./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.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/parallel-parallel-sum-equiv.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/parallel-parallel-sum-equiv.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-parallel-sum-equiv.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 17:01:04,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:01:04,705 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:01:04,710 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:01:04,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:01:04,739 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:01:04,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:01:04,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:01:04,740 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:01:04,743 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:01:04,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:01:04,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:01:04,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:01:04,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:01:04,746 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:01:04,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:01:04,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:01:04,747 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:01:04,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:01:04,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:01:04,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:01:04,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:01:04,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:01:04,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:01:04,748 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:01:04,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:01:04,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:01:04,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:01:04,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:01:04,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:01:04,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:01:04,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:01:04,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:01:04,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:01:04,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:01:04,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:01:04,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:01:04,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:01:04,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:01:04,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:01:04,752 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:01:04,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:01:04,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:01:04,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:01:04,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:01:04,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:01:04,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:01:04,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:01:04,978 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:01:04,979 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-01-31 17:01:06,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:01:06,199 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:01:06,200 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-01-31 17:01:06,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e1ee5cb/3a7715677d3c4b8ea6d76e49a2ec1b25/FLAG2790b5baf [2024-01-31 17:01:06,222 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e1ee5cb/3a7715677d3c4b8ea6d76e49a2ec1b25 [2024-01-31 17:01:06,224 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:01:06,224 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:01:06,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-parallel-sum-equiv.wvr.yml/witness.yml [2024-01-31 17:01:06,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:01:06,367 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:01:06,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:01:06,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:01:06,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:01:06,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:01:06" (1/2) ... [2024-01-31 17:01:06,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62069465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:01:06, skipping insertion in model container [2024-01-31 17:01:06,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:01:06" (1/2) ... [2024-01-31 17:01:06,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@aebd541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:01:06, skipping insertion in model container [2024-01-31 17:01:06,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:01:06" (2/2) ... [2024-01-31 17:01:06,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62069465 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:06, skipping insertion in model container [2024-01-31 17:01:06,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:01:06" (2/2) ... [2024-01-31 17:01:06,375 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:01:06,421 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:01:06,444 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:01:06,600 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/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-01-31 17:01:06,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:01:06,624 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:01:06,641 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/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-01-31 17:01:06,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:01:06,692 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:01:06,693 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:06 WrapperNode [2024-01-31 17:01:06,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:01:06,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:01:06,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:01:06,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:01:06,700 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,718 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,762 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 260 [2024-01-31 17:01:06,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:01:06,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:01:06,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:01:06,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:01:06,774 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,774 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,786 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,814 INFO L175 MemorySlicer]: Split 14 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 4]. 29 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 1, 1]. [2024-01-31 17:01:06,823 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,823 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,829 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,841 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,843 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,844 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:01:06,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:01:06,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:01:06,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:01:06,856 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 05:01:06" (1/1) ... [2024-01-31 17:01:06,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:01:06,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:06,885 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 17:01:06,914 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 17:01:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 17:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:01:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 17:01:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:01:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:01:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:01:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:01:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:01:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:01:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 17:01:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 17:01:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:01:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:01:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:01:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:01:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:01:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 17:01:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:01:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:01:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:01:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:01:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:01:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:01:06,937 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 17:01:07,062 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:01:07,064 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:01:07,399 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:01:07,400 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:01:07,625 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:01:07,625 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 17:01:07,626 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:01:07 BoogieIcfgContainer [2024-01-31 17:01:07,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:01:07,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:01:07,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:01:07,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:01:07,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:01:06" (1/4) ... [2024-01-31 17:01:07,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6574e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:01:07, skipping insertion in model container [2024-01-31 17:01:07,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:01:06" (2/4) ... [2024-01-31 17:01:07,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6574e1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:01:07, skipping insertion in model container [2024-01-31 17:01:07,631 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 05:01:06" (3/4) ... [2024-01-31 17:01:07,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6574e1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:01:07, skipping insertion in model container [2024-01-31 17:01:07,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:01:07" (4/4) ... [2024-01-31 17:01:07,633 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-01-31 17:01:07,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:01:07,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:01:07,646 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:01:07,731 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-01-31 17:01:07,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 62 transitions, 164 flow [2024-01-31 17:01:07,812 INFO L124 PetriNetUnfolderBase]: 9/54 cut-off events. [2024-01-31 17:01:07,813 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:01:07,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 54 events. 9/54 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 99 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 54. Up to 3 conditions per place. [2024-01-31 17:01:07,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 62 transitions, 164 flow [2024-01-31 17:01:07,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 53 transitions, 136 flow [2024-01-31 17:01:07,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:01:07,844 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;@40b25026, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:01:07,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-31 17:01:07,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:01:07,864 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-01-31 17:01:07,864 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:01:07,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:07,865 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, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:07,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:07,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1944011567, now seen corresponding path program 1 times [2024-01-31 17:01:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726454764] [2024-01-31 17:01:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:08,103 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 17:01:08,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726454764] [2024-01-31 17:01:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726454764] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:08,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:08,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:01:08,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718297074] [2024-01-31 17:01:08,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:08,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:01:08,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:01:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:01:08,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:08,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:08,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:08,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:08,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:09,073 INFO L124 PetriNetUnfolderBase]: 6308/8795 cut-off events. [2024-01-31 17:01:09,073 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-01-31 17:01:09,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17977 conditions, 8795 events. 6308/8795 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 47070 event pairs, 4929 based on Foata normal form. 1210/8524 useless extension candidates. Maximal degree in co-relation 17892. Up to 8399 conditions per place. [2024-01-31 17:01:09,125 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 43 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-01-31 17:01:09,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 216 flow [2024-01-31 17:01:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:01:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:01:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2024-01-31 17:01:09,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-01-31 17:01:09,136 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 136 flow. Second operand 2 states and 68 transitions. [2024-01-31 17:01:09,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 216 flow [2024-01-31 17:01:09,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 196 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 17:01:09,149 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 110 flow [2024-01-31 17:01:09,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2024-01-31 17:01:09,154 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2024-01-31 17:01:09,154 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 110 flow [2024-01-31 17:01:09,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:09,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:09,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:09,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:01:09,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:09,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 405410714, now seen corresponding path program 1 times [2024-01-31 17:01:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248245241] [2024-01-31 17:01:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:09,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:09,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248245241] [2024-01-31 17:01:09,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248245241] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:09,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:09,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:01:09,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266233199] [2024-01-31 17:01:09,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:09,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:01:09,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:09,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:01:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:01:09,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:09,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:09,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:09,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:09,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:10,634 INFO L124 PetriNetUnfolderBase]: 14756/20385 cut-off events. [2024-01-31 17:01:10,636 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-01-31 17:01:10,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40482 conditions, 20385 events. 14756/20385 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 120762 event pairs, 6229 based on Foata normal form. 1/17107 useless extension candidates. Maximal degree in co-relation 40479. Up to 8609 conditions per place. [2024-01-31 17:01:10,719 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 105 selfloop transitions, 6 changer transitions 1/119 dead transitions. [2024-01-31 17:01:10,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 119 transitions, 488 flow [2024-01-31 17:01:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:01:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:01:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-01-31 17:01:10,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61328125 [2024-01-31 17:01:10,722 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 110 flow. Second operand 4 states and 157 transitions. [2024-01-31 17:01:10,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 119 transitions, 488 flow [2024-01-31 17:01:10,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 119 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:01:10,724 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 151 flow [2024-01-31 17:01:10,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2024-01-31 17:01:10,725 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2024-01-31 17:01:10,725 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 151 flow [2024-01-31 17:01:10,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:10,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:10,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:10,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:01:10,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:10,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1906066154, now seen corresponding path program 2 times [2024-01-31 17:01:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:10,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178981007] [2024-01-31 17:01:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:10,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:10,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178981007] [2024-01-31 17:01:10,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178981007] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:10,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:10,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:01:10,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391331969] [2024-01-31 17:01:10,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:10,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:01:10,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:10,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:01:10,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:01:10,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:10,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:10,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:10,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:10,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:12,785 INFO L124 PetriNetUnfolderBase]: 22404/30871 cut-off events. [2024-01-31 17:01:12,785 INFO L125 PetriNetUnfolderBase]: For 3680/3682 co-relation queries the response was YES. [2024-01-31 17:01:12,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66181 conditions, 30871 events. 22404/30871 cut-off events. For 3680/3682 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 192785 event pairs, 7515 based on Foata normal form. 1/26227 useless extension candidates. Maximal degree in co-relation 66175. Up to 15559 conditions per place. [2024-01-31 17:01:12,913 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 105 selfloop transitions, 10 changer transitions 1/123 dead transitions. [2024-01-31 17:01:12,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 123 transitions, 553 flow [2024-01-31 17:01:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:01:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:01:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-01-31 17:01:12,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-01-31 17:01:12,915 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 151 flow. Second operand 4 states and 156 transitions. [2024-01-31 17:01:12,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 123 transitions, 553 flow [2024-01-31 17:01:12,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 123 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:01:12,919 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 219 flow [2024-01-31 17:01:12,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-01-31 17:01:12,920 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-01-31 17:01:12,920 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 219 flow [2024-01-31 17:01:12,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:12,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:12,921 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:12,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:01:12,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:12,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1571024204, now seen corresponding path program 1 times [2024-01-31 17:01:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:12,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82525731] [2024-01-31 17:01:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:12,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:13,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:13,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82525731] [2024-01-31 17:01:13,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82525731] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:13,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:13,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:01:13,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692872280] [2024-01-31 17:01:13,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:13,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:01:13,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:13,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:01:13,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:01:13,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:13,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:13,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:13,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:13,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:15,587 INFO L124 PetriNetUnfolderBase]: 33993/47095 cut-off events. [2024-01-31 17:01:15,587 INFO L125 PetriNetUnfolderBase]: For 16915/16925 co-relation queries the response was YES. [2024-01-31 17:01:15,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107509 conditions, 47095 events. 33993/47095 cut-off events. For 16915/16925 co-relation queries the response was YES. Maximal size of possible extension queue 2173. Compared 312910 event pairs, 21592 based on Foata normal form. 658/40703 useless extension candidates. Maximal degree in co-relation 107500. Up to 30007 conditions per place. [2024-01-31 17:01:15,763 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 123 selfloop transitions, 5 changer transitions 1/136 dead transitions. [2024-01-31 17:01:15,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 136 transitions, 722 flow [2024-01-31 17:01:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:01:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:01:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-01-31 17:01:15,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521875 [2024-01-31 17:01:15,768 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 219 flow. Second operand 5 states and 167 transitions. [2024-01-31 17:01:15,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 136 transitions, 722 flow [2024-01-31 17:01:15,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 136 transitions, 714 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-31 17:01:15,824 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 263 flow [2024-01-31 17:01:15,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-01-31 17:01:15,825 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-01-31 17:01:15,825 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 263 flow [2024-01-31 17:01:15,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:15,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:15,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:15,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:01:15,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:15,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash -847415862, now seen corresponding path program 1 times [2024-01-31 17:01:15,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:15,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159011087] [2024-01-31 17:01:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:15,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:15,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:15,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159011087] [2024-01-31 17:01:15,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159011087] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:15,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:15,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:01:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042688273] [2024-01-31 17:01:15,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:15,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:01:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:01:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:01:15,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:15,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:15,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:15,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:15,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:18,256 INFO L124 PetriNetUnfolderBase]: 26601/36836 cut-off events. [2024-01-31 17:01:18,257 INFO L125 PetriNetUnfolderBase]: For 15982/15992 co-relation queries the response was YES. [2024-01-31 17:01:18,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84929 conditions, 36836 events. 26601/36836 cut-off events. For 15982/15992 co-relation queries the response was YES. Maximal size of possible extension queue 1679. Compared 237650 event pairs, 20562 based on Foata normal form. 578/31733 useless extension candidates. Maximal degree in co-relation 84916. Up to 30007 conditions per place. [2024-01-31 17:01:18,450 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 53 selfloop transitions, 2 changer transitions 43/105 dead transitions. [2024-01-31 17:01:18,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 562 flow [2024-01-31 17:01:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:01:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:01:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-01-31 17:01:18,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-01-31 17:01:18,452 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 263 flow. Second operand 5 states and 143 transitions. [2024-01-31 17:01:18,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 562 flow [2024-01-31 17:01:18,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 105 transitions, 558 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:01:18,464 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 241 flow [2024-01-31 17:01:18,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-01-31 17:01:18,466 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-01-31 17:01:18,466 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 241 flow [2024-01-31 17:01:18,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:18,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:18,467 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:18,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:01:18,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:18,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash -563062872, now seen corresponding path program 1 times [2024-01-31 17:01:18,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:18,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801681938] [2024-01-31 17:01:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:18,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:18,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:18,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801681938] [2024-01-31 17:01:18,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801681938] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:18,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573535779] [2024-01-31 17:01:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:18,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:18,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:18,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:18,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:01:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:18,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:01:18,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:19,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:19,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573535779] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:01:19,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:01:19,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-01-31 17:01:19,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283227455] [2024-01-31 17:01:19,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:01:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 17:01:19,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 17:01:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:01:19,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:19,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 241 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 17:01:19,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:19,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:19,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:22,237 INFO L124 PetriNetUnfolderBase]: 33993/47000 cut-off events. [2024-01-31 17:01:22,237 INFO L125 PetriNetUnfolderBase]: For 24877/24887 co-relation queries the response was YES. [2024-01-31 17:01:22,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112016 conditions, 47000 events. 33993/47000 cut-off events. For 24877/24887 co-relation queries the response was YES. Maximal size of possible extension queue 2173. Compared 314966 event pairs, 15988 based on Foata normal form. 658/40630 useless extension candidates. Maximal degree in co-relation 112001. Up to 21139 conditions per place. [2024-01-31 17:01:22,461 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 157 selfloop transitions, 7 changer transitions 1/172 dead transitions. [2024-01-31 17:01:22,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 172 transitions, 967 flow [2024-01-31 17:01:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:01:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:01:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-01-31 17:01:22,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2024-01-31 17:01:22,463 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 241 flow. Second operand 7 states and 218 transitions. [2024-01-31 17:01:22,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 172 transitions, 967 flow [2024-01-31 17:01:22,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 172 transitions, 941 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-01-31 17:01:22,528 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 290 flow [2024-01-31 17:01:22,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-01-31 17:01:22,531 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-01-31 17:01:22,531 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 290 flow [2024-01-31 17:01:22,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 17:01:22,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:22,533 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:22,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 17:01:22,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-01-31 17:01:22,747 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:22,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash 858617304, now seen corresponding path program 1 times [2024-01-31 17:01:22,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467821228] [2024-01-31 17:01:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:22,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467821228] [2024-01-31 17:01:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467821228] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119091744] [2024-01-31 17:01:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:22,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:22,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:22,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:22,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:01:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:22,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:01:22,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:23,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:23,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119091744] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:01:23,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:01:23,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-01-31 17:01:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474065732] [2024-01-31 17:01:23,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:01:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 17:01:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 17:01:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:01:23,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:23,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 17:01:23,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:23,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:23,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:25,482 INFO L124 PetriNetUnfolderBase]: 25921/36085 cut-off events. [2024-01-31 17:01:25,482 INFO L125 PetriNetUnfolderBase]: For 19808/19818 co-relation queries the response was YES. [2024-01-31 17:01:25,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87376 conditions, 36085 events. 25921/36085 cut-off events. For 19808/19818 co-relation queries the response was YES. Maximal size of possible extension queue 1679. Compared 235493 event pairs, 10564 based on Foata normal form. 1258/31684 useless extension candidates. Maximal degree in co-relation 87361. Up to 16234 conditions per place. [2024-01-31 17:01:25,610 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 80 selfloop transitions, 5 changer transitions 45/137 dead transitions. [2024-01-31 17:01:25,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 137 transitions, 793 flow [2024-01-31 17:01:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:01:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:01:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-01-31 17:01:25,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-01-31 17:01:25,614 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 290 flow. Second operand 7 states and 189 transitions. [2024-01-31 17:01:25,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 137 transitions, 793 flow [2024-01-31 17:01:25,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 137 transitions, 785 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-31 17:01:25,641 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 284 flow [2024-01-31 17:01:25,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2024-01-31 17:01:25,643 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-01-31 17:01:25,643 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 284 flow [2024-01-31 17:01:25,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 17:01:25,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:25,643 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:25,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:01:25,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-01-31 17:01:25,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:25,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:25,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2101424866, now seen corresponding path program 2 times [2024-01-31 17:01:25,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:25,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278254085] [2024-01-31 17:01:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:25,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:01:26,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:26,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278254085] [2024-01-31 17:01:26,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278254085] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:26,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110209294] [2024-01-31 17:01:26,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:01:26,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:26,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:26,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:26,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:01:26,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:01:26,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:01:26,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:01:26,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:01:26,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:01:26,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110209294] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:26,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:01:26,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-01-31 17:01:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344525052] [2024-01-31 17:01:26,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:26,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:01:26,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:01:26,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:01:26,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:26,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 17:01:26,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:26,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:26,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:27,788 INFO L124 PetriNetUnfolderBase]: 16534/22840 cut-off events. [2024-01-31 17:01:27,788 INFO L125 PetriNetUnfolderBase]: For 21083/21088 co-relation queries the response was YES. [2024-01-31 17:01:27,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62068 conditions, 22840 events. 16534/22840 cut-off events. For 21083/21088 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 137484 event pairs, 7813 based on Foata normal form. 562/19789 useless extension candidates. Maximal degree in co-relation 62049. Up to 18812 conditions per place. [2024-01-31 17:01:27,889 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 72 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2024-01-31 17:01:27,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 524 flow [2024-01-31 17:01:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:01:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:01:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-01-31 17:01:27,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-01-31 17:01:27,891 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 284 flow. Second operand 6 states and 132 transitions. [2024-01-31 17:01:27,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 524 flow [2024-01-31 17:01:27,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 86 transitions, 478 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-01-31 17:01:27,930 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 286 flow [2024-01-31 17:01:27,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-01-31 17:01:27,930 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-01-31 17:01:27,930 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 286 flow [2024-01-31 17:01:27,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 17:01:27,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:27,931 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:27,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:01:28,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:28,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:28,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1559523336, now seen corresponding path program 2 times [2024-01-31 17:01:28,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:28,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15134581] [2024-01-31 17:01:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:28,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:28,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:01:28,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:28,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15134581] [2024-01-31 17:01:28,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15134581] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:28,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707434547] [2024-01-31 17:01:28,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:01:28,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:28,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:28,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:28,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:01:28,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:01:28,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:01:28,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:01:28,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:01:28,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:01:28,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707434547] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:28,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:01:28,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-01-31 17:01:28,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578251508] [2024-01-31 17:01:28,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:28,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:01:28,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:28,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:01:28,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:01:28,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:28,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 17:01:28,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:28,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:28,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:29,978 INFO L124 PetriNetUnfolderBase]: 13806/19275 cut-off events. [2024-01-31 17:01:29,978 INFO L125 PetriNetUnfolderBase]: For 13628/13633 co-relation queries the response was YES. [2024-01-31 17:01:30,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50396 conditions, 19275 events. 13806/19275 cut-off events. For 13628/13633 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 114155 event pairs, 7701 based on Foata normal form. 462/16592 useless extension candidates. Maximal degree in co-relation 50381. Up to 13146 conditions per place. [2024-01-31 17:01:30,043 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 92 selfloop transitions, 6 changer transitions 1/106 dead transitions. [2024-01-31 17:01:30,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 641 flow [2024-01-31 17:01:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:01:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:01:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-01-31 17:01:30,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-01-31 17:01:30,044 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 286 flow. Second operand 6 states and 143 transitions. [2024-01-31 17:01:30,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 641 flow [2024-01-31 17:01:30,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 106 transitions, 612 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-31 17:01:30,054 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 289 flow [2024-01-31 17:01:30,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-01-31 17:01:30,054 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-01-31 17:01:30,055 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 289 flow [2024-01-31 17:01:30,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 17:01:30,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:30,055 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:30,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:01:30,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:30,266 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:30,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1932435797, now seen corresponding path program 1 times [2024-01-31 17:01:30,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:30,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656633319] [2024-01-31 17:01:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:30,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:30,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656633319] [2024-01-31 17:01:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656633319] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790006774] [2024-01-31 17:01:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:30,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:30,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:30,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:30,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 17:01:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:30,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 17:01:30,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:31,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-01-31 17:01:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:31,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:31,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:01:31,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-01-31 17:01:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:31,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790006774] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:01:31,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:01:31,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-01-31 17:01:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180114057] [2024-01-31 17:01:31,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:01:31,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 17:01:31,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 17:01:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:01:31,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:31,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 15.571428571428571) internal successors, (218), 14 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 17:01:31,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:31,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:31,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:34,296 INFO L124 PetriNetUnfolderBase]: 24882/34703 cut-off events. [2024-01-31 17:01:34,297 INFO L125 PetriNetUnfolderBase]: For 23230/23235 co-relation queries the response was YES. [2024-01-31 17:01:34,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89538 conditions, 34703 events. 24882/34703 cut-off events. For 23230/23235 co-relation queries the response was YES. Maximal size of possible extension queue 1221. Compared 221824 event pairs, 6845 based on Foata normal form. 1/29270 useless extension candidates. Maximal degree in co-relation 89522. Up to 11497 conditions per place. [2024-01-31 17:01:34,478 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 330 selfloop transitions, 35 changer transitions 3/375 dead transitions. [2024-01-31 17:01:34,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 375 transitions, 2069 flow [2024-01-31 17:01:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 17:01:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 17:01:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 481 transitions. [2024-01-31 17:01:34,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368303571428571 [2024-01-31 17:01:34,482 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 289 flow. Second operand 14 states and 481 transitions. [2024-01-31 17:01:34,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 375 transitions, 2069 flow [2024-01-31 17:01:34,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 375 transitions, 2059 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:01:34,505 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 552 flow [2024-01-31 17:01:34,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=552, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2024-01-31 17:01:34,506 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2024-01-31 17:01:34,507 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 552 flow [2024-01-31 17:01:34,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.571428571428571) internal successors, (218), 14 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 17:01:34,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:34,507 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:34,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 17:01:34,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-01-31 17:01:34,721 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:34,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:34,737 INFO L85 PathProgramCache]: Analyzing trace with hash -794310391, now seen corresponding path program 2 times [2024-01-31 17:01:34,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:34,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123721519] [2024-01-31 17:01:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:35,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:35,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123721519] [2024-01-31 17:01:35,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123721519] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:35,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129228206] [2024-01-31 17:01:35,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:01:35,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:35,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:35,276 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:35,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 17:01:35,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:01:35,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:01:35,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 32 conjunts are in the unsatisfiable core [2024-01-31 17:01:35,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:35,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:01:35,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-01-31 17:01:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:35,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:36,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:01:36,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 14 [2024-01-31 17:01:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129228206] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:01:36,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:01:36,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 29 [2024-01-31 17:01:36,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950389729] [2024-01-31 17:01:36,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:01:36,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-01-31 17:01:36,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-01-31 17:01:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-01-31 17:01:36,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:36,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 552 flow. Second operand has 30 states, 30 states have (on average 14.5) internal successors, (435), 30 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 17:01:36,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:36,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:36,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:48,153 INFO L124 PetriNetUnfolderBase]: 67158/94136 cut-off events. [2024-01-31 17:01:48,153 INFO L125 PetriNetUnfolderBase]: For 98722/98730 co-relation queries the response was YES. [2024-01-31 17:01:48,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258823 conditions, 94136 events. 67158/94136 cut-off events. For 98722/98730 co-relation queries the response was YES. Maximal size of possible extension queue 3473. Compared 678132 event pairs, 8895 based on Foata normal form. 5/79760 useless extension candidates. Maximal degree in co-relation 258801. Up to 23026 conditions per place. [2024-01-31 17:01:48,685 INFO L140 encePairwiseOnDemand]: 49/64 looper letters, 702 selfloop transitions, 203 changer transitions 58/970 dead transitions. [2024-01-31 17:01:48,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 970 transitions, 5946 flow [2024-01-31 17:01:48,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-01-31 17:01:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-01-31 17:01:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 1394 transitions. [2024-01-31 17:01:48,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-01-31 17:01:48,690 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 552 flow. Second operand 51 states and 1394 transitions. [2024-01-31 17:01:48,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 970 transitions, 5946 flow [2024-01-31 17:01:49,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 970 transitions, 5629 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-01-31 17:01:49,047 INFO L231 Difference]: Finished difference. Result has 158 places, 288 transitions, 2493 flow [2024-01-31 17:01:49,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=2493, PETRI_PLACES=158, PETRI_TRANSITIONS=288} [2024-01-31 17:01:49,047 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 101 predicate places. [2024-01-31 17:01:49,048 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 288 transitions, 2493 flow [2024-01-31 17:01:49,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 14.5) internal successors, (435), 30 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 17:01:49,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:49,048 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:49,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-31 17:01:49,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:49,260 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-01-31 17:01:49,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1907786077, now seen corresponding path program 1 times [2024-01-31 17:01:49,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:49,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420865298] [2024-01-31 17:01:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:49,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420865298] [2024-01-31 17:01:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420865298] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784838487] [2024-01-31 17:01:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:49,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:49,712 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:49,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 17:01:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:49,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 17:01:49,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:49,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-01-31 17:01:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:49,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:50,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:01:50,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-01-31 17:01:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784838487] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:01:50,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:01:50,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2024-01-31 17:01:50,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360192404] [2024-01-31 17:01:50,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:01:50,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-31 17:01:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-31 17:01:50,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-01-31 17:01:50,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-01-31 17:01:50,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 288 transitions, 2493 flow. Second operand has 17 states, 17 states have (on average 14.941176470588236) internal successors, (254), 17 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 17:01:50,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:50,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-01-31 17:01:50,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand