./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-word-trans.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/chl-word-trans.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-word-trans.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 --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:52:21,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:52:21,648 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:52:21,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:52:21,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:52:21,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:52:21,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:52:21,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:52:21,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:52:21,667 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:52:21,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:52:21,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:52:21,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:52:21,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:52:21,669 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:52:21,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:52:21,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:52:21,669 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:52:21,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:52:21,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:52:21,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:52:21,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:52:21,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:52:21,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:52:21,671 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:52:21,671 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:52:21,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:52:21,672 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:52:21,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:52:21,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:52:21,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:52:21,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:52:21,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:52:21,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:52:21,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:52:21,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:52:21,673 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:52:21,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:52:21,674 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:52:21,674 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:52:21,674 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:52:21,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:52:21,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:52:21,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:52:21,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:52:21,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:52:21,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:52:21,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:52:21,881 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:52:21,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2024-01-31 16:52:22,791 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:52:22,955 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:52:22,956 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2024-01-31 16:52:22,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41b6d645/14a003e12e544ef3a2342cf6848ef0d0/FLAGd58bf6eca [2024-01-31 16:52:22,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41b6d645/14a003e12e544ef3a2342cf6848ef0d0 [2024-01-31 16:52:22,993 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:52:22,993 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:52:22,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-word-trans.wvr.yml/witness.yml [2024-01-31 16:52:23,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:52:23,123 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:52:23,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:52:23,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:52:23,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:52:23,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:52:22" (1/2) ... [2024-01-31 16:52:23,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad13415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:52:23, skipping insertion in model container [2024-01-31 16:52:23,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:52:22" (1/2) ... [2024-01-31 16:52:23,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45ec66ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:52:23, skipping insertion in model container [2024-01-31 16:52:23,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:52:23" (2/2) ... [2024-01-31 16:52:23,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad13415 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23, skipping insertion in model container [2024-01-31 16:52:23,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:52:23" (2/2) ... [2024-01-31 16:52:23,131 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:52:23,183 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:52:23,184 INFO L98 nessWitnessExtractor]: Location invariant after [L87-L87] ((unsigned long )_argptr == 0UL) && (stop == (_Bool)0 || stop == (_Bool)1) [2024-01-31 16:52:23,184 INFO L98 nessWitnessExtractor]: Location invariant after [L47-L47] ((unsigned long )_argptr == 0UL) && (stop == (_Bool)0 || stop == (_Bool)1) [2024-01-31 16:52:23,184 INFO L98 nessWitnessExtractor]: Location invariant after [L67-L67] ((unsigned long )_argptr == 0UL) && (stop == (_Bool)0 || stop == (_Bool)1) [2024-01-31 16:52:23,205 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:52:23,342 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3331,3344] [2024-01-31 16:52:23,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:52:23,365 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:52:23,375 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:52:23,378 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:52:23,383 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:52:23,388 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3331,3344] [2024-01-31 16:52:23,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:52:23,401 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:52:23,401 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23 WrapperNode [2024-01-31 16:52:23,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:52:23,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:52:23,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:52:23,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:52:23,407 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 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,412 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 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,431 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 183 [2024-01-31 16:52:23,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:52:23,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:52:23,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:52:23,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:52:23,439 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,453 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 15, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2024-01-31 16:52:23,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:52:23,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:52:23,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:52:23,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:52:23,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (1/1) ... [2024-01-31 16:52:23,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:52:23,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:52:23,492 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) [2024-01-31 16:52:23,497 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 [2024-01-31 16:52:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:52:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:52:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:52:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:52:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:52:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:52:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:52:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:52:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:52:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:52:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:52:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:52:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:52:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:52:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:52:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:52:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:52:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:52:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:52:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:52:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:52:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:52:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:52:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:52:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:52:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:52:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:52:23,529 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:52:23,656 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:52:23,658 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:52:23,959 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:52:23,959 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:52:24,238 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:52:24,239 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:52:24,240 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:52:24 BoogieIcfgContainer [2024-01-31 16:52:24,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:52:24,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:52:24,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:52:24,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:52:24,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:52:22" (1/4) ... [2024-01-31 16:52:24,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2348fd3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:52:24, skipping insertion in model container [2024-01-31 16:52:24,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:52:23" (2/4) ... [2024-01-31 16:52:24,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2348fd3f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:52:24, skipping insertion in model container [2024-01-31 16:52:24,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:23" (3/4) ... [2024-01-31 16:52:24,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2348fd3f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:52:24, skipping insertion in model container [2024-01-31 16:52:24,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:52:24" (4/4) ... [2024-01-31 16:52:24,250 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-01-31 16:52:24,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:52:24,265 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:52:24,265 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:52:24,318 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:52:24,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2024-01-31 16:52:24,385 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2024-01-31 16:52:24,386 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:52:24,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-31 16:52:24,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2024-01-31 16:52:24,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-01-31 16:52:24,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:52:24,406 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;@502a5093, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:52:24,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:52:24,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:52:24,421 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-01-31 16:52:24,422 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:52:24,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:24,422 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] [2024-01-31 16:52:24,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:24,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:24,427 INFO L85 PathProgramCache]: Analyzing trace with hash 156581823, now seen corresponding path program 1 times [2024-01-31 16:52:24,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872231857] [2024-01-31 16:52:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:24,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:25,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:25,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872231857] [2024-01-31 16:52:25,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872231857] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:25,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:25,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:25,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457150615] [2024-01-31 16:52:25,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:25,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:25,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:25,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:25,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:25,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:25,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:25,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:25,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:25,851 INFO L124 PetriNetUnfolderBase]: 4644/6290 cut-off events. [2024-01-31 16:52:25,851 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2024-01-31 16:52:25,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12850 conditions, 6290 events. 4644/6290 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 26817 event pairs, 1292 based on Foata normal form. 1/4654 useless extension candidates. Maximal degree in co-relation 11342. Up to 2790 conditions per place. [2024-01-31 16:52:25,888 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 101 selfloop transitions, 13 changer transitions 1/116 dead transitions. [2024-01-31 16:52:25,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 116 transitions, 507 flow [2024-01-31 16:52:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:25,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-01-31 16:52:25,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-31 16:52:25,902 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 5 states and 136 transitions. [2024-01-31 16:52:25,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 116 transitions, 507 flow [2024-01-31 16:52:25,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 116 transitions, 477 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:52:25,918 INFO L231 Difference]: Finished difference. Result has 46 places, 57 transitions, 178 flow [2024-01-31 16:52:25,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=46, PETRI_TRANSITIONS=57} [2024-01-31 16:52:25,923 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2024-01-31 16:52:25,924 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 57 transitions, 178 flow [2024-01-31 16:52:25,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:25,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:25,924 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] [2024-01-31 16:52:25,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:52:25,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:25,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1349175001, now seen corresponding path program 2 times [2024-01-31 16:52:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374106508] [2024-01-31 16:52:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:26,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374106508] [2024-01-31 16:52:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374106508] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:26,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:26,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772076955] [2024-01-31 16:52:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:26,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:26,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:26,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 57 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:26,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:26,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:26,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:26,878 INFO L124 PetriNetUnfolderBase]: 6056/8405 cut-off events. [2024-01-31 16:52:26,878 INFO L125 PetriNetUnfolderBase]: For 1831/1831 co-relation queries the response was YES. [2024-01-31 16:52:26,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19935 conditions, 8405 events. 6056/8405 cut-off events. For 1831/1831 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 40170 event pairs, 2727 based on Foata normal form. 1/7091 useless extension candidates. Maximal degree in co-relation 16739. Up to 4843 conditions per place. [2024-01-31 16:52:26,911 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 114 selfloop transitions, 7 changer transitions 3/125 dead transitions. [2024-01-31 16:52:26,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 125 transitions, 626 flow [2024-01-31 16:52:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-01-31 16:52:26,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2024-01-31 16:52:26,921 INFO L175 Difference]: Start difference. First operand has 46 places, 57 transitions, 178 flow. Second operand 5 states and 131 transitions. [2024-01-31 16:52:26,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 125 transitions, 626 flow [2024-01-31 16:52:26,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 125 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:52:26,933 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 235 flow [2024-01-31 16:52:26,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2024-01-31 16:52:26,933 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-01-31 16:52:26,933 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 235 flow [2024-01-31 16:52:26,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:26,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:26,934 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] [2024-01-31 16:52:26,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:52:26,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:26,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2073642059, now seen corresponding path program 3 times [2024-01-31 16:52:26,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:26,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132953466] [2024-01-31 16:52:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:26,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:27,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:27,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132953466] [2024-01-31 16:52:27,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132953466] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:27,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:27,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:27,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745417859] [2024-01-31 16:52:27,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:27,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:27,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:27,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:27,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:27,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:27,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:27,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:27,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:27,911 INFO L124 PetriNetUnfolderBase]: 7156/10075 cut-off events. [2024-01-31 16:52:27,912 INFO L125 PetriNetUnfolderBase]: For 5721/5721 co-relation queries the response was YES. [2024-01-31 16:52:27,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25248 conditions, 10075 events. 7156/10075 cut-off events. For 5721/5721 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 51048 event pairs, 3919 based on Foata normal form. 1/8845 useless extension candidates. Maximal degree in co-relation 17789. Up to 7387 conditions per place. [2024-01-31 16:52:27,953 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 116 selfloop transitions, 8 changer transitions 3/128 dead transitions. [2024-01-31 16:52:27,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 128 transitions, 710 flow [2024-01-31 16:52:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-01-31 16:52:27,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2024-01-31 16:52:27,955 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 235 flow. Second operand 5 states and 129 transitions. [2024-01-31 16:52:27,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 128 transitions, 710 flow [2024-01-31 16:52:27,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 128 transitions, 700 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-31 16:52:27,981 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 309 flow [2024-01-31 16:52:27,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2024-01-31 16:52:27,982 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-01-31 16:52:27,982 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 309 flow [2024-01-31 16:52:27,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:27,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:27,982 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] [2024-01-31 16:52:27,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:52:27,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:27,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1616001425, now seen corresponding path program 4 times [2024-01-31 16:52:27,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:27,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815649228] [2024-01-31 16:52:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:27,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:28,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:28,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815649228] [2024-01-31 16:52:28,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815649228] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:28,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:28,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003706649] [2024-01-31 16:52:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:28,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:28,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:28,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:28,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:28,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:28,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:29,052 INFO L124 PetriNetUnfolderBase]: 7374/10352 cut-off events. [2024-01-31 16:52:29,053 INFO L125 PetriNetUnfolderBase]: For 9584/9584 co-relation queries the response was YES. [2024-01-31 16:52:29,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27372 conditions, 10352 events. 7374/10352 cut-off events. For 9584/9584 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 52224 event pairs, 3439 based on Foata normal form. 1/9088 useless extension candidates. Maximal degree in co-relation 19870. Up to 5975 conditions per place. [2024-01-31 16:52:29,093 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 114 selfloop transitions, 20 changer transitions 1/136 dead transitions. [2024-01-31 16:52:29,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 136 transitions, 807 flow [2024-01-31 16:52:29,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:29,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-01-31 16:52:29,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2024-01-31 16:52:29,095 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 309 flow. Second operand 5 states and 139 transitions. [2024-01-31 16:52:29,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 136 transitions, 807 flow [2024-01-31 16:52:29,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 136 transitions, 791 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 16:52:29,126 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 468 flow [2024-01-31 16:52:29,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=468, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2024-01-31 16:52:29,126 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-01-31 16:52:29,127 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 468 flow [2024-01-31 16:52:29,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:29,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:29,127 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] [2024-01-31 16:52:29,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:52:29,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:29,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2116669345, now seen corresponding path program 5 times [2024-01-31 16:52:29,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:29,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121664885] [2024-01-31 16:52:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:29,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:29,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:29,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121664885] [2024-01-31 16:52:29,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121664885] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122688375] [2024-01-31 16:52:29,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:29,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:29,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:29,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:29,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:29,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:29,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:29,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:30,242 INFO L124 PetriNetUnfolderBase]: 8054/11336 cut-off events. [2024-01-31 16:52:30,242 INFO L125 PetriNetUnfolderBase]: For 17521/17521 co-relation queries the response was YES. [2024-01-31 16:52:30,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32396 conditions, 11336 events. 8054/11336 cut-off events. For 17521/17521 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 58816 event pairs, 3985 based on Foata normal form. 1/9932 useless extension candidates. Maximal degree in co-relation 23537. Up to 7735 conditions per place. [2024-01-31 16:52:30,293 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 130 selfloop transitions, 22 changer transitions 1/154 dead transitions. [2024-01-31 16:52:30,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 154 transitions, 1075 flow [2024-01-31 16:52:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-01-31 16:52:30,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2024-01-31 16:52:30,295 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 468 flow. Second operand 5 states and 137 transitions. [2024-01-31 16:52:30,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 154 transitions, 1075 flow [2024-01-31 16:52:30,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 154 transitions, 1011 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-01-31 16:52:30,366 INFO L231 Difference]: Finished difference. Result has 72 places, 88 transitions, 627 flow [2024-01-31 16:52:30,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=72, PETRI_TRANSITIONS=88} [2024-01-31 16:52:30,367 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-01-31 16:52:30,367 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 88 transitions, 627 flow [2024-01-31 16:52:30,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:30,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:30,367 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] [2024-01-31 16:52:30,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:52:30,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:30,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash -288130251, now seen corresponding path program 6 times [2024-01-31 16:52:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:30,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478687593] [2024-01-31 16:52:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:30,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:30,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:30,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478687593] [2024-01-31 16:52:30,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478687593] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:30,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:30,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:30,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077752016] [2024-01-31 16:52:30,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:30,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:30,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:30,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:30,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:30,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:30,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 627 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:30,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:30,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:30,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:31,362 INFO L124 PetriNetUnfolderBase]: 8226/11566 cut-off events. [2024-01-31 16:52:31,362 INFO L125 PetriNetUnfolderBase]: For 21444/21444 co-relation queries the response was YES. [2024-01-31 16:52:31,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34277 conditions, 11566 events. 8226/11566 cut-off events. For 21444/21444 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 59798 event pairs, 2584 based on Foata normal form. 1/10370 useless extension candidates. Maximal degree in co-relation 32943. Up to 5432 conditions per place. [2024-01-31 16:52:31,422 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 113 selfloop transitions, 45 changer transitions 1/160 dead transitions. [2024-01-31 16:52:31,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 160 transitions, 1213 flow [2024-01-31 16:52:31,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-01-31 16:52:31,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-31 16:52:31,423 INFO L175 Difference]: Start difference. First operand has 72 places, 88 transitions, 627 flow. Second operand 5 states and 136 transitions. [2024-01-31 16:52:31,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 160 transitions, 1213 flow [2024-01-31 16:52:31,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 160 transitions, 1208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:52:31,501 INFO L231 Difference]: Finished difference. Result has 78 places, 102 transitions, 883 flow [2024-01-31 16:52:31,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=883, PETRI_PLACES=78, PETRI_TRANSITIONS=102} [2024-01-31 16:52:31,502 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-01-31 16:52:31,502 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 102 transitions, 883 flow [2024-01-31 16:52:31,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:31,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:31,502 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] [2024-01-31 16:52:31,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:52:31,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:31,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:31,503 INFO L85 PathProgramCache]: Analyzing trace with hash 3162044, now seen corresponding path program 1 times [2024-01-31 16:52:31,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:31,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2590599] [2024-01-31 16:52:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:31,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:31,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:31,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2590599] [2024-01-31 16:52:31,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2590599] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:31,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:31,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160262690] [2024-01-31 16:52:31,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:31,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:52:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:31,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:52:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:52:31,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:31,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 102 transitions, 883 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:31,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:31,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:31,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:33,156 INFO L124 PetriNetUnfolderBase]: 14764/20504 cut-off events. [2024-01-31 16:52:33,156 INFO L125 PetriNetUnfolderBase]: For 53199/53199 co-relation queries the response was YES. [2024-01-31 16:52:33,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66908 conditions, 20504 events. 14764/20504 cut-off events. For 53199/53199 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 113415 event pairs, 5928 based on Foata normal form. 5/18358 useless extension candidates. Maximal degree in co-relation 64325. Up to 7755 conditions per place. [2024-01-31 16:52:33,261 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 166 selfloop transitions, 23 changer transitions 39/229 dead transitions. [2024-01-31 16:52:33,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 229 transitions, 2203 flow [2024-01-31 16:52:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:52:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:52:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-01-31 16:52:33,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-01-31 16:52:33,263 INFO L175 Difference]: Start difference. First operand has 78 places, 102 transitions, 883 flow. Second operand 6 states and 160 transitions. [2024-01-31 16:52:33,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 229 transitions, 2203 flow [2024-01-31 16:52:33,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 229 transitions, 2107 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-01-31 16:52:33,542 INFO L231 Difference]: Finished difference. Result has 86 places, 113 transitions, 1007 flow [2024-01-31 16:52:33,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1007, PETRI_PLACES=86, PETRI_TRANSITIONS=113} [2024-01-31 16:52:33,544 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2024-01-31 16:52:33,544 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 113 transitions, 1007 flow [2024-01-31 16:52:33,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:33,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:33,545 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, 1] [2024-01-31 16:52:33,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:52:33,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:33,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2043538756, now seen corresponding path program 1 times [2024-01-31 16:52:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438855558] [2024-01-31 16:52:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:33,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:33,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438855558] [2024-01-31 16:52:33,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438855558] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:33,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:33,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:33,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100803249] [2024-01-31 16:52:33,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:33,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:33,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:33,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:33,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:33,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 113 transitions, 1007 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:33,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:33,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:33,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:35,259 INFO L124 PetriNetUnfolderBase]: 14088/19676 cut-off events. [2024-01-31 16:52:35,259 INFO L125 PetriNetUnfolderBase]: For 52562/52562 co-relation queries the response was YES. [2024-01-31 16:52:35,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65877 conditions, 19676 events. 14088/19676 cut-off events. For 52562/52562 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 107998 event pairs, 4238 based on Foata normal form. 1/17610 useless extension candidates. Maximal degree in co-relation 65754. Up to 9426 conditions per place. [2024-01-31 16:52:35,359 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 177 selfloop transitions, 18 changer transitions 16/212 dead transitions. [2024-01-31 16:52:35,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 212 transitions, 2090 flow [2024-01-31 16:52:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-01-31 16:52:35,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-01-31 16:52:35,361 INFO L175 Difference]: Start difference. First operand has 86 places, 113 transitions, 1007 flow. Second operand 5 states and 135 transitions. [2024-01-31 16:52:35,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 212 transitions, 2090 flow [2024-01-31 16:52:35,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 212 transitions, 2035 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 16:52:35,587 INFO L231 Difference]: Finished difference. Result has 90 places, 120 transitions, 1121 flow [2024-01-31 16:52:35,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1121, PETRI_PLACES=90, PETRI_TRANSITIONS=120} [2024-01-31 16:52:35,588 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-01-31 16:52:35,588 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 120 transitions, 1121 flow [2024-01-31 16:52:35,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:35,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:35,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:52:35,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:52:35,589 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:35,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:35,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1100579122, now seen corresponding path program 2 times [2024-01-31 16:52:35,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:35,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802014693] [2024-01-31 16:52:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:35,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:35,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:35,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802014693] [2024-01-31 16:52:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802014693] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:35,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262840241] [2024-01-31 16:52:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:35,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:35,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:35,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 120 transitions, 1121 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:35,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:35,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:35,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:37,288 INFO L124 PetriNetUnfolderBase]: 13810/19269 cut-off events. [2024-01-31 16:52:37,289 INFO L125 PetriNetUnfolderBase]: For 71365/71365 co-relation queries the response was YES. [2024-01-31 16:52:37,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65040 conditions, 19269 events. 13810/19269 cut-off events. For 71365/71365 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 105440 event pairs, 6798 based on Foata normal form. 1/17541 useless extension candidates. Maximal degree in co-relation 60327. Up to 11148 conditions per place. [2024-01-31 16:52:37,412 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 146 selfloop transitions, 12 changer transitions 19/178 dead transitions. [2024-01-31 16:52:37,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 178 transitions, 1667 flow [2024-01-31 16:52:37,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-01-31 16:52:37,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-31 16:52:37,414 INFO L175 Difference]: Start difference. First operand has 90 places, 120 transitions, 1121 flow. Second operand 5 states and 130 transitions. [2024-01-31 16:52:37,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 178 transitions, 1667 flow [2024-01-31 16:52:37,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 178 transitions, 1630 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-01-31 16:52:37,737 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 1067 flow [2024-01-31 16:52:37,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1067, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-01-31 16:52:37,738 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-01-31 16:52:37,738 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 1067 flow [2024-01-31 16:52:37,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:37,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:37,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:52:37,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:52:37,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:37,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash 708407042, now seen corresponding path program 3 times [2024-01-31 16:52:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:37,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958481624] [2024-01-31 16:52:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:37,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:37,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958481624] [2024-01-31 16:52:37,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958481624] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:37,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:37,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:37,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733443851] [2024-01-31 16:52:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:37,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:37,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:37,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 1067 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:37,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:37,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:37,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:39,437 INFO L124 PetriNetUnfolderBase]: 13896/19376 cut-off events. [2024-01-31 16:52:39,438 INFO L125 PetriNetUnfolderBase]: For 70298/70298 co-relation queries the response was YES. [2024-01-31 16:52:39,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65454 conditions, 19376 events. 13896/19376 cut-off events. For 70298/70298 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 105847 event pairs, 6416 based on Foata normal form. 1/17626 useless extension candidates. Maximal degree in co-relation 65369. Up to 11148 conditions per place. [2024-01-31 16:52:39,561 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 162 selfloop transitions, 18 changer transitions 14/195 dead transitions. [2024-01-31 16:52:39,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 195 transitions, 1834 flow [2024-01-31 16:52:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-01-31 16:52:39,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2024-01-31 16:52:39,562 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 1067 flow. Second operand 5 states and 139 transitions. [2024-01-31 16:52:39,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 195 transitions, 1834 flow [2024-01-31 16:52:39,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 195 transitions, 1800 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-31 16:52:39,857 INFO L231 Difference]: Finished difference. Result has 94 places, 119 transitions, 1079 flow [2024-01-31 16:52:39,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1079, PETRI_PLACES=94, PETRI_TRANSITIONS=119} [2024-01-31 16:52:39,857 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-01-31 16:52:39,857 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 119 transitions, 1079 flow [2024-01-31 16:52:39,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:39,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:39,858 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] [2024-01-31 16:52:39,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:52:39,858 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:39,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:39,858 INFO L85 PathProgramCache]: Analyzing trace with hash -133705151, now seen corresponding path program 1 times [2024-01-31 16:52:39,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:39,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655418195] [2024-01-31 16:52:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:39,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:39,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:39,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655418195] [2024-01-31 16:52:39,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655418195] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:39,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:39,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246225592] [2024-01-31 16:52:39,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:39,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:52:39,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:52:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:52:39,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:39,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 119 transitions, 1079 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:40,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:40,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:40,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:42,320 INFO L124 PetriNetUnfolderBase]: 23027/31691 cut-off events. [2024-01-31 16:52:42,320 INFO L125 PetriNetUnfolderBase]: For 130969/130969 co-relation queries the response was YES. [2024-01-31 16:52:42,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111009 conditions, 31691 events. 23027/31691 cut-off events. For 130969/130969 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 181433 event pairs, 8452 based on Foata normal form. 5/28834 useless extension candidates. Maximal degree in co-relation 106873. Up to 13997 conditions per place. [2024-01-31 16:52:42,537 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 189 selfloop transitions, 30 changer transitions 10/230 dead transitions. [2024-01-31 16:52:42,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 230 transitions, 2423 flow [2024-01-31 16:52:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:52:42,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:52:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-01-31 16:52:42,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542483660130719 [2024-01-31 16:52:42,538 INFO L175 Difference]: Start difference. First operand has 94 places, 119 transitions, 1079 flow. Second operand 6 states and 139 transitions. [2024-01-31 16:52:42,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 230 transitions, 2423 flow [2024-01-31 16:52:43,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 230 transitions, 2347 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-01-31 16:52:43,173 INFO L231 Difference]: Finished difference. Result has 99 places, 135 transitions, 1331 flow [2024-01-31 16:52:43,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1331, PETRI_PLACES=99, PETRI_TRANSITIONS=135} [2024-01-31 16:52:43,174 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 54 predicate places. [2024-01-31 16:52:43,174 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 135 transitions, 1331 flow [2024-01-31 16:52:43,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:43,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:43,175 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] [2024-01-31 16:52:43,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:52:43,175 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:43,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash 487248546, now seen corresponding path program 4 times [2024-01-31 16:52:43,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:43,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304388434] [2024-01-31 16:52:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:43,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:43,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:43,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304388434] [2024-01-31 16:52:43,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304388434] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:43,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:43,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:43,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526972540] [2024-01-31 16:52:43,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:43,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:43,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:43,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:43,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 135 transitions, 1331 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:43,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:43,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:43,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:46,075 INFO L124 PetriNetUnfolderBase]: 20299/27878 cut-off events. [2024-01-31 16:52:46,075 INFO L125 PetriNetUnfolderBase]: For 111612/111612 co-relation queries the response was YES. [2024-01-31 16:52:46,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100706 conditions, 27878 events. 20299/27878 cut-off events. For 111612/111612 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 153543 event pairs, 11924 based on Foata normal form. 1/25255 useless extension candidates. Maximal degree in co-relation 96645. Up to 22690 conditions per place. [2024-01-31 16:52:46,248 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 159 selfloop transitions, 10 changer transitions 21/191 dead transitions. [2024-01-31 16:52:46,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 191 transitions, 1877 flow [2024-01-31 16:52:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-01-31 16:52:46,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2024-01-31 16:52:46,249 INFO L175 Difference]: Start difference. First operand has 99 places, 135 transitions, 1331 flow. Second operand 5 states and 128 transitions. [2024-01-31 16:52:46,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 191 transitions, 1877 flow [2024-01-31 16:52:46,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 191 transitions, 1840 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:52:46,701 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 1225 flow [2024-01-31 16:52:46,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1225, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2024-01-31 16:52:46,702 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-01-31 16:52:46,702 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 1225 flow [2024-01-31 16:52:46,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:46,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:46,703 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] [2024-01-31 16:52:46,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:52:46,703 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:46,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:46,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1900501384, now seen corresponding path program 5 times [2024-01-31 16:52:46,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:46,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098855846] [2024-01-31 16:52:46,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:46,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:46,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098855846] [2024-01-31 16:52:46,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098855846] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:46,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:46,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:46,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232583517] [2024-01-31 16:52:46,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:46,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:46,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:46,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:46,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:46,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:46,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 1225 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:46,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:46,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:46,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:49,436 INFO L124 PetriNetUnfolderBase]: 20621/28371 cut-off events. [2024-01-31 16:52:49,436 INFO L125 PetriNetUnfolderBase]: For 114444/114444 co-relation queries the response was YES. [2024-01-31 16:52:49,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100564 conditions, 28371 events. 20621/28371 cut-off events. For 114444/114444 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 156739 event pairs, 6396 based on Foata normal form. 1/25714 useless extension candidates. Maximal degree in co-relation 100486. Up to 15866 conditions per place. [2024-01-31 16:52:49,578 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 186 selfloop transitions, 15 changer transitions 12/214 dead transitions. [2024-01-31 16:52:49,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 214 transitions, 2104 flow [2024-01-31 16:52:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-01-31 16:52:49,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-01-31 16:52:49,579 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 1225 flow. Second operand 5 states and 135 transitions. [2024-01-31 16:52:49,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 214 transitions, 2104 flow [2024-01-31 16:52:50,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 214 transitions, 2054 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-01-31 16:52:50,005 INFO L231 Difference]: Finished difference. Result has 103 places, 138 transitions, 1332 flow [2024-01-31 16:52:50,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1332, PETRI_PLACES=103, PETRI_TRANSITIONS=138} [2024-01-31 16:52:50,006 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-01-31 16:52:50,006 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 138 transitions, 1332 flow [2024-01-31 16:52:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:50,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:50,006 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] [2024-01-31 16:52:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:52:50,006 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:50,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -57963486, now seen corresponding path program 6 times [2024-01-31 16:52:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219746229] [2024-01-31 16:52:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:50,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:50,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219746229] [2024-01-31 16:52:50,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219746229] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:50,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:50,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54361248] [2024-01-31 16:52:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:50,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:50,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:50,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:50,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:50,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:50,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 138 transitions, 1332 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:50,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:50,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:50,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:52,318 INFO L124 PetriNetUnfolderBase]: 20595/28330 cut-off events. [2024-01-31 16:52:52,318 INFO L125 PetriNetUnfolderBase]: For 126473/126473 co-relation queries the response was YES. [2024-01-31 16:52:52,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102434 conditions, 28330 events. 20595/28330 cut-off events. For 126473/126473 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 156664 event pairs, 11956 based on Foata normal form. 1/25663 useless extension candidates. Maximal degree in co-relation 75569. Up to 22690 conditions per place. [2024-01-31 16:52:52,517 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 180 selfloop transitions, 17 changer transitions 12/210 dead transitions. [2024-01-31 16:52:52,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 210 transitions, 2036 flow [2024-01-31 16:52:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-01-31 16:52:52,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-31 16:52:52,519 INFO L175 Difference]: Start difference. First operand has 103 places, 138 transitions, 1332 flow. Second operand 5 states and 136 transitions. [2024-01-31 16:52:52,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 210 transitions, 2036 flow [2024-01-31 16:52:52,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 210 transitions, 2015 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-01-31 16:52:52,897 INFO L231 Difference]: Finished difference. Result has 108 places, 140 transitions, 1334 flow [2024-01-31 16:52:52,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1334, PETRI_PLACES=108, PETRI_TRANSITIONS=140} [2024-01-31 16:52:52,898 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2024-01-31 16:52:52,899 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 140 transitions, 1334 flow [2024-01-31 16:52:52,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:52,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:52,899 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] [2024-01-31 16:52:52,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:52:52,900 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:52:52,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1222311232, now seen corresponding path program 1 times [2024-01-31 16:52:52,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:52,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917935724] [2024-01-31 16:52:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:52,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:52:53,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:53,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917935724] [2024-01-31 16:52:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917935724] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:53,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:53,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:53,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320066295] [2024-01-31 16:52:53,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:53,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:53,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:53,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:53,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:53,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-31 16:52:53,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 140 transitions, 1334 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:52:53,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:53,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-31 16:52:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand