227} [2024-06-04 16:29:34,283 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 259 predicate places. [2024-06-04 16:29:34,283 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 227 transitions, 3754 flow [2024-06-04 16:29:34,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:34,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:34,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:34,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 16:29:34,284 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:34,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:34,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2105327262, now seen corresponding path program 7 times [2024-06-04 16:29:34,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:34,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598961710] [2024-06-04 16:29:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:34,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:34,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598961710] [2024-06-04 16:29:34,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598961710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:34,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:34,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:29:34,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585854924] [2024-06-04 16:29:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:34,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:29:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:29:34,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:29:34,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:34,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 227 transitions, 3754 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:34,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:34,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:34,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:35,328 INFO L124 PetriNetUnfolderBase]: 1163/2309 cut-off events. [2024-06-04 16:29:35,329 INFO L125 PetriNetUnfolderBase]: For 117007/117066 co-relation queries the response was YES. [2024-06-04 16:29:35,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17659 conditions, 2309 events. 1163/2309 cut-off events. For 117007/117066 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14376 event pairs, 340 based on Foata normal form. 12/2314 useless extension candidates. Maximal degree in co-relation 17518. Up to 1012 conditions per place. [2024-06-04 16:29:35,351 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 148 selfloop transitions, 94 changer transitions 0/257 dead transitions. [2024-06-04 16:29:35,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 257 transitions, 4492 flow [2024-06-04 16:29:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:29:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:29:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-04 16:29:35,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-04 16:29:35,352 INFO L175 Difference]: Start difference. First operand has 298 places, 227 transitions, 3754 flow. Second operand 11 states and 177 transitions. [2024-06-04 16:29:35,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 257 transitions, 4492 flow [2024-06-04 16:29:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 257 transitions, 4327 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-04 16:29:35,563 INFO L231 Difference]: Finished difference. Result has 299 places, 227 transitions, 3788 flow [2024-06-04 16:29:35,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3788, PETRI_PLACES=299, PETRI_TRANSITIONS=227} [2024-06-04 16:29:35,563 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 260 predicate places. [2024-06-04 16:29:35,563 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 227 transitions, 3788 flow [2024-06-04 16:29:35,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:35,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:35,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:35,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 16:29:35,564 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:35,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:35,564 INFO L85 PathProgramCache]: Analyzing trace with hash 856211200, now seen corresponding path program 4 times [2024-06-04 16:29:35,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:35,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340958266] [2024-06-04 16:29:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:36,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:36,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340958266] [2024-06-04 16:29:36,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340958266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:36,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:36,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:36,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913463896] [2024-06-04 16:29:36,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:36,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:36,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:36,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:36,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:36,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:36,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 227 transitions, 3788 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:36,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:36,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:36,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:36,650 INFO L124 PetriNetUnfolderBase]: 1171/2317 cut-off events. [2024-06-04 16:29:36,650 INFO L125 PetriNetUnfolderBase]: For 122532/122602 co-relation queries the response was YES. [2024-06-04 16:29:36,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18152 conditions, 2317 events. 1171/2317 cut-off events. For 122532/122602 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14419 event pairs, 456 based on Foata normal form. 7/2311 useless extension candidates. Maximal degree in co-relation 18012. Up to 1964 conditions per place. [2024-06-04 16:29:36,672 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 178 selfloop transitions, 49 changer transitions 0/246 dead transitions. [2024-06-04 16:29:36,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 246 transitions, 4394 flow [2024-06-04 16:29:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:29:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:29:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-04 16:29:36,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2024-06-04 16:29:36,673 INFO L175 Difference]: Start difference. First operand has 299 places, 227 transitions, 3788 flow. Second operand 10 states and 145 transitions. [2024-06-04 16:29:36,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 246 transitions, 4394 flow [2024-06-04 16:29:36,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 246 transitions, 4161 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 16:29:36,922 INFO L231 Difference]: Finished difference. Result has 298 places, 230 transitions, 3693 flow [2024-06-04 16:29:36,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3563, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3693, PETRI_PLACES=298, PETRI_TRANSITIONS=230} [2024-06-04 16:29:36,923 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 259 predicate places. [2024-06-04 16:29:36,923 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 230 transitions, 3693 flow [2024-06-04 16:29:36,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:36,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:36,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:36,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 16:29:36,924 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:36,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1399195420, now seen corresponding path program 5 times [2024-06-04 16:29:36,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:36,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849900661] [2024-06-04 16:29:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:36,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:37,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:37,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849900661] [2024-06-04 16:29:37,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849900661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:37,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:37,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:37,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882629687] [2024-06-04 16:29:37,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:37,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:37,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:37,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:37,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:37,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:37,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 230 transitions, 3693 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:37,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:37,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:37,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:37,850 INFO L124 PetriNetUnfolderBase]: 1178/2330 cut-off events. [2024-06-04 16:29:37,851 INFO L125 PetriNetUnfolderBase]: For 121262/121329 co-relation queries the response was YES. [2024-06-04 16:29:37,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17975 conditions, 2330 events. 1178/2330 cut-off events. For 121262/121329 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14515 event pairs, 460 based on Foata normal form. 7/2324 useless extension candidates. Maximal degree in co-relation 17835. Up to 1970 conditions per place. [2024-06-04 16:29:37,873 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 174 selfloop transitions, 54 changer transitions 0/247 dead transitions. [2024-06-04 16:29:37,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 247 transitions, 4297 flow [2024-06-04 16:29:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:29:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:29:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-04 16:29:37,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 16:29:37,874 INFO L175 Difference]: Start difference. First operand has 298 places, 230 transitions, 3693 flow. Second operand 9 states and 133 transitions. [2024-06-04 16:29:37,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 247 transitions, 4297 flow [2024-06-04 16:29:38,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 247 transitions, 4140 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 16:29:38,097 INFO L231 Difference]: Finished difference. Result has 299 places, 233 transitions, 3682 flow [2024-06-04 16:29:38,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3546, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3682, PETRI_PLACES=299, PETRI_TRANSITIONS=233} [2024-06-04 16:29:38,098 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 260 predicate places. [2024-06-04 16:29:38,098 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 233 transitions, 3682 flow [2024-06-04 16:29:38,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:38,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:38,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:38,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 16:29:38,099 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:38,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 856701310, now seen corresponding path program 6 times [2024-06-04 16:29:38,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:38,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511884177] [2024-06-04 16:29:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:38,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:38,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:38,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511884177] [2024-06-04 16:29:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511884177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:38,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:38,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837626404] [2024-06-04 16:29:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:38,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:38,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:38,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:38,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-04 16:29:38,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 233 transitions, 3682 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:38,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:38,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-04 16:29:38,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:39,064 INFO L124 PetriNetUnfolderBase]: 1175/2325 cut-off events. [2024-06-04 16:29:39,064 INFO L125 PetriNetUnfolderBase]: For 124773/124840 co-relation queries the response was YES. [2024-06-04 16:29:39,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17945 conditions, 2325 events. 1175/2325 cut-off events. For 124773/124840 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14484 event pairs, 459 based on Foata normal form. 7/2319 useless extension candidates. Maximal degree in co-relation 17806. Up to 1968 conditions per place. [2024-06-04 16:29:39,082 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 176 selfloop transitions, 51 changer transitions 0/246 dead transitions. [2024-06-04 16:29:39,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 246 transitions, 4174 flow [2024-06-04 16:29:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:29:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:29:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-04 16:29:39,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391812865497076 [2024-06-04 16:29:39,083 INFO L175 Difference]: Start difference. First operand has 299 places, 233 transitions, 3682 flow. Second operand 9 states and 134 transitions. [2024-06-04 16:29:39,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 246 transitions, 4174 flow [2024-06-04 16:29:39,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 246 transitions, 4113 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 16:29:39,303 INFO L231 Difference]: Finished difference. Result has 305 places, 233 transitions, 3727 flow [2024-06-04 16:29:39,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3727, PETRI_PLACES=305, PETRI_TRANSITIONS=233} [2024-06-04 16:29:39,304 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 266 predicate places. [2024-06-04 16:29:39,304 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 233 transitions, 3727 flow [2024-06-04 16:29:39,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:39,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:39,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:39,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 16:29:39,304 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:39,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash -189305722, now seen corresponding path program 1 times [2024-06-04 16:29:39,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:39,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625211689] [2024-06-04 16:29:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:39,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:39,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:39,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625211689] [2024-06-04 16:29:39,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625211689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:39,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:39,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:39,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589603078] [2024-06-04 16:29:39,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:39,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:39,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:39,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:39,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:39,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:39,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 233 transitions, 3727 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:39,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:39,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:39,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:40,282 INFO L124 PetriNetUnfolderBase]: 1234/2392 cut-off events. [2024-06-04 16:29:40,282 INFO L125 PetriNetUnfolderBase]: For 129214/129275 co-relation queries the response was YES. [2024-06-04 16:29:40,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18378 conditions, 2392 events. 1234/2392 cut-off events. For 129214/129275 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14621 event pairs, 375 based on Foata normal form. 5/2390 useless extension candidates. Maximal degree in co-relation 18237. Up to 1776 conditions per place. [2024-06-04 16:29:40,304 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 192 selfloop transitions, 67 changer transitions 0/263 dead transitions. [2024-06-04 16:29:40,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 263 transitions, 4460 flow [2024-06-04 16:29:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:29:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:29:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 175 transitions. [2024-06-04 16:29:40,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38377192982456143 [2024-06-04 16:29:40,305 INFO L175 Difference]: Start difference. First operand has 305 places, 233 transitions, 3727 flow. Second operand 12 states and 175 transitions. [2024-06-04 16:29:40,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 263 transitions, 4460 flow [2024-06-04 16:29:40,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 263 transitions, 4322 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 16:29:40,564 INFO L231 Difference]: Finished difference. Result has 310 places, 234 transitions, 3748 flow [2024-06-04 16:29:40,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3748, PETRI_PLACES=310, PETRI_TRANSITIONS=234} [2024-06-04 16:29:40,564 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 271 predicate places. [2024-06-04 16:29:40,564 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 234 transitions, 3748 flow [2024-06-04 16:29:40,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:40,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:40,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:40,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 16:29:40,565 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:40,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:40,565 INFO L85 PathProgramCache]: Analyzing trace with hash 622320866, now seen corresponding path program 2 times [2024-06-04 16:29:40,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:40,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861349340] [2024-06-04 16:29:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:40,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:40,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861349340] [2024-06-04 16:29:40,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861349340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:40,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:40,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343117927] [2024-06-04 16:29:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:40,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:40,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:40,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 234 transitions, 3748 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:40,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:40,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:40,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:41,636 INFO L124 PetriNetUnfolderBase]: 1241/2405 cut-off events. [2024-06-04 16:29:41,636 INFO L125 PetriNetUnfolderBase]: For 135002/135068 co-relation queries the response was YES. [2024-06-04 16:29:41,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18711 conditions, 2405 events. 1241/2405 cut-off events. For 135002/135068 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14744 event pairs, 362 based on Foata normal form. 5/2403 useless extension candidates. Maximal degree in co-relation 18570. Up to 1695 conditions per place. [2024-06-04 16:29:41,658 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 194 selfloop transitions, 78 changer transitions 0/276 dead transitions. [2024-06-04 16:29:41,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 276 transitions, 4655 flow [2024-06-04 16:29:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:29:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:29:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 229 transitions. [2024-06-04 16:29:41,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544891640866873 [2024-06-04 16:29:41,659 INFO L175 Difference]: Start difference. First operand has 310 places, 234 transitions, 3748 flow. Second operand 17 states and 229 transitions. [2024-06-04 16:29:41,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 276 transitions, 4655 flow [2024-06-04 16:29:41,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 276 transitions, 4505 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 16:29:41,901 INFO L231 Difference]: Finished difference. Result has 318 places, 238 transitions, 3827 flow [2024-06-04 16:29:41,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3598, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3827, PETRI_PLACES=318, PETRI_TRANSITIONS=238} [2024-06-04 16:29:41,902 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 279 predicate places. [2024-06-04 16:29:41,902 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 238 transitions, 3827 flow [2024-06-04 16:29:41,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:41,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:41,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:41,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 16:29:41,903 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:41,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash 397822724, now seen corresponding path program 3 times [2024-06-04 16:29:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:41,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692814001] [2024-06-04 16:29:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:41,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:42,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:42,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692814001] [2024-06-04 16:29:42,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692814001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:42,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:42,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:42,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714325198] [2024-06-04 16:29:42,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:42,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:42,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:42,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:42,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:42,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:42,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 238 transitions, 3827 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:42,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:42,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:42,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:42,968 INFO L124 PetriNetUnfolderBase]: 1245/2413 cut-off events. [2024-06-04 16:29:42,968 INFO L125 PetriNetUnfolderBase]: For 140932/140995 co-relation queries the response was YES. [2024-06-04 16:29:42,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18952 conditions, 2413 events. 1245/2413 cut-off events. For 140932/140995 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14797 event pairs, 356 based on Foata normal form. 5/2411 useless extension candidates. Maximal degree in co-relation 18810. Up to 1695 conditions per place. [2024-06-04 16:29:42,991 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 193 selfloop transitions, 81 changer transitions 0/278 dead transitions. [2024-06-04 16:29:42,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 278 transitions, 4700 flow [2024-06-04 16:29:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:29:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:29:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 236 transitions. [2024-06-04 16:29:42,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34502923976608185 [2024-06-04 16:29:42,992 INFO L175 Difference]: Start difference. First operand has 318 places, 238 transitions, 3827 flow. Second operand 18 states and 236 transitions. [2024-06-04 16:29:42,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 278 transitions, 4700 flow [2024-06-04 16:29:43,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 278 transitions, 4522 flow, removed 19 selfloop flow, removed 13 redundant places. [2024-06-04 16:29:43,247 INFO L231 Difference]: Finished difference. Result has 323 places, 239 transitions, 3838 flow [2024-06-04 16:29:43,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3655, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3838, PETRI_PLACES=323, PETRI_TRANSITIONS=239} [2024-06-04 16:29:43,248 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 284 predicate places. [2024-06-04 16:29:43,248 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 239 transitions, 3838 flow [2024-06-04 16:29:43,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:43,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:43,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:43,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 16:29:43,249 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:43,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash 397838534, now seen corresponding path program 4 times [2024-06-04 16:29:43,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726156717] [2024-06-04 16:29:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:43,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:43,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726156717] [2024-06-04 16:29:43,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726156717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:43,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:43,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:43,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703251709] [2024-06-04 16:29:43,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:43,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:43,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:43,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:43,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 239 transitions, 3838 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:43,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:43,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:43,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:44,278 INFO L124 PetriNetUnfolderBase]: 1242/2408 cut-off events. [2024-06-04 16:29:44,278 INFO L125 PetriNetUnfolderBase]: For 144947/145010 co-relation queries the response was YES. [2024-06-04 16:29:44,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18981 conditions, 2408 events. 1242/2408 cut-off events. For 144947/145010 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14760 event pairs, 363 based on Foata normal form. 5/2406 useless extension candidates. Maximal degree in co-relation 18838. Up to 1695 conditions per place. [2024-06-04 16:29:44,302 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 189 selfloop transitions, 81 changer transitions 0/274 dead transitions. [2024-06-04 16:29:44,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 274 transitions, 4592 flow [2024-06-04 16:29:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:29:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:29:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 215 transitions. [2024-06-04 16:29:44,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3536184210526316 [2024-06-04 16:29:44,303 INFO L175 Difference]: Start difference. First operand has 323 places, 239 transitions, 3838 flow. Second operand 16 states and 215 transitions. [2024-06-04 16:29:44,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 274 transitions, 4592 flow [2024-06-04 16:29:44,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 274 transitions, 4411 flow, removed 14 selfloop flow, removed 14 redundant places. [2024-06-04 16:29:44,570 INFO L231 Difference]: Finished difference. Result has 325 places, 239 transitions, 3823 flow [2024-06-04 16:29:44,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3657, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3823, PETRI_PLACES=325, PETRI_TRANSITIONS=239} [2024-06-04 16:29:44,571 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 286 predicate places. [2024-06-04 16:29:44,571 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 239 transitions, 3823 flow [2024-06-04 16:29:44,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:44,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:44,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:44,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 16:29:44,572 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:44,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:44,573 INFO L85 PathProgramCache]: Analyzing trace with hash 840651524, now seen corresponding path program 5 times [2024-06-04 16:29:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:44,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967448032] [2024-06-04 16:29:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:44,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:44,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:44,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967448032] [2024-06-04 16:29:44,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967448032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:44,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:44,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:44,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179760230] [2024-06-04 16:29:44,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:44,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:44,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:45,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:45,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 239 transitions, 3823 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:45,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:45,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:45,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:45,677 INFO L124 PetriNetUnfolderBase]: 1249/2421 cut-off events. [2024-06-04 16:29:45,677 INFO L125 PetriNetUnfolderBase]: For 151433/151496 co-relation queries the response was YES. [2024-06-04 16:29:45,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19172 conditions, 2421 events. 1249/2421 cut-off events. For 151433/151496 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14903 event pairs, 348 based on Foata normal form. 5/2419 useless extension candidates. Maximal degree in co-relation 19028. Up to 1532 conditions per place. [2024-06-04 16:29:45,704 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 187 selfloop transitions, 89 changer transitions 0/280 dead transitions. [2024-06-04 16:29:45,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 280 transitions, 4759 flow [2024-06-04 16:29:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:29:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:29:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 221 transitions. [2024-06-04 16:29:45,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36348684210526316 [2024-06-04 16:29:45,705 INFO L175 Difference]: Start difference. First operand has 325 places, 239 transitions, 3823 flow. Second operand 16 states and 221 transitions. [2024-06-04 16:29:45,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 280 transitions, 4759 flow [2024-06-04 16:29:46,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 280 transitions, 4597 flow, removed 0 selfloop flow, removed 15 redundant places. [2024-06-04 16:29:46,009 INFO L231 Difference]: Finished difference. Result has 327 places, 243 transitions, 3916 flow [2024-06-04 16:29:46,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3661, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3916, PETRI_PLACES=327, PETRI_TRANSITIONS=243} [2024-06-04 16:29:46,010 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 288 predicate places. [2024-06-04 16:29:46,010 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 243 transitions, 3916 flow [2024-06-04 16:29:46,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:46,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:46,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:46,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 16:29:46,010 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:46,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash 211803386, now seen corresponding path program 6 times [2024-06-04 16:29:46,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:46,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959946362] [2024-06-04 16:29:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:46,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:46,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959946362] [2024-06-04 16:29:46,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959946362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:46,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:46,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:46,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057997027] [2024-06-04 16:29:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:46,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:46,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:46,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:46,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 243 transitions, 3916 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:46,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:46,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:46,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:47,148 INFO L124 PetriNetUnfolderBase]: 1263/2447 cut-off events. [2024-06-04 16:29:47,148 INFO L125 PetriNetUnfolderBase]: For 159992/160055 co-relation queries the response was YES. [2024-06-04 16:29:47,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19680 conditions, 2447 events. 1263/2447 cut-off events. For 159992/160055 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15090 event pairs, 343 based on Foata normal form. 5/2445 useless extension candidates. Maximal degree in co-relation 19534. Up to 1532 conditions per place. [2024-06-04 16:29:47,170 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 186 selfloop transitions, 95 changer transitions 0/285 dead transitions. [2024-06-04 16:29:47,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 285 transitions, 4883 flow [2024-06-04 16:29:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:29:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:29:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 228 transitions. [2024-06-04 16:29:47,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2024-06-04 16:29:47,172 INFO L175 Difference]: Start difference. First operand has 327 places, 243 transitions, 3916 flow. Second operand 17 states and 228 transitions. [2024-06-04 16:29:47,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 285 transitions, 4883 flow [2024-06-04 16:29:47,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 285 transitions, 4657 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-06-04 16:29:47,495 INFO L231 Difference]: Finished difference. Result has 331 places, 247 transitions, 3962 flow [2024-06-04 16:29:47,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3962, PETRI_PLACES=331, PETRI_TRANSITIONS=247} [2024-06-04 16:29:47,495 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 292 predicate places. [2024-06-04 16:29:47,495 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 247 transitions, 3962 flow [2024-06-04 16:29:47,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:47,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:47,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:47,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 16:29:47,496 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:47,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:47,496 INFO L85 PathProgramCache]: Analyzing trace with hash 856322024, now seen corresponding path program 7 times [2024-06-04 16:29:47,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:47,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60302272] [2024-06-04 16:29:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:47,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:47,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60302272] [2024-06-04 16:29:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60302272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:47,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:47,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:47,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304662384] [2024-06-04 16:29:47,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:47,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:47,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:47,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:47,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 247 transitions, 3962 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:47,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:47,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:47,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:48,603 INFO L124 PetriNetUnfolderBase]: 1260/2442 cut-off events. [2024-06-04 16:29:48,603 INFO L125 PetriNetUnfolderBase]: For 164018/164083 co-relation queries the response was YES. [2024-06-04 16:29:48,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19630 conditions, 2442 events. 1260/2442 cut-off events. For 164018/164083 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15025 event pairs, 354 based on Foata normal form. 5/2440 useless extension candidates. Maximal degree in co-relation 19484. Up to 1532 conditions per place. [2024-06-04 16:29:48,626 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 185 selfloop transitions, 95 changer transitions 0/284 dead transitions. [2024-06-04 16:29:48,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 284 transitions, 4763 flow [2024-06-04 16:29:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:29:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:29:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 227 transitions. [2024-06-04 16:29:48,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35139318885448917 [2024-06-04 16:29:48,627 INFO L175 Difference]: Start difference. First operand has 331 places, 247 transitions, 3962 flow. Second operand 17 states and 227 transitions. [2024-06-04 16:29:48,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 284 transitions, 4763 flow [2024-06-04 16:29:48,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 284 transitions, 4599 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 16:29:48,959 INFO L231 Difference]: Finished difference. Result has 338 places, 247 transitions, 3992 flow [2024-06-04 16:29:48,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3798, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3992, PETRI_PLACES=338, PETRI_TRANSITIONS=247} [2024-06-04 16:29:48,959 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 299 predicate places. [2024-06-04 16:29:48,960 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 247 transitions, 3992 flow [2024-06-04 16:29:48,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:48,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:48,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:48,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 16:29:48,960 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:48,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1081800386, now seen corresponding path program 8 times [2024-06-04 16:29:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:48,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111961260] [2024-06-04 16:29:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:48,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:49,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111961260] [2024-06-04 16:29:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111961260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514538172] [2024-06-04 16:29:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:49,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:49,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 247 transitions, 3992 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:49,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:49,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:49,895 INFO L124 PetriNetUnfolderBase]: 1257/2437 cut-off events. [2024-06-04 16:29:49,895 INFO L125 PetriNetUnfolderBase]: For 168080/168150 co-relation queries the response was YES. [2024-06-04 16:29:49,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19681 conditions, 2437 events. 1257/2437 cut-off events. For 168080/168150 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14951 event pairs, 349 based on Foata normal form. 8/2438 useless extension candidates. Maximal degree in co-relation 19534. Up to 1532 conditions per place. [2024-06-04 16:29:49,920 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 178 selfloop transitions, 104 changer transitions 0/286 dead transitions. [2024-06-04 16:29:49,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 286 transitions, 4928 flow [2024-06-04 16:29:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:29:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:29:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 202 transitions. [2024-06-04 16:29:49,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37969924812030076 [2024-06-04 16:29:49,921 INFO L175 Difference]: Start difference. First operand has 338 places, 247 transitions, 3992 flow. Second operand 14 states and 202 transitions. [2024-06-04 16:29:49,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 286 transitions, 4928 flow [2024-06-04 16:29:50,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 286 transitions, 4736 flow, removed 0 selfloop flow, removed 16 redundant places. [2024-06-04 16:29:50,261 INFO L231 Difference]: Finished difference. Result has 336 places, 248 transitions, 4041 flow [2024-06-04 16:29:50,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3802, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4041, PETRI_PLACES=336, PETRI_TRANSITIONS=248} [2024-06-04 16:29:50,262 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 297 predicate places. [2024-06-04 16:29:50,262 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 248 transitions, 4041 flow [2024-06-04 16:29:50,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:50,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:50,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:50,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 16:29:50,263 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:50,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:50,264 INFO L85 PathProgramCache]: Analyzing trace with hash 841112804, now seen corresponding path program 9 times [2024-06-04 16:29:50,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:50,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719459377] [2024-06-04 16:29:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:50,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:50,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:50,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719459377] [2024-06-04 16:29:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719459377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:50,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:50,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:50,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571675844] [2024-06-04 16:29:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:50,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:50,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:50,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:50,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 248 transitions, 4041 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:50,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:50,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:50,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:51,358 INFO L124 PetriNetUnfolderBase]: 1261/2445 cut-off events. [2024-06-04 16:29:51,358 INFO L125 PetriNetUnfolderBase]: For 175592/175659 co-relation queries the response was YES. [2024-06-04 16:29:51,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19922 conditions, 2445 events. 1261/2445 cut-off events. For 175592/175659 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15035 event pairs, 346 based on Foata normal form. 5/2443 useless extension candidates. Maximal degree in co-relation 19774. Up to 1532 conditions per place. [2024-06-04 16:29:51,384 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 194 selfloop transitions, 95 changer transitions 0/293 dead transitions. [2024-06-04 16:29:51,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 293 transitions, 4971 flow [2024-06-04 16:29:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-04 16:29:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-04 16:29:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2024-06-04 16:29:51,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33959899749373434 [2024-06-04 16:29:51,387 INFO L175 Difference]: Start difference. First operand has 336 places, 248 transitions, 4041 flow. Second operand 21 states and 271 transitions. [2024-06-04 16:29:51,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 293 transitions, 4971 flow [2024-06-04 16:29:51,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 293 transitions, 4800 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-04 16:29:51,701 INFO L231 Difference]: Finished difference. Result has 347 places, 249 transitions, 4086 flow [2024-06-04 16:29:51,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4086, PETRI_PLACES=347, PETRI_TRANSITIONS=249} [2024-06-04 16:29:51,701 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 308 predicate places. [2024-06-04 16:29:51,702 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 249 transitions, 4086 flow [2024-06-04 16:29:51,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:51,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:51,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:51,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 16:29:51,702 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:51,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:51,703 INFO L85 PathProgramCache]: Analyzing trace with hash 841128614, now seen corresponding path program 10 times [2024-06-04 16:29:51,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:51,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84217512] [2024-06-04 16:29:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:51,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84217512] [2024-06-04 16:29:52,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84217512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:52,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:52,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:52,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825506558] [2024-06-04 16:29:52,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:52,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:52,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:52,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:52,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:52,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:52,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 249 transitions, 4086 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:52,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:52,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:52,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:52,795 INFO L124 PetriNetUnfolderBase]: 1258/2440 cut-off events. [2024-06-04 16:29:52,795 INFO L125 PetriNetUnfolderBase]: For 181543/181613 co-relation queries the response was YES. [2024-06-04 16:29:52,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19976 conditions, 2440 events. 1258/2440 cut-off events. For 181543/181613 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15032 event pairs, 346 based on Foata normal form. 5/2438 useless extension candidates. Maximal degree in co-relation 19827. Up to 1532 conditions per place. [2024-06-04 16:29:52,820 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 190 selfloop transitions, 95 changer transitions 0/289 dead transitions. [2024-06-04 16:29:52,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 289 transitions, 4886 flow [2024-06-04 16:29:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-04 16:29:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-04 16:29:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 250 transitions. [2024-06-04 16:29:52,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3462603878116344 [2024-06-04 16:29:52,825 INFO L175 Difference]: Start difference. First operand has 347 places, 249 transitions, 4086 flow. Second operand 19 states and 250 transitions. [2024-06-04 16:29:52,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 289 transitions, 4886 flow [2024-06-04 16:29:53,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 289 transitions, 4624 flow, removed 16 selfloop flow, removed 19 redundant places. [2024-06-04 16:29:53,234 INFO L231 Difference]: Finished difference. Result has 347 places, 249 transitions, 4018 flow [2024-06-04 16:29:53,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3824, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4018, PETRI_PLACES=347, PETRI_TRANSITIONS=249} [2024-06-04 16:29:53,235 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 308 predicate places. [2024-06-04 16:29:53,235 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 249 transitions, 4018 flow [2024-06-04 16:29:53,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:53,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:53,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:53,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 16:29:53,236 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:53,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:53,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1512929948, now seen corresponding path program 11 times [2024-06-04 16:29:53,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:53,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592078588] [2024-06-04 16:29:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:53,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:53,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:53,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592078588] [2024-06-04 16:29:53,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592078588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:53,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:53,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676803095] [2024-06-04 16:29:53,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:53,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:53,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:53,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:53,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:53,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 249 transitions, 4018 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:53,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:53,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:53,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:54,331 INFO L124 PetriNetUnfolderBase]: 1282/2484 cut-off events. [2024-06-04 16:29:54,332 INFO L125 PetriNetUnfolderBase]: For 193620/193683 co-relation queries the response was YES. [2024-06-04 16:29:54,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20517 conditions, 2484 events. 1282/2484 cut-off events. For 193620/193683 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15344 event pairs, 337 based on Foata normal form. 5/2482 useless extension candidates. Maximal degree in co-relation 20367. Up to 1142 conditions per place. [2024-06-04 16:29:54,358 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 187 selfloop transitions, 111 changer transitions 0/302 dead transitions. [2024-06-04 16:29:54,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 302 transitions, 5292 flow [2024-06-04 16:29:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-04 16:29:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-04 16:29:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 257 transitions. [2024-06-04 16:29:54,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3381578947368421 [2024-06-04 16:29:54,359 INFO L175 Difference]: Start difference. First operand has 347 places, 249 transitions, 4018 flow. Second operand 20 states and 257 transitions. [2024-06-04 16:29:54,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 302 transitions, 5292 flow [2024-06-04 16:29:54,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 302 transitions, 5102 flow, removed 0 selfloop flow, removed 18 redundant places. [2024-06-04 16:29:54,704 INFO L231 Difference]: Finished difference. Result has 349 places, 257 transitions, 4206 flow [2024-06-04 16:29:54,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4206, PETRI_PLACES=349, PETRI_TRANSITIONS=257} [2024-06-04 16:29:54,705 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 310 predicate places. [2024-06-04 16:29:54,705 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 257 transitions, 4206 flow [2024-06-04 16:29:54,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:54,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:54,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:54,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 16:29:54,706 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:54,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:54,706 INFO L85 PathProgramCache]: Analyzing trace with hash 772267234, now seen corresponding path program 12 times [2024-06-04 16:29:54,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:54,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207166723] [2024-06-04 16:29:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:54,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:55,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:55,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207166723] [2024-06-04 16:29:55,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207166723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:55,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:55,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:55,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192292408] [2024-06-04 16:29:55,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:55,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:55,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:55,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:55,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:55,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 257 transitions, 4206 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:55,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:55,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:55,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:56,046 INFO L124 PetriNetUnfolderBase]: 1279/2479 cut-off events. [2024-06-04 16:29:56,046 INFO L125 PetriNetUnfolderBase]: For 198671/198734 co-relation queries the response was YES. [2024-06-04 16:29:56,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20600 conditions, 2479 events. 1279/2479 cut-off events. For 198671/198734 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15322 event pairs, 339 based on Foata normal form. 5/2477 useless extension candidates. Maximal degree in co-relation 20449. Up to 1142 conditions per place. [2024-06-04 16:29:56,074 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 178 selfloop transitions, 110 changer transitions 0/292 dead transitions. [2024-06-04 16:29:56,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 292 transitions, 5098 flow [2024-06-04 16:29:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 16:29:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 16:29:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 205 transitions. [2024-06-04 16:29:56,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35964912280701755 [2024-06-04 16:29:56,075 INFO L175 Difference]: Start difference. First operand has 349 places, 257 transitions, 4206 flow. Second operand 15 states and 205 transitions. [2024-06-04 16:29:56,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 292 transitions, 5098 flow [2024-06-04 16:29:56,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 292 transitions, 4817 flow, removed 39 selfloop flow, removed 12 redundant places. [2024-06-04 16:29:56,445 INFO L231 Difference]: Finished difference. Result has 352 places, 257 transitions, 4149 flow [2024-06-04 16:29:56,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4149, PETRI_PLACES=352, PETRI_TRANSITIONS=257} [2024-06-04 16:29:56,445 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 313 predicate places. [2024-06-04 16:29:56,445 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 257 transitions, 4149 flow [2024-06-04 16:29:56,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:56,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:56,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:56,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 16:29:56,446 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:56,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash 996998370, now seen corresponding path program 13 times [2024-06-04 16:29:56,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:56,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292294780] [2024-06-04 16:29:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:56,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:56,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:56,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292294780] [2024-06-04 16:29:56,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292294780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:56,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:56,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:29:56,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845781423] [2024-06-04 16:29:56,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:56,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:29:56,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:56,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:29:56,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:29:56,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:56,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 257 transitions, 4149 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:56,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:56,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:56,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:57,371 INFO L124 PetriNetUnfolderBase]: 1283/2487 cut-off events. [2024-06-04 16:29:57,372 INFO L125 PetriNetUnfolderBase]: For 203809/203870 co-relation queries the response was YES. [2024-06-04 16:29:57,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20677 conditions, 2487 events. 1283/2487 cut-off events. For 203809/203870 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15282 event pairs, 314 based on Foata normal form. 5/2485 useless extension candidates. Maximal degree in co-relation 20525. Up to 1142 conditions per place. [2024-06-04 16:29:57,395 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 182 selfloop transitions, 102 changer transitions 0/288 dead transitions. [2024-06-04 16:29:57,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 288 transitions, 4952 flow [2024-06-04 16:29:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:29:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:29:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-04 16:29:57,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38516746411483255 [2024-06-04 16:29:57,396 INFO L175 Difference]: Start difference. First operand has 352 places, 257 transitions, 4149 flow. Second operand 11 states and 161 transitions. [2024-06-04 16:29:57,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 288 transitions, 4952 flow [2024-06-04 16:29:57,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 288 transitions, 4732 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-06-04 16:29:57,779 INFO L231 Difference]: Finished difference. Result has 349 places, 258 transitions, 4166 flow [2024-06-04 16:29:57,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3929, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4166, PETRI_PLACES=349, PETRI_TRANSITIONS=258} [2024-06-04 16:29:57,780 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 310 predicate places. [2024-06-04 16:29:57,780 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 258 transitions, 4166 flow [2024-06-04 16:29:57,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:57,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:57,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:57,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 16:29:57,781 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:57,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash 425370150, now seen corresponding path program 14 times [2024-06-04 16:29:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:57,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674295740] [2024-06-04 16:29:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:57,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:58,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:58,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674295740] [2024-06-04 16:29:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674295740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:58,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:58,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:58,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081226723] [2024-06-04 16:29:58,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:58,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:58,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:58,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:58,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 258 transitions, 4166 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:58,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:58,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:58,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:58,817 INFO L124 PetriNetUnfolderBase]: 1297/2513 cut-off events. [2024-06-04 16:29:58,818 INFO L125 PetriNetUnfolderBase]: For 214713/214774 co-relation queries the response was YES. [2024-06-04 16:29:58,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21086 conditions, 2513 events. 1297/2513 cut-off events. For 214713/214774 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15550 event pairs, 330 based on Foata normal form. 5/2511 useless extension candidates. Maximal degree in co-relation 20933. Up to 1142 conditions per place. [2024-06-04 16:29:58,841 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 180 selfloop transitions, 116 changer transitions 0/300 dead transitions. [2024-06-04 16:29:58,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 300 transitions, 5157 flow [2024-06-04 16:29:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:29:58,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:29:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 215 transitions. [2024-06-04 16:29:58,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3536184210526316 [2024-06-04 16:29:58,842 INFO L175 Difference]: Start difference. First operand has 349 places, 258 transitions, 4166 flow. Second operand 16 states and 215 transitions. [2024-06-04 16:29:58,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 300 transitions, 5157 flow [2024-06-04 16:29:59,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 300 transitions, 5020 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-04 16:29:59,222 INFO L231 Difference]: Finished difference. Result has 360 places, 262 transitions, 4337 flow [2024-06-04 16:29:59,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4337, PETRI_PLACES=360, PETRI_TRANSITIONS=262} [2024-06-04 16:29:59,223 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 321 predicate places. [2024-06-04 16:29:59,223 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 262 transitions, 4337 flow [2024-06-04 16:29:59,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:59,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:29:59,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:29:59,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 16:29:59,224 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:29:59,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:29:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash 772744324, now seen corresponding path program 15 times [2024-06-04 16:29:59,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:29:59,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469271194] [2024-06-04 16:29:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:29:59,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:29:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:29:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:29:59,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:29:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469271194] [2024-06-04 16:29:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469271194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:29:59,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:29:59,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:29:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777594930] [2024-06-04 16:29:59,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:29:59,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:29:59,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:29:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:29:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:29:59,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:29:59,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 262 transitions, 4337 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:29:59,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:29:59,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:29:59,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:00,417 INFO L124 PetriNetUnfolderBase]: 1294/2508 cut-off events. [2024-06-04 16:30:00,417 INFO L125 PetriNetUnfolderBase]: For 220625/220691 co-relation queries the response was YES. [2024-06-04 16:30:00,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21230 conditions, 2508 events. 1294/2508 cut-off events. For 220625/220691 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15570 event pairs, 338 based on Foata normal form. 5/2506 useless extension candidates. Maximal degree in co-relation 21075. Up to 1142 conditions per place. [2024-06-04 16:30:00,442 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 183 selfloop transitions, 115 changer transitions 0/302 dead transitions. [2024-06-04 16:30:00,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 302 transitions, 5271 flow [2024-06-04 16:30:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:30:00,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:30:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 235 transitions. [2024-06-04 16:30:00,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3435672514619883 [2024-06-04 16:30:00,443 INFO L175 Difference]: Start difference. First operand has 360 places, 262 transitions, 4337 flow. Second operand 18 states and 235 transitions. [2024-06-04 16:30:00,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 302 transitions, 5271 flow [2024-06-04 16:30:00,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 302 transitions, 5025 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-04 16:30:00,928 INFO L231 Difference]: Finished difference. Result has 367 places, 262 transitions, 4325 flow [2024-06-04 16:30:00,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4091, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4325, PETRI_PLACES=367, PETRI_TRANSITIONS=262} [2024-06-04 16:30:00,929 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 328 predicate places. [2024-06-04 16:30:00,929 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 262 transitions, 4325 flow [2024-06-04 16:30:00,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:00,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:00,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:00,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 16:30:00,930 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:00,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:00,930 INFO L85 PathProgramCache]: Analyzing trace with hash 787937734, now seen corresponding path program 16 times [2024-06-04 16:30:00,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:00,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652914871] [2024-06-04 16:30:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:00,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:01,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652914871] [2024-06-04 16:30:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652914871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:01,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:01,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:01,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224571606] [2024-06-04 16:30:01,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:01,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:01,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:01,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:01,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:01,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 262 transitions, 4325 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:01,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:01,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:01,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:02,008 INFO L124 PetriNetUnfolderBase]: 1298/2516 cut-off events. [2024-06-04 16:30:02,008 INFO L125 PetriNetUnfolderBase]: For 228949/229015 co-relation queries the response was YES. [2024-06-04 16:30:02,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21445 conditions, 2516 events. 1298/2516 cut-off events. For 228949/229015 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15636 event pairs, 341 based on Foata normal form. 5/2514 useless extension candidates. Maximal degree in co-relation 21289. Up to 1142 conditions per place. [2024-06-04 16:30:02,033 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 186 selfloop transitions, 110 changer transitions 0/300 dead transitions. [2024-06-04 16:30:02,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 300 transitions, 5278 flow [2024-06-04 16:30:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:30:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:30:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 226 transitions. [2024-06-04 16:30:02,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3498452012383901 [2024-06-04 16:30:02,034 INFO L175 Difference]: Start difference. First operand has 367 places, 262 transitions, 4325 flow. Second operand 17 states and 226 transitions. [2024-06-04 16:30:02,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 300 transitions, 5278 flow [2024-06-04 16:30:02,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 300 transitions, 5037 flow, removed 0 selfloop flow, removed 18 redundant places. [2024-06-04 16:30:02,511 INFO L231 Difference]: Finished difference. Result has 366 places, 263 transitions, 4333 flow [2024-06-04 16:30:02,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4086, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4333, PETRI_PLACES=366, PETRI_TRANSITIONS=263} [2024-06-04 16:30:02,512 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 327 predicate places. [2024-06-04 16:30:02,512 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 263 transitions, 4333 flow [2024-06-04 16:30:02,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:02,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:02,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:02,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 16:30:02,513 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:02,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash 425904900, now seen corresponding path program 17 times [2024-06-04 16:30:02,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:02,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256189400] [2024-06-04 16:30:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:02,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:02,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:02,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256189400] [2024-06-04 16:30:02,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256189400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:02,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:02,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:30:02,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886831474] [2024-06-04 16:30:02,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:02,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:30:02,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:30:02,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:30:02,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:02,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 263 transitions, 4333 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:02,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:02,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:02,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:03,435 INFO L124 PetriNetUnfolderBase]: 1302/2524 cut-off events. [2024-06-04 16:30:03,435 INFO L125 PetriNetUnfolderBase]: For 234689/234758 co-relation queries the response was YES. [2024-06-04 16:30:03,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21632 conditions, 2524 events. 1302/2524 cut-off events. For 234689/234758 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15581 event pairs, 317 based on Foata normal form. 5/2522 useless extension candidates. Maximal degree in co-relation 21475. Up to 1142 conditions per place. [2024-06-04 16:30:03,462 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 209 selfloop transitions, 84 changer transitions 0/297 dead transitions. [2024-06-04 16:30:03,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 297 transitions, 5276 flow [2024-06-04 16:30:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:30:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:30:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-04 16:30:03,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793859649122807 [2024-06-04 16:30:03,463 INFO L175 Difference]: Start difference. First operand has 366 places, 263 transitions, 4333 flow. Second operand 12 states and 173 transitions. [2024-06-04 16:30:03,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 297 transitions, 5276 flow [2024-06-04 16:30:04,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 297 transitions, 4976 flow, removed 14 selfloop flow, removed 16 redundant places. [2024-06-04 16:30:04,098 INFO L231 Difference]: Finished difference. Result has 362 places, 264 transitions, 4236 flow [2024-06-04 16:30:04,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4033, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4236, PETRI_PLACES=362, PETRI_TRANSITIONS=264} [2024-06-04 16:30:04,099 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 323 predicate places. [2024-06-04 16:30:04,099 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 264 transitions, 4236 flow [2024-06-04 16:30:04,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:04,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:04,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:04,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 16:30:04,100 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:04,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 788456674, now seen corresponding path program 18 times [2024-06-04 16:30:04,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:04,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050676993] [2024-06-04 16:30:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:04,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:04,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:04,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050676993] [2024-06-04 16:30:04,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050676993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:04,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:04,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:30:04,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607976303] [2024-06-04 16:30:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:04,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:30:04,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:30:04,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:30:04,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:04,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 264 transitions, 4236 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:04,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:04,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:04,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:05,103 INFO L124 PetriNetUnfolderBase]: 1299/2519 cut-off events. [2024-06-04 16:30:05,103 INFO L125 PetriNetUnfolderBase]: For 238050/238111 co-relation queries the response was YES. [2024-06-04 16:30:05,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21380 conditions, 2519 events. 1299/2519 cut-off events. For 238050/238111 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15617 event pairs, 358 based on Foata normal form. 8/2520 useless extension candidates. Maximal degree in co-relation 21223. Up to 1142 conditions per place. [2024-06-04 16:30:05,139 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 163 selfloop transitions, 137 changer transitions 0/304 dead transitions. [2024-06-04 16:30:05,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 304 transitions, 5337 flow [2024-06-04 16:30:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:30:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:30:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-04 16:30:05,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057017543859649 [2024-06-04 16:30:05,142 INFO L175 Difference]: Start difference. First operand has 362 places, 264 transitions, 4236 flow. Second operand 12 states and 185 transitions. [2024-06-04 16:30:05,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 304 transitions, 5337 flow [2024-06-04 16:30:05,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 304 transitions, 5177 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 16:30:05,689 INFO L231 Difference]: Finished difference. Result has 365 places, 264 transitions, 4356 flow [2024-06-04 16:30:05,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4076, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4356, PETRI_PLACES=365, PETRI_TRANSITIONS=264} [2024-06-04 16:30:05,690 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 326 predicate places. [2024-06-04 16:30:05,690 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 264 transitions, 4356 flow [2024-06-04 16:30:05,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:05,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:05,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:05,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 16:30:05,691 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:05,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:05,691 INFO L85 PathProgramCache]: Analyzing trace with hash 787921924, now seen corresponding path program 19 times [2024-06-04 16:30:05,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:05,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173928671] [2024-06-04 16:30:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:05,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:06,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173928671] [2024-06-04 16:30:06,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173928671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:06,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:06,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:06,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796091116] [2024-06-04 16:30:06,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:06,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:06,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:06,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:06,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:06,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 264 transitions, 4356 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:06,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:06,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:06,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:06,841 INFO L124 PetriNetUnfolderBase]: 1296/2514 cut-off events. [2024-06-04 16:30:06,841 INFO L125 PetriNetUnfolderBase]: For 245232/245288 co-relation queries the response was YES. [2024-06-04 16:30:06,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21550 conditions, 2514 events. 1296/2514 cut-off events. For 245232/245288 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15639 event pairs, 340 based on Foata normal form. 5/2512 useless extension candidates. Maximal degree in co-relation 21393. Up to 1142 conditions per place. [2024-06-04 16:30:06,868 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 186 selfloop transitions, 110 changer transitions 0/300 dead transitions. [2024-06-04 16:30:06,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 300 transitions, 5180 flow [2024-06-04 16:30:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:30:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:30:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 225 transitions. [2024-06-04 16:30:06,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34829721362229105 [2024-06-04 16:30:06,870 INFO L175 Difference]: Start difference. First operand has 365 places, 264 transitions, 4356 flow. Second operand 17 states and 225 transitions. [2024-06-04 16:30:06,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 300 transitions, 5180 flow [2024-06-04 16:30:07,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 300 transitions, 4784 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-06-04 16:30:07,359 INFO L231 Difference]: Finished difference. Result has 369 places, 264 transitions, 4184 flow [2024-06-04 16:30:07,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3960, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4184, PETRI_PLACES=369, PETRI_TRANSITIONS=264} [2024-06-04 16:30:07,359 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 330 predicate places. [2024-06-04 16:30:07,359 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 264 transitions, 4184 flow [2024-06-04 16:30:07,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:07,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:07,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:07,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 16:30:07,360 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:07,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:07,360 INFO L85 PathProgramCache]: Analyzing trace with hash 425385960, now seen corresponding path program 20 times [2024-06-04 16:30:07,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:07,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357512601] [2024-06-04 16:30:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:07,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:07,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357512601] [2024-06-04 16:30:07,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357512601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:07,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:07,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851075089] [2024-06-04 16:30:07,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:07,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:07,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:07,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:07,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:07,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 264 transitions, 4184 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:07,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:07,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:07,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:08,449 INFO L124 PetriNetUnfolderBase]: 1293/2509 cut-off events. [2024-06-04 16:30:08,450 INFO L125 PetriNetUnfolderBase]: For 250307/250364 co-relation queries the response was YES. [2024-06-04 16:30:08,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21252 conditions, 2509 events. 1293/2509 cut-off events. For 250307/250364 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15588 event pairs, 340 based on Foata normal form. 5/2507 useless extension candidates. Maximal degree in co-relation 21097. Up to 1142 conditions per place. [2024-06-04 16:30:08,473 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 181 selfloop transitions, 116 changer transitions 0/301 dead transitions. [2024-06-04 16:30:08,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 301 transitions, 5018 flow [2024-06-04 16:30:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:30:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:30:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 214 transitions. [2024-06-04 16:30:08,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519736842105263 [2024-06-04 16:30:08,474 INFO L175 Difference]: Start difference. First operand has 369 places, 264 transitions, 4184 flow. Second operand 16 states and 214 transitions. [2024-06-04 16:30:08,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 301 transitions, 5018 flow [2024-06-04 16:30:09,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 301 transitions, 4782 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-06-04 16:30:09,141 INFO L231 Difference]: Finished difference. Result has 369 places, 264 transitions, 4184 flow [2024-06-04 16:30:09,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3948, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4184, PETRI_PLACES=369, PETRI_TRANSITIONS=264} [2024-06-04 16:30:09,141 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 330 predicate places. [2024-06-04 16:30:09,141 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 264 transitions, 4184 flow [2024-06-04 16:30:09,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:09,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:09,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:09,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 16:30:09,142 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:09,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1488338968, now seen corresponding path program 1 times [2024-06-04 16:30:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:09,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283083918] [2024-06-04 16:30:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:09,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:09,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:09,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283083918] [2024-06-04 16:30:09,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283083918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:09,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:09,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:09,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697141976] [2024-06-04 16:30:09,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:09,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:09,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:09,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:09,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:09,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 264 transitions, 4184 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:09,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:09,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:09,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:10,287 INFO L124 PetriNetUnfolderBase]: 1325/2573 cut-off events. [2024-06-04 16:30:10,287 INFO L125 PetriNetUnfolderBase]: For 263077/263134 co-relation queries the response was YES. [2024-06-04 16:30:10,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21709 conditions, 2573 events. 1325/2573 cut-off events. For 263077/263134 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16081 event pairs, 422 based on Foata normal form. 9/2575 useless extension candidates. Maximal degree in co-relation 21553. Up to 1930 conditions per place. [2024-06-04 16:30:10,314 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 261 selfloop transitions, 41 changer transitions 0/306 dead transitions. [2024-06-04 16:30:10,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 306 transitions, 5066 flow [2024-06-04 16:30:10,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:30:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:30:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 176 transitions. [2024-06-04 16:30:10,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38596491228070173 [2024-06-04 16:30:10,316 INFO L175 Difference]: Start difference. First operand has 369 places, 264 transitions, 4184 flow. Second operand 12 states and 176 transitions. [2024-06-04 16:30:10,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 306 transitions, 5066 flow [2024-06-04 16:30:10,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 306 transitions, 4832 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-04 16:30:10,895 INFO L231 Difference]: Finished difference. Result has 369 places, 270 transitions, 4152 flow [2024-06-04 16:30:10,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3950, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4152, PETRI_PLACES=369, PETRI_TRANSITIONS=270} [2024-06-04 16:30:10,896 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 330 predicate places. [2024-06-04 16:30:10,896 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 270 transitions, 4152 flow [2024-06-04 16:30:10,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:10,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:10,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:10,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 16:30:10,896 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:10,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:10,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1663718716, now seen corresponding path program 2 times [2024-06-04 16:30:10,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:10,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620468856] [2024-06-04 16:30:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:10,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:11,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:11,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620468856] [2024-06-04 16:30:11,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620468856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:11,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:11,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:11,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636319019] [2024-06-04 16:30:11,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:11,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:11,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:11,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:11,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:11,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:11,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 270 transitions, 4152 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:11,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:11,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:11,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:12,054 INFO L124 PetriNetUnfolderBase]: 1316/2558 cut-off events. [2024-06-04 16:30:12,054 INFO L125 PetriNetUnfolderBase]: For 252287/252344 co-relation queries the response was YES. [2024-06-04 16:30:12,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21170 conditions, 2558 events. 1316/2558 cut-off events. For 252287/252344 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15975 event pairs, 419 based on Foata normal form. 9/2560 useless extension candidates. Maximal degree in co-relation 21010. Up to 1915 conditions per place. [2024-06-04 16:30:12,081 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 256 selfloop transitions, 44 changer transitions 0/304 dead transitions. [2024-06-04 16:30:12,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 304 transitions, 4930 flow [2024-06-04 16:30:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:30:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:30:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2024-06-04 16:30:12,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2024-06-04 16:30:12,082 INFO L175 Difference]: Start difference. First operand has 369 places, 270 transitions, 4152 flow. Second operand 12 states and 174 transitions. [2024-06-04 16:30:12,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 304 transitions, 4930 flow [2024-06-04 16:30:12,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 304 transitions, 4832 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 16:30:12,662 INFO L231 Difference]: Finished difference. Result has 375 places, 270 transitions, 4146 flow [2024-06-04 16:30:12,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4146, PETRI_PLACES=375, PETRI_TRANSITIONS=270} [2024-06-04 16:30:12,662 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 336 predicate places. [2024-06-04 16:30:12,662 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 270 transitions, 4146 flow [2024-06-04 16:30:12,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:12,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:12,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:12,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 16:30:12,663 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:12,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1465644274, now seen corresponding path program 3 times [2024-06-04 16:30:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357368364] [2024-06-04 16:30:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:13,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:13,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357368364] [2024-06-04 16:30:13,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357368364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:13,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:13,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:30:13,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621678784] [2024-06-04 16:30:13,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:13,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:30:13,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:13,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:30:13,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:30:13,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:13,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 270 transitions, 4146 flow. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:13,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:13,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:13,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:13,697 INFO L124 PetriNetUnfolderBase]: 1289/2511 cut-off events. [2024-06-04 16:30:13,698 INFO L125 PetriNetUnfolderBase]: For 250832/250892 co-relation queries the response was YES. [2024-06-04 16:30:13,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20011 conditions, 2511 events. 1289/2511 cut-off events. For 250832/250892 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15674 event pairs, 428 based on Foata normal form. 21/2525 useless extension candidates. Maximal degree in co-relation 19852. Up to 1837 conditions per place. [2024-06-04 16:30:13,725 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 248 selfloop transitions, 50 changer transitions 0/302 dead transitions. [2024-06-04 16:30:13,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 302 transitions, 4922 flow [2024-06-04 16:30:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:30:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:30:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-04 16:30:13,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-06-04 16:30:13,726 INFO L175 Difference]: Start difference. First operand has 375 places, 270 transitions, 4146 flow. Second operand 10 states and 156 transitions. [2024-06-04 16:30:13,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 302 transitions, 4922 flow [2024-06-04 16:30:14,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 302 transitions, 4775 flow, removed 22 selfloop flow, removed 12 redundant places. [2024-06-04 16:30:14,230 INFO L231 Difference]: Finished difference. Result has 373 places, 270 transitions, 4108 flow [2024-06-04 16:30:14,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4001, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4108, PETRI_PLACES=373, PETRI_TRANSITIONS=270} [2024-06-04 16:30:14,231 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 334 predicate places. [2024-06-04 16:30:14,231 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 270 transitions, 4108 flow [2024-06-04 16:30:14,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:14,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:14,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:14,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 16:30:14,232 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:14,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash -863216016, now seen corresponding path program 4 times [2024-06-04 16:30:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:14,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982159347] [2024-06-04 16:30:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:14,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:14,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:14,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982159347] [2024-06-04 16:30:14,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982159347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:14,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:14,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:30:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274367373] [2024-06-04 16:30:14,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:14,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:30:14,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:30:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:30:14,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:14,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 270 transitions, 4108 flow. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:14,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:14,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:14,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:15,234 INFO L124 PetriNetUnfolderBase]: 1271/2481 cut-off events. [2024-06-04 16:30:15,235 INFO L125 PetriNetUnfolderBase]: For 222885/222945 co-relation queries the response was YES. [2024-06-04 16:30:15,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19141 conditions, 2481 events. 1271/2481 cut-off events. For 222885/222945 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15481 event pairs, 413 based on Foata normal form. 18/2492 useless extension candidates. Maximal degree in co-relation 18987. Up to 1854 conditions per place. [2024-06-04 16:30:15,258 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 251 selfloop transitions, 51 changer transitions 0/306 dead transitions. [2024-06-04 16:30:15,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 306 transitions, 4925 flow [2024-06-04 16:30:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:30:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:30:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-04 16:30:15,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-06-04 16:30:15,259 INFO L175 Difference]: Start difference. First operand has 373 places, 270 transitions, 4108 flow. Second operand 11 states and 165 transitions. [2024-06-04 16:30:15,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 306 transitions, 4925 flow [2024-06-04 16:30:15,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 306 transitions, 4794 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 16:30:15,826 INFO L231 Difference]: Finished difference. Result has 378 places, 271 transitions, 4123 flow [2024-06-04 16:30:15,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3979, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4123, PETRI_PLACES=378, PETRI_TRANSITIONS=271} [2024-06-04 16:30:15,827 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 339 predicate places. [2024-06-04 16:30:15,827 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 271 transitions, 4123 flow [2024-06-04 16:30:15,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:15,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:15,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:15,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 16:30:15,828 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:15,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:15,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1706063581, now seen corresponding path program 1 times [2024-06-04 16:30:15,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:15,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515721186] [2024-06-04 16:30:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:15,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:16,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:16,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515721186] [2024-06-04 16:30:16,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515721186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:16,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:16,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:16,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603892750] [2024-06-04 16:30:16,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:16,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:16,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:16,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:16,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:16,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:16,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 271 transitions, 4123 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:16,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:16,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:16,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:16,952 INFO L124 PetriNetUnfolderBase]: 1262/2466 cut-off events. [2024-06-04 16:30:16,952 INFO L125 PetriNetUnfolderBase]: For 206474/206533 co-relation queries the response was YES. [2024-06-04 16:30:16,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18736 conditions, 2466 events. 1262/2466 cut-off events. For 206474/206533 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15422 event pairs, 405 based on Foata normal form. 9/2468 useless extension candidates. Maximal degree in co-relation 18581. Up to 1874 conditions per place. [2024-06-04 16:30:16,978 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 237 selfloop transitions, 64 changer transitions 0/305 dead transitions. [2024-06-04 16:30:16,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 305 transitions, 4871 flow [2024-06-04 16:30:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:30:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:30:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 178 transitions. [2024-06-04 16:30:16,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39035087719298245 [2024-06-04 16:30:16,979 INFO L175 Difference]: Start difference. First operand has 378 places, 271 transitions, 4123 flow. Second operand 12 states and 178 transitions. [2024-06-04 16:30:16,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 305 transitions, 4871 flow [2024-06-04 16:30:17,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 305 transitions, 4731 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-04 16:30:17,454 INFO L231 Difference]: Finished difference. Result has 380 places, 271 transitions, 4115 flow [2024-06-04 16:30:17,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3983, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4115, PETRI_PLACES=380, PETRI_TRANSITIONS=271} [2024-06-04 16:30:17,455 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 341 predicate places. [2024-06-04 16:30:17,455 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 271 transitions, 4115 flow [2024-06-04 16:30:17,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:17,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:17,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:17,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 16:30:17,456 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:17,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1628811233, now seen corresponding path program 2 times [2024-06-04 16:30:17,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:17,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035899999] [2024-06-04 16:30:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:17,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035899999] [2024-06-04 16:30:17,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035899999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:17,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:17,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:17,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091803181] [2024-06-04 16:30:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:17,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:17,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:17,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:17,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:17,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 271 transitions, 4115 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:17,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:17,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:17,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:18,476 INFO L124 PetriNetUnfolderBase]: 1274/2490 cut-off events. [2024-06-04 16:30:18,477 INFO L125 PetriNetUnfolderBase]: For 212138/212198 co-relation queries the response was YES. [2024-06-04 16:30:18,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18891 conditions, 2490 events. 1274/2490 cut-off events. For 212138/212198 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15623 event pairs, 381 based on Foata normal form. 9/2492 useless extension candidates. Maximal degree in co-relation 18738. Up to 1765 conditions per place. [2024-06-04 16:30:18,498 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 237 selfloop transitions, 68 changer transitions 0/309 dead transitions. [2024-06-04 16:30:18,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 309 transitions, 5025 flow [2024-06-04 16:30:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:30:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:30:18,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-04 16:30:18,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2024-06-04 16:30:18,499 INFO L175 Difference]: Start difference. First operand has 380 places, 271 transitions, 4115 flow. Second operand 12 states and 183 transitions. [2024-06-04 16:30:18,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 309 transitions, 5025 flow [2024-06-04 16:30:18,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 309 transitions, 4858 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 16:30:18,967 INFO L231 Difference]: Finished difference. Result has 381 places, 272 transitions, 4112 flow [2024-06-04 16:30:18,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3948, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4112, PETRI_PLACES=381, PETRI_TRANSITIONS=272} [2024-06-04 16:30:18,968 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 342 predicate places. [2024-06-04 16:30:18,968 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 272 transitions, 4112 flow [2024-06-04 16:30:18,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:18,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:18,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:18,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 16:30:18,969 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:18,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash -982727973, now seen corresponding path program 3 times [2024-06-04 16:30:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237743636] [2024-06-04 16:30:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:18,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:19,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:19,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237743636] [2024-06-04 16:30:19,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237743636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:19,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:19,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:19,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566166600] [2024-06-04 16:30:19,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:19,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:19,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:19,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:19,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 272 transitions, 4112 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:19,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:19,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:19,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:20,019 INFO L124 PetriNetUnfolderBase]: 1265/2475 cut-off events. [2024-06-04 16:30:20,019 INFO L125 PetriNetUnfolderBase]: For 205606/205666 co-relation queries the response was YES. [2024-06-04 16:30:20,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18488 conditions, 2475 events. 1265/2475 cut-off events. For 205606/205666 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15493 event pairs, 382 based on Foata normal form. 9/2477 useless extension candidates. Maximal degree in co-relation 18336. Up to 1763 conditions per place. [2024-06-04 16:30:20,046 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 244 selfloop transitions, 68 changer transitions 0/316 dead transitions. [2024-06-04 16:30:20,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 316 transitions, 5036 flow [2024-06-04 16:30:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:30:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:30:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 208 transitions. [2024-06-04 16:30:20,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39097744360902253 [2024-06-04 16:30:20,047 INFO L175 Difference]: Start difference. First operand has 381 places, 272 transitions, 4112 flow. Second operand 14 states and 208 transitions. [2024-06-04 16:30:20,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 316 transitions, 5036 flow [2024-06-04 16:30:20,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 316 transitions, 4885 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 16:30:20,671 INFO L231 Difference]: Finished difference. Result has 386 places, 272 transitions, 4101 flow [2024-06-04 16:30:20,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3961, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4101, PETRI_PLACES=386, PETRI_TRANSITIONS=272} [2024-06-04 16:30:20,671 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 347 predicate places. [2024-06-04 16:30:20,671 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 272 transitions, 4101 flow [2024-06-04 16:30:20,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:20,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:20,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:20,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 16:30:20,672 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:20,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:20,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1696479263, now seen corresponding path program 4 times [2024-06-04 16:30:20,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:20,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502042845] [2024-06-04 16:30:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:20,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:21,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:21,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502042845] [2024-06-04 16:30:21,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502042845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:21,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:21,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907553496] [2024-06-04 16:30:21,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:21,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:21,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:21,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 272 transitions, 4101 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:21,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:21,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:21,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:21,709 INFO L124 PetriNetUnfolderBase]: 1256/2460 cut-off events. [2024-06-04 16:30:21,710 INFO L125 PetriNetUnfolderBase]: For 198381/198434 co-relation queries the response was YES. [2024-06-04 16:30:21,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18088 conditions, 2460 events. 1256/2460 cut-off events. For 198381/198434 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15413 event pairs, 377 based on Foata normal form. 9/2462 useless extension candidates. Maximal degree in co-relation 17936. Up to 1761 conditions per place. [2024-06-04 16:30:21,731 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 242 selfloop transitions, 69 changer transitions 0/315 dead transitions. [2024-06-04 16:30:21,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 315 transitions, 4893 flow [2024-06-04 16:30:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:30:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:30:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 206 transitions. [2024-06-04 16:30:21,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38721804511278196 [2024-06-04 16:30:21,732 INFO L175 Difference]: Start difference. First operand has 386 places, 272 transitions, 4101 flow. Second operand 14 states and 206 transitions. [2024-06-04 16:30:21,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 315 transitions, 4893 flow [2024-06-04 16:30:22,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 315 transitions, 4674 flow, removed 13 selfloop flow, removed 14 redundant places. [2024-06-04 16:30:22,347 INFO L231 Difference]: Finished difference. Result has 386 places, 272 transitions, 4024 flow [2024-06-04 16:30:22,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3882, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4024, PETRI_PLACES=386, PETRI_TRANSITIONS=272} [2024-06-04 16:30:22,347 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 347 predicate places. [2024-06-04 16:30:22,348 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 272 transitions, 4024 flow [2024-06-04 16:30:22,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:22,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:22,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:22,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 16:30:22,348 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:22,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash -567143523, now seen corresponding path program 5 times [2024-06-04 16:30:22,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:22,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379422664] [2024-06-04 16:30:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:22,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379422664] [2024-06-04 16:30:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379422664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:22,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:22,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054950491] [2024-06-04 16:30:22,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:22,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:22,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:22,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:22,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:22,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 272 transitions, 4024 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:22,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:22,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:22,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:23,424 INFO L124 PetriNetUnfolderBase]: 1247/2445 cut-off events. [2024-06-04 16:30:23,424 INFO L125 PetriNetUnfolderBase]: For 189381/189435 co-relation queries the response was YES. [2024-06-04 16:30:23,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17609 conditions, 2445 events. 1247/2445 cut-off events. For 189381/189435 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15304 event pairs, 358 based on Foata normal form. 9/2447 useless extension candidates. Maximal degree in co-relation 17457. Up to 1610 conditions per place. [2024-06-04 16:30:23,450 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 238 selfloop transitions, 80 changer transitions 0/322 dead transitions. [2024-06-04 16:30:23,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 322 transitions, 4976 flow [2024-06-04 16:30:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:30:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:30:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 250 transitions. [2024-06-04 16:30:23,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3654970760233918 [2024-06-04 16:30:23,451 INFO L175 Difference]: Start difference. First operand has 386 places, 272 transitions, 4024 flow. Second operand 18 states and 250 transitions. [2024-06-04 16:30:23,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 322 transitions, 4976 flow [2024-06-04 16:30:23,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 322 transitions, 4788 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-04 16:30:23,956 INFO L231 Difference]: Finished difference. Result has 389 places, 272 transitions, 4000 flow [2024-06-04 16:30:23,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4000, PETRI_PLACES=389, PETRI_TRANSITIONS=272} [2024-06-04 16:30:23,956 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 350 predicate places. [2024-06-04 16:30:23,957 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 272 transitions, 4000 flow [2024-06-04 16:30:23,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:23,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:23,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:23,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 16:30:23,957 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:23,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:23,958 INFO L85 PathProgramCache]: Analyzing trace with hash -552411393, now seen corresponding path program 6 times [2024-06-04 16:30:23,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:23,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031225218] [2024-06-04 16:30:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:23,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:24,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:24,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031225218] [2024-06-04 16:30:24,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031225218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:24,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:24,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:24,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746455565] [2024-06-04 16:30:24,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:24,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:24,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:24,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:24,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:24,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 272 transitions, 4000 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:24,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:24,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:24,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:25,119 INFO L124 PetriNetUnfolderBase]: 1289/2523 cut-off events. [2024-06-04 16:30:25,120 INFO L125 PetriNetUnfolderBase]: For 209088/209142 co-relation queries the response was YES. [2024-06-04 16:30:25,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18320 conditions, 2523 events. 1289/2523 cut-off events. For 209088/209142 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 15906 event pairs, 358 based on Foata normal form. 9/2525 useless extension candidates. Maximal degree in co-relation 18168. Up to 1622 conditions per place. [2024-06-04 16:30:25,141 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 238 selfloop transitions, 86 changer transitions 0/328 dead transitions. [2024-06-04 16:30:25,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 328 transitions, 5189 flow [2024-06-04 16:30:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-04 16:30:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-04 16:30:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 258 transitions. [2024-06-04 16:30:25,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573407202216066 [2024-06-04 16:30:25,142 INFO L175 Difference]: Start difference. First operand has 389 places, 272 transitions, 4000 flow. Second operand 19 states and 258 transitions. [2024-06-04 16:30:25,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 328 transitions, 5189 flow [2024-06-04 16:30:25,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 328 transitions, 4886 flow, removed 14 selfloop flow, removed 19 redundant places. [2024-06-04 16:30:25,739 INFO L231 Difference]: Finished difference. Result has 389 places, 276 transitions, 3958 flow [2024-06-04 16:30:25,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3714, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3958, PETRI_PLACES=389, PETRI_TRANSITIONS=276} [2024-06-04 16:30:25,740 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 350 predicate places. [2024-06-04 16:30:25,740 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 276 transitions, 3958 flow [2024-06-04 16:30:25,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:25,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:25,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:25,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 16:30:25,740 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:25,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2126868383, now seen corresponding path program 7 times [2024-06-04 16:30:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:25,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696666512] [2024-06-04 16:30:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:26,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:26,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696666512] [2024-06-04 16:30:26,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696666512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:26,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:26,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:26,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167650777] [2024-06-04 16:30:26,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:26,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:26,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:26,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:26,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:26,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 276 transitions, 3958 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:26,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:26,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:26,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:26,754 INFO L124 PetriNetUnfolderBase]: 1301/2547 cut-off events. [2024-06-04 16:30:26,754 INFO L125 PetriNetUnfolderBase]: For 213048/213096 co-relation queries the response was YES. [2024-06-04 16:30:26,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18260 conditions, 2547 events. 1301/2547 cut-off events. For 213048/213096 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16103 event pairs, 377 based on Foata normal form. 9/2549 useless extension candidates. Maximal degree in co-relation 18109. Up to 1626 conditions per place. [2024-06-04 16:30:26,780 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 231 selfloop transitions, 85 changer transitions 0/320 dead transitions. [2024-06-04 16:30:26,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 320 transitions, 4909 flow [2024-06-04 16:30:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:30:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:30:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 223 transitions. [2024-06-04 16:30:26,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3667763157894737 [2024-06-04 16:30:26,781 INFO L175 Difference]: Start difference. First operand has 389 places, 276 transitions, 3958 flow. Second operand 16 states and 223 transitions. [2024-06-04 16:30:26,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 320 transitions, 4909 flow [2024-06-04 16:30:27,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 320 transitions, 4775 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 16:30:27,506 INFO L231 Difference]: Finished difference. Result has 393 places, 277 transitions, 4019 flow [2024-06-04 16:30:27,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3825, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4019, PETRI_PLACES=393, PETRI_TRANSITIONS=277} [2024-06-04 16:30:27,506 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 354 predicate places. [2024-06-04 16:30:27,506 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 277 transitions, 4019 flow [2024-06-04 16:30:27,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:27,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:27,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:27,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 16:30:27,507 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:27,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2112078593, now seen corresponding path program 8 times [2024-06-04 16:30:27,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:27,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265015561] [2024-06-04 16:30:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:27,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265015561] [2024-06-04 16:30:27,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265015561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:27,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:27,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:27,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842024291] [2024-06-04 16:30:27,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:27,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:27,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:27,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:27,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:27,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:27,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 277 transitions, 4019 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:27,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:27,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:27,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:28,622 INFO L124 PetriNetUnfolderBase]: 1313/2571 cut-off events. [2024-06-04 16:30:28,622 INFO L125 PetriNetUnfolderBase]: For 219566/219614 co-relation queries the response was YES. [2024-06-04 16:30:28,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18489 conditions, 2571 events. 1313/2571 cut-off events. For 219566/219614 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16302 event pairs, 371 based on Foata normal form. 9/2573 useless extension candidates. Maximal degree in co-relation 18337. Up to 1630 conditions per place. [2024-06-04 16:30:28,645 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 244 selfloop transitions, 82 changer transitions 0/330 dead transitions. [2024-06-04 16:30:28,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 330 transitions, 5161 flow [2024-06-04 16:30:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:30:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:30:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 246 transitions. [2024-06-04 16:30:28,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38080495356037153 [2024-06-04 16:30:28,646 INFO L175 Difference]: Start difference. First operand has 393 places, 277 transitions, 4019 flow. Second operand 17 states and 246 transitions. [2024-06-04 16:30:28,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 330 transitions, 5161 flow [2024-06-04 16:30:29,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 330 transitions, 5003 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 16:30:29,413 INFO L231 Difference]: Finished difference. Result has 397 places, 278 transitions, 4051 flow [2024-06-04 16:30:29,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3862, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4051, PETRI_PLACES=397, PETRI_TRANSITIONS=278} [2024-06-04 16:30:29,413 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 358 predicate places. [2024-06-04 16:30:29,413 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 278 transitions, 4051 flow [2024-06-04 16:30:29,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:29,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:29,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:29,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 16:30:29,414 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:29,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2112063713, now seen corresponding path program 9 times [2024-06-04 16:30:29,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:29,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132974262] [2024-06-04 16:30:29,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:29,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:29,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:29,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132974262] [2024-06-04 16:30:29,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132974262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:29,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:29,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:29,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945872355] [2024-06-04 16:30:29,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:29,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:29,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:29,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:29,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 278 transitions, 4051 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:29,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:29,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:29,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:30,460 INFO L124 PetriNetUnfolderBase]: 1304/2556 cut-off events. [2024-06-04 16:30:30,460 INFO L125 PetriNetUnfolderBase]: For 210723/210774 co-relation queries the response was YES. [2024-06-04 16:30:30,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18122 conditions, 2556 events. 1304/2556 cut-off events. For 210723/210774 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16185 event pairs, 370 based on Foata normal form. 9/2558 useless extension candidates. Maximal degree in co-relation 17969. Up to 1628 conditions per place. [2024-06-04 16:30:30,488 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 249 selfloop transitions, 83 changer transitions 0/336 dead transitions. [2024-06-04 16:30:30,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 336 transitions, 5067 flow [2024-06-04 16:30:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-04 16:30:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-04 16:30:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 269 transitions. [2024-06-04 16:30:30,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37257617728531855 [2024-06-04 16:30:30,489 INFO L175 Difference]: Start difference. First operand has 397 places, 278 transitions, 4051 flow. Second operand 19 states and 269 transitions. [2024-06-04 16:30:30,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 336 transitions, 5067 flow [2024-06-04 16:30:31,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 336 transitions, 4869 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-04 16:30:31,242 INFO L231 Difference]: Finished difference. Result has 401 places, 278 transitions, 4023 flow [2024-06-04 16:30:31,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4023, PETRI_PLACES=401, PETRI_TRANSITIONS=278} [2024-06-04 16:30:31,243 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 362 predicate places. [2024-06-04 16:30:31,243 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 278 transitions, 4023 flow [2024-06-04 16:30:31,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:31,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:31,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:31,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 16:30:31,243 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:31,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2126378273, now seen corresponding path program 10 times [2024-06-04 16:30:31,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332293730] [2024-06-04 16:30:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:31,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:31,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:31,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332293730] [2024-06-04 16:30:31,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332293730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:31,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:31,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:31,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348467238] [2024-06-04 16:30:31,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:31,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:31,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:31,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:31,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 278 transitions, 4023 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:31,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:31,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:31,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:32,284 INFO L124 PetriNetUnfolderBase]: 1295/2541 cut-off events. [2024-06-04 16:30:32,284 INFO L125 PetriNetUnfolderBase]: For 200498/200547 co-relation queries the response was YES. [2024-06-04 16:30:32,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17668 conditions, 2541 events. 1295/2541 cut-off events. For 200498/200547 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16138 event pairs, 357 based on Foata normal form. 9/2543 useless extension candidates. Maximal degree in co-relation 17515. Up to 1626 conditions per place. [2024-06-04 16:30:32,306 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 239 selfloop transitions, 86 changer transitions 0/329 dead transitions. [2024-06-04 16:30:32,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 329 transitions, 4863 flow [2024-06-04 16:30:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:30:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:30:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 251 transitions. [2024-06-04 16:30:32,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3669590643274854 [2024-06-04 16:30:32,308 INFO L175 Difference]: Start difference. First operand has 401 places, 278 transitions, 4023 flow. Second operand 18 states and 251 transitions. [2024-06-04 16:30:32,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 329 transitions, 4863 flow [2024-06-04 16:30:32,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 329 transitions, 4683 flow, removed 3 selfloop flow, removed 18 redundant places. [2024-06-04 16:30:32,929 INFO L231 Difference]: Finished difference. Result has 401 places, 278 transitions, 4019 flow [2024-06-04 16:30:32,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3843, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4019, PETRI_PLACES=401, PETRI_TRANSITIONS=278} [2024-06-04 16:30:32,930 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 362 predicate places. [2024-06-04 16:30:32,930 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 278 transitions, 4019 flow [2024-06-04 16:30:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:32,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:32,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:32,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 16:30:32,930 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:32,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:32,931 INFO L85 PathProgramCache]: Analyzing trace with hash 776179899, now seen corresponding path program 11 times [2024-06-04 16:30:32,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:32,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258774286] [2024-06-04 16:30:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:32,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:33,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:33,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258774286] [2024-06-04 16:30:33,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258774286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:33,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:33,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:33,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851440211] [2024-06-04 16:30:33,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:33,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:33,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:33,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:33,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:33,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:33,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 278 transitions, 4019 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:33,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:33,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:33,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:34,021 INFO L124 PetriNetUnfolderBase]: 1379/2697 cut-off events. [2024-06-04 16:30:34,021 INFO L125 PetriNetUnfolderBase]: For 255169/255218 co-relation queries the response was YES. [2024-06-04 16:30:34,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19178 conditions, 2697 events. 1379/2697 cut-off events. For 255169/255218 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17397 event pairs, 362 based on Foata normal form. 15/2705 useless extension candidates. Maximal degree in co-relation 19023. Up to 1152 conditions per place. [2024-06-04 16:30:34,050 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 194 selfloop transitions, 133 changer transitions 0/331 dead transitions. [2024-06-04 16:30:34,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 331 transitions, 5248 flow [2024-06-04 16:30:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:30:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:30:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 223 transitions. [2024-06-04 16:30:34,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3667763157894737 [2024-06-04 16:30:34,051 INFO L175 Difference]: Start difference. First operand has 401 places, 278 transitions, 4019 flow. Second operand 16 states and 223 transitions. [2024-06-04 16:30:34,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 331 transitions, 5248 flow [2024-06-04 16:30:34,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 331 transitions, 5056 flow, removed 0 selfloop flow, removed 18 redundant places. [2024-06-04 16:30:34,781 INFO L231 Difference]: Finished difference. Result has 399 places, 286 transitions, 4235 flow [2024-06-04 16:30:34,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4235, PETRI_PLACES=399, PETRI_TRANSITIONS=286} [2024-06-04 16:30:34,781 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 360 predicate places. [2024-06-04 16:30:34,781 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 286 transitions, 4235 flow [2024-06-04 16:30:34,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:34,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:34,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:34,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 16:30:34,782 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:34,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:34,782 INFO L85 PathProgramCache]: Analyzing trace with hash 775689789, now seen corresponding path program 12 times [2024-06-04 16:30:34,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:34,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991017053] [2024-06-04 16:30:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:34,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:35,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:35,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991017053] [2024-06-04 16:30:35,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991017053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:35,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:35,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:35,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564090877] [2024-06-04 16:30:35,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:35,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:35,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:35,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:35,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:35,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:35,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 286 transitions, 4235 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:35,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:35,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:35,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:35,839 INFO L124 PetriNetUnfolderBase]: 1403/2745 cut-off events. [2024-06-04 16:30:35,839 INFO L125 PetriNetUnfolderBase]: For 262428/262477 co-relation queries the response was YES. [2024-06-04 16:30:35,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19557 conditions, 2745 events. 1403/2745 cut-off events. For 262428/262477 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17776 event pairs, 342 based on Foata normal form. 15/2753 useless extension candidates. Maximal degree in co-relation 19401. Up to 1160 conditions per place. [2024-06-04 16:30:35,867 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 196 selfloop transitions, 135 changer transitions 0/335 dead transitions. [2024-06-04 16:30:35,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 335 transitions, 5392 flow [2024-06-04 16:30:35,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:30:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:30:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 226 transitions. [2024-06-04 16:30:35,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717105263157895 [2024-06-04 16:30:35,868 INFO L175 Difference]: Start difference. First operand has 399 places, 286 transitions, 4235 flow. Second operand 16 states and 226 transitions. [2024-06-04 16:30:35,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 335 transitions, 5392 flow [2024-06-04 16:30:36,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 335 transitions, 5177 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-04 16:30:36,713 INFO L231 Difference]: Finished difference. Result has 405 places, 288 transitions, 4340 flow [2024-06-04 16:30:36,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4030, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4340, PETRI_PLACES=405, PETRI_TRANSITIONS=288} [2024-06-04 16:30:36,714 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 366 predicate places. [2024-06-04 16:30:36,714 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 288 transitions, 4340 flow [2024-06-04 16:30:36,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:36,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:36,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:36,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 16:30:36,714 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:36,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:36,715 INFO L85 PathProgramCache]: Analyzing trace with hash 304694079, now seen corresponding path program 13 times [2024-06-04 16:30:36,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:36,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417049583] [2024-06-04 16:30:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:36,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:37,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:37,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:37,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417049583] [2024-06-04 16:30:37,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417049583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:37,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:37,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:37,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064266190] [2024-06-04 16:30:37,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:37,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:37,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:37,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:37,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 288 transitions, 4340 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:37,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:37,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:37,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:37,862 INFO L124 PetriNetUnfolderBase]: 1529/2979 cut-off events. [2024-06-04 16:30:37,862 INFO L125 PetriNetUnfolderBase]: For 338145/338197 co-relation queries the response was YES. [2024-06-04 16:30:37,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22428 conditions, 2979 events. 1529/2979 cut-off events. For 338145/338197 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 19662 event pairs, 373 based on Foata normal form. 15/2987 useless extension candidates. Maximal degree in co-relation 22271. Up to 1196 conditions per place. [2024-06-04 16:30:37,896 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 220 selfloop transitions, 139 changer transitions 0/363 dead transitions. [2024-06-04 16:30:37,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 363 transitions, 6253 flow [2024-06-04 16:30:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-04 16:30:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-04 16:30:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 280 transitions. [2024-06-04 16:30:37,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684210526315789 [2024-06-04 16:30:37,897 INFO L175 Difference]: Start difference. First operand has 405 places, 288 transitions, 4340 flow. Second operand 20 states and 280 transitions. [2024-06-04 16:30:37,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 363 transitions, 6253 flow [2024-06-04 16:30:38,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 363 transitions, 5953 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-04 16:30:38,657 INFO L231 Difference]: Finished difference. Result has 411 places, 300 transitions, 4575 flow [2024-06-04 16:30:38,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4064, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4575, PETRI_PLACES=411, PETRI_TRANSITIONS=300} [2024-06-04 16:30:38,658 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 372 predicate places. [2024-06-04 16:30:38,658 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 300 transitions, 4575 flow [2024-06-04 16:30:38,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:38,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:38,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:38,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 16:30:38,658 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:38,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:38,659 INFO L85 PathProgramCache]: Analyzing trace with hash 304679199, now seen corresponding path program 14 times [2024-06-04 16:30:38,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:38,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644671768] [2024-06-04 16:30:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:38,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:39,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:39,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644671768] [2024-06-04 16:30:39,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644671768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:39,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:39,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864132113] [2024-06-04 16:30:39,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:39,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:39,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:39,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:39,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 300 transitions, 4575 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:39,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:39,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:39,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:39,799 INFO L124 PetriNetUnfolderBase]: 1511/2949 cut-off events. [2024-06-04 16:30:39,799 INFO L125 PetriNetUnfolderBase]: For 312438/312490 co-relation queries the response was YES. [2024-06-04 16:30:39,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21499 conditions, 2949 events. 1511/2949 cut-off events. For 312438/312490 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 19478 event pairs, 367 based on Foata normal form. 15/2957 useless extension candidates. Maximal degree in co-relation 21341. Up to 1192 conditions per place. [2024-06-04 16:30:39,831 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 214 selfloop transitions, 143 changer transitions 0/361 dead transitions. [2024-06-04 16:30:39,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 361 transitions, 6085 flow [2024-06-04 16:30:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-04 16:30:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-04 16:30:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 284 transitions. [2024-06-04 16:30:39,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3558897243107769 [2024-06-04 16:30:39,833 INFO L175 Difference]: Start difference. First operand has 411 places, 300 transitions, 4575 flow. Second operand 21 states and 284 transitions. [2024-06-04 16:30:39,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 361 transitions, 6085 flow [2024-06-04 16:30:40,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 361 transitions, 5726 flow, removed 40 selfloop flow, removed 13 redundant places. [2024-06-04 16:30:40,415 INFO L231 Difference]: Finished difference. Result has 419 places, 300 transitions, 4508 flow [2024-06-04 16:30:40,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4216, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4508, PETRI_PLACES=419, PETRI_TRANSITIONS=300} [2024-06-04 16:30:40,416 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 380 predicate places. [2024-06-04 16:30:40,416 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 300 transitions, 4508 flow [2024-06-04 16:30:40,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:40,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:40,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:40,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 16:30:40,417 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:40,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:40,418 INFO L85 PathProgramCache]: Analyzing trace with hash 775674909, now seen corresponding path program 15 times [2024-06-04 16:30:40,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:40,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365141161] [2024-06-04 16:30:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:40,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:40,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365141161] [2024-06-04 16:30:40,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365141161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:40,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:40,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:40,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997429908] [2024-06-04 16:30:40,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:40,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:40,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:40,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:40,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:40,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:40,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 300 transitions, 4508 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:40,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:40,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:40,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:41,533 INFO L124 PetriNetUnfolderBase]: 1493/2919 cut-off events. [2024-06-04 16:30:41,533 INFO L125 PetriNetUnfolderBase]: For 284099/284151 co-relation queries the response was YES. [2024-06-04 16:30:41,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20426 conditions, 2919 events. 1493/2919 cut-off events. For 284099/284151 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 19324 event pairs, 373 based on Foata normal form. 15/2927 useless extension candidates. Maximal degree in co-relation 20267. Up to 1188 conditions per place. [2024-06-04 16:30:41,565 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 188 selfloop transitions, 153 changer transitions 0/345 dead transitions. [2024-06-04 16:30:41,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 345 transitions, 5494 flow [2024-06-04 16:30:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:30:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:30:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 230 transitions. [2024-06-04 16:30:41,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560371517027864 [2024-06-04 16:30:41,566 INFO L175 Difference]: Start difference. First operand has 419 places, 300 transitions, 4508 flow. Second operand 17 states and 230 transitions. [2024-06-04 16:30:41,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 345 transitions, 5494 flow [2024-06-04 16:30:42,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 345 transitions, 5198 flow, removed 6 selfloop flow, removed 19 redundant places. [2024-06-04 16:30:42,452 INFO L231 Difference]: Finished difference. Result has 417 places, 300 transitions, 4524 flow [2024-06-04 16:30:42,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4212, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4524, PETRI_PLACES=417, PETRI_TRANSITIONS=300} [2024-06-04 16:30:42,452 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 378 predicate places. [2024-06-04 16:30:42,452 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 300 transitions, 4524 flow [2024-06-04 16:30:42,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:42,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:42,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:42,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 16:30:42,453 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:42,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:42,453 INFO L85 PathProgramCache]: Analyzing trace with hash 792267039, now seen corresponding path program 16 times [2024-06-04 16:30:42,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:42,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403638778] [2024-06-04 16:30:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:42,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:42,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:42,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403638778] [2024-06-04 16:30:42,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403638778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:42,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:42,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:30:42,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022878663] [2024-06-04 16:30:42,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:42,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:30:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:30:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:30:42,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:42,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 300 transitions, 4524 flow. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:42,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:42,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:42,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:43,391 INFO L124 PetriNetUnfolderBase]: 1475/2889 cut-off events. [2024-06-04 16:30:43,392 INFO L125 PetriNetUnfolderBase]: For 253794/253846 co-relation queries the response was YES. [2024-06-04 16:30:43,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19515 conditions, 2889 events. 1475/2889 cut-off events. For 253794/253846 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18982 event pairs, 343 based on Foata normal form. 15/2897 useless extension candidates. Maximal degree in co-relation 19355. Up to 1184 conditions per place. [2024-06-04 16:30:43,421 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 191 selfloop transitions, 137 changer transitions 0/332 dead transitions. [2024-06-04 16:30:43,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 332 transitions, 5448 flow [2024-06-04 16:30:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:30:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:30:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-04 16:30:43,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995215311004783 [2024-06-04 16:30:43,422 INFO L175 Difference]: Start difference. First operand has 417 places, 300 transitions, 4524 flow. Second operand 11 states and 163 transitions. [2024-06-04 16:30:43,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 332 transitions, 5448 flow [2024-06-04 16:30:44,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 332 transitions, 5086 flow, removed 0 selfloop flow, removed 17 redundant places. [2024-06-04 16:30:44,221 INFO L231 Difference]: Finished difference. Result has 411 places, 300 transitions, 4444 flow [2024-06-04 16:30:44,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4162, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4444, PETRI_PLACES=411, PETRI_TRANSITIONS=300} [2024-06-04 16:30:44,222 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 372 predicate places. [2024-06-04 16:30:44,222 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 300 transitions, 4444 flow [2024-06-04 16:30:44,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:44,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:44,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:44,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 16:30:44,222 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:44,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1320286337, now seen corresponding path program 17 times [2024-06-04 16:30:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:44,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167298321] [2024-06-04 16:30:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:44,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:44,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167298321] [2024-06-04 16:30:44,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167298321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:44,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:44,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:44,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164536812] [2024-06-04 16:30:44,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:44,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:44,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:44,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:44,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:44,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 300 transitions, 4444 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:44,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:44,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:44,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:45,362 INFO L124 PetriNetUnfolderBase]: 1457/2859 cut-off events. [2024-06-04 16:30:45,362 INFO L125 PetriNetUnfolderBase]: For 223529/223584 co-relation queries the response was YES. [2024-06-04 16:30:45,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18474 conditions, 2859 events. 1457/2859 cut-off events. For 223529/223584 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 18881 event pairs, 353 based on Foata normal form. 15/2867 useless extension candidates. Maximal degree in co-relation 18313. Up to 1180 conditions per place. [2024-06-04 16:30:45,391 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 207 selfloop transitions, 139 changer transitions 0/350 dead transitions. [2024-06-04 16:30:45,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 350 transitions, 5458 flow [2024-06-04 16:30:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:30:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:30:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 247 transitions. [2024-06-04 16:30:45,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 16:30:45,393 INFO L175 Difference]: Start difference. First operand has 411 places, 300 transitions, 4444 flow. Second operand 18 states and 247 transitions. [2024-06-04 16:30:45,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 350 transitions, 5458 flow [2024-06-04 16:30:46,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 350 transitions, 4932 flow, removed 16 selfloop flow, removed 14 redundant places. [2024-06-04 16:30:46,159 INFO L231 Difference]: Finished difference. Result has 415 places, 300 transitions, 4202 flow [2024-06-04 16:30:46,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3918, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4202, PETRI_PLACES=415, PETRI_TRANSITIONS=300} [2024-06-04 16:30:46,160 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 376 predicate places. [2024-06-04 16:30:46,160 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 300 transitions, 4202 flow [2024-06-04 16:30:46,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:46,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:46,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:46,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 16:30:46,161 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:46,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash 290379519, now seen corresponding path program 18 times [2024-06-04 16:30:46,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:46,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779465064] [2024-06-04 16:30:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:46,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:46,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:46,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779465064] [2024-06-04 16:30:46,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779465064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:46,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:46,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107946207] [2024-06-04 16:30:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:46,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:46,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:46,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:46,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 300 transitions, 4202 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:46,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:46,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:46,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:47,227 INFO L124 PetriNetUnfolderBase]: 1511/2961 cut-off events. [2024-06-04 16:30:47,228 INFO L125 PetriNetUnfolderBase]: For 245782/245831 co-relation queries the response was YES. [2024-06-04 16:30:47,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18829 conditions, 2961 events. 1511/2961 cut-off events. For 245782/245831 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 19724 event pairs, 358 based on Foata normal form. 15/2969 useless extension candidates. Maximal degree in co-relation 18669. Up to 1196 conditions per place. [2024-06-04 16:30:47,256 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 210 selfloop transitions, 144 changer transitions 0/358 dead transitions. [2024-06-04 16:30:47,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 358 transitions, 5480 flow [2024-06-04 16:30:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:30:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:30:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 242 transitions. [2024-06-04 16:30:47,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746130030959752 [2024-06-04 16:30:47,258 INFO L175 Difference]: Start difference. First operand has 415 places, 300 transitions, 4202 flow. Second operand 17 states and 242 transitions. [2024-06-04 16:30:47,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 358 transitions, 5480 flow [2024-06-04 16:30:48,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 358 transitions, 5184 flow, removed 0 selfloop flow, removed 18 redundant places. [2024-06-04 16:30:48,089 INFO L231 Difference]: Finished difference. Result has 414 places, 305 transitions, 4274 flow [2024-06-04 16:30:48,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3916, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4274, PETRI_PLACES=414, PETRI_TRANSITIONS=305} [2024-06-04 16:30:48,089 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 375 predicate places. [2024-06-04 16:30:48,089 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 305 transitions, 4274 flow [2024-06-04 16:30:48,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:48,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:48,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:48,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 16:30:48,090 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:48,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:48,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1785643211, now seen corresponding path program 19 times [2024-06-04 16:30:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:48,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330253488] [2024-06-04 16:30:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:48,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330253488] [2024-06-04 16:30:48,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330253488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:48,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:48,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:48,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938392368] [2024-06-04 16:30:48,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:48,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:48,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:48,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:48,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:48,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:48,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 305 transitions, 4274 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:48,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:48,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:48,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:49,115 INFO L124 PetriNetUnfolderBase]: 1493/2931 cut-off events. [2024-06-04 16:30:49,115 INFO L125 PetriNetUnfolderBase]: For 213067/213116 co-relation queries the response was YES. [2024-06-04 16:30:49,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17832 conditions, 2931 events. 1493/2931 cut-off events. For 213067/213116 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 19508 event pairs, 350 based on Foata normal form. 15/2939 useless extension candidates. Maximal degree in co-relation 17671. Up to 1192 conditions per place. [2024-06-04 16:30:49,144 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 204 selfloop transitions, 142 changer transitions 0/350 dead transitions. [2024-06-04 16:30:49,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 350 transitions, 5282 flow [2024-06-04 16:30:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 16:30:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 16:30:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 217 transitions. [2024-06-04 16:30:49,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38070175438596493 [2024-06-04 16:30:49,145 INFO L175 Difference]: Start difference. First operand has 414 places, 305 transitions, 4274 flow. Second operand 15 states and 217 transitions. [2024-06-04 16:30:49,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 350 transitions, 5282 flow [2024-06-04 16:30:49,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 350 transitions, 4990 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-04 16:30:49,944 INFO L231 Difference]: Finished difference. Result has 417 places, 305 transitions, 4272 flow [2024-06-04 16:30:49,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4272, PETRI_PLACES=417, PETRI_TRANSITIONS=305} [2024-06-04 16:30:49,945 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 378 predicate places. [2024-06-04 16:30:49,945 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 305 transitions, 4272 flow [2024-06-04 16:30:49,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:49,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:49,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:49,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 16:30:49,945 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:49,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:49,945 INFO L85 PathProgramCache]: Analyzing trace with hash -314783651, now seen corresponding path program 20 times [2024-06-04 16:30:49,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:49,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437356305] [2024-06-04 16:30:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:49,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:50,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:50,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437356305] [2024-06-04 16:30:50,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437356305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:50,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:50,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:50,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837075443] [2024-06-04 16:30:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:50,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:50,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:50,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:50,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:50,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:50,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 305 transitions, 4272 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:50,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:50,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:50,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:51,007 INFO L124 PetriNetUnfolderBase]: 1484/2916 cut-off events. [2024-06-04 16:30:51,007 INFO L125 PetriNetUnfolderBase]: For 178316/178365 co-relation queries the response was YES. [2024-06-04 16:30:51,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17329 conditions, 2916 events. 1484/2916 cut-off events. For 178316/178365 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 19356 event pairs, 323 based on Foata normal form. 9/2918 useless extension candidates. Maximal degree in co-relation 17167. Up to 1190 conditions per place. [2024-06-04 16:30:51,038 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 185 selfloop transitions, 159 changer transitions 0/348 dead transitions. [2024-06-04 16:30:51,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 348 transitions, 5108 flow [2024-06-04 16:30:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:30:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:30:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 221 transitions. [2024-06-04 16:30:51,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36348684210526316 [2024-06-04 16:30:51,039 INFO L175 Difference]: Start difference. First operand has 417 places, 305 transitions, 4272 flow. Second operand 16 states and 221 transitions. [2024-06-04 16:30:51,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 348 transitions, 5108 flow [2024-06-04 16:30:51,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 348 transitions, 4818 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-04 16:30:51,728 INFO L231 Difference]: Finished difference. Result has 419 places, 305 transitions, 4304 flow [2024-06-04 16:30:51,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4304, PETRI_PLACES=419, PETRI_TRANSITIONS=305} [2024-06-04 16:30:51,728 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 380 predicate places. [2024-06-04 16:30:51,728 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 305 transitions, 4304 flow [2024-06-04 16:30:51,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:51,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:51,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:51,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 16:30:51,729 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:51,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2090334671, now seen corresponding path program 1 times [2024-06-04 16:30:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:51,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752689661] [2024-06-04 16:30:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752689661] [2024-06-04 16:30:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752689661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:51,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:51,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:30:51,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41725063] [2024-06-04 16:30:51,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:51,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:30:51,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:30:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:30:51,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 16:30:51,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 305 transitions, 4304 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:51,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:51,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 16:30:51,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:52,218 INFO L124 PetriNetUnfolderBase]: 970/2259 cut-off events. [2024-06-04 16:30:52,219 INFO L125 PetriNetUnfolderBase]: For 71892/71945 co-relation queries the response was YES. [2024-06-04 16:30:52,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12104 conditions, 2259 events. 970/2259 cut-off events. For 71892/71945 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 16795 event pairs, 261 based on Foata normal form. 34/2243 useless extension candidates. Maximal degree in co-relation 11941. Up to 747 conditions per place. [2024-06-04 16:30:52,243 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 66 selfloop transitions, 99 changer transitions 0/307 dead transitions. [2024-06-04 16:30:52,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 307 transitions, 4461 flow [2024-06-04 16:30:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:30:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:30:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-04 16:30:52,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5672514619883041 [2024-06-04 16:30:52,244 INFO L175 Difference]: Start difference. First operand has 419 places, 305 transitions, 4304 flow. Second operand 9 states and 194 transitions. [2024-06-04 16:30:52,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 307 transitions, 4461 flow [2024-06-04 16:30:52,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 307 transitions, 3911 flow, removed 2 selfloop flow, removed 22 redundant places. [2024-06-04 16:30:52,608 INFO L231 Difference]: Finished difference. Result has 406 places, 282 transitions, 3693 flow [2024-06-04 16:30:52,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3693, PETRI_PLACES=406, PETRI_TRANSITIONS=282} [2024-06-04 16:30:52,609 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 367 predicate places. [2024-06-04 16:30:52,609 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 282 transitions, 3693 flow [2024-06-04 16:30:52,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:52,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:52,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:52,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 16:30:52,609 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:52,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash -493715352, now seen corresponding path program 1 times [2024-06-04 16:30:52,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:52,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142065131] [2024-06-04 16:30:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:52,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:53,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:53,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142065131] [2024-06-04 16:30:53,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142065131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:53,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:53,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:30:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351385310] [2024-06-04 16:30:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:30:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:30:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:30:53,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2024-06-04 16:30:53,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 282 transitions, 3693 flow. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:53,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:53,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2024-06-04 16:30:53,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:53,911 INFO L124 PetriNetUnfolderBase]: 1451/2943 cut-off events. [2024-06-04 16:30:53,911 INFO L125 PetriNetUnfolderBase]: For 183109/183112 co-relation queries the response was YES. [2024-06-04 16:30:53,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17008 conditions, 2943 events. 1451/2943 cut-off events. For 183109/183112 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 20018 event pairs, 350 based on Foata normal form. 4/2938 useless extension candidates. Maximal degree in co-relation 16846. Up to 1370 conditions per place. [2024-06-04 16:30:53,939 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 272 selfloop transitions, 68 changer transitions 0/344 dead transitions. [2024-06-04 16:30:53,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 344 transitions, 5371 flow [2024-06-04 16:30:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 16:30:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 16:30:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 195 transitions. [2024-06-04 16:30:53,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34210526315789475 [2024-06-04 16:30:53,941 INFO L175 Difference]: Start difference. First operand has 406 places, 282 transitions, 3693 flow. Second operand 15 states and 195 transitions. [2024-06-04 16:30:53,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 344 transitions, 5371 flow [2024-06-04 16:30:54,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 344 transitions, 5213 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 16:30:54,545 INFO L231 Difference]: Finished difference. Result has 419 places, 291 transitions, 3814 flow [2024-06-04 16:30:54,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3539, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3814, PETRI_PLACES=419, PETRI_TRANSITIONS=291} [2024-06-04 16:30:54,545 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 380 predicate places. [2024-06-04 16:30:54,545 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 291 transitions, 3814 flow [2024-06-04 16:30:54,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:54,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:54,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 16:30:54,546 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:54,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:54,546 INFO L85 PathProgramCache]: Analyzing trace with hash 22127244, now seen corresponding path program 2 times [2024-06-04 16:30:54,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:54,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268372180] [2024-06-04 16:30:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:54,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:55,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:55,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268372180] [2024-06-04 16:30:55,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268372180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:55,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:55,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:30:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084929249] [2024-06-04 16:30:55,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:55,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:30:55,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:30:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:30:55,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2024-06-04 16:30:55,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 291 transitions, 3814 flow. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:55,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:55,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2024-06-04 16:30:55,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:55,930 INFO L124 PetriNetUnfolderBase]: 1879/3833 cut-off events. [2024-06-04 16:30:55,930 INFO L125 PetriNetUnfolderBase]: For 286335/286355 co-relation queries the response was YES. [2024-06-04 16:30:55,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24007 conditions, 3833 events. 1879/3833 cut-off events. For 286335/286355 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 27652 event pairs, 609 based on Foata normal form. 9/3829 useless extension candidates. Maximal degree in co-relation 23839. Up to 2106 conditions per place. [2024-06-04 16:30:55,977 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 322 selfloop transitions, 70 changer transitions 0/396 dead transitions. [2024-06-04 16:30:55,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 396 transitions, 6195 flow [2024-06-04 16:30:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:30:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:30:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 171 transitions. [2024-06-04 16:30:55,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 16:30:55,979 INFO L175 Difference]: Start difference. First operand has 419 places, 291 transitions, 3814 flow. Second operand 12 states and 171 transitions. [2024-06-04 16:30:55,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 396 transitions, 6195 flow [2024-06-04 16:30:57,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 396 transitions, 5966 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-04 16:30:57,101 INFO L231 Difference]: Finished difference. Result has 432 places, 318 transitions, 4236 flow [2024-06-04 16:30:57,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3650, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4236, PETRI_PLACES=432, PETRI_TRANSITIONS=318} [2024-06-04 16:30:57,101 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 393 predicate places. [2024-06-04 16:30:57,102 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 318 transitions, 4236 flow [2024-06-04 16:30:57,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:30:57,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:57,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:57,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 16:30:57,102 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:57,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:57,103 INFO L85 PathProgramCache]: Analyzing trace with hash -299610582, now seen corresponding path program 3 times [2024-06-04 16:30:57,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:57,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472707608] [2024-06-04 16:30:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:57,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:57,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:57,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472707608] [2024-06-04 16:30:57,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472707608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:57,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:57,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:30:57,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467192642] [2024-06-04 16:30:57,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:57,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:30:57,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:30:57,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:30:57,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:57,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 318 transitions, 4236 flow. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:30:57,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:57,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:57,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:30:58,346 INFO L124 PetriNetUnfolderBase]: 1881/3837 cut-off events. [2024-06-04 16:30:58,346 INFO L125 PetriNetUnfolderBase]: For 293081/293091 co-relation queries the response was YES. [2024-06-04 16:30:58,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24014 conditions, 3837 events. 1881/3837 cut-off events. For 293081/293091 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 27643 event pairs, 481 based on Foata normal form. 4/3828 useless extension candidates. Maximal degree in co-relation 23840. Up to 1370 conditions per place. [2024-06-04 16:30:58,389 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 257 selfloop transitions, 96 changer transitions 0/357 dead transitions. [2024-06-04 16:30:58,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 357 transitions, 5609 flow [2024-06-04 16:30:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 16:30:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 16:30:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 186 transitions. [2024-06-04 16:30:58,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3765182186234818 [2024-06-04 16:30:58,391 INFO L175 Difference]: Start difference. First operand has 432 places, 318 transitions, 4236 flow. Second operand 13 states and 186 transitions. [2024-06-04 16:30:58,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 357 transitions, 5609 flow [2024-06-04 16:30:59,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 357 transitions, 5487 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-04 16:30:59,407 INFO L231 Difference]: Finished difference. Result has 443 places, 320 transitions, 4368 flow [2024-06-04 16:30:59,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4117, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4368, PETRI_PLACES=443, PETRI_TRANSITIONS=320} [2024-06-04 16:30:59,407 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 404 predicate places. [2024-06-04 16:30:59,407 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 320 transitions, 4368 flow [2024-06-04 16:30:59,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:30:59,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:30:59,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:30:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 16:30:59,408 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:30:59,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:30:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1604724260, now seen corresponding path program 4 times [2024-06-04 16:30:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:30:59,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184571100] [2024-06-04 16:30:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:30:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:30:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:30:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:30:59,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:30:59,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184571100] [2024-06-04 16:30:59,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184571100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:30:59,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:30:59,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:30:59,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132100970] [2024-06-04 16:30:59,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:30:59,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:30:59,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:30:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:30:59,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:30:59,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:30:59,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 320 transitions, 4368 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:30:59,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:30:59,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:30:59,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:00,947 INFO L124 PetriNetUnfolderBase]: 2033/4139 cut-off events. [2024-06-04 16:31:00,948 INFO L125 PetriNetUnfolderBase]: For 399941/399989 co-relation queries the response was YES. [2024-06-04 16:31:00,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27611 conditions, 4139 events. 2033/4139 cut-off events. For 399941/399989 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 30391 event pairs, 643 based on Foata normal form. 15/4141 useless extension candidates. Maximal degree in co-relation 27435. Up to 1776 conditions per place. [2024-06-04 16:31:00,998 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 266 selfloop transitions, 117 changer transitions 0/387 dead transitions. [2024-06-04 16:31:00,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 387 transitions, 6136 flow [2024-06-04 16:31:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 16:31:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 16:31:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 216 transitions. [2024-06-04 16:31:00,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37894736842105264 [2024-06-04 16:31:00,999 INFO L175 Difference]: Start difference. First operand has 443 places, 320 transitions, 4368 flow. Second operand 15 states and 216 transitions. [2024-06-04 16:31:00,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 387 transitions, 6136 flow [2024-06-04 16:31:02,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 387 transitions, 5876 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-04 16:31:02,567 INFO L231 Difference]: Finished difference. Result has 451 places, 339 transitions, 4607 flow [2024-06-04 16:31:02,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4148, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4607, PETRI_PLACES=451, PETRI_TRANSITIONS=339} [2024-06-04 16:31:02,567 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 412 predicate places. [2024-06-04 16:31:02,568 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 339 transitions, 4607 flow [2024-06-04 16:31:02,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:02,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:02,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:02,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 16:31:02,568 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:02,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2080849936, now seen corresponding path program 5 times [2024-06-04 16:31:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213692747] [2024-06-04 16:31:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:02,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:03,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:03,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213692747] [2024-06-04 16:31:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213692747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:03,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:03,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:03,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530735180] [2024-06-04 16:31:03,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:03,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:03,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:03,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:03,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:03,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:03,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 339 transitions, 4607 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:03,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:03,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:03,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:04,247 INFO L124 PetriNetUnfolderBase]: 2051/4185 cut-off events. [2024-06-04 16:31:04,247 INFO L125 PetriNetUnfolderBase]: For 406414/406462 co-relation queries the response was YES. [2024-06-04 16:31:04,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28224 conditions, 4185 events. 2051/4185 cut-off events. For 406414/406462 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 30801 event pairs, 623 based on Foata normal form. 15/4187 useless extension candidates. Maximal degree in co-relation 28047. Up to 1828 conditions per place. [2024-06-04 16:31:04,288 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 270 selfloop transitions, 122 changer transitions 0/396 dead transitions. [2024-06-04 16:31:04,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 396 transitions, 6423 flow [2024-06-04 16:31:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:31:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:31:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 243 transitions. [2024-06-04 16:31:04,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35526315789473684 [2024-06-04 16:31:04,289 INFO L175 Difference]: Start difference. First operand has 451 places, 339 transitions, 4607 flow. Second operand 18 states and 243 transitions. [2024-06-04 16:31:04,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 396 transitions, 6423 flow [2024-06-04 16:31:06,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 396 transitions, 6352 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-04 16:31:06,013 INFO L231 Difference]: Finished difference. Result has 470 places, 345 transitions, 4910 flow [2024-06-04 16:31:06,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4540, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4910, PETRI_PLACES=470, PETRI_TRANSITIONS=345} [2024-06-04 16:31:06,014 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 431 predicate places. [2024-06-04 16:31:06,014 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 345 transitions, 4910 flow [2024-06-04 16:31:06,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:06,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:06,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:06,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 16:31:06,015 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:06,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:06,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2041627470, now seen corresponding path program 6 times [2024-06-04 16:31:06,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:06,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126588345] [2024-06-04 16:31:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:06,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:06,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126588345] [2024-06-04 16:31:06,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126588345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:06,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:06,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:06,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278631776] [2024-06-04 16:31:06,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:06,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:06,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:06,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:06,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:06,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:06,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 345 transitions, 4910 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:06,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:06,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:06,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:07,608 INFO L124 PetriNetUnfolderBase]: 2069/4231 cut-off events. [2024-06-04 16:31:07,609 INFO L125 PetriNetUnfolderBase]: For 433886/433934 co-relation queries the response was YES. [2024-06-04 16:31:07,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29319 conditions, 4231 events. 2069/4231 cut-off events. For 433886/433934 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 31254 event pairs, 631 based on Foata normal form. 15/4233 useless extension candidates. Maximal degree in co-relation 29137. Up to 1880 conditions per place. [2024-06-04 16:31:07,663 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 272 selfloop transitions, 120 changer transitions 0/396 dead transitions. [2024-06-04 16:31:07,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 396 transitions, 6498 flow [2024-06-04 16:31:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:31:07,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:31:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 237 transitions. [2024-06-04 16:31:07,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3668730650154799 [2024-06-04 16:31:07,664 INFO L175 Difference]: Start difference. First operand has 470 places, 345 transitions, 4910 flow. Second operand 17 states and 237 transitions. [2024-06-04 16:31:07,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 396 transitions, 6498 flow [2024-06-04 16:31:09,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 396 transitions, 6209 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-04 16:31:09,907 INFO L231 Difference]: Finished difference. Result has 476 places, 346 transitions, 4891 flow [2024-06-04 16:31:09,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4623, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4891, PETRI_PLACES=476, PETRI_TRANSITIONS=346} [2024-06-04 16:31:09,907 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 437 predicate places. [2024-06-04 16:31:09,908 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 346 transitions, 4891 flow [2024-06-04 16:31:09,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:09,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:09,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:09,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 16:31:09,908 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:09,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1973361398, now seen corresponding path program 7 times [2024-06-04 16:31:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:09,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354366950] [2024-06-04 16:31:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:10,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:10,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354366950] [2024-06-04 16:31:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354366950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:10,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:10,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:10,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752673703] [2024-06-04 16:31:10,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:10,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:10,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:10,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:10,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 346 transitions, 4891 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:10,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:10,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:10,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:11,644 INFO L124 PetriNetUnfolderBase]: 2205/4511 cut-off events. [2024-06-04 16:31:11,644 INFO L125 PetriNetUnfolderBase]: For 573364/573412 co-relation queries the response was YES. [2024-06-04 16:31:11,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33484 conditions, 4511 events. 2205/4511 cut-off events. For 573364/573412 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 33616 event pairs, 633 based on Foata normal form. 15/4513 useless extension candidates. Maximal degree in co-relation 33301. Up to 1752 conditions per place. [2024-06-04 16:31:11,698 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 293 selfloop transitions, 120 changer transitions 0/417 dead transitions. [2024-06-04 16:31:11,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 417 transitions, 7278 flow [2024-06-04 16:31:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-04 16:31:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-04 16:31:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 254 transitions. [2024-06-04 16:31:11,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3518005540166205 [2024-06-04 16:31:11,700 INFO L175 Difference]: Start difference. First operand has 476 places, 346 transitions, 4891 flow. Second operand 19 states and 254 transitions. [2024-06-04 16:31:11,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 417 transitions, 7278 flow [2024-06-04 16:31:14,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 417 transitions, 6995 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-06-04 16:31:14,018 INFO L231 Difference]: Finished difference. Result has 486 places, 364 transitions, 5207 flow [2024-06-04 16:31:14,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4632, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5207, PETRI_PLACES=486, PETRI_TRANSITIONS=364} [2024-06-04 16:31:14,018 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 447 predicate places. [2024-06-04 16:31:14,018 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 364 transitions, 5207 flow [2024-06-04 16:31:14,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:14,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:14,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:14,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 16:31:14,019 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:14,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash -172981844, now seen corresponding path program 8 times [2024-06-04 16:31:14,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:14,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448945110] [2024-06-04 16:31:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:14,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:14,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448945110] [2024-06-04 16:31:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448945110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:14,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:14,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:14,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918180980] [2024-06-04 16:31:14,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:14,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:14,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 364 transitions, 5207 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:14,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:14,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:14,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:15,867 INFO L124 PetriNetUnfolderBase]: 2299/4709 cut-off events. [2024-06-04 16:31:15,867 INFO L125 PetriNetUnfolderBase]: For 634879/634927 co-relation queries the response was YES. [2024-06-04 16:31:15,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35879 conditions, 4709 events. 2299/4709 cut-off events. For 634879/634927 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 35454 event pairs, 671 based on Foata normal form. 15/4711 useless extension candidates. Maximal degree in co-relation 35693. Up to 1752 conditions per place. [2024-06-04 16:31:15,928 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 303 selfloop transitions, 128 changer transitions 0/435 dead transitions. [2024-06-04 16:31:15,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 435 transitions, 7780 flow [2024-06-04 16:31:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-04 16:31:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-04 16:31:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 271 transitions. [2024-06-04 16:31:15,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35657894736842105 [2024-06-04 16:31:15,929 INFO L175 Difference]: Start difference. First operand has 486 places, 364 transitions, 5207 flow. Second operand 20 states and 271 transitions. [2024-06-04 16:31:15,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 435 transitions, 7780 flow [2024-06-04 16:31:18,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 435 transitions, 7572 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-04 16:31:18,754 INFO L231 Difference]: Finished difference. Result has 505 places, 376 transitions, 5533 flow [2024-06-04 16:31:18,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5037, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5533, PETRI_PLACES=505, PETRI_TRANSITIONS=376} [2024-06-04 16:31:18,754 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 466 predicate places. [2024-06-04 16:31:18,754 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 376 transitions, 5533 flow [2024-06-04 16:31:18,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:18,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:18,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:18,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 16:31:18,755 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:18,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1181749716, now seen corresponding path program 9 times [2024-06-04 16:31:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:18,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733453127] [2024-06-04 16:31:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:18,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:19,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:19,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733453127] [2024-06-04 16:31:19,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733453127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:19,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:19,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:19,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595705398] [2024-06-04 16:31:19,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:19,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:19,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:19,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:19,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:19,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 376 transitions, 5533 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:19,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:19,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:20,504 INFO L124 PetriNetUnfolderBase]: 2303/4725 cut-off events. [2024-06-04 16:31:20,504 INFO L125 PetriNetUnfolderBase]: For 646556/646604 co-relation queries the response was YES. [2024-06-04 16:31:20,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35983 conditions, 4725 events. 2303/4725 cut-off events. For 646556/646604 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 35580 event pairs, 713 based on Foata normal form. 15/4727 useless extension candidates. Maximal degree in co-relation 35793. Up to 1752 conditions per place. [2024-06-04 16:31:20,564 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 304 selfloop transitions, 121 changer transitions 0/429 dead transitions. [2024-06-04 16:31:20,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 429 transitions, 7382 flow [2024-06-04 16:31:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:31:20,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:31:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 231 transitions. [2024-06-04 16:31:20,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37993421052631576 [2024-06-04 16:31:20,565 INFO L175 Difference]: Start difference. First operand has 505 places, 376 transitions, 5533 flow. Second operand 16 states and 231 transitions. [2024-06-04 16:31:20,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 429 transitions, 7382 flow [2024-06-04 16:31:23,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 429 transitions, 7187 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 16:31:23,289 INFO L231 Difference]: Finished difference. Result has 516 places, 380 transitions, 5673 flow [2024-06-04 16:31:23,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5342, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5673, PETRI_PLACES=516, PETRI_TRANSITIONS=380} [2024-06-04 16:31:23,290 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 477 predicate places. [2024-06-04 16:31:23,290 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 380 transitions, 5673 flow [2024-06-04 16:31:23,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:23,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:23,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:23,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 16:31:23,291 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:23,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:23,291 INFO L85 PathProgramCache]: Analyzing trace with hash -345471734, now seen corresponding path program 10 times [2024-06-04 16:31:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:23,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810544833] [2024-06-04 16:31:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:23,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:23,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810544833] [2024-06-04 16:31:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810544833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:23,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:23,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:23,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382421905] [2024-06-04 16:31:23,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:23,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:23,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:23,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:23,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:23,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 380 transitions, 5673 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:23,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:23,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:23,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:24,921 INFO L124 PetriNetUnfolderBase]: 2321/4775 cut-off events. [2024-06-04 16:31:24,921 INFO L125 PetriNetUnfolderBase]: For 681784/681832 co-relation queries the response was YES. [2024-06-04 16:31:24,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36777 conditions, 4775 events. 2321/4775 cut-off events. For 681784/681832 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 36110 event pairs, 683 based on Foata normal form. 15/4777 useless extension candidates. Maximal degree in co-relation 36583. Up to 1752 conditions per place. [2024-06-04 16:31:24,981 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 301 selfloop transitions, 130 changer transitions 0/435 dead transitions. [2024-06-04 16:31:24,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 435 transitions, 7878 flow [2024-06-04 16:31:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:31:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:31:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 249 transitions. [2024-06-04 16:31:24,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36403508771929827 [2024-06-04 16:31:24,984 INFO L175 Difference]: Start difference. First operand has 516 places, 380 transitions, 5673 flow. Second operand 18 states and 249 transitions. [2024-06-04 16:31:24,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 435 transitions, 7878 flow [2024-06-04 16:31:27,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 435 transitions, 7694 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 16:31:27,707 INFO L231 Difference]: Finished difference. Result has 526 places, 382 transitions, 5790 flow [2024-06-04 16:31:27,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5489, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5790, PETRI_PLACES=526, PETRI_TRANSITIONS=382} [2024-06-04 16:31:27,707 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 487 predicate places. [2024-06-04 16:31:27,707 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 382 transitions, 5790 flow [2024-06-04 16:31:27,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:27,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:27,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:27,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 16:31:27,708 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:27,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:27,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1009854472, now seen corresponding path program 11 times [2024-06-04 16:31:27,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:27,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264161514] [2024-06-04 16:31:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:27,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:28,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:28,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264161514] [2024-06-04 16:31:28,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264161514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:28,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:28,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:28,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854249539] [2024-06-04 16:31:28,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:28,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:28,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:28,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:28,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:28,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:28,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 382 transitions, 5790 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:28,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:28,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:28,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:29,533 INFO L124 PetriNetUnfolderBase]: 2339/4817 cut-off events. [2024-06-04 16:31:29,533 INFO L125 PetriNetUnfolderBase]: For 713592/713640 co-relation queries the response was YES. [2024-06-04 16:31:29,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37669 conditions, 4817 events. 2339/4817 cut-off events. For 713592/713640 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 36476 event pairs, 695 based on Foata normal form. 15/4819 useless extension candidates. Maximal degree in co-relation 37473. Up to 1752 conditions per place. [2024-06-04 16:31:29,598 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 311 selfloop transitions, 124 changer transitions 0/439 dead transitions. [2024-06-04 16:31:29,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 439 transitions, 7857 flow [2024-06-04 16:31:29,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-04 16:31:29,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-04 16:31:29,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 263 transitions. [2024-06-04 16:31:29,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36426592797783935 [2024-06-04 16:31:29,600 INFO L175 Difference]: Start difference. First operand has 526 places, 382 transitions, 5790 flow. Second operand 19 states and 263 transitions. [2024-06-04 16:31:29,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 439 transitions, 7857 flow [2024-06-04 16:31:32,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 439 transitions, 7569 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-04 16:31:32,431 INFO L231 Difference]: Finished difference. Result has 534 places, 385 transitions, 5814 flow [2024-06-04 16:31:32,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5814, PETRI_PLACES=534, PETRI_TRANSITIONS=385} [2024-06-04 16:31:32,433 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 495 predicate places. [2024-06-04 16:31:32,433 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 385 transitions, 5814 flow [2024-06-04 16:31:32,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:32,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:32,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:32,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 16:31:32,434 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:32,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1182344362, now seen corresponding path program 12 times [2024-06-04 16:31:32,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:32,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119341566] [2024-06-04 16:31:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:32,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:32,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:32,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119341566] [2024-06-04 16:31:32,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119341566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:32,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:32,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:32,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189895503] [2024-06-04 16:31:32,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:32,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:32,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:32,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:32,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:33,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:33,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 385 transitions, 5814 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:33,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:33,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:33,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:34,210 INFO L124 PetriNetUnfolderBase]: 2327/4797 cut-off events. [2024-06-04 16:31:34,211 INFO L125 PetriNetUnfolderBase]: For 696762/696810 co-relation queries the response was YES. [2024-06-04 16:31:34,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36921 conditions, 4797 events. 2327/4797 cut-off events. For 696762/696810 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 36343 event pairs, 703 based on Foata normal form. 15/4799 useless extension candidates. Maximal degree in co-relation 36723. Up to 1752 conditions per place. [2024-06-04 16:31:34,269 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 312 selfloop transitions, 122 changer transitions 0/438 dead transitions. [2024-06-04 16:31:34,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 438 transitions, 7664 flow [2024-06-04 16:31:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:31:34,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:31:34,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 257 transitions. [2024-06-04 16:31:34,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3757309941520468 [2024-06-04 16:31:34,271 INFO L175 Difference]: Start difference. First operand has 534 places, 385 transitions, 5814 flow. Second operand 18 states and 257 transitions. [2024-06-04 16:31:34,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 438 transitions, 7664 flow [2024-06-04 16:31:37,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 438 transitions, 7414 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-04 16:31:37,097 INFO L231 Difference]: Finished difference. Result has 540 places, 385 transitions, 5812 flow [2024-06-04 16:31:37,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5564, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5812, PETRI_PLACES=540, PETRI_TRANSITIONS=385} [2024-06-04 16:31:37,098 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 501 predicate places. [2024-06-04 16:31:37,098 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 385 transitions, 5812 flow [2024-06-04 16:31:37,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:37,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:37,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:37,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 16:31:37,099 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:37,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2116625264, now seen corresponding path program 13 times [2024-06-04 16:31:37,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:37,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20922603] [2024-06-04 16:31:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:37,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:37,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:37,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20922603] [2024-06-04 16:31:37,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20922603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:37,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:37,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:37,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958248743] [2024-06-04 16:31:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:37,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:37,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:37,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:37,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:37,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 385 transitions, 5812 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:37,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:37,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:37,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:39,047 INFO L124 PetriNetUnfolderBase]: 2435/5035 cut-off events. [2024-06-04 16:31:39,047 INFO L125 PetriNetUnfolderBase]: For 777650/777698 co-relation queries the response was YES. [2024-06-04 16:31:39,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38780 conditions, 5035 events. 2435/5035 cut-off events. For 777650/777698 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 38569 event pairs, 878 based on Foata normal form. 23/5047 useless extension candidates. Maximal degree in co-relation 38583. Up to 3859 conditions per place. [2024-06-04 16:31:39,105 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 362 selfloop transitions, 87 changer transitions 0/453 dead transitions. [2024-06-04 16:31:39,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 453 transitions, 7563 flow [2024-06-04 16:31:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:31:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:31:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 198 transitions. [2024-06-04 16:31:39,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37218045112781956 [2024-06-04 16:31:39,106 INFO L175 Difference]: Start difference. First operand has 540 places, 385 transitions, 5812 flow. Second operand 14 states and 198 transitions. [2024-06-04 16:31:39,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 453 transitions, 7563 flow [2024-06-04 16:31:42,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 453 transitions, 7177 flow, removed 12 selfloop flow, removed 21 redundant places. [2024-06-04 16:31:42,579 INFO L231 Difference]: Finished difference. Result has 537 places, 410 transitions, 6088 flow [2024-06-04 16:31:42,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5462, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6088, PETRI_PLACES=537, PETRI_TRANSITIONS=410} [2024-06-04 16:31:42,580 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 498 predicate places. [2024-06-04 16:31:42,580 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 410 transitions, 6088 flow [2024-06-04 16:31:42,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:42,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:42,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:42,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 16:31:42,581 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:42,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1522626544, now seen corresponding path program 14 times [2024-06-04 16:31:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:42,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13050465] [2024-06-04 16:31:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:42,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:43,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:43,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13050465] [2024-06-04 16:31:43,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13050465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:43,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:43,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:43,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721985952] [2024-06-04 16:31:43,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:43,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:43,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:43,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:43,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:43,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 410 transitions, 6088 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:43,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:43,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:43,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:44,674 INFO L124 PetriNetUnfolderBase]: 2677/5543 cut-off events. [2024-06-04 16:31:44,674 INFO L125 PetriNetUnfolderBase]: For 898944/898995 co-relation queries the response was YES. [2024-06-04 16:31:44,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43878 conditions, 5543 events. 2677/5543 cut-off events. For 898944/898995 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 43566 event pairs, 896 based on Foata normal form. 19/5551 useless extension candidates. Maximal degree in co-relation 43683. Up to 3659 conditions per place. [2024-06-04 16:31:44,734 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 371 selfloop transitions, 118 changer transitions 0/493 dead transitions. [2024-06-04 16:31:44,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 493 transitions, 8648 flow [2024-06-04 16:31:44,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:31:44,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:31:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 231 transitions. [2024-06-04 16:31:44,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35758513931888547 [2024-06-04 16:31:44,735 INFO L175 Difference]: Start difference. First operand has 537 places, 410 transitions, 6088 flow. Second operand 17 states and 231 transitions. [2024-06-04 16:31:44,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 493 transitions, 8648 flow [2024-06-04 16:31:48,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 493 transitions, 8436 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-04 16:31:48,307 INFO L231 Difference]: Finished difference. Result has 548 places, 440 transitions, 6754 flow [2024-06-04 16:31:48,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5912, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6754, PETRI_PLACES=548, PETRI_TRANSITIONS=440} [2024-06-04 16:31:48,307 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 509 predicate places. [2024-06-04 16:31:48,308 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 440 transitions, 6754 flow [2024-06-04 16:31:48,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:48,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:48,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:48,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 16:31:48,308 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:48,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash -833541298, now seen corresponding path program 15 times [2024-06-04 16:31:48,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:48,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379415939] [2024-06-04 16:31:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:48,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379415939] [2024-06-04 16:31:48,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379415939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:48,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:48,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289838546] [2024-06-04 16:31:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:48,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:48,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:48,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 440 transitions, 6754 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:48,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:48,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:48,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:50,366 INFO L124 PetriNetUnfolderBase]: 2749/5709 cut-off events. [2024-06-04 16:31:50,366 INFO L125 PetriNetUnfolderBase]: For 959642/959695 co-relation queries the response was YES. [2024-06-04 16:31:50,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45891 conditions, 5709 events. 2749/5709 cut-off events. For 959642/959695 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 45297 event pairs, 924 based on Foata normal form. 19/5717 useless extension candidates. Maximal degree in co-relation 45695. Up to 3763 conditions per place. [2024-06-04 16:31:50,430 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 385 selfloop transitions, 123 changer transitions 0/512 dead transitions. [2024-06-04 16:31:50,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 512 transitions, 9032 flow [2024-06-04 16:31:50,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:31:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:31:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 241 transitions. [2024-06-04 16:31:50,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35233918128654973 [2024-06-04 16:31:50,432 INFO L175 Difference]: Start difference. First operand has 548 places, 440 transitions, 6754 flow. Second operand 18 states and 241 transitions. [2024-06-04 16:31:50,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 512 transitions, 9032 flow [2024-06-04 16:31:53,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 512 transitions, 8689 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-04 16:31:53,903 INFO L231 Difference]: Finished difference. Result has 562 places, 466 transitions, 7260 flow [2024-06-04 16:31:53,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6447, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7260, PETRI_PLACES=562, PETRI_TRANSITIONS=466} [2024-06-04 16:31:53,904 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 523 predicate places. [2024-06-04 16:31:53,904 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 466 transitions, 7260 flow [2024-06-04 16:31:53,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:53,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:31:53,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:31:53,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 16:31:53,905 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:31:53,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:31:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1350136654, now seen corresponding path program 16 times [2024-06-04 16:31:53,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:31:53,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700645269] [2024-06-04 16:31:53,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:31:53,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:31:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:31:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:31:54,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:31:54,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700645269] [2024-06-04 16:31:54,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700645269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:31:54,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:31:54,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:31:54,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338872098] [2024-06-04 16:31:54,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:31:54,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:31:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:31:54,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:31:54,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:31:54,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:31:54,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 466 transitions, 7260 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:31:54,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:31:54,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:31:54,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:31:56,022 INFO L124 PetriNetUnfolderBase]: 2763/5759 cut-off events. [2024-06-04 16:31:56,022 INFO L125 PetriNetUnfolderBase]: For 997583/997636 co-relation queries the response was YES. [2024-06-04 16:31:56,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46592 conditions, 5759 events. 2763/5759 cut-off events. For 997583/997636 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 45858 event pairs, 974 based on Foata normal form. 19/5767 useless extension candidates. Maximal degree in co-relation 46391. Up to 3839 conditions per place. [2024-06-04 16:31:56,099 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 366 selfloop transitions, 134 changer transitions 0/504 dead transitions. [2024-06-04 16:31:56,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 504 transitions, 8660 flow [2024-06-04 16:31:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 16:31:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 16:31:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 207 transitions. [2024-06-04 16:31:56,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631578947368421 [2024-06-04 16:31:56,100 INFO L175 Difference]: Start difference. First operand has 562 places, 466 transitions, 7260 flow. Second operand 15 states and 207 transitions. [2024-06-04 16:31:56,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 504 transitions, 8660 flow [2024-06-04 16:32:00,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 504 transitions, 8464 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-04 16:32:00,905 INFO L231 Difference]: Finished difference. Result has 571 places, 468 transitions, 7377 flow [2024-06-04 16:32:00,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7064, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7377, PETRI_PLACES=571, PETRI_TRANSITIONS=468} [2024-06-04 16:32:00,905 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 532 predicate places. [2024-06-04 16:32:00,905 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 468 transitions, 7377 flow [2024-06-04 16:32:00,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:00,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:32:00,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:32:00,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 16:32:00,906 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:32:00,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:32:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash 604676354, now seen corresponding path program 17 times [2024-06-04 16:32:00,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:32:00,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238494204] [2024-06-04 16:32:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:32:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:32:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:32:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:32:01,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:32:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238494204] [2024-06-04 16:32:01,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238494204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:32:01,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:32:01,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:32:01,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595307730] [2024-06-04 16:32:01,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:32:01,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:32:01,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:32:01,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:32:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:32:01,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:32:01,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 468 transitions, 7377 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:01,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:32:01,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:32:01,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:32:03,203 INFO L124 PetriNetUnfolderBase]: 2889/6021 cut-off events. [2024-06-04 16:32:03,203 INFO L125 PetriNetUnfolderBase]: For 1075669/1075722 co-relation queries the response was YES. [2024-06-04 16:32:03,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49668 conditions, 6021 events. 2889/6021 cut-off events. For 1075669/1075722 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 48411 event pairs, 946 based on Foata normal form. 15/6025 useless extension candidates. Maximal degree in co-relation 49465. Up to 3247 conditions per place. [2024-06-04 16:32:03,268 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 411 selfloop transitions, 124 changer transitions 0/539 dead transitions. [2024-06-04 16:32:03,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 539 transitions, 10164 flow [2024-06-04 16:32:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-04 16:32:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-04 16:32:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 263 transitions. [2024-06-04 16:32:03,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36426592797783935 [2024-06-04 16:32:03,270 INFO L175 Difference]: Start difference. First operand has 571 places, 468 transitions, 7377 flow. Second operand 19 states and 263 transitions. [2024-06-04 16:32:03,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 539 transitions, 10164 flow [2024-06-04 16:32:07,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 539 transitions, 9963 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 16:32:07,455 INFO L231 Difference]: Finished difference. Result has 585 places, 482 transitions, 7701 flow [2024-06-04 16:32:07,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=7701, PETRI_PLACES=585, PETRI_TRANSITIONS=482} [2024-06-04 16:32:07,455 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 546 predicate places. [2024-06-04 16:32:07,455 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 482 transitions, 7701 flow [2024-06-04 16:32:07,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:07,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:32:07,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:32:07,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 16:32:07,456 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:32:07,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:32:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 432186464, now seen corresponding path program 18 times [2024-06-04 16:32:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:32:07,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201739053] [2024-06-04 16:32:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:32:07,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:32:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:32:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:32:07,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:32:07,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201739053] [2024-06-04 16:32:07,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201739053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:32:07,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:32:07,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:32:07,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767748812] [2024-06-04 16:32:07,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:32:07,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:32:07,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:32:07,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:32:07,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:32:07,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:32:07,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 482 transitions, 7701 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:07,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:32:07,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:32:07,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:32:09,646 INFO L124 PetriNetUnfolderBase]: 2907/6067 cut-off events. [2024-06-04 16:32:09,646 INFO L125 PetriNetUnfolderBase]: For 1118045/1118096 co-relation queries the response was YES. [2024-06-04 16:32:09,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50792 conditions, 6067 events. 2907/6067 cut-off events. For 1118045/1118096 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 48896 event pairs, 954 based on Foata normal form. 15/6071 useless extension candidates. Maximal degree in co-relation 50585. Up to 3247 conditions per place. [2024-06-04 16:32:09,711 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 407 selfloop transitions, 124 changer transitions 0/535 dead transitions. [2024-06-04 16:32:09,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 535 transitions, 10080 flow [2024-06-04 16:32:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:32:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:32:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 241 transitions. [2024-06-04 16:32:09,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37306501547987614 [2024-06-04 16:32:09,712 INFO L175 Difference]: Start difference. First operand has 585 places, 482 transitions, 7701 flow. Second operand 17 states and 241 transitions. [2024-06-04 16:32:09,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 535 transitions, 10080 flow [2024-06-04 16:32:13,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 535 transitions, 9762 flow, removed 65 selfloop flow, removed 10 redundant places. [2024-06-04 16:32:13,725 INFO L231 Difference]: Finished difference. Result has 593 places, 484 transitions, 7689 flow [2024-06-04 16:32:13,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7393, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7689, PETRI_PLACES=593, PETRI_TRANSITIONS=484} [2024-06-04 16:32:13,726 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 554 predicate places. [2024-06-04 16:32:13,726 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 484 transitions, 7689 flow [2024-06-04 16:32:13,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:13,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:32:13,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:32:13,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 16:32:13,726 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:32:13,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:32:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash -404091518, now seen corresponding path program 19 times [2024-06-04 16:32:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:32:13,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122854306] [2024-06-04 16:32:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:32:13,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:32:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:32:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:32:14,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:32:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122854306] [2024-06-04 16:32:14,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122854306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:32:14,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:32:14,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:32:14,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657798016] [2024-06-04 16:32:14,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:32:14,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:32:14,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:32:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:32:14,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:32:14,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:32:14,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 484 transitions, 7689 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:14,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:32:14,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:32:14,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:32:15,908 INFO L124 PetriNetUnfolderBase]: 2911/6087 cut-off events. [2024-06-04 16:32:15,908 INFO L125 PetriNetUnfolderBase]: For 1139563/1139615 co-relation queries the response was YES. [2024-06-04 16:32:15,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50716 conditions, 6087 events. 2911/6087 cut-off events. For 1139563/1139615 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 49139 event pairs, 974 based on Foata normal form. 15/6091 useless extension candidates. Maximal degree in co-relation 50511. Up to 3247 conditions per place. [2024-06-04 16:32:15,973 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 379 selfloop transitions, 145 changer transitions 0/528 dead transitions. [2024-06-04 16:32:15,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 528 transitions, 9442 flow [2024-06-04 16:32:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:32:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:32:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 201 transitions. [2024-06-04 16:32:15,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37781954887218044 [2024-06-04 16:32:15,975 INFO L175 Difference]: Start difference. First operand has 593 places, 484 transitions, 7689 flow. Second operand 14 states and 201 transitions. [2024-06-04 16:32:15,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 528 transitions, 9442 flow [2024-06-04 16:32:20,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 528 transitions, 9253 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 16:32:20,036 INFO L231 Difference]: Finished difference. Result has 601 places, 488 transitions, 7938 flow [2024-06-04 16:32:20,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7504, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7938, PETRI_PLACES=601, PETRI_TRANSITIONS=488} [2024-06-04 16:32:20,037 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 562 predicate places. [2024-06-04 16:32:20,037 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 488 transitions, 7938 flow [2024-06-04 16:32:20,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:20,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:32:20,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:32:20,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 16:32:20,037 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:32:20,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:32:20,037 INFO L85 PathProgramCache]: Analyzing trace with hash -232196274, now seen corresponding path program 20 times [2024-06-04 16:32:20,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:32:20,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982783111] [2024-06-04 16:32:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:32:20,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:32:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:32:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:32:20,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:32:20,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982783111] [2024-06-04 16:32:20,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982783111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:32:20,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:32:20,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:32:20,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235205883] [2024-06-04 16:32:20,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:32:20,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:32:20,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:32:20,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:32:20,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:32:20,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:32:20,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 488 transitions, 7938 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:20,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:32:20,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:32:20,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:32:22,361 INFO L124 PetriNetUnfolderBase]: 2929/6133 cut-off events. [2024-06-04 16:32:22,361 INFO L125 PetriNetUnfolderBase]: For 1186987/1187038 co-relation queries the response was YES. [2024-06-04 16:32:22,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51691 conditions, 6133 events. 2929/6133 cut-off events. For 1186987/1187038 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 49618 event pairs, 954 based on Foata normal form. 15/6137 useless extension candidates. Maximal degree in co-relation 51483. Up to 3247 conditions per place. [2024-06-04 16:32:22,432 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 385 selfloop transitions, 150 changer transitions 0/539 dead transitions. [2024-06-04 16:32:22,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 539 transitions, 9989 flow [2024-06-04 16:32:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:32:22,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:32:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 233 transitions. [2024-06-04 16:32:22,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606811145510836 [2024-06-04 16:32:22,434 INFO L175 Difference]: Start difference. First operand has 601 places, 488 transitions, 7938 flow. Second operand 17 states and 233 transitions. [2024-06-04 16:32:22,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 539 transitions, 9989 flow [2024-06-04 16:32:26,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 539 transitions, 9719 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-04 16:32:26,469 INFO L231 Difference]: Finished difference. Result has 611 places, 494 transitions, 8137 flow [2024-06-04 16:32:26,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7672, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8137, PETRI_PLACES=611, PETRI_TRANSITIONS=494} [2024-06-04 16:32:26,470 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 572 predicate places. [2024-06-04 16:32:26,470 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 494 transitions, 8137 flow [2024-06-04 16:32:26,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:26,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:32:26,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:32:26,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 16:32:26,470 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:32:26,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:32:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash -404686164, now seen corresponding path program 21 times [2024-06-04 16:32:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:32:26,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003807774] [2024-06-04 16:32:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:32:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:32:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:32:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:32:26,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:32:26,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003807774] [2024-06-04 16:32:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003807774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:32:26,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:32:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:32:26,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748732993] [2024-06-04 16:32:26,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:32:26,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:32:26,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:32:26,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:32:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:32:27,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:32:27,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 494 transitions, 8137 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:27,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:32:27,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:32:27,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:32:28,682 INFO L124 PetriNetUnfolderBase]: 2947/6179 cut-off events. [2024-06-04 16:32:28,682 INFO L125 PetriNetUnfolderBase]: For 1231339/1231390 co-relation queries the response was YES. [2024-06-04 16:32:28,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52741 conditions, 6179 events. 2947/6179 cut-off events. For 1231339/1231390 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 50069 event pairs, 962 based on Foata normal form. 15/6183 useless extension candidates. Maximal degree in co-relation 52529. Up to 3247 conditions per place. [2024-06-04 16:32:28,770 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 387 selfloop transitions, 148 changer transitions 0/539 dead transitions. [2024-06-04 16:32:28,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 539 transitions, 9887 flow [2024-06-04 16:32:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:32:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:32:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 227 transitions. [2024-06-04 16:32:28,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37335526315789475 [2024-06-04 16:32:28,771 INFO L175 Difference]: Start difference. First operand has 611 places, 494 transitions, 8137 flow. Second operand 16 states and 227 transitions. [2024-06-04 16:32:28,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 539 transitions, 9887 flow [2024-06-04 16:32:33,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 539 transitions, 9644 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-04 16:32:33,930 INFO L231 Difference]: Finished difference. Result has 620 places, 496 transitions, 8250 flow [2024-06-04 16:32:33,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7894, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8250, PETRI_PLACES=620, PETRI_TRANSITIONS=496} [2024-06-04 16:32:33,930 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 581 predicate places. [2024-06-04 16:32:33,930 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 496 transitions, 8250 flow [2024-06-04 16:32:33,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:33,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:32:33,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:32:33,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 16:32:33,931 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:32:33,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:32:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1751491488, now seen corresponding path program 22 times [2024-06-04 16:32:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:32:33,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651297741] [2024-06-04 16:32:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:32:33,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:32:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:32:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:32:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:32:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651297741] [2024-06-04 16:32:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651297741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:32:34,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:32:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:32:34,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541987098] [2024-06-04 16:32:34,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:32:34,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:32:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:32:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:32:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:32:34,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:32:34,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 496 transitions, 8250 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:34,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:32:34,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:32:34,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:32:36,244 INFO L124 PetriNetUnfolderBase]: 2935/6159 cut-off events. [2024-06-04 16:32:36,244 INFO L125 PetriNetUnfolderBase]: For 1217843/1217895 co-relation queries the response was YES. [2024-06-04 16:32:36,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51990 conditions, 6159 events. 2935/6159 cut-off events. For 1217843/1217895 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 49943 event pairs, 948 based on Foata normal form. 15/6163 useless extension candidates. Maximal degree in co-relation 51777. Up to 3247 conditions per place. [2024-06-04 16:32:36,322 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 404 selfloop transitions, 135 changer transitions 0/543 dead transitions. [2024-06-04 16:32:36,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 543 transitions, 10018 flow [2024-06-04 16:32:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:32:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:32:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 243 transitions. [2024-06-04 16:32:36,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35526315789473684 [2024-06-04 16:32:36,323 INFO L175 Difference]: Start difference. First operand has 620 places, 496 transitions, 8250 flow. Second operand 18 states and 243 transitions. [2024-06-04 16:32:36,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 543 transitions, 10018 flow [2024-06-04 16:32:41,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 543 transitions, 9669 flow, removed 34 selfloop flow, removed 12 redundant places. [2024-06-04 16:32:41,801 INFO L231 Difference]: Finished difference. Result has 627 places, 499 transitions, 8258 flow [2024-06-04 16:32:41,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7905, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8258, PETRI_PLACES=627, PETRI_TRANSITIONS=499} [2024-06-04 16:32:41,802 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 588 predicate places. [2024-06-04 16:32:41,802 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 499 transitions, 8258 flow [2024-06-04 16:32:41,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:32:41,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:32:41,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:32:41,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 16:32:41,802 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:32:41,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:32:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1038771420, now seen corresponding path program 23 times [2024-06-04 16:32:41,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:32:41,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916131347] [2024-06-04 16:32:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:32:41,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:32:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:32:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:32:42,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:32:42,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916131347] [2024-06-04 16:32:42,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916131347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:32:42,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:32:42,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:32:42,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964653679] [2024-06-04 16:32:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:32:42,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:32:42,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:32:42,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:32:42,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:32:42,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:32:42,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 499 transitions, 8258 flow. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:32:42,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:32:42,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:32:42,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:32:44,136 INFO L124 PetriNetUnfolderBase]: 2995/6291 cut-off events. [2024-06-04 16:32:44,136 INFO L125 PetriNetUnfolderBase]: For 1305461/1305514 co-relation queries the response was YES. [2024-06-04 16:32:44,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53448 conditions, 6291 events. 2995/6291 cut-off events. For 1305461/1305514 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 51391 event pairs, 1204 based on Foata normal form. 19/6299 useless extension candidates. Maximal degree in co-relation 53235. Up to 5282 conditions per place. [2024-06-04 16:32:44,211 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 464 selfloop transitions, 82 changer transitions 0/550 dead transitions. [2024-06-04 16:32:44,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 550 transitions, 10042 flow [2024-06-04 16:32:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:32:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:32:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-04 16:32:44,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991228070175439 [2024-06-04 16:32:44,212 INFO L175 Difference]: Start difference. First operand has 627 places, 499 transitions, 8258 flow. Second operand 12 states and 182 transitions. [2024-06-04 16:32:44,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 550 transitions, 10042 flow [2024-06-04 16:32:49,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 550 transitions, 9806 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-06-04 16:32:49,741 INFO L231 Difference]: Finished difference. Result has 630 places, 512 transitions, 8504 flow [2024-06-04 16:32:49,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8032, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8504, PETRI_PLACES=630, PETRI_TRANSITIONS=512} [2024-06-04 16:32:49,742 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 591 predicate places. [2024-06-04 16:32:49,742 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 512 transitions, 8504 flow [2024-06-04 16:32:49,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:32:49,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:32:49,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:32:49,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 16:32:49,742 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:32:49,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:32:49,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2091580492, now seen corresponding path program 24 times [2024-06-04 16:32:49,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:32:49,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775118057] [2024-06-04 16:32:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:32:49,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:32:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:32:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:32:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:32:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775118057] [2024-06-04 16:32:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775118057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:32:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:32:50,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:32:50,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992057900] [2024-06-04 16:32:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:32:50,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:32:50,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:32:50,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:32:50,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:32:50,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:32:50,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 512 transitions, 8504 flow. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:32:50,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:32:50,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:32:50,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:32:52,144 INFO L124 PetriNetUnfolderBase]: 3107/6539 cut-off events. [2024-06-04 16:32:52,144 INFO L125 PetriNetUnfolderBase]: For 1395081/1395132 co-relation queries the response was YES. [2024-06-04 16:32:52,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56154 conditions, 6539 events. 3107/6539 cut-off events. For 1395081/1395132 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 53951 event pairs, 1206 based on Foata normal form. 19/6547 useless extension candidates. Maximal degree in co-relation 55941. Up to 5160 conditions per place. [2024-06-04 16:32:52,216 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 472 selfloop transitions, 86 changer transitions 0/562 dead transitions. [2024-06-04 16:32:52,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 562 transitions, 10730 flow [2024-06-04 16:32:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 16:32:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 16:32:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 186 transitions. [2024-06-04 16:32:52,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3765182186234818 [2024-06-04 16:32:52,217 INFO L175 Difference]: Start difference. First operand has 630 places, 512 transitions, 8504 flow. Second operand 13 states and 186 transitions. [2024-06-04 16:32:52,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 562 transitions, 10730 flow [2024-06-04 16:32:58,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 562 transitions, 10603 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-04 16:32:58,137 INFO L231 Difference]: Finished difference. Result has 643 places, 527 transitions, 8930 flow [2024-06-04 16:32:58,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8416, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8930, PETRI_PLACES=643, PETRI_TRANSITIONS=527} [2024-06-04 16:32:58,137 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 604 predicate places. [2024-06-04 16:32:58,138 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 527 transitions, 8930 flow [2024-06-04 16:32:58,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:32:58,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:32:58,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:32:58,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 16:32:58,138 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:32:58,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:32:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1869935452, now seen corresponding path program 25 times [2024-06-04 16:32:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:32:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123780721] [2024-06-04 16:32:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:32:58,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:32:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:32:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:32:58,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:32:58,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123780721] [2024-06-04 16:32:58,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123780721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:32:58,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:32:58,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:32:58,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435747564] [2024-06-04 16:32:58,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:32:58,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:32:58,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:32:58,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:32:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:32:58,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:32:58,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 527 transitions, 8930 flow. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:32:58,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:32:58,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:32:58,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:33:00,706 INFO L124 PetriNetUnfolderBase]: 3135/6599 cut-off events. [2024-06-04 16:33:00,706 INFO L125 PetriNetUnfolderBase]: For 1322451/1322502 co-relation queries the response was YES. [2024-06-04 16:33:00,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55346 conditions, 6599 events. 3135/6599 cut-off events. For 1322451/1322502 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 54626 event pairs, 1210 based on Foata normal form. 15/6603 useless extension candidates. Maximal degree in co-relation 55129. Up to 5164 conditions per place. [2024-06-04 16:33:00,802 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 481 selfloop transitions, 95 changer transitions 0/580 dead transitions. [2024-06-04 16:33:00,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 580 transitions, 10808 flow [2024-06-04 16:33:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 16:33:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 16:33:00,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 207 transitions. [2024-06-04 16:33:00,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631578947368421 [2024-06-04 16:33:00,804 INFO L175 Difference]: Start difference. First operand has 643 places, 527 transitions, 8930 flow. Second operand 15 states and 207 transitions. [2024-06-04 16:33:00,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 580 transitions, 10808 flow [2024-06-04 16:33:06,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 580 transitions, 10436 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-06-04 16:33:06,843 INFO L231 Difference]: Finished difference. Result has 649 places, 544 transitions, 9201 flow [2024-06-04 16:33:06,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8578, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9201, PETRI_PLACES=649, PETRI_TRANSITIONS=544} [2024-06-04 16:33:06,843 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 610 predicate places. [2024-06-04 16:33:06,844 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 544 transitions, 9201 flow [2024-06-04 16:33:06,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:33:06,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:33:06,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:33:06,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 16:33:06,844 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:33:06,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:33:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash -681380512, now seen corresponding path program 1 times [2024-06-04 16:33:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:33:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885600491] [2024-06-04 16:33:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:33:06,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:33:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:33:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:33:07,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:33:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885600491] [2024-06-04 16:33:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885600491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:33:07,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:33:07,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:33:07,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547442575] [2024-06-04 16:33:07,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:33:07,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:33:07,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:33:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:33:07,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:33:07,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:33:07,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 544 transitions, 9201 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:07,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:33:07,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:33:07,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:33:09,170 INFO L124 PetriNetUnfolderBase]: 3135/6595 cut-off events. [2024-06-04 16:33:09,170 INFO L125 PetriNetUnfolderBase]: For 1300855/1300907 co-relation queries the response was YES. [2024-06-04 16:33:09,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54637 conditions, 6595 events. 3135/6595 cut-off events. For 1300855/1300907 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 54519 event pairs, 1260 based on Foata normal form. 11/6595 useless extension candidates. Maximal degree in co-relation 54421. Up to 5848 conditions per place. [2024-06-04 16:33:09,265 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 510 selfloop transitions, 68 changer transitions 0/582 dead transitions. [2024-06-04 16:33:09,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 662 places, 582 transitions, 10774 flow [2024-06-04 16:33:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:33:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:33:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 196 transitions. [2024-06-04 16:33:09,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684210526315789 [2024-06-04 16:33:09,266 INFO L175 Difference]: Start difference. First operand has 649 places, 544 transitions, 9201 flow. Second operand 14 states and 196 transitions. [2024-06-04 16:33:09,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 662 places, 582 transitions, 10774 flow [2024-06-04 16:33:14,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 582 transitions, 10402 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-04 16:33:14,360 INFO L231 Difference]: Finished difference. Result has 652 places, 545 transitions, 8980 flow [2024-06-04 16:33:14,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8829, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8980, PETRI_PLACES=652, PETRI_TRANSITIONS=545} [2024-06-04 16:33:14,361 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 613 predicate places. [2024-06-04 16:33:14,361 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 545 transitions, 8980 flow [2024-06-04 16:33:14,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:14,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:33:14,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:33:14,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 16:33:14,361 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:33:14,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:33:14,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1966187706, now seen corresponding path program 2 times [2024-06-04 16:33:14,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:33:14,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255819868] [2024-06-04 16:33:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:33:14,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:33:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:33:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:33:14,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:33:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255819868] [2024-06-04 16:33:14,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255819868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:33:14,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:33:14,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:33:14,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275980785] [2024-06-04 16:33:14,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:33:14,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:33:14,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:33:14,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:33:14,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:33:14,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:33:14,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 545 transitions, 8980 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:14,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:33:14,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:33:14,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:33:16,556 INFO L124 PetriNetUnfolderBase]: 3156/6630 cut-off events. [2024-06-04 16:33:16,556 INFO L125 PetriNetUnfolderBase]: For 1331031/1331081 co-relation queries the response was YES. [2024-06-04 16:33:16,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54610 conditions, 6630 events. 3156/6630 cut-off events. For 1331031/1331081 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 54781 event pairs, 1234 based on Foata normal form. 11/6630 useless extension candidates. Maximal degree in co-relation 54397. Up to 5731 conditions per place. [2024-06-04 16:33:16,654 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 523 selfloop transitions, 72 changer transitions 0/599 dead transitions. [2024-06-04 16:33:16,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 599 transitions, 11288 flow [2024-06-04 16:33:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:33:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:33:16,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 237 transitions. [2024-06-04 16:33:16,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3668730650154799 [2024-06-04 16:33:16,656 INFO L175 Difference]: Start difference. First operand has 652 places, 545 transitions, 8980 flow. Second operand 17 states and 237 transitions. [2024-06-04 16:33:16,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 599 transitions, 11288 flow [2024-06-04 16:33:21,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 599 transitions, 11149 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 16:33:21,592 INFO L231 Difference]: Finished difference. Result has 660 places, 549 transitions, 9040 flow [2024-06-04 16:33:21,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8841, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9040, PETRI_PLACES=660, PETRI_TRANSITIONS=549} [2024-06-04 16:33:21,592 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 621 predicate places. [2024-06-04 16:33:21,592 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 549 transitions, 9040 flow [2024-06-04 16:33:21,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:21,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:33:21,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:33:21,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 16:33:21,593 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:33:21,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:33:21,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1509491676, now seen corresponding path program 3 times [2024-06-04 16:33:21,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:33:21,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000711760] [2024-06-04 16:33:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:33:21,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:33:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:33:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:33:22,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:33:22,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000711760] [2024-06-04 16:33:22,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000711760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:33:22,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:33:22,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:33:22,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701375765] [2024-06-04 16:33:22,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:33:22,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:33:22,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:33:22,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:33:22,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:33:22,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:33:22,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 549 transitions, 9040 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:22,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:33:22,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:33:22,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:33:23,836 INFO L124 PetriNetUnfolderBase]: 3165/6653 cut-off events. [2024-06-04 16:33:23,836 INFO L125 PetriNetUnfolderBase]: For 1367322/1367372 co-relation queries the response was YES. [2024-06-04 16:33:23,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55195 conditions, 6653 events. 3165/6653 cut-off events. For 1367322/1367372 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 55001 event pairs, 1242 based on Foata normal form. 11/6653 useless extension candidates. Maximal degree in co-relation 54979. Up to 5755 conditions per place. [2024-06-04 16:33:23,930 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 517 selfloop transitions, 72 changer transitions 0/593 dead transitions. [2024-06-04 16:33:23,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 593 transitions, 11087 flow [2024-06-04 16:33:23,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 16:33:23,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 16:33:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 213 transitions. [2024-06-04 16:33:23,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736842105263158 [2024-06-04 16:33:23,931 INFO L175 Difference]: Start difference. First operand has 660 places, 549 transitions, 9040 flow. Second operand 15 states and 213 transitions. [2024-06-04 16:33:23,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 593 transitions, 11087 flow [2024-06-04 16:33:29,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 593 transitions, 10966 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-04 16:33:29,164 INFO L231 Difference]: Finished difference. Result has 666 places, 551 transitions, 9101 flow [2024-06-04 16:33:29,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8921, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9101, PETRI_PLACES=666, PETRI_TRANSITIONS=551} [2024-06-04 16:33:29,164 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 627 predicate places. [2024-06-04 16:33:29,164 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 551 transitions, 9101 flow [2024-06-04 16:33:29,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:29,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:33:29,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:33:29,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 16:33:29,165 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:33:29,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:33:29,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1942684708, now seen corresponding path program 4 times [2024-06-04 16:33:29,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:33:29,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204230222] [2024-06-04 16:33:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:33:29,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:33:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:33:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:33:29,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:33:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204230222] [2024-06-04 16:33:29,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204230222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:33:29,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:33:29,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:33:29,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28542863] [2024-06-04 16:33:29,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:33:29,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:33:29,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:33:29,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:33:29,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:33:29,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:33:29,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 551 transitions, 9101 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:29,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:33:29,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:33:29,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:33:31,537 INFO L124 PetriNetUnfolderBase]: 3167/6663 cut-off events. [2024-06-04 16:33:31,537 INFO L125 PetriNetUnfolderBase]: For 1391983/1392033 co-relation queries the response was YES. [2024-06-04 16:33:31,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55532 conditions, 6663 events. 3167/6663 cut-off events. For 1391983/1392033 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 55182 event pairs, 1252 based on Foata normal form. 11/6663 useless extension candidates. Maximal degree in co-relation 55313. Up to 5773 conditions per place. [2024-06-04 16:33:31,623 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 523 selfloop transitions, 73 changer transitions 0/600 dead transitions. [2024-06-04 16:33:31,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 600 transitions, 10739 flow [2024-06-04 16:33:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:33:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:33:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 245 transitions. [2024-06-04 16:33:31,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358187134502924 [2024-06-04 16:33:31,625 INFO L175 Difference]: Start difference. First operand has 666 places, 551 transitions, 9101 flow. Second operand 18 states and 245 transitions. [2024-06-04 16:33:31,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 600 transitions, 10739 flow [2024-06-04 16:33:36,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 600 transitions, 10590 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 16:33:36,742 INFO L231 Difference]: Finished difference. Result has 675 places, 552 transitions, 9116 flow [2024-06-04 16:33:36,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8952, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9116, PETRI_PLACES=675, PETRI_TRANSITIONS=552} [2024-06-04 16:33:36,743 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 636 predicate places. [2024-06-04 16:33:36,743 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 552 transitions, 9116 flow [2024-06-04 16:33:36,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:36,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:33:36,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:33:36,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 16:33:36,743 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:33:36,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:33:36,743 INFO L85 PathProgramCache]: Analyzing trace with hash -707886396, now seen corresponding path program 5 times [2024-06-04 16:33:36,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:33:36,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289370454] [2024-06-04 16:33:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:33:36,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:33:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:33:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:33:37,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:33:37,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289370454] [2024-06-04 16:33:37,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289370454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:33:37,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:33:37,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:33:37,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041974222] [2024-06-04 16:33:37,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:33:37,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:33:37,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:33:37,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:33:37,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:33:37,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:33:37,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 552 transitions, 9116 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:37,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:33:37,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:33:37,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:33:39,099 INFO L124 PetriNetUnfolderBase]: 3205/6745 cut-off events. [2024-06-04 16:33:39,099 INFO L125 PetriNetUnfolderBase]: For 1487889/1487941 co-relation queries the response was YES. [2024-06-04 16:33:39,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57334 conditions, 6745 events. 3205/6745 cut-off events. For 1487889/1487941 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 55927 event pairs, 1241 based on Foata normal form. 11/6745 useless extension candidates. Maximal degree in co-relation 57113. Up to 5478 conditions per place. [2024-06-04 16:33:39,185 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 518 selfloop transitions, 81 changer transitions 0/603 dead transitions. [2024-06-04 16:33:39,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 603 transitions, 11230 flow [2024-06-04 16:33:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:33:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:33:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 245 transitions. [2024-06-04 16:33:39,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358187134502924 [2024-06-04 16:33:39,187 INFO L175 Difference]: Start difference. First operand has 675 places, 552 transitions, 9116 flow. Second operand 18 states and 245 transitions. [2024-06-04 16:33:39,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 603 transitions, 11230 flow [2024-06-04 16:33:44,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 603 transitions, 11089 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-04 16:33:44,487 INFO L231 Difference]: Finished difference. Result has 681 places, 554 transitions, 9184 flow [2024-06-04 16:33:44,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8975, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9184, PETRI_PLACES=681, PETRI_TRANSITIONS=554} [2024-06-04 16:33:44,487 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 642 predicate places. [2024-06-04 16:33:44,487 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 554 transitions, 9184 flow [2024-06-04 16:33:44,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:44,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:33:44,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:33:44,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 16:33:44,488 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:33:44,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:33:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash 614415172, now seen corresponding path program 6 times [2024-06-04 16:33:44,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:33:44,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200931881] [2024-06-04 16:33:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:33:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:33:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:33:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:33:44,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:33:44,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200931881] [2024-06-04 16:33:44,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200931881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:33:44,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:33:44,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:33:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954778181] [2024-06-04 16:33:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:33:44,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:33:44,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:33:44,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:33:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:33:45,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:33:45,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 554 transitions, 9184 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:45,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:33:45,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:33:45,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:33:46,943 INFO L124 PetriNetUnfolderBase]: 3235/6807 cut-off events. [2024-06-04 16:33:46,943 INFO L125 PetriNetUnfolderBase]: For 1562778/1562829 co-relation queries the response was YES. [2024-06-04 16:33:47,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58805 conditions, 6807 events. 3235/6807 cut-off events. For 1562778/1562829 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 56542 event pairs, 1240 based on Foata normal form. 11/6807 useless extension candidates. Maximal degree in co-relation 58583. Up to 5478 conditions per place. [2024-06-04 16:33:47,033 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 538 selfloop transitions, 83 changer transitions 0/625 dead transitions. [2024-06-04 16:33:47,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 625 transitions, 12105 flow [2024-06-04 16:33:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-06-04 16:33:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-06-04 16:33:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 303 transitions. [2024-06-04 16:33:47,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3624401913875598 [2024-06-04 16:33:47,035 INFO L175 Difference]: Start difference. First operand has 681 places, 554 transitions, 9184 flow. Second operand 22 states and 303 transitions. [2024-06-04 16:33:47,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 625 transitions, 12105 flow [2024-06-04 16:33:52,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 625 transitions, 11922 flow, removed 21 selfloop flow, removed 14 redundant places. [2024-06-04 16:33:52,514 INFO L231 Difference]: Finished difference. Result has 690 places, 560 transitions, 9271 flow [2024-06-04 16:33:52,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9023, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9271, PETRI_PLACES=690, PETRI_TRANSITIONS=560} [2024-06-04 16:33:52,515 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 651 predicate places. [2024-06-04 16:33:52,515 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 560 transitions, 9271 flow [2024-06-04 16:33:52,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:52,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:33:52,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:33:52,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 16:33:52,516 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:33:52,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:33:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1414419748, now seen corresponding path program 7 times [2024-06-04 16:33:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:33:52,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727472210] [2024-06-04 16:33:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:33:52,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:33:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:33:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:33:52,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:33:52,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727472210] [2024-06-04 16:33:52,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727472210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:33:52,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:33:52,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:33:52,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393645915] [2024-06-04 16:33:52,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:33:52,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:33:52,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:33:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:33:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:33:53,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:33:53,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 560 transitions, 9271 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:33:53,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:33:53,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:33:53,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:33:54,933 INFO L124 PetriNetUnfolderBase]: 3251/6843 cut-off events. [2024-06-04 16:33:54,933 INFO L125 PetriNetUnfolderBase]: For 1614881/1614933 co-relation queries the response was YES. [2024-06-04 16:33:55,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59613 conditions, 6843 events. 3251/6843 cut-off events. For 1614881/1614933 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 56912 event pairs, 1242 based on Foata normal form. 11/6843 useless extension candidates. Maximal degree in co-relation 59389. Up to 5478 conditions per place. [2024-06-04 16:33:55,033 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 526 selfloop transitions, 87 changer transitions 0/617 dead transitions. [2024-06-04 16:33:55,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 617 transitions, 11650 flow [2024-06-04 16:33:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-04 16:33:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-04 16:33:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 279 transitions. [2024-06-04 16:33:55,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34962406015037595 [2024-06-04 16:33:55,035 INFO L175 Difference]: Start difference. First operand has 690 places, 560 transitions, 9271 flow. Second operand 21 states and 279 transitions. [2024-06-04 16:33:55,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 617 transitions, 11650 flow [2024-06-04 16:34:01,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 617 transitions, 11445 flow, removed 24 selfloop flow, removed 17 redundant places. [2024-06-04 16:34:01,056 INFO L231 Difference]: Finished difference. Result has 695 places, 562 transitions, 9281 flow [2024-06-04 16:34:01,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9074, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9281, PETRI_PLACES=695, PETRI_TRANSITIONS=562} [2024-06-04 16:34:01,056 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 656 predicate places. [2024-06-04 16:34:01,056 INFO L495 AbstractCegarLoop]: Abstraction has has 695 places, 562 transitions, 9281 flow [2024-06-04 16:34:01,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:01,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:34:01,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:34:01,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 16:34:01,057 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:34:01,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:34:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash -568924318, now seen corresponding path program 8 times [2024-06-04 16:34:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:34:01,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966935584] [2024-06-04 16:34:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:34:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:34:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:34:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:34:01,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:34:01,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966935584] [2024-06-04 16:34:01,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966935584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:34:01,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:34:01,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:34:01,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141935719] [2024-06-04 16:34:01,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:34:01,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:34:01,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:34:01,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:34:01,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:34:01,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:34:01,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 562 transitions, 9281 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:01,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:34:01,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:34:01,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:34:03,487 INFO L124 PetriNetUnfolderBase]: 3260/6866 cut-off events. [2024-06-04 16:34:03,487 INFO L125 PetriNetUnfolderBase]: For 1655411/1655461 co-relation queries the response was YES. [2024-06-04 16:34:03,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60099 conditions, 6866 events. 3260/6866 cut-off events. For 1655411/1655461 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 57143 event pairs, 1246 based on Foata normal form. 11/6866 useless extension candidates. Maximal degree in co-relation 59875. Up to 5478 conditions per place. [2024-06-04 16:34:03,582 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 529 selfloop transitions, 85 changer transitions 0/618 dead transitions. [2024-06-04 16:34:03,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 618 transitions, 11438 flow [2024-06-04 16:34:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-04 16:34:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-04 16:34:03,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 274 transitions. [2024-06-04 16:34:03,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605263157894737 [2024-06-04 16:34:03,584 INFO L175 Difference]: Start difference. First operand has 695 places, 562 transitions, 9281 flow. Second operand 20 states and 274 transitions. [2024-06-04 16:34:03,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 618 transitions, 11438 flow [2024-06-04 16:34:10,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 618 transitions, 11285 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-04 16:34:10,533 INFO L231 Difference]: Finished difference. Result has 699 places, 563 transitions, 9319 flow [2024-06-04 16:34:10,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9128, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9319, PETRI_PLACES=699, PETRI_TRANSITIONS=563} [2024-06-04 16:34:10,534 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 660 predicate places. [2024-06-04 16:34:10,534 INFO L495 AbstractCegarLoop]: Abstraction has has 699 places, 563 transitions, 9319 flow [2024-06-04 16:34:10,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:10,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:34:10,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:34:10,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 16:34:10,534 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:34:10,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:34:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2079851766, now seen corresponding path program 9 times [2024-06-04 16:34:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:34:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833502115] [2024-06-04 16:34:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:34:10,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:34:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:34:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:34:10,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:34:10,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833502115] [2024-06-04 16:34:10,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833502115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:34:10,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:34:10,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:34:10,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910177880] [2024-06-04 16:34:10,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:34:10,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:34:10,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:34:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:34:10,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:34:11,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:34:11,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 563 transitions, 9319 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:11,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:34:11,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:34:11,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:34:12,998 INFO L124 PetriNetUnfolderBase]: 3269/6889 cut-off events. [2024-06-04 16:34:12,998 INFO L125 PetriNetUnfolderBase]: For 1696963/1697016 co-relation queries the response was YES. [2024-06-04 16:34:13,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60708 conditions, 6889 events. 3269/6889 cut-off events. For 1696963/1697016 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 57392 event pairs, 1238 based on Foata normal form. 11/6889 useless extension candidates. Maximal degree in co-relation 60483. Up to 5478 conditions per place. [2024-06-04 16:34:13,094 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 526 selfloop transitions, 90 changer transitions 0/620 dead transitions. [2024-06-04 16:34:13,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 620 transitions, 11710 flow [2024-06-04 16:34:13,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-04 16:34:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-04 16:34:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 282 transitions. [2024-06-04 16:34:13,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3533834586466165 [2024-06-04 16:34:13,096 INFO L175 Difference]: Start difference. First operand has 699 places, 563 transitions, 9319 flow. Second operand 21 states and 282 transitions. [2024-06-04 16:34:13,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 620 transitions, 11710 flow [2024-06-04 16:34:19,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 702 places, 620 transitions, 11533 flow, removed 7 selfloop flow, removed 17 redundant places. [2024-06-04 16:34:19,071 INFO L231 Difference]: Finished difference. Result has 703 places, 564 transitions, 9343 flow [2024-06-04 16:34:19,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9142, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9343, PETRI_PLACES=703, PETRI_TRANSITIONS=564} [2024-06-04 16:34:19,072 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 664 predicate places. [2024-06-04 16:34:19,072 INFO L495 AbstractCegarLoop]: Abstraction has has 703 places, 564 transitions, 9343 flow [2024-06-04 16:34:19,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:19,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:34:19,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:34:19,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 16:34:19,072 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:34:19,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:34:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1368928894, now seen corresponding path program 10 times [2024-06-04 16:34:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:34:19,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999297816] [2024-06-04 16:34:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:34:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:34:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:34:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:34:19,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:34:19,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999297816] [2024-06-04 16:34:19,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999297816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:34:19,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:34:19,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:34:19,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022824200] [2024-06-04 16:34:19,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:34:19,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:34:19,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:34:19,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:34:19,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:34:19,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:34:19,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 564 transitions, 9343 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:19,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:34:19,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:34:19,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:34:21,466 INFO L124 PetriNetUnfolderBase]: 3263/6879 cut-off events. [2024-06-04 16:34:21,466 INFO L125 PetriNetUnfolderBase]: For 1701134/1701184 co-relation queries the response was YES. [2024-06-04 16:34:21,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60492 conditions, 6879 events. 3263/6879 cut-off events. For 1701134/1701184 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 57323 event pairs, 1250 based on Foata normal form. 11/6879 useless extension candidates. Maximal degree in co-relation 60267. Up to 5478 conditions per place. [2024-06-04 16:34:21,565 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 529 selfloop transitions, 86 changer transitions 0/619 dead transitions. [2024-06-04 16:34:21,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 722 places, 619 transitions, 11271 flow [2024-06-04 16:34:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-04 16:34:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-04 16:34:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 276 transitions. [2024-06-04 16:34:21,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631578947368421 [2024-06-04 16:34:21,566 INFO L175 Difference]: Start difference. First operand has 703 places, 564 transitions, 9343 flow. Second operand 20 states and 276 transitions. [2024-06-04 16:34:21,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 722 places, 619 transitions, 11271 flow [2024-06-04 16:34:27,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 619 transitions, 11104 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-04 16:34:27,979 INFO L231 Difference]: Finished difference. Result has 707 places, 564 transitions, 9352 flow [2024-06-04 16:34:27,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9176, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9352, PETRI_PLACES=707, PETRI_TRANSITIONS=564} [2024-06-04 16:34:27,979 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 668 predicate places. [2024-06-04 16:34:27,979 INFO L495 AbstractCegarLoop]: Abstraction has has 707 places, 564 transitions, 9352 flow [2024-06-04 16:34:27,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:27,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:34:27,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:34:27,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 16:34:27,980 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:34:27,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:34:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1818589434, now seen corresponding path program 11 times [2024-06-04 16:34:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:34:27,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593887899] [2024-06-04 16:34:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:34:27,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:34:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:34:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:34:28,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:34:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593887899] [2024-06-04 16:34:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593887899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:34:28,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:34:28,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:34:28,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463732212] [2024-06-04 16:34:28,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:34:28,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:34:28,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:34:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:34:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:34:28,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:34:28,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 564 transitions, 9352 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:28,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:34:28,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:34:28,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:34:30,405 INFO L124 PetriNetUnfolderBase]: 3279/6915 cut-off events. [2024-06-04 16:34:30,405 INFO L125 PetriNetUnfolderBase]: For 1757845/1757895 co-relation queries the response was YES. [2024-06-04 16:34:30,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61357 conditions, 6915 events. 3279/6915 cut-off events. For 1757845/1757895 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 57686 event pairs, 1142 based on Foata normal form. 11/6915 useless extension candidates. Maximal degree in co-relation 61131. Up to 4895 conditions per place. [2024-06-04 16:34:30,510 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 478 selfloop transitions, 136 changer transitions 0/618 dead transitions. [2024-06-04 16:34:30,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 618 transitions, 11951 flow [2024-06-04 16:34:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-04 16:34:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-04 16:34:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 255 transitions. [2024-06-04 16:34:30,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35318559556786705 [2024-06-04 16:34:30,511 INFO L175 Difference]: Start difference. First operand has 707 places, 564 transitions, 9352 flow. Second operand 19 states and 255 transitions. [2024-06-04 16:34:30,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 618 transitions, 11951 flow [2024-06-04 16:34:37,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 618 transitions, 11786 flow, removed 3 selfloop flow, removed 16 redundant places. [2024-06-04 16:34:37,336 INFO L231 Difference]: Finished difference. Result has 710 places, 567 transitions, 9504 flow [2024-06-04 16:34:37,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9187, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9504, PETRI_PLACES=710, PETRI_TRANSITIONS=567} [2024-06-04 16:34:37,337 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 671 predicate places. [2024-06-04 16:34:37,337 INFO L495 AbstractCegarLoop]: Abstraction has has 710 places, 567 transitions, 9504 flow [2024-06-04 16:34:37,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:37,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:34:37,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:34:37,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 16:34:37,338 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:34:37,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:34:37,338 INFO L85 PathProgramCache]: Analyzing trace with hash -857016478, now seen corresponding path program 12 times [2024-06-04 16:34:37,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:34:37,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329346578] [2024-06-04 16:34:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:34:37,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:34:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:34:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:34:37,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:34:37,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329346578] [2024-06-04 16:34:37,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329346578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:34:37,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:34:37,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:34:37,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016062026] [2024-06-04 16:34:37,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:34:37,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:34:37,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:34:37,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:34:37,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:34:37,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:34:37,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 567 transitions, 9504 flow. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:34:37,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:34:37,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:34:37,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:34:39,597 INFO L124 PetriNetUnfolderBase]: 3273/6905 cut-off events. [2024-06-04 16:34:39,597 INFO L125 PetriNetUnfolderBase]: For 1761007/1761057 co-relation queries the response was YES. [2024-06-04 16:34:39,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61300 conditions, 6905 events. 3273/6905 cut-off events. For 1761007/1761057 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 57481 event pairs, 1040 based on Foata normal form. 11/6905 useless extension candidates. Maximal degree in co-relation 61073. Up to 4031 conditions per place. [2024-06-04 16:34:39,701 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 467 selfloop transitions, 135 changer transitions 0/606 dead transitions. [2024-06-04 16:34:39,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 722 places, 606 transitions, 11562 flow [2024-06-04 16:34:39,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 16:34:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 16:34:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 191 transitions. [2024-06-04 16:34:39,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3866396761133603 [2024-06-04 16:34:39,703 INFO L175 Difference]: Start difference. First operand has 710 places, 567 transitions, 9504 flow. Second operand 13 states and 191 transitions. [2024-06-04 16:34:39,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 722 places, 606 transitions, 11562 flow [2024-06-04 16:34:47,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 606 transitions, 11166 flow, removed 22 selfloop flow, removed 17 redundant places. [2024-06-04 16:34:47,040 INFO L231 Difference]: Finished difference. Result has 706 places, 567 transitions, 9383 flow [2024-06-04 16:34:47,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9108, PETRI_DIFFERENCE_MINUEND_PLACES=693, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9383, PETRI_PLACES=706, PETRI_TRANSITIONS=567} [2024-06-04 16:34:47,041 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 667 predicate places. [2024-06-04 16:34:47,042 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 567 transitions, 9383 flow [2024-06-04 16:34:47,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 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) [2024-06-04 16:34:47,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:34:47,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:34:47,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 16:34:47,043 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:34:47,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:34:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1020368796, now seen corresponding path program 13 times [2024-06-04 16:34:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:34:47,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177590702] [2024-06-04 16:34:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:34:47,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:34:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:34:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:34:47,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:34:47,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177590702] [2024-06-04 16:34:47,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177590702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:34:47,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:34:47,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:34:47,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838418771] [2024-06-04 16:34:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:34:47,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:34:47,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:34:47,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:34:47,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:34:47,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:34:47,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 567 transitions, 9383 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:47,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:34:47,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:34:47,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:34:49,378 INFO L124 PetriNetUnfolderBase]: 3303/6967 cut-off events. [2024-06-04 16:34:49,379 INFO L125 PetriNetUnfolderBase]: For 1846610/1846660 co-relation queries the response was YES. [2024-06-04 16:34:49,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62452 conditions, 6967 events. 3303/6967 cut-off events. For 1846610/1846660 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 58130 event pairs, 1178 based on Foata normal form. 11/6967 useless extension candidates. Maximal degree in co-relation 62227. Up to 4888 conditions per place. [2024-06-04 16:34:49,484 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 501 selfloop transitions, 128 changer transitions 0/633 dead transitions. [2024-06-04 16:34:49,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 728 places, 633 transitions, 12059 flow [2024-06-04 16:34:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-06-04 16:34:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-06-04 16:34:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 305 transitions. [2024-06-04 16:34:49,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489702517162471 [2024-06-04 16:34:49,485 INFO L175 Difference]: Start difference. First operand has 706 places, 567 transitions, 9383 flow. Second operand 23 states and 305 transitions. [2024-06-04 16:34:49,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 728 places, 633 transitions, 12059 flow [2024-06-04 16:34:56,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 718 places, 633 transitions, 11856 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 16:34:56,985 INFO L231 Difference]: Finished difference. Result has 719 places, 571 transitions, 9475 flow [2024-06-04 16:34:56,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9180, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=9475, PETRI_PLACES=719, PETRI_TRANSITIONS=571} [2024-06-04 16:34:56,985 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 680 predicate places. [2024-06-04 16:34:56,986 INFO L495 AbstractCegarLoop]: Abstraction has has 719 places, 571 transitions, 9475 flow [2024-06-04 16:34:56,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:56,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:34:56,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:34:56,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 16:34:56,986 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:34:56,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:34:56,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1651407908, now seen corresponding path program 14 times [2024-06-04 16:34:56,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:34:56,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765601078] [2024-06-04 16:34:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:34:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:34:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:34:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:34:57,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:34:57,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765601078] [2024-06-04 16:34:57,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765601078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:34:57,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:34:57,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:34:57,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102515430] [2024-06-04 16:34:57,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:34:57,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:34:57,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:34:57,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:34:57,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:34:57,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:34:57,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 571 transitions, 9475 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:34:57,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:34:57,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:34:57,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:34:59,320 INFO L124 PetriNetUnfolderBase]: 3326/7016 cut-off events. [2024-06-04 16:34:59,321 INFO L125 PetriNetUnfolderBase]: For 1918347/1918398 co-relation queries the response was YES. [2024-06-04 16:34:59,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63663 conditions, 7016 events. 3326/7016 cut-off events. For 1918347/1918398 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 58731 event pairs, 1192 based on Foata normal form. 11/7016 useless extension candidates. Maximal degree in co-relation 63437. Up to 5009 conditions per place. [2024-06-04 16:34:59,427 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 483 selfloop transitions, 134 changer transitions 0/621 dead transitions. [2024-06-04 16:34:59,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 621 transitions, 11863 flow [2024-06-04 16:34:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:34:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:34:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 238 transitions. [2024-06-04 16:34:59,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684210526315789 [2024-06-04 16:34:59,429 INFO L175 Difference]: Start difference. First operand has 719 places, 571 transitions, 9475 flow. Second operand 17 states and 238 transitions. [2024-06-04 16:34:59,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 621 transitions, 11863 flow [2024-06-04 16:35:06,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 717 places, 621 transitions, 11581 flow, removed 4 selfloop flow, removed 18 redundant places. [2024-06-04 16:35:06,193 INFO L231 Difference]: Finished difference. Result has 718 places, 574 transitions, 9500 flow [2024-06-04 16:35:06,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9195, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9500, PETRI_PLACES=718, PETRI_TRANSITIONS=574} [2024-06-04 16:35:06,194 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 679 predicate places. [2024-06-04 16:35:06,194 INFO L495 AbstractCegarLoop]: Abstraction has has 718 places, 574 transitions, 9500 flow [2024-06-04 16:35:06,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:06,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:35:06,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:35:06,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 16:35:06,194 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:35:06,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:35:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash 468690080, now seen corresponding path program 15 times [2024-06-04 16:35:06,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:35:06,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819639019] [2024-06-04 16:35:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:35:06,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:35:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:35:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:35:06,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:35:06,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819639019] [2024-06-04 16:35:06,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819639019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:35:06,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:35:06,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:35:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896581814] [2024-06-04 16:35:06,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:35:06,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:35:06,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:35:06,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:35:06,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:35:06,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:35:06,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 574 transitions, 9500 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:06,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:35:06,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:35:06,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:35:08,618 INFO L124 PetriNetUnfolderBase]: 3342/7052 cut-off events. [2024-06-04 16:35:08,619 INFO L125 PetriNetUnfolderBase]: For 1977968/1978019 co-relation queries the response was YES. [2024-06-04 16:35:08,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64534 conditions, 7052 events. 3342/7052 cut-off events. For 1977968/1978019 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 59043 event pairs, 1186 based on Foata normal form. 11/7052 useless extension candidates. Maximal degree in co-relation 64307. Up to 4888 conditions per place. [2024-06-04 16:35:08,726 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 508 selfloop transitions, 127 changer transitions 0/639 dead transitions. [2024-06-04 16:35:08,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 639 transitions, 12211 flow [2024-06-04 16:35:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-06-04 16:35:08,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-06-04 16:35:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 301 transitions. [2024-06-04 16:35:08,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36004784688995217 [2024-06-04 16:35:08,727 INFO L175 Difference]: Start difference. First operand has 718 places, 574 transitions, 9500 flow. Second operand 22 states and 301 transitions. [2024-06-04 16:35:08,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 639 transitions, 12211 flow [2024-06-04 16:35:18,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 639 transitions, 12001 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 16:35:18,158 INFO L231 Difference]: Finished difference. Result has 729 places, 576 transitions, 9581 flow [2024-06-04 16:35:18,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9291, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9581, PETRI_PLACES=729, PETRI_TRANSITIONS=576} [2024-06-04 16:35:18,159 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 690 predicate places. [2024-06-04 16:35:18,159 INFO L495 AbstractCegarLoop]: Abstraction has has 729 places, 576 transitions, 9581 flow [2024-06-04 16:35:18,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:18,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:35:18,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:35:18,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 16:35:18,160 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:35:18,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:35:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash -788010526, now seen corresponding path program 16 times [2024-06-04 16:35:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:35:18,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149654955] [2024-06-04 16:35:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:35:18,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:35:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:35:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:35:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:35:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149654955] [2024-06-04 16:35:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149654955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:35:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:35:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:35:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585175826] [2024-06-04 16:35:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:35:18,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:35:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:35:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:35:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:35:18,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:35:18,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 576 transitions, 9581 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:18,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:35:18,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:35:18,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:35:20,609 INFO L124 PetriNetUnfolderBase]: 3350/7068 cut-off events. [2024-06-04 16:35:20,609 INFO L125 PetriNetUnfolderBase]: For 2010880/2010932 co-relation queries the response was YES. [2024-06-04 16:35:20,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64996 conditions, 7068 events. 3350/7068 cut-off events. For 2010880/2010932 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 59156 event pairs, 1185 based on Foata normal form. 11/7068 useless extension candidates. Maximal degree in co-relation 64767. Up to 4888 conditions per place. [2024-06-04 16:35:20,726 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 499 selfloop transitions, 133 changer transitions 0/636 dead transitions. [2024-06-04 16:35:20,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 636 transitions, 12283 flow [2024-06-04 16:35:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-04 16:35:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-04 16:35:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 274 transitions. [2024-06-04 16:35:20,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605263157894737 [2024-06-04 16:35:20,728 INFO L175 Difference]: Start difference. First operand has 729 places, 576 transitions, 9581 flow. Second operand 20 states and 274 transitions. [2024-06-04 16:35:20,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 636 transitions, 12283 flow [2024-06-04 16:35:30,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 730 places, 636 transitions, 11981 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-06-04 16:35:30,714 INFO L231 Difference]: Finished difference. Result has 732 places, 578 transitions, 9583 flow [2024-06-04 16:35:30,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9281, PETRI_DIFFERENCE_MINUEND_PLACES=711, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9583, PETRI_PLACES=732, PETRI_TRANSITIONS=578} [2024-06-04 16:35:30,715 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 693 predicate places. [2024-06-04 16:35:30,715 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 578 transitions, 9583 flow [2024-06-04 16:35:30,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:30,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:35:30,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:35:30,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 16:35:30,716 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:35:30,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:35:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash -702634844, now seen corresponding path program 17 times [2024-06-04 16:35:30,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:35:30,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266059903] [2024-06-04 16:35:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:35:30,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:35:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:35:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:35:31,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:35:31,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266059903] [2024-06-04 16:35:31,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266059903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:35:31,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:35:31,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:35:31,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846065146] [2024-06-04 16:35:31,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:35:31,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:35:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:35:31,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:35:31,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:35:31,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:35:31,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 578 transitions, 9583 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:31,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:35:31,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:35:31,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:35:33,988 INFO L124 PetriNetUnfolderBase]: 3359/7091 cut-off events. [2024-06-04 16:35:33,988 INFO L125 PetriNetUnfolderBase]: For 2057013/2057064 co-relation queries the response was YES. [2024-06-04 16:35:34,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65560 conditions, 7091 events. 3359/7091 cut-off events. For 2057013/2057064 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 59449 event pairs, 1206 based on Foata normal form. 11/7091 useless extension candidates. Maximal degree in co-relation 65329. Up to 4888 conditions per place. [2024-06-04 16:35:34,109 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 501 selfloop transitions, 128 changer transitions 0/633 dead transitions. [2024-06-04 16:35:34,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 633 transitions, 12023 flow [2024-06-04 16:35:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-04 16:35:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-04 16:35:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 271 transitions. [2024-06-04 16:35:34,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35657894736842105 [2024-06-04 16:35:34,111 INFO L175 Difference]: Start difference. First operand has 732 places, 578 transitions, 9583 flow. Second operand 20 states and 271 transitions. [2024-06-04 16:35:34,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 633 transitions, 12023 flow [2024-06-04 16:35:44,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 633 transitions, 11773 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-04 16:35:44,219 INFO L231 Difference]: Finished difference. Result has 738 places, 579 transitions, 9616 flow [2024-06-04 16:35:44,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9333, PETRI_DIFFERENCE_MINUEND_PLACES=718, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9616, PETRI_PLACES=738, PETRI_TRANSITIONS=579} [2024-06-04 16:35:44,219 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 699 predicate places. [2024-06-04 16:35:44,219 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 579 transitions, 9616 flow [2024-06-04 16:35:44,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:44,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:35:44,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:35:44,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 16:35:44,220 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:35:44,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:35:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash -212965372, now seen corresponding path program 18 times [2024-06-04 16:35:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:35:44,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765311729] [2024-06-04 16:35:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:35:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:35:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:35:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:35:44,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:35:44,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765311729] [2024-06-04 16:35:44,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765311729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:35:44,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:35:44,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:35:44,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117216667] [2024-06-04 16:35:44,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:35:44,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:35:44,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:35:44,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:35:44,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:35:44,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:35:44,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 579 transitions, 9616 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:44,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:35:44,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:35:44,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:35:47,054 INFO L124 PetriNetUnfolderBase]: 3368/7114 cut-off events. [2024-06-04 16:35:47,054 INFO L125 PetriNetUnfolderBase]: For 2106103/2106154 co-relation queries the response was YES. [2024-06-04 16:35:47,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66195 conditions, 7114 events. 3368/7114 cut-off events. For 2106103/2106154 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 59808 event pairs, 1199 based on Foata normal form. 11/7114 useless extension candidates. Maximal degree in co-relation 65963. Up to 5105 conditions per place. [2024-06-04 16:35:47,290 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 479 selfloop transitions, 142 changer transitions 0/625 dead transitions. [2024-06-04 16:35:47,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 625 transitions, 11782 flow [2024-06-04 16:35:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:35:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:35:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 241 transitions. [2024-06-04 16:35:47,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35233918128654973 [2024-06-04 16:35:47,292 INFO L175 Difference]: Start difference. First operand has 738 places, 579 transitions, 9616 flow. Second operand 18 states and 241 transitions. [2024-06-04 16:35:47,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 625 transitions, 11782 flow [2024-06-04 16:35:54,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 738 places, 625 transitions, 11532 flow, removed 8 selfloop flow, removed 17 redundant places. [2024-06-04 16:35:54,059 INFO L231 Difference]: Finished difference. Result has 739 places, 580 transitions, 9679 flow [2024-06-04 16:35:54,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9366, PETRI_DIFFERENCE_MINUEND_PLACES=721, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9679, PETRI_PLACES=739, PETRI_TRANSITIONS=580} [2024-06-04 16:35:54,059 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 700 predicate places. [2024-06-04 16:35:54,059 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 580 transitions, 9679 flow [2024-06-04 16:35:54,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:54,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:35:54,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:35:54,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 16:35:54,060 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:35:54,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:35:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -331314496, now seen corresponding path program 19 times [2024-06-04 16:35:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:35:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232414869] [2024-06-04 16:35:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:35:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:35:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:35:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:35:54,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:35:54,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232414869] [2024-06-04 16:35:54,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232414869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:35:54,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:35:54,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:35:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760077195] [2024-06-04 16:35:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:35:54,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:35:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:35:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:35:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:35:54,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:35:54,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 580 transitions, 9679 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:35:54,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:35:54,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:35:54,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:35:57,135 INFO L124 PetriNetUnfolderBase]: 3377/7137 cut-off events. [2024-06-04 16:35:57,136 INFO L125 PetriNetUnfolderBase]: For 2154950/2155001 co-relation queries the response was YES. [2024-06-04 16:35:57,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66877 conditions, 7137 events. 3377/7137 cut-off events. For 2154950/2155001 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 59944 event pairs, 1192 based on Foata normal form. 11/7137 useless extension candidates. Maximal degree in co-relation 66645. Up to 4888 conditions per place. [2024-06-04 16:35:57,235 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 494 selfloop transitions, 134 changer transitions 0/632 dead transitions. [2024-06-04 16:35:57,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 756 places, 632 transitions, 12131 flow [2024-06-04 16:35:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:35:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:35:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 250 transitions. [2024-06-04 16:35:57,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3654970760233918 [2024-06-04 16:35:57,236 INFO L175 Difference]: Start difference. First operand has 739 places, 580 transitions, 9679 flow. Second operand 18 states and 250 transitions. [2024-06-04 16:35:57,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 756 places, 632 transitions, 12131 flow [2024-06-04 16:36:05,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 632 transitions, 11831 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-06-04 16:36:05,529 INFO L231 Difference]: Finished difference. Result has 741 places, 581 transitions, 9676 flow [2024-06-04 16:36:05,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9379, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9676, PETRI_PLACES=741, PETRI_TRANSITIONS=581} [2024-06-04 16:36:05,529 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 702 predicate places. [2024-06-04 16:36:05,529 INFO L495 AbstractCegarLoop]: Abstraction has has 741 places, 581 transitions, 9676 flow [2024-06-04 16:36:05,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:36:05,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:36:05,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:36:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 16:36:05,530 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:36:05,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:36:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1959695780, now seen corresponding path program 20 times [2024-06-04 16:36:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:36:05,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853362776] [2024-06-04 16:36:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:36:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:36:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:36:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:36:05,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:36:05,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853362776] [2024-06-04 16:36:05,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853362776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:36:05,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:36:05,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:36:05,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836036342] [2024-06-04 16:36:05,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:36:05,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:36:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:36:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:36:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:36:06,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:36:06,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 581 transitions, 9676 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:36:06,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:36:06,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:36:06,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:36:08,566 INFO L124 PetriNetUnfolderBase]: 3371/7127 cut-off events. [2024-06-04 16:36:08,566 INFO L125 PetriNetUnfolderBase]: For 2159132/2159186 co-relation queries the response was YES. [2024-06-04 16:36:08,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66566 conditions, 7127 events. 3371/7127 cut-off events. For 2159132/2159186 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 59966 event pairs, 1220 based on Foata normal form. 11/7127 useless extension candidates. Maximal degree in co-relation 66333. Up to 5124 conditions per place. [2024-06-04 16:36:08,807 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 483 selfloop transitions, 136 changer transitions 0/623 dead transitions. [2024-06-04 16:36:08,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 623 transitions, 11326 flow [2024-06-04 16:36:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:36:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:36:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 231 transitions. [2024-06-04 16:36:08,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35758513931888547 [2024-06-04 16:36:08,809 INFO L175 Difference]: Start difference. First operand has 741 places, 581 transitions, 9676 flow. Second operand 17 states and 231 transitions. [2024-06-04 16:36:08,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 623 transitions, 11326 flow [2024-06-04 16:36:17,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 623 transitions, 11055 flow, removed 14 selfloop flow, removed 15 redundant places. [2024-06-04 16:36:17,200 INFO L231 Difference]: Finished difference. Result has 743 places, 581 transitions, 9682 flow [2024-06-04 16:36:17,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9405, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9682, PETRI_PLACES=743, PETRI_TRANSITIONS=581} [2024-06-04 16:36:17,200 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 704 predicate places. [2024-06-04 16:36:17,201 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 581 transitions, 9682 flow [2024-06-04 16:36:17,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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) [2024-06-04 16:36:17,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:36:17,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:36:17,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 16:36:17,201 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:36:17,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:36:17,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1424107223, now seen corresponding path program 1 times [2024-06-04 16:36:17,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:36:17,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916517455] [2024-06-04 16:36:17,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:36:17,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:36:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:36:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:36:17,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:36:17,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916517455] [2024-06-04 16:36:17,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916517455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:36:17,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:36:17,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:36:17,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977734077] [2024-06-04 16:36:17,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:36:17,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:36:17,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:36:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:36:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:36:17,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:36:17,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 581 transitions, 9682 flow. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:36:17,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:36:17,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:36:17,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:36:20,039 INFO L124 PetriNetUnfolderBase]: 3359/7107 cut-off events. [2024-06-04 16:36:20,039 INFO L125 PetriNetUnfolderBase]: For 2165056/2165066 co-relation queries the response was YES. [2024-06-04 16:36:20,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65306 conditions, 7107 events. 3359/7107 cut-off events. For 2165056/2165066 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 59816 event pairs, 953 based on Foata normal form. 12/7106 useless extension candidates. Maximal degree in co-relation 65073. Up to 2064 conditions per place. [2024-06-04 16:36:20,128 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 361 selfloop transitions, 217 changer transitions 34/616 dead transitions. [2024-06-04 16:36:20,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 756 places, 616 transitions, 11294 flow [2024-06-04 16:36:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:36:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:36:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 193 transitions. [2024-06-04 16:36:20,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36278195488721804 [2024-06-04 16:36:20,129 INFO L175 Difference]: Start difference. First operand has 743 places, 581 transitions, 9682 flow. Second operand 14 states and 193 transitions. [2024-06-04 16:36:20,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 756 places, 616 transitions, 11294 flow [2024-06-04 16:36:28,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 616 transitions, 11034 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-04 16:36:28,719 INFO L231 Difference]: Finished difference. Result has 744 places, 561 transitions, 9647 flow [2024-06-04 16:36:28,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9422, PETRI_DIFFERENCE_MINUEND_PLACES=730, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9647, PETRI_PLACES=744, PETRI_TRANSITIONS=561} [2024-06-04 16:36:28,719 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 705 predicate places. [2024-06-04 16:36:28,720 INFO L495 AbstractCegarLoop]: Abstraction has has 744 places, 561 transitions, 9647 flow [2024-06-04 16:36:28,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:36:28,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:36:28,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:36:28,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 16:36:28,720 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:36:28,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:36:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash -818164699, now seen corresponding path program 2 times [2024-06-04 16:36:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:36:28,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639661393] [2024-06-04 16:36:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:36:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:36:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:36:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:36:29,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:36:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639661393] [2024-06-04 16:36:29,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639661393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:36:29,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:36:29,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:36:29,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89302471] [2024-06-04 16:36:29,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:36:29,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:36:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:36:29,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:36:29,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:36:29,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:36:29,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 561 transitions, 9647 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:36:29,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:36:29,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:36:29,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:36:31,657 INFO L124 PetriNetUnfolderBase]: 3226/6808 cut-off events. [2024-06-04 16:36:31,657 INFO L125 PetriNetUnfolderBase]: For 2075176/2075227 co-relation queries the response was YES. [2024-06-04 16:36:31,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62350 conditions, 6808 events. 3226/6808 cut-off events. For 2075176/2075227 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 56877 event pairs, 1170 based on Foata normal form. 23/6822 useless extension candidates. Maximal degree in co-relation 62146. Up to 3490 conditions per place. [2024-06-04 16:36:31,747 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 350 selfloop transitions, 230 changer transitions 25/609 dead transitions. [2024-06-04 16:36:31,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 609 transitions, 11152 flow [2024-06-04 16:36:31,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:36:31,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:36:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 221 transitions. [2024-06-04 16:36:31,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36348684210526316 [2024-06-04 16:36:31,748 INFO L175 Difference]: Start difference. First operand has 744 places, 561 transitions, 9647 flow. Second operand 16 states and 221 transitions. [2024-06-04 16:36:31,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 609 transitions, 11152 flow [2024-06-04 16:36:38,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 609 transitions, 10368 flow, removed 8 selfloop flow, removed 18 redundant places. [2024-06-04 16:36:38,331 INFO L231 Difference]: Finished difference. Result has 724 places, 546 transitions, 9118 flow [2024-06-04 16:36:38,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8869, PETRI_DIFFERENCE_MINUEND_PLACES=708, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9118, PETRI_PLACES=724, PETRI_TRANSITIONS=546} [2024-06-04 16:36:38,332 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 685 predicate places. [2024-06-04 16:36:38,333 INFO L495 AbstractCegarLoop]: Abstraction has has 724 places, 546 transitions, 9118 flow [2024-06-04 16:36:38,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:36:38,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:36:38,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:36:38,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 16:36:38,333 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:36:38,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:36:38,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1758016143, now seen corresponding path program 3 times [2024-06-04 16:36:38,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:36:38,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197888463] [2024-06-04 16:36:38,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:36:38,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:36:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:36:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:36:38,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:36:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197888463] [2024-06-04 16:36:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197888463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:36:38,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:36:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:36:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173497701] [2024-06-04 16:36:38,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:36:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:36:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:36:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:36:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:36:39,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:36:39,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 546 transitions, 9118 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:36:39,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:36:39,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:36:39,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:36:41,254 INFO L124 PetriNetUnfolderBase]: 3106/6552 cut-off events. [2024-06-04 16:36:41,255 INFO L125 PetriNetUnfolderBase]: For 1883941/1883992 co-relation queries the response was YES. [2024-06-04 16:36:41,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59193 conditions, 6552 events. 3106/6552 cut-off events. For 1883941/1883992 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 54272 event pairs, 1158 based on Foata normal form. 15/6558 useless extension candidates. Maximal degree in co-relation 58994. Up to 3426 conditions per place. [2024-06-04 16:36:41,344 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 339 selfloop transitions, 223 changer transitions 26/592 dead transitions. [2024-06-04 16:36:41,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 592 transitions, 10573 flow [2024-06-04 16:36:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:36:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:36:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 215 transitions. [2024-06-04 16:36:41,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3536184210526316 [2024-06-04 16:36:41,345 INFO L175 Difference]: Start difference. First operand has 724 places, 546 transitions, 9118 flow. Second operand 16 states and 215 transitions. [2024-06-04 16:36:41,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 592 transitions, 10573 flow [2024-06-04 16:36:48,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 592 transitions, 10084 flow, removed 3 selfloop flow, removed 17 redundant places. [2024-06-04 16:36:48,304 INFO L231 Difference]: Finished difference. Result has 710 places, 535 transitions, 8931 flow [2024-06-04 16:36:48,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8629, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8931, PETRI_PLACES=710, PETRI_TRANSITIONS=535} [2024-06-04 16:36:48,304 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 671 predicate places. [2024-06-04 16:36:48,304 INFO L495 AbstractCegarLoop]: Abstraction has has 710 places, 535 transitions, 8931 flow [2024-06-04 16:36:48,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:36:48,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:36:48,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:36:48,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 16:36:48,305 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:36:48,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:36:48,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1023443643, now seen corresponding path program 4 times [2024-06-04 16:36:48,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:36:48,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565394389] [2024-06-04 16:36:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:36:48,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:36:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:36:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:36:48,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:36:48,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565394389] [2024-06-04 16:36:48,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565394389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:36:48,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:36:48,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:36:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815494383] [2024-06-04 16:36:48,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:36:48,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:36:48,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:36:48,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:36:48,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:36:48,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:36:48,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 535 transitions, 8931 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:36:48,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:36:48,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:36:48,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:36:50,829 INFO L124 PetriNetUnfolderBase]: 3026/6376 cut-off events. [2024-06-04 16:36:50,829 INFO L125 PetriNetUnfolderBase]: For 1764564/1764615 co-relation queries the response was YES. [2024-06-04 16:36:51,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55122 conditions, 6376 events. 3026/6376 cut-off events. For 1764564/1764615 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 52388 event pairs, 1118 based on Foata normal form. 31/6398 useless extension candidates. Maximal degree in co-relation 54925. Up to 3042 conditions per place. [2024-06-04 16:36:51,108 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 380 selfloop transitions, 167 changer transitions 32/583 dead transitions. [2024-06-04 16:36:51,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 711 places, 583 transitions, 10616 flow [2024-06-04 16:36:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:36:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:36:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 221 transitions. [2024-06-04 16:36:51,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36348684210526316 [2024-06-04 16:36:51,113 INFO L175 Difference]: Start difference. First operand has 710 places, 535 transitions, 8931 flow. Second operand 16 states and 221 transitions. [2024-06-04 16:36:51,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 711 places, 583 transitions, 10616 flow [2024-06-04 16:36:56,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 583 transitions, 10152 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 16:36:56,179 INFO L231 Difference]: Finished difference. Result has 699 places, 513 transitions, 8514 flow [2024-06-04 16:36:56,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8473, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8514, PETRI_PLACES=699, PETRI_TRANSITIONS=513} [2024-06-04 16:36:56,179 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 660 predicate places. [2024-06-04 16:36:56,179 INFO L495 AbstractCegarLoop]: Abstraction has has 699 places, 513 transitions, 8514 flow [2024-06-04 16:36:56,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:36:56,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:36:56,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:36:56,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 16:36:56,180 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:36:56,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:36:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash 192506007, now seen corresponding path program 5 times [2024-06-04 16:36:56,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:36:56,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802348320] [2024-06-04 16:36:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:36:56,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:36:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:36:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:36:56,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:36:56,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802348320] [2024-06-04 16:36:56,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802348320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:36:56,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:36:56,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:36:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884032397] [2024-06-04 16:36:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:36:56,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:36:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:36:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:36:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:36:56,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:36:56,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 513 transitions, 8514 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:36:56,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:36:56,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:36:56,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:36:58,639 INFO L124 PetriNetUnfolderBase]: 2846/5996 cut-off events. [2024-06-04 16:36:58,640 INFO L125 PetriNetUnfolderBase]: For 1534922/1534973 co-relation queries the response was YES. [2024-06-04 16:36:58,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51217 conditions, 5996 events. 2846/5996 cut-off events. For 1534922/1534973 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 48627 event pairs, 1098 based on Foata normal form. 23/6010 useless extension candidates. Maximal degree in co-relation 51022. Up to 3042 conditions per place. [2024-06-04 16:36:58,714 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 373 selfloop transitions, 155 changer transitions 30/562 dead transitions. [2024-06-04 16:36:58,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 562 transitions, 10155 flow [2024-06-04 16:36:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:36:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:36:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 228 transitions. [2024-06-04 16:36:58,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2024-06-04 16:36:58,715 INFO L175 Difference]: Start difference. First operand has 699 places, 513 transitions, 8514 flow. Second operand 17 states and 228 transitions. [2024-06-04 16:36:58,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 562 transitions, 10155 flow [2024-06-04 16:37:03,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 562 transitions, 9486 flow, removed 8 selfloop flow, removed 24 redundant places. [2024-06-04 16:37:03,227 INFO L231 Difference]: Finished difference. Result has 675 places, 494 transitions, 7922 flow [2024-06-04 16:37:03,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7853, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7922, PETRI_PLACES=675, PETRI_TRANSITIONS=494} [2024-06-04 16:37:03,227 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 636 predicate places. [2024-06-04 16:37:03,228 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 494 transitions, 7922 flow [2024-06-04 16:37:03,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:03,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:03,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:03,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 16:37:03,228 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:03,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash 438685993, now seen corresponding path program 6 times [2024-06-04 16:37:03,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864877495] [2024-06-04 16:37:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:03,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:03,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864877495] [2024-06-04 16:37:03,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864877495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:03,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:03,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896588342] [2024-06-04 16:37:03,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:03,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:03,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:03,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 494 transitions, 7922 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:03,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:03,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:03,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:05,612 INFO L124 PetriNetUnfolderBase]: 2740/5762 cut-off events. [2024-06-04 16:37:05,612 INFO L125 PetriNetUnfolderBase]: For 1345665/1345716 co-relation queries the response was YES. [2024-06-04 16:37:05,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48357 conditions, 5762 events. 2740/5762 cut-off events. For 1345665/1345716 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46257 event pairs, 1082 based on Foata normal form. 15/5768 useless extension candidates. Maximal degree in co-relation 48165. Up to 3042 conditions per place. [2024-06-04 16:37:05,680 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 357 selfloop transitions, 147 changer transitions 28/536 dead transitions. [2024-06-04 16:37:05,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 536 transitions, 9251 flow [2024-06-04 16:37:05,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 16:37:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 16:37:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 201 transitions. [2024-06-04 16:37:05,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526315789473684 [2024-06-04 16:37:05,681 INFO L175 Difference]: Start difference. First operand has 675 places, 494 transitions, 7922 flow. Second operand 15 states and 201 transitions. [2024-06-04 16:37:05,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 536 transitions, 9251 flow [2024-06-04 16:37:10,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 536 transitions, 8782 flow, removed 6 selfloop flow, removed 20 redundant places. [2024-06-04 16:37:10,727 INFO L231 Difference]: Finished difference. Result has 653 places, 482 transitions, 7587 flow [2024-06-04 16:37:10,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7457, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7587, PETRI_PLACES=653, PETRI_TRANSITIONS=482} [2024-06-04 16:37:10,727 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 614 predicate places. [2024-06-04 16:37:10,727 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 482 transitions, 7587 flow [2024-06-04 16:37:10,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:10,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:10,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:10,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 16:37:10,728 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:10,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1737574897, now seen corresponding path program 7 times [2024-06-04 16:37:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141499981] [2024-06-04 16:37:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:11,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:11,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141499981] [2024-06-04 16:37:11,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141499981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:11,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:11,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392421166] [2024-06-04 16:37:11,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:11,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:11,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:11,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:11,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 482 transitions, 7587 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:11,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:11,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:11,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:13,019 INFO L124 PetriNetUnfolderBase]: 2722/5728 cut-off events. [2024-06-04 16:37:13,020 INFO L125 PetriNetUnfolderBase]: For 1403631/1403682 co-relation queries the response was YES. [2024-06-04 16:37:13,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44014 conditions, 5728 events. 2722/5728 cut-off events. For 1403631/1403682 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 46020 event pairs, 962 based on Foata normal form. 63/5782 useless extension candidates. Maximal degree in co-relation 43824. Up to 4082 conditions per place. [2024-06-04 16:37:13,087 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 379 selfloop transitions, 55 changer transitions 89/527 dead transitions. [2024-06-04 16:37:13,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 527 transitions, 9021 flow [2024-06-04 16:37:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:37:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:37:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 191 transitions. [2024-06-04 16:37:13,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35902255639097747 [2024-06-04 16:37:13,088 INFO L175 Difference]: Start difference. First operand has 653 places, 482 transitions, 7587 flow. Second operand 14 states and 191 transitions. [2024-06-04 16:37:13,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 527 transitions, 9021 flow [2024-06-04 16:37:19,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 527 transitions, 8602 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-06-04 16:37:19,124 INFO L231 Difference]: Finished difference. Result has 629 places, 421 transitions, 6181 flow [2024-06-04 16:37:19,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7184, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6181, PETRI_PLACES=629, PETRI_TRANSITIONS=421} [2024-06-04 16:37:19,125 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 590 predicate places. [2024-06-04 16:37:19,125 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 421 transitions, 6181 flow [2024-06-04 16:37:19,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:19,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:19,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:19,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 16:37:19,125 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:19,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1966541749, now seen corresponding path program 8 times [2024-06-04 16:37:19,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:19,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162317442] [2024-06-04 16:37:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:19,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:19,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:19,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162317442] [2024-06-04 16:37:19,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162317442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:19,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:19,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:19,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695556446] [2024-06-04 16:37:19,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:19,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:19,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:19,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:19,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 421 transitions, 6181 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:19,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:19,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:19,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:21,297 INFO L124 PetriNetUnfolderBase]: 2216/4642 cut-off events. [2024-06-04 16:37:21,298 INFO L125 PetriNetUnfolderBase]: For 991807/991833 co-relation queries the response was YES. [2024-06-04 16:37:21,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36050 conditions, 4642 events. 2216/4642 cut-off events. For 991807/991833 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35408 event pairs, 674 based on Foata normal form. 21/4655 useless extension candidates. Maximal degree in co-relation 35861. Up to 2786 conditions per place. [2024-06-04 16:37:21,349 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 335 selfloop transitions, 85 changer transitions 35/459 dead transitions. [2024-06-04 16:37:21,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 459 transitions, 7491 flow [2024-06-04 16:37:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:37:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:37:21,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 218 transitions. [2024-06-04 16:37:21,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33746130030959753 [2024-06-04 16:37:21,351 INFO L175 Difference]: Start difference. First operand has 629 places, 421 transitions, 6181 flow. Second operand 17 states and 218 transitions. [2024-06-04 16:37:21,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 459 transitions, 7491 flow [2024-06-04 16:37:25,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 459 transitions, 7096 flow, removed 45 selfloop flow, removed 29 redundant places. [2024-06-04 16:37:25,881 INFO L231 Difference]: Finished difference. Result has 596 places, 397 transitions, 5612 flow [2024-06-04 16:37:25,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5796, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5612, PETRI_PLACES=596, PETRI_TRANSITIONS=397} [2024-06-04 16:37:25,882 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 557 predicate places. [2024-06-04 16:37:25,882 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 397 transitions, 5612 flow [2024-06-04 16:37:25,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:25,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:25,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:25,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 16:37:25,883 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:25,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash 401245805, now seen corresponding path program 9 times [2024-06-04 16:37:25,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:25,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896668705] [2024-06-04 16:37:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:26,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:26,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896668705] [2024-06-04 16:37:26,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896668705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:26,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:26,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:26,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955827692] [2024-06-04 16:37:26,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:26,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:26,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:26,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:26,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 397 transitions, 5612 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:26,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:26,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:26,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:27,733 INFO L124 PetriNetUnfolderBase]: 2056/4306 cut-off events. [2024-06-04 16:37:27,734 INFO L125 PetriNetUnfolderBase]: For 857385/857408 co-relation queries the response was YES. [2024-06-04 16:37:27,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30519 conditions, 4306 events. 2056/4306 cut-off events. For 857385/857408 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 32256 event pairs, 646 based on Foata normal form. 37/4335 useless extension candidates. Maximal degree in co-relation 30344. Up to 2786 conditions per place. [2024-06-04 16:37:27,778 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 319 selfloop transitions, 66 changer transitions 43/432 dead transitions. [2024-06-04 16:37:27,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 432 transitions, 6854 flow [2024-06-04 16:37:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 16:37:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 16:37:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 199 transitions. [2024-06-04 16:37:27,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34912280701754383 [2024-06-04 16:37:27,779 INFO L175 Difference]: Start difference. First operand has 596 places, 397 transitions, 5612 flow. Second operand 15 states and 199 transitions. [2024-06-04 16:37:27,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 432 transitions, 6854 flow [2024-06-04 16:37:30,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 432 transitions, 6583 flow, removed 11 selfloop flow, removed 28 redundant places. [2024-06-04 16:37:30,857 INFO L231 Difference]: Finished difference. Result has 569 places, 364 transitions, 5067 flow [2024-06-04 16:37:30,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5067, PETRI_PLACES=569, PETRI_TRANSITIONS=364} [2024-06-04 16:37:30,858 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 530 predicate places. [2024-06-04 16:37:30,858 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 364 transitions, 5067 flow [2024-06-04 16:37:30,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:30,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:30,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:30,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 16:37:30,858 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:30,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash -419118483, now seen corresponding path program 10 times [2024-06-04 16:37:30,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:30,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732552264] [2024-06-04 16:37:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:30,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:31,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:31,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732552264] [2024-06-04 16:37:31,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732552264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:31,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:31,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978655724] [2024-06-04 16:37:31,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:31,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:31,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:31,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:31,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 364 transitions, 5067 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:31,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:31,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:31,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:32,415 INFO L124 PetriNetUnfolderBase]: 1780/3738 cut-off events. [2024-06-04 16:37:32,416 INFO L125 PetriNetUnfolderBase]: For 624061/624082 co-relation queries the response was YES. [2024-06-04 16:37:32,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25193 conditions, 3738 events. 1780/3738 cut-off events. For 624061/624082 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 27120 event pairs, 614 based on Foata normal form. 29/3759 useless extension candidates. Maximal degree in co-relation 25022. Up to 2786 conditions per place. [2024-06-04 16:37:32,460 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 288 selfloop transitions, 36 changer transitions 65/393 dead transitions. [2024-06-04 16:37:32,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 393 transitions, 5987 flow [2024-06-04 16:37:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:37:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:37:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 181 transitions. [2024-06-04 16:37:32,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34022556390977443 [2024-06-04 16:37:32,461 INFO L175 Difference]: Start difference. First operand has 569 places, 364 transitions, 5067 flow. Second operand 14 states and 181 transitions. [2024-06-04 16:37:32,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 393 transitions, 5987 flow [2024-06-04 16:37:34,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 393 transitions, 5819 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-06-04 16:37:34,821 INFO L231 Difference]: Finished difference. Result has 543 places, 319 transitions, 4441 flow [2024-06-04 16:37:34,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4899, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4441, PETRI_PLACES=543, PETRI_TRANSITIONS=319} [2024-06-04 16:37:34,822 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 504 predicate places. [2024-06-04 16:37:34,822 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 319 transitions, 4441 flow [2024-06-04 16:37:34,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:34,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:34,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:34,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 16:37:34,823 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:34,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:34,823 INFO L85 PathProgramCache]: Analyzing trace with hash -430153055, now seen corresponding path program 11 times [2024-06-04 16:37:34,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:34,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264179348] [2024-06-04 16:37:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:34,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:35,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:35,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264179348] [2024-06-04 16:37:35,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264179348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:35,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:35,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:37:35,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228060503] [2024-06-04 16:37:35,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:35,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:37:35,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:37:35,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:37:35,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:35,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 319 transitions, 4441 flow. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:35,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:35,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:35,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:36,390 INFO L124 PetriNetUnfolderBase]: 1540/3186 cut-off events. [2024-06-04 16:37:36,390 INFO L125 PetriNetUnfolderBase]: For 447805/447805 co-relation queries the response was YES. [2024-06-04 16:37:36,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21705 conditions, 3186 events. 1540/3186 cut-off events. For 447805/447805 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22116 event pairs, 518 based on Foata normal form. 8/3190 useless extension candidates. Maximal degree in co-relation 21538. Up to 1888 conditions per place. [2024-06-04 16:37:36,416 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 196 selfloop transitions, 34 changer transitions 109/343 dead transitions. [2024-06-04 16:37:36,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 343 transitions, 5195 flow [2024-06-04 16:37:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 16:37:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 16:37:36,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-04 16:37:36,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3441295546558704 [2024-06-04 16:37:36,417 INFO L175 Difference]: Start difference. First operand has 543 places, 319 transitions, 4441 flow. Second operand 13 states and 170 transitions. [2024-06-04 16:37:36,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 343 transitions, 5195 flow [2024-06-04 16:37:38,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 343 transitions, 4951 flow, removed 17 selfloop flow, removed 25 redundant places. [2024-06-04 16:37:38,234 INFO L231 Difference]: Finished difference. Result has 486 places, 222 transitions, 2678 flow [2024-06-04 16:37:38,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4205, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2678, PETRI_PLACES=486, PETRI_TRANSITIONS=222} [2024-06-04 16:37:38,234 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 447 predicate places. [2024-06-04 16:37:38,235 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 222 transitions, 2678 flow [2024-06-04 16:37:38,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:38,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:38,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:38,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 16:37:38,235 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:38,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:38,236 INFO L85 PathProgramCache]: Analyzing trace with hash -806297747, now seen corresponding path program 12 times [2024-06-04 16:37:38,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:38,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025516489] [2024-06-04 16:37:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:38,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:39,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:39,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025516489] [2024-06-04 16:37:39,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025516489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:39,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:39,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:39,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237124921] [2024-06-04 16:37:39,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:39,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:39,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:39,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:39,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:39,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:39,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 222 transitions, 2678 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:39,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:39,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:39,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:39,690 INFO L124 PetriNetUnfolderBase]: 1003/2059 cut-off events. [2024-06-04 16:37:39,690 INFO L125 PetriNetUnfolderBase]: For 350132/350132 co-relation queries the response was YES. [2024-06-04 16:37:39,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14839 conditions, 2059 events. 1003/2059 cut-off events. For 350132/350132 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13049 event pairs, 409 based on Foata normal form. 4/2061 useless extension candidates. Maximal degree in co-relation 14685. Up to 1825 conditions per place. [2024-06-04 16:37:39,715 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 182 selfloop transitions, 26 changer transitions 34/246 dead transitions. [2024-06-04 16:37:39,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 246 transitions, 3234 flow [2024-06-04 16:37:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 16:37:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 16:37:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-04 16:37:39,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32388663967611336 [2024-06-04 16:37:39,716 INFO L175 Difference]: Start difference. First operand has 486 places, 222 transitions, 2678 flow. Second operand 13 states and 160 transitions. [2024-06-04 16:37:39,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 246 transitions, 3234 flow [2024-06-04 16:37:41,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 246 transitions, 2858 flow, removed 28 selfloop flow, removed 56 redundant places. [2024-06-04 16:37:41,096 INFO L231 Difference]: Finished difference. Result has 390 places, 204 transitions, 2176 flow [2024-06-04 16:37:41,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2176, PETRI_PLACES=390, PETRI_TRANSITIONS=204} [2024-06-04 16:37:41,096 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 351 predicate places. [2024-06-04 16:37:41,096 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 204 transitions, 2176 flow [2024-06-04 16:37:41,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:41,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:41,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:41,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 16:37:41,097 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:41,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:41,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1253874591, now seen corresponding path program 13 times [2024-06-04 16:37:41,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:41,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590080905] [2024-06-04 16:37:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:41,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:41,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:41,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590080905] [2024-06-04 16:37:41,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590080905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:41,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:41,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:41,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962780482] [2024-06-04 16:37:41,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:41,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:41,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:41,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:41,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:41,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 204 transitions, 2176 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:41,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:41,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:41,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:42,100 INFO L124 PetriNetUnfolderBase]: 930/1907 cut-off events. [2024-06-04 16:37:42,100 INFO L125 PetriNetUnfolderBase]: For 265667/265667 co-relation queries the response was YES. [2024-06-04 16:37:42,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 1907 events. 930/1907 cut-off events. For 265667/265667 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12064 event pairs, 275 based on Foata normal form. 8/1914 useless extension candidates. Maximal degree in co-relation 12198. Up to 1171 conditions per place. [2024-06-04 16:37:42,119 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 169 selfloop transitions, 42 changer transitions 25/240 dead transitions. [2024-06-04 16:37:42,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 240 transitions, 2910 flow [2024-06-04 16:37:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-04 16:37:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-04 16:37:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 215 transitions. [2024-06-04 16:37:42,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31432748538011696 [2024-06-04 16:37:42,120 INFO L175 Difference]: Start difference. First operand has 390 places, 204 transitions, 2176 flow. Second operand 18 states and 215 transitions. [2024-06-04 16:37:42,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 240 transitions, 2910 flow [2024-06-04 16:37:43,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 240 transitions, 2669 flow, removed 16 selfloop flow, removed 32 redundant places. [2024-06-04 16:37:43,056 INFO L231 Difference]: Finished difference. Result has 363 places, 192 transitions, 1921 flow [2024-06-04 16:37:43,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1921, PETRI_PLACES=363, PETRI_TRANSITIONS=192} [2024-06-04 16:37:43,057 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 324 predicate places. [2024-06-04 16:37:43,057 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 192 transitions, 1921 flow [2024-06-04 16:37:43,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:43,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:43,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:43,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 16:37:43,057 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:43,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:43,058 INFO L85 PathProgramCache]: Analyzing trace with hash -484357853, now seen corresponding path program 14 times [2024-06-04 16:37:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:43,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910910039] [2024-06-04 16:37:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:43,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:43,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:43,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910910039] [2024-06-04 16:37:43,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910910039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:43,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:43,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:43,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380591083] [2024-06-04 16:37:43,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:43,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:43,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:43,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:43,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:43,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 192 transitions, 1921 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:43,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:43,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:43,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:43,983 INFO L124 PetriNetUnfolderBase]: 850/1743 cut-off events. [2024-06-04 16:37:43,984 INFO L125 PetriNetUnfolderBase]: For 218563/218563 co-relation queries the response was YES. [2024-06-04 16:37:43,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 1743 events. 850/1743 cut-off events. For 218563/218563 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10767 event pairs, 259 based on Foata normal form. 12/1754 useless extension candidates. Maximal degree in co-relation 10168. Up to 1171 conditions per place. [2024-06-04 16:37:43,999 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 160 selfloop transitions, 36 changer transitions 28/228 dead transitions. [2024-06-04 16:37:43,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 228 transitions, 2615 flow [2024-06-04 16:37:44,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-04 16:37:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-04 16:37:44,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 221 transitions. [2024-06-04 16:37:44,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3060941828254848 [2024-06-04 16:37:44,000 INFO L175 Difference]: Start difference. First operand has 363 places, 192 transitions, 1921 flow. Second operand 19 states and 221 transitions. [2024-06-04 16:37:44,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 228 transitions, 2615 flow [2024-06-04 16:37:44,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 228 transitions, 2434 flow, removed 10 selfloop flow, removed 31 redundant places. [2024-06-04 16:37:44,609 INFO L231 Difference]: Finished difference. Result has 339 places, 177 transitions, 1670 flow [2024-06-04 16:37:44,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1670, PETRI_PLACES=339, PETRI_TRANSITIONS=177} [2024-06-04 16:37:44,610 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 300 predicate places. [2024-06-04 16:37:44,610 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 177 transitions, 1670 flow [2024-06-04 16:37:44,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:44,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:44,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:44,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 16:37:44,610 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:44,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1103776513, now seen corresponding path program 15 times [2024-06-04 16:37:44,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:44,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883889586] [2024-06-04 16:37:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:44,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:45,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:45,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883889586] [2024-06-04 16:37:45,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883889586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:45,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:45,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:45,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075684504] [2024-06-04 16:37:45,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:45,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:45,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:45,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:45,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:45,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:45,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 177 transitions, 1670 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:45,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:45,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:45,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:45,488 INFO L124 PetriNetUnfolderBase]: 744/1525 cut-off events. [2024-06-04 16:37:45,488 INFO L125 PetriNetUnfolderBase]: For 158785/158785 co-relation queries the response was YES. [2024-06-04 16:37:45,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7954 conditions, 1525 events. 744/1525 cut-off events. For 158785/158785 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9112 event pairs, 245 based on Foata normal form. 16/1540 useless extension candidates. Maximal degree in co-relation 7842. Up to 1171 conditions per place. [2024-06-04 16:37:45,498 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 134 selfloop transitions, 14 changer transitions 51/203 dead transitions. [2024-06-04 16:37:45,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 203 transitions, 2122 flow [2024-06-04 16:37:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:37:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:37:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 185 transitions. [2024-06-04 16:37:45,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3042763157894737 [2024-06-04 16:37:45,499 INFO L175 Difference]: Start difference. First operand has 339 places, 177 transitions, 1670 flow. Second operand 16 states and 185 transitions. [2024-06-04 16:37:45,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 203 transitions, 2122 flow [2024-06-04 16:37:45,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 203 transitions, 2022 flow, removed 9 selfloop flow, removed 26 redundant places. [2024-06-04 16:37:45,798 INFO L231 Difference]: Finished difference. Result has 314 places, 147 transitions, 1327 flow [2024-06-04 16:37:45,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1327, PETRI_PLACES=314, PETRI_TRANSITIONS=147} [2024-06-04 16:37:45,799 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 275 predicate places. [2024-06-04 16:37:45,799 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 147 transitions, 1327 flow [2024-06-04 16:37:45,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:45,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:45,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:45,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 16:37:45,800 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:45,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2034119903, now seen corresponding path program 16 times [2024-06-04 16:37:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775170288] [2024-06-04 16:37:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:45,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:46,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775170288] [2024-06-04 16:37:46,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775170288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:46,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:46,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055382405] [2024-06-04 16:37:46,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:46,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:46,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:46,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:46,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:46,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:46,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 147 transitions, 1327 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:46,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:46,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:46,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:46,598 INFO L124 PetriNetUnfolderBase]: 597/1216 cut-off events. [2024-06-04 16:37:46,599 INFO L125 PetriNetUnfolderBase]: For 86197/86197 co-relation queries the response was YES. [2024-06-04 16:37:46,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5976 conditions, 1216 events. 597/1216 cut-off events. For 86197/86197 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6805 event pairs, 75 based on Foata normal form. 8/1223 useless extension candidates. Maximal degree in co-relation 5872. Up to 292 conditions per place. [2024-06-04 16:37:46,608 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 96 selfloop transitions, 63 changer transitions 29/192 dead transitions. [2024-06-04 16:37:46,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 192 transitions, 1947 flow [2024-06-04 16:37:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-04 16:37:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-04 16:37:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 248 transitions. [2024-06-04 16:37:46,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3107769423558897 [2024-06-04 16:37:46,609 INFO L175 Difference]: Start difference. First operand has 314 places, 147 transitions, 1327 flow. Second operand 21 states and 248 transitions. [2024-06-04 16:37:46,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 192 transitions, 1947 flow [2024-06-04 16:37:46,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 192 transitions, 1810 flow, removed 40 selfloop flow, removed 31 redundant places. [2024-06-04 16:37:46,742 INFO L231 Difference]: Finished difference. Result has 255 places, 131 transitions, 1210 flow [2024-06-04 16:37:46,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1210, PETRI_PLACES=255, PETRI_TRANSITIONS=131} [2024-06-04 16:37:46,743 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 216 predicate places. [2024-06-04 16:37:46,743 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 131 transitions, 1210 flow [2024-06-04 16:37:46,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:46,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:46,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:46,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 16:37:46,744 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:37:46,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1460842817, now seen corresponding path program 17 times [2024-06-04 16:37:46,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:46,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671900202] [2024-06-04 16:37:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:47,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:47,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671900202] [2024-06-04 16:37:47,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671900202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:47,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:47,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:47,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626623192] [2024-06-04 16:37:47,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:47,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:47,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:47,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:47,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 131 transitions, 1210 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:47,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:47,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:47,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:47,545 INFO L124 PetriNetUnfolderBase]: 489/1000 cut-off events. [2024-06-04 16:37:47,546 INFO L125 PetriNetUnfolderBase]: For 37297/37297 co-relation queries the response was YES. [2024-06-04 16:37:47,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 1000 events. 489/1000 cut-off events. For 37297/37297 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5283 event pairs, 61 based on Foata normal form. 12/1011 useless extension candidates. Maximal degree in co-relation 4182. Up to 244 conditions per place. [2024-06-04 16:37:47,554 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 80 selfloop transitions, 40 changer transitions 46/170 dead transitions. [2024-06-04 16:37:47,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 170 transitions, 1736 flow [2024-06-04 16:37:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-04 16:37:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-04 16:37:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 224 transitions. [2024-06-04 16:37:47,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31024930747922436 [2024-06-04 16:37:47,555 INFO L175 Difference]: Start difference. First operand has 255 places, 131 transitions, 1210 flow. Second operand 19 states and 224 transitions. [2024-06-04 16:37:47,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 170 transitions, 1736 flow [2024-06-04 16:37:47,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 170 transitions, 1573 flow, removed 10 selfloop flow, removed 22 redundant places. [2024-06-04 16:37:47,613 INFO L231 Difference]: Finished difference. Result has 241 places, 99 transitions, 888 flow [2024-06-04 16:37:47,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=888, PETRI_PLACES=241, PETRI_TRANSITIONS=99} [2024-06-04 16:37:47,613 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 202 predicate places. [2024-06-04 16:37:47,614 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 99 transitions, 888 flow [2024-06-04 16:37:47,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:47,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:47,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:47,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 16:37:47,614 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)] === [2024-06-04 16:37:47,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:47,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2055015079, now seen corresponding path program 18 times [2024-06-04 16:37:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:47,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880859068] [2024-06-04 16:37:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:47,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880859068] [2024-06-04 16:37:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880859068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:48,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:48,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286976651] [2024-06-04 16:37:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:48,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:48,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:48,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:48,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 99 transitions, 888 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:48,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:48,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:48,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:48,367 INFO L124 PetriNetUnfolderBase]: 335/690 cut-off events. [2024-06-04 16:37:48,367 INFO L125 PetriNetUnfolderBase]: For 21505/21505 co-relation queries the response was YES. [2024-06-04 16:37:48,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3098 conditions, 690 events. 335/690 cut-off events. For 21505/21505 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3198 event pairs, 47 based on Foata normal form. 4/693 useless extension candidates. Maximal degree in co-relation 3018. Up to 166 conditions per place. [2024-06-04 16:37:48,371 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 60 selfloop transitions, 30 changer transitions 36/130 dead transitions. [2024-06-04 16:37:48,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 130 transitions, 1206 flow [2024-06-04 16:37:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-04 16:37:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-04 16:37:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 198 transitions. [2024-06-04 16:37:48,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3065015479876161 [2024-06-04 16:37:48,372 INFO L175 Difference]: Start difference. First operand has 241 places, 99 transitions, 888 flow. Second operand 17 states and 198 transitions. [2024-06-04 16:37:48,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 130 transitions, 1206 flow [2024-06-04 16:37:48,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 130 transitions, 1092 flow, removed 15 selfloop flow, removed 28 redundant places. [2024-06-04 16:37:48,404 INFO L231 Difference]: Finished difference. Result has 201 places, 76 transitions, 636 flow [2024-06-04 16:37:48,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=636, PETRI_PLACES=201, PETRI_TRANSITIONS=76} [2024-06-04 16:37:48,405 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 162 predicate places. [2024-06-04 16:37:48,405 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 76 transitions, 636 flow [2024-06-04 16:37:48,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:48,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:48,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:48,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 16:37:48,406 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)] === [2024-06-04 16:37:48,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:48,406 INFO L85 PathProgramCache]: Analyzing trace with hash 598264099, now seen corresponding path program 19 times [2024-06-04 16:37:48,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:48,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592721422] [2024-06-04 16:37:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:48,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:48,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:48,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592721422] [2024-06-04 16:37:48,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592721422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:48,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:48,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:48,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962368662] [2024-06-04 16:37:48,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:48,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:48,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:48,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:48,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:48,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:48,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 76 transitions, 636 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:48,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:48,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:48,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:49,176 INFO L124 PetriNetUnfolderBase]: 215/458 cut-off events. [2024-06-04 16:37:49,177 INFO L125 PetriNetUnfolderBase]: For 8717/8717 co-relation queries the response was YES. [2024-06-04 16:37:49,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 458 events. 215/458 cut-off events. For 8717/8717 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1849 event pairs, 43 based on Foata normal form. 4/461 useless extension candidates. Maximal degree in co-relation 1858. Up to 132 conditions per place. [2024-06-04 16:37:49,179 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 47 selfloop transitions, 21 changer transitions 30/102 dead transitions. [2024-06-04 16:37:49,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 102 transitions, 886 flow [2024-06-04 16:37:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-04 16:37:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-04 16:37:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 181 transitions. [2024-06-04 16:37:49,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29769736842105265 [2024-06-04 16:37:49,180 INFO L175 Difference]: Start difference. First operand has 201 places, 76 transitions, 636 flow. Second operand 16 states and 181 transitions. [2024-06-04 16:37:49,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 102 transitions, 886 flow [2024-06-04 16:37:49,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 102 transitions, 724 flow, removed 14 selfloop flow, removed 35 redundant places. [2024-06-04 16:37:49,192 INFO L231 Difference]: Finished difference. Result has 162 places, 61 transitions, 410 flow [2024-06-04 16:37:49,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=410, PETRI_PLACES=162, PETRI_TRANSITIONS=61} [2024-06-04 16:37:49,192 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 123 predicate places. [2024-06-04 16:37:49,193 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 61 transitions, 410 flow [2024-06-04 16:37:49,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:49,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:49,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 16:37:49,193 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)] === [2024-06-04 16:37:49,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:49,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1429085045, now seen corresponding path program 20 times [2024-06-04 16:37:49,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:49,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959961761] [2024-06-04 16:37:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:49,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:49,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959961761] [2024-06-04 16:37:49,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959961761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:49,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:49,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:37:49,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73027841] [2024-06-04 16:37:49,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:49,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:37:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:37:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:37:49,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:49,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 61 transitions, 410 flow. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:49,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:49,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:49,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:49,892 INFO L124 PetriNetUnfolderBase]: 155/334 cut-off events. [2024-06-04 16:37:49,892 INFO L125 PetriNetUnfolderBase]: For 2525/2525 co-relation queries the response was YES. [2024-06-04 16:37:49,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 334 events. 155/334 cut-off events. For 2525/2525 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1157 event pairs, 35 based on Foata normal form. 4/337 useless extension candidates. Maximal degree in co-relation 1153. Up to 100 conditions per place. [2024-06-04 16:37:49,893 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 39 selfloop transitions, 13 changer transitions 28/84 dead transitions. [2024-06-04 16:37:49,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 84 transitions, 618 flow [2024-06-04 16:37:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 16:37:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 16:37:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-06-04 16:37:49,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29887218045112784 [2024-06-04 16:37:49,894 INFO L175 Difference]: Start difference. First operand has 162 places, 61 transitions, 410 flow. Second operand 14 states and 159 transitions. [2024-06-04 16:37:49,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 84 transitions, 618 flow [2024-06-04 16:37:49,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 84 transitions, 555 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-04 16:37:49,901 INFO L231 Difference]: Finished difference. Result has 143 places, 50 transitions, 301 flow [2024-06-04 16:37:49,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=301, PETRI_PLACES=143, PETRI_TRANSITIONS=50} [2024-06-04 16:37:49,902 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 104 predicate places. [2024-06-04 16:37:49,902 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 50 transitions, 301 flow [2024-06-04 16:37:49,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:49,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:37:49,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:49,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 16:37:49,903 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)] === [2024-06-04 16:37:49,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:37:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1172118389, now seen corresponding path program 21 times [2024-06-04 16:37:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:37:49,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535396168] [2024-06-04 16:37:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:37:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:37:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:37:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:37:50,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:37:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535396168] [2024-06-04 16:37:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535396168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:37:50,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:37:50,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:37:50,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311190298] [2024-06-04 16:37:50,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:37:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:37:50,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:37:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:37:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:37:50,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-04 16:37:50,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 50 transitions, 301 flow. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:50,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:37:50,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-04 16:37:50,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:37:50,494 INFO L124 PetriNetUnfolderBase]: 111/242 cut-off events. [2024-06-04 16:37:50,494 INFO L125 PetriNetUnfolderBase]: For 1117/1117 co-relation queries the response was YES. [2024-06-04 16:37:50,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 242 events. 111/242 cut-off events. For 1117/1117 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 728 event pairs, 13 based on Foata normal form. 4/245 useless extension candidates. Maximal degree in co-relation 731. Up to 60 conditions per place. [2024-06-04 16:37:50,495 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2024-06-04 16:37:50,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 63 transitions, 401 flow [2024-06-04 16:37:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:37:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:37:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 16:37:50,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28708133971291866 [2024-06-04 16:37:50,495 INFO L175 Difference]: Start difference. First operand has 143 places, 50 transitions, 301 flow. Second operand 11 states and 120 transitions. [2024-06-04 16:37:50,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 63 transitions, 401 flow [2024-06-04 16:37:50,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 63 transitions, 311 flow, removed 1 selfloop flow, removed 25 redundant places. [2024-06-04 16:37:50,497 INFO L231 Difference]: Finished difference. Result has 101 places, 0 transitions, 0 flow [2024-06-04 16:37:50,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=101, PETRI_TRANSITIONS=0} [2024-06-04 16:37:50,497 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2024-06-04 16:37:50,497 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 0 transitions, 0 flow [2024-06-04 16:37:50,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:37:50,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 16:37:50,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 16:37:50,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 16:37:50,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 16:37:50,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 16:37:50,501 INFO L445 BasicCegarLoop]: Path program histogram: [25, 21, 20, 20, 20, 7, 6, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:37:50,503 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 16:37:50,503 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 16:37:50,507 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 16:37:50,507 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 16:37:50,508 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 04:37:50 BasicIcfg [2024-06-04 16:37:50,508 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 16:37:50,508 INFO L158 Benchmark]: Toolchain (without parser) took 535041.44ms. Allocated memory was 134.2MB in the beginning and 9.7GB in the end (delta: 9.6GB). Free memory was 56.7MB in the beginning and 6.6GB in the end (delta: -6.5GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2024-06-04 16:37:50,509 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 134.2MB. Free memory was 95.2MB in the beginning and 95.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:37:50,509 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:37:50,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.03ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 56.5MB in the beginning and 141.6MB in the end (delta: -85.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2024-06-04 16:37:50,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.93ms. Allocated memory is still 182.5MB. Free memory was 141.6MB in the beginning and 138.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:37:50,510 INFO L158 Benchmark]: Boogie Preprocessor took 82.93ms. Allocated memory is still 182.5MB. Free memory was 138.6MB in the beginning and 136.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:37:50,510 INFO L158 Benchmark]: RCFGBuilder took 659.82ms. Allocated memory is still 182.5MB. Free memory was 136.5MB in the beginning and 96.7MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-06-04 16:37:50,510 INFO L158 Benchmark]: TraceAbstraction took 533856.44ms. Allocated memory was 182.5MB in the beginning and 9.7GB in the end (delta: 9.5GB). Free memory was 96.7MB in the beginning and 6.6GB in the end (delta: -6.5GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2024-06-04 16:37:50,511 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 134.2MB. Free memory was 95.2MB in the beginning and 95.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.03ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 56.5MB in the beginning and 141.6MB in the end (delta: -85.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.93ms. Allocated memory is still 182.5MB. Free memory was 141.6MB in the beginning and 138.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.93ms. Allocated memory is still 182.5MB. Free memory was 138.6MB in the beginning and 136.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 659.82ms. Allocated memory is still 182.5MB. Free memory was 136.5MB in the beginning and 96.7MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 533856.44ms. Allocated memory was 182.5MB in the beginning and 9.7GB in the end (delta: 9.5GB). Free memory was 96.7MB in the beginning and 6.6GB in the end (delta: -6.5GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 111]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 112]: 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, 65 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: 533.7s, OverallIterations: 157, TraceHistogramMax: 1, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 462.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16290 SdHoareTripleChecker+Valid, 28.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14687 mSDsluCounter, 8005 SdHoareTripleChecker+Invalid, 23.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6212 mSDsCounter, 2617 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53669 IncrementalHoareTripleChecker+Invalid, 56286 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2617 mSolverCounterUnsat, 1793 mSDtfsCounter, 53669 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2480 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6982 ImplicationChecksByTransitivity, 23.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9682occurred in iteration=136, InterpolantAutomatonStates: 2170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 69.3s InterpolantComputationTime, 3774 NumberOfCodeBlocks, 3774 NumberOfCodeBlocksAsserted, 157 NumberOfCheckSat, 3617 ConstructedInterpolants, 0 QuantifiedInterpolants, 49581 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 157 InterpolantComputations, 157 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 16:37:50,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE