./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-mult-4.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/popl20-mult-4.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/popl20-mult-4.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-mult-4.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 17:14:29,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:14:29,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:14:29,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:14:29,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:14:29,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:14:29,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:14:29,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:14:29,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:14:29,652 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:14:29,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:14:29,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:14:29,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:14:29,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:14:29,654 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:14:29,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:14:29,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:14:29,655 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:14:29,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:14:29,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:14:29,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:14:29,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:14:29,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:14:29,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:14:29,656 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:14:29,656 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:14:29,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:14:29,657 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:14:29,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:14:29,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:14:29,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:14:29,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:14:29,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:14:29,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:14:29,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:14:29,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:14:29,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:14:29,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:14:29,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:14:29,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:14:29,660 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:14:29,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:14:29,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:14:29,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:14:29,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:14:29,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:14:29,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:14:29,850 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:14:29,851 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:14:29,852 INFO L431 ainManager$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/popl20-mult-4.wvr.yml/witness.yml [2024-01-31 17:14:29,975 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:14:29,976 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:14:29,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2024-01-31 17:14:31,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:14:31,191 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:14:31,192 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2024-01-31 17:14:31,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8013703a7/0460ce4743134d9da601332ab19d6929/FLAG123c3c92b [2024-01-31 17:14:31,212 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8013703a7/0460ce4743134d9da601332ab19d6929 [2024-01-31 17:14:31,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:14:31,213 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:14:31,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:14:31,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:14:31,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:14:31,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:14:29" (1/2) ... [2024-01-31 17:14:31,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647469c8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:14:31, skipping insertion in model container [2024-01-31 17:14:31,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:14:29" (1/2) ... [2024-01-31 17:14:31,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e78e3f7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:14:31, skipping insertion in model container [2024-01-31 17:14:31,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:14:31" (2/2) ... [2024-01-31 17:14:31,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647469c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31, skipping insertion in model container [2024-01-31 17:14:31,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:14:31" (2/2) ... [2024-01-31 17:14:31,223 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:14:31,256 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:14:31,272 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:14:31,418 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/popl20-mult-4.wvr.c[2664,2677] [2024-01-31 17:14:31,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:14:31,432 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:14:31,462 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/popl20-mult-4.wvr.c[2664,2677] [2024-01-31 17:14:31,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:14:31,475 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:14:31,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31 WrapperNode [2024-01-31 17:14:31,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:14:31,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:14:31,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:14:31,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:14:31,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,494 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,516 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 122 [2024-01-31 17:14:31,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:14:31,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:14:31,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:14:31,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:14:31,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,552 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:14:31,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:14:31,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:14:31,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:14:31,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:14:31,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (1/1) ... [2024-01-31 17:14:31,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:14:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:14:31,618 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 17:14:31,657 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 17:14:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:14:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:14:31,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:14:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:14:31,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:14:31,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:14:31,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:14:31,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 17:14:31,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 17:14:31,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:14:31,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:14:31,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:14:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:14:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:14:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:14:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:14:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:14:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:14:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:14:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:14:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:14:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:14:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:14:31,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:14:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:14:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:14:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:14:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:14:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:14:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:14:31,684 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 17:14:31,789 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:14:31,791 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:14:31,944 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:14:31,944 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:14:32,079 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:14:32,079 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 17:14:32,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:14:32 BoogieIcfgContainer [2024-01-31 17:14:32,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:14:32,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:14:32,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:14:32,083 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:14:32,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:14:29" (1/4) ... [2024-01-31 17:14:32,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e83e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:14:32, skipping insertion in model container [2024-01-31 17:14:32,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:14:31" (2/4) ... [2024-01-31 17:14:32,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e83e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:14:32, skipping insertion in model container [2024-01-31 17:14:32,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:14:31" (3/4) ... [2024-01-31 17:14:32,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e83e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:14:32, skipping insertion in model container [2024-01-31 17:14:32,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:14:32" (4/4) ... [2024-01-31 17:14:32,086 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-01-31 17:14:32,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:14:32,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:14:32,138 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:14:32,195 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 17:14:32,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 43 transitions, 114 flow [2024-01-31 17:14:32,256 INFO L124 PetriNetUnfolderBase]: 4/39 cut-off events. [2024-01-31 17:14:32,256 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:14:32,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 39 events. 4/39 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-01-31 17:14:32,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 43 transitions, 114 flow [2024-01-31 17:14:32,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 38 transitions, 100 flow [2024-01-31 17:14:32,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:14:32,275 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;@5cdcbb35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:14:32,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 17:14:32,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:14:32,284 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2024-01-31 17:14:32,285 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:14:32,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:32,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:14:32,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:32,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1312954270, now seen corresponding path program 1 times [2024-01-31 17:14:32,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:32,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887171924] [2024-01-31 17:14:32,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:32,768 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 17:14:32,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:32,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887171924] [2024-01-31 17:14:32,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887171924] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:32,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:32,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:14:32,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496764041] [2024-01-31 17:14:32,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:14:32,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:32,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:14:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:14:32,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-01-31 17:14:32,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:14:32,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:32,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-01-31 17:14:32,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:33,260 INFO L124 PetriNetUnfolderBase]: 3350/4633 cut-off events. [2024-01-31 17:14:33,260 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-01-31 17:14:33,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9464 conditions, 4633 events. 3350/4633 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 20192 event pairs, 860 based on Foata normal form. 147/4770 useless extension candidates. Maximal degree in co-relation 7596. Up to 3527 conditions per place. [2024-01-31 17:14:33,289 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 51 selfloop transitions, 3 changer transitions 3/62 dead transitions. [2024-01-31 17:14:33,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 283 flow [2024-01-31 17:14:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:14:33,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:14:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-01-31 17:14:33,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-01-31 17:14:33,301 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 100 flow. Second operand 3 states and 87 transitions. [2024-01-31 17:14:33,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 283 flow [2024-01-31 17:14:33,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 253 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 17:14:33,313 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 107 flow [2024-01-31 17:14:33,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-01-31 17:14:33,318 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2024-01-31 17:14:33,318 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 107 flow [2024-01-31 17:14:33,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:14:33,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:33,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:14:33,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:14:33,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:33,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:33,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1636013014, now seen corresponding path program 1 times [2024-01-31 17:14:33,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:33,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670672660] [2024-01-31 17:14:33,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:33,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:14:33,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:33,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670672660] [2024-01-31 17:14:33,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670672660] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:33,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:33,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:14:33,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906345679] [2024-01-31 17:14:33,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:33,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:14:33,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:14:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:14:33,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:33,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 17:14:33,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:33,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:33,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:34,479 INFO L124 PetriNetUnfolderBase]: 12483/16712 cut-off events. [2024-01-31 17:14:34,480 INFO L125 PetriNetUnfolderBase]: For 989/989 co-relation queries the response was YES. [2024-01-31 17:14:34,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35425 conditions, 16712 events. 12483/16712 cut-off events. For 989/989 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 84880 event pairs, 4741 based on Foata normal form. 0/13201 useless extension candidates. Maximal degree in co-relation 10119. Up to 9345 conditions per place. [2024-01-31 17:14:34,613 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 84 selfloop transitions, 10 changer transitions 0/99 dead transitions. [2024-01-31 17:14:34,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 99 transitions, 430 flow [2024-01-31 17:14:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:14:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:14:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-01-31 17:14:34,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-01-31 17:14:34,616 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 107 flow. Second operand 5 states and 132 transitions. [2024-01-31 17:14:34,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 99 transitions, 430 flow [2024-01-31 17:14:34,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 99 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:14:34,618 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 171 flow [2024-01-31 17:14:34,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2024-01-31 17:14:34,619 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2024-01-31 17:14:34,619 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 171 flow [2024-01-31 17:14:34,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 17:14:34,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:34,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:14:34,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:14:34,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:34,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:34,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1645224102, now seen corresponding path program 2 times [2024-01-31 17:14:34,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:34,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781861732] [2024-01-31 17:14:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:34,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:14:34,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:34,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781861732] [2024-01-31 17:14:34,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781861732] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:34,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:34,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:14:34,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124686793] [2024-01-31 17:14:34,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:34,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:14:34,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:34,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:14:34,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:14:34,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:34,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 17:14:34,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:34,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:34,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:36,151 INFO L124 PetriNetUnfolderBase]: 18418/24773 cut-off events. [2024-01-31 17:14:36,151 INFO L125 PetriNetUnfolderBase]: For 10776/10854 co-relation queries the response was YES. [2024-01-31 17:14:36,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64826 conditions, 24773 events. 18418/24773 cut-off events. For 10776/10854 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 135227 event pairs, 3248 based on Foata normal form. 714/25067 useless extension candidates. Maximal degree in co-relation 37336. Up to 13675 conditions per place. [2024-01-31 17:14:36,268 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 91 selfloop transitions, 8 changer transitions 3/107 dead transitions. [2024-01-31 17:14:36,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 107 transitions, 566 flow [2024-01-31 17:14:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:14:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:14:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-01-31 17:14:36,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6569767441860465 [2024-01-31 17:14:36,270 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 171 flow. Second operand 4 states and 113 transitions. [2024-01-31 17:14:36,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 107 transitions, 566 flow [2024-01-31 17:14:36,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 107 transitions, 566 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:14:36,279 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 257 flow [2024-01-31 17:14:36,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2024-01-31 17:14:36,280 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2024-01-31 17:14:36,280 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 257 flow [2024-01-31 17:14:36,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 17:14:36,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:36,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:14:36,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:14:36,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:36,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:36,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1930970174, now seen corresponding path program 3 times [2024-01-31 17:14:36,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:36,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084914800] [2024-01-31 17:14:36,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:36,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:14:36,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:36,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084914800] [2024-01-31 17:14:36,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084914800] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:36,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:36,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:14:36,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281353709] [2024-01-31 17:14:36,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:36,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:14:36,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:36,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:14:36,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:14:36,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:36,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 17:14:36,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:36,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:36,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:38,368 INFO L124 PetriNetUnfolderBase]: 24182/32187 cut-off events. [2024-01-31 17:14:38,369 INFO L125 PetriNetUnfolderBase]: For 29408/29478 co-relation queries the response was YES. [2024-01-31 17:14:38,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95014 conditions, 32187 events. 24182/32187 cut-off events. For 29408/29478 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 174884 event pairs, 6854 based on Foata normal form. 198/31764 useless extension candidates. Maximal degree in co-relation 36900. Up to 13097 conditions per place. [2024-01-31 17:14:38,593 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 101 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2024-01-31 17:14:38,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 124 transitions, 755 flow [2024-01-31 17:14:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:14:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:14:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-01-31 17:14:38,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-01-31 17:14:38,597 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 257 flow. Second operand 5 states and 132 transitions. [2024-01-31 17:14:38,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 124 transitions, 755 flow [2024-01-31 17:14:38,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 124 transitions, 755 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:14:38,614 INFO L231 Difference]: Finished difference. Result has 60 places, 67 transitions, 388 flow [2024-01-31 17:14:38,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=60, PETRI_TRANSITIONS=67} [2024-01-31 17:14:38,615 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2024-01-31 17:14:38,616 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 67 transitions, 388 flow [2024-01-31 17:14:38,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 17:14:38,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:38,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:14:38,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:14:38,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:38,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:38,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1551907320, now seen corresponding path program 4 times [2024-01-31 17:14:38,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:38,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136301394] [2024-01-31 17:14:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:38,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:14:38,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136301394] [2024-01-31 17:14:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136301394] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:38,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:38,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:14:38,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763938114] [2024-01-31 17:14:38,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:38,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:14:38,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:14:38,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:14:38,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:38,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 67 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 17:14:38,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:38,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:38,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:40,665 INFO L124 PetriNetUnfolderBase]: 24522/32875 cut-off events. [2024-01-31 17:14:40,665 INFO L125 PetriNetUnfolderBase]: For 59754/59830 co-relation queries the response was YES. [2024-01-31 17:14:40,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108062 conditions, 32875 events. 24522/32875 cut-off events. For 59754/59830 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 181399 event pairs, 7282 based on Foata normal form. 412/32668 useless extension candidates. Maximal degree in co-relation 40658. Up to 16730 conditions per place. [2024-01-31 17:14:40,877 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 97 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2024-01-31 17:14:40,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 783 flow [2024-01-31 17:14:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:14:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:14:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-01-31 17:14:40,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6569767441860465 [2024-01-31 17:14:40,879 INFO L175 Difference]: Start difference. First operand has 60 places, 67 transitions, 388 flow. Second operand 4 states and 113 transitions. [2024-01-31 17:14:40,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 783 flow [2024-01-31 17:14:40,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 115 transitions, 769 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-01-31 17:14:40,937 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 415 flow [2024-01-31 17:14:40,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2024-01-31 17:14:40,939 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2024-01-31 17:14:40,939 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 415 flow [2024-01-31 17:14:40,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 17:14:40,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:40,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:14:40,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:14:40,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:40,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:40,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2047129078, now seen corresponding path program 1 times [2024-01-31 17:14:40,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:40,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695434843] [2024-01-31 17:14:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:40,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:14:41,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:41,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695434843] [2024-01-31 17:14:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695434843] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:41,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:41,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:14:41,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856224379] [2024-01-31 17:14:41,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:41,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:14:41,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:14:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:14:41,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:41,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 415 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 17:14:41,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:41,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:41,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:43,394 INFO L124 PetriNetUnfolderBase]: 27273/36835 cut-off events. [2024-01-31 17:14:43,395 INFO L125 PetriNetUnfolderBase]: For 92797/92819 co-relation queries the response was YES. [2024-01-31 17:14:43,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123291 conditions, 36835 events. 27273/36835 cut-off events. For 92797/92819 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 209205 event pairs, 8279 based on Foata normal form. 1000/36943 useless extension candidates. Maximal degree in co-relation 45143. Up to 17649 conditions per place. [2024-01-31 17:14:43,606 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 98 selfloop transitions, 12 changer transitions 19/134 dead transitions. [2024-01-31 17:14:43,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 134 transitions, 968 flow [2024-01-31 17:14:43,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:14:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:14:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-01-31 17:14:43,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641860465116279 [2024-01-31 17:14:43,608 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 415 flow. Second operand 5 states and 138 transitions. [2024-01-31 17:14:43,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 134 transitions, 968 flow [2024-01-31 17:14:43,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 134 transitions, 881 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-01-31 17:14:43,650 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 419 flow [2024-01-31 17:14:43,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2024-01-31 17:14:43,650 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2024-01-31 17:14:43,651 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 419 flow [2024-01-31 17:14:43,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 17:14:43,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:43,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:14:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:14:43,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:43,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash -984612048, now seen corresponding path program 5 times [2024-01-31 17:14:43,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:43,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064588046] [2024-01-31 17:14:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:43,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:14:43,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:43,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064588046] [2024-01-31 17:14:43,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064588046] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:43,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:43,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:14:43,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144578380] [2024-01-31 17:14:43,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:43,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:14:43,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:43,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:14:43,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:14:43,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:43,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 17:14:43,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:43,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:43,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:45,727 INFO L124 PetriNetUnfolderBase]: 25686/34776 cut-off events. [2024-01-31 17:14:45,727 INFO L125 PetriNetUnfolderBase]: For 79460/79532 co-relation queries the response was YES. [2024-01-31 17:14:45,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120246 conditions, 34776 events. 25686/34776 cut-off events. For 79460/79532 co-relation queries the response was YES. Maximal size of possible extension queue 1273. Compared 196671 event pairs, 8381 based on Foata normal form. 694/34708 useless extension candidates. Maximal degree in co-relation 48895. Up to 17191 conditions per place. [2024-01-31 17:14:45,907 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 85 selfloop transitions, 18 changer transitions 5/113 dead transitions. [2024-01-31 17:14:45,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 850 flow [2024-01-31 17:14:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:14:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:14:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-01-31 17:14:45,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6337209302325582 [2024-01-31 17:14:45,908 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 419 flow. Second operand 4 states and 109 transitions. [2024-01-31 17:14:45,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 850 flow [2024-01-31 17:14:46,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 113 transitions, 811 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-01-31 17:14:46,004 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 459 flow [2024-01-31 17:14:46,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=459, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-01-31 17:14:46,004 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2024-01-31 17:14:46,005 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 459 flow [2024-01-31 17:14:46,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 17:14:46,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:46,005 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] [2024-01-31 17:14:46,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:14:46,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:46,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:46,006 INFO L85 PathProgramCache]: Analyzing trace with hash -275063773, now seen corresponding path program 1 times [2024-01-31 17:14:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302515807] [2024-01-31 17:14:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:46,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:14:46,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302515807] [2024-01-31 17:14:46,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302515807] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:14:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186364917] [2024-01-31 17:14:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:46,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:14:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:14:46,088 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 17:14:46,088 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 17:14:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:46,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:14:46,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:14:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:14:46,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:14:46,348 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 17:14:46,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186364917] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:14:46,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:14:46,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-01-31 17:14:46,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800039008] [2024-01-31 17:14:46,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:46,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:14:46,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:14:46,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:14:46,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:46,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 459 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 17:14:46,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:46,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:46,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:48,722 INFO L124 PetriNetUnfolderBase]: 27458/37461 cut-off events. [2024-01-31 17:14:48,722 INFO L125 PetriNetUnfolderBase]: For 91978/92004 co-relation queries the response was YES. [2024-01-31 17:14:48,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136066 conditions, 37461 events. 27458/37461 cut-off events. For 91978/92004 co-relation queries the response was YES. Maximal size of possible extension queue 1400. Compared 218809 event pairs, 3995 based on Foata normal form. 1016/37975 useless extension candidates. Maximal degree in co-relation 55938. Up to 18467 conditions per place. [2024-01-31 17:14:48,932 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 104 selfloop transitions, 11 changer transitions 5/125 dead transitions. [2024-01-31 17:14:48,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 125 transitions, 1058 flow [2024-01-31 17:14:48,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:14:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:14:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-01-31 17:14:48,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6162790697674418 [2024-01-31 17:14:48,934 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 459 flow. Second operand 4 states and 106 transitions. [2024-01-31 17:14:48,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 125 transitions, 1058 flow [2024-01-31 17:14:48,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 125 transitions, 1026 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-31 17:14:48,975 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 505 flow [2024-01-31 17:14:48,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-01-31 17:14:48,976 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2024-01-31 17:14:48,976 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 505 flow [2024-01-31 17:14:48,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 17:14:48,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:48,976 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] [2024-01-31 17:14:48,989 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 17:14:49,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:14:49,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:49,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1103270487, now seen corresponding path program 2 times [2024-01-31 17:14:49,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:49,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891094645] [2024-01-31 17:14:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:49,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:14:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891094645] [2024-01-31 17:14:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891094645] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:49,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:14:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338109823] [2024-01-31 17:14:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:49,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:14:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:14:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:14:49,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:49,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 505 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 17:14:49,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:49,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:49,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:52,061 INFO L124 PetriNetUnfolderBase]: 33890/45486 cut-off events. [2024-01-31 17:14:52,061 INFO L125 PetriNetUnfolderBase]: For 150538/150554 co-relation queries the response was YES. [2024-01-31 17:14:52,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178944 conditions, 45486 events. 33890/45486 cut-off events. For 150538/150554 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 261899 event pairs, 9555 based on Foata normal form. 200/44749 useless extension candidates. Maximal degree in co-relation 72222. Up to 26218 conditions per place. [2024-01-31 17:14:52,320 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 135 selfloop transitions, 21 changer transitions 4/165 dead transitions. [2024-01-31 17:14:52,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 165 transitions, 1580 flow [2024-01-31 17:14:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:14:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:14:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-01-31 17:14:52,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 17:14:52,322 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 505 flow. Second operand 5 states and 129 transitions. [2024-01-31 17:14:52,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 165 transitions, 1580 flow [2024-01-31 17:14:52,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 165 transitions, 1544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:14:52,372 INFO L231 Difference]: Finished difference. Result has 72 places, 83 transitions, 679 flow [2024-01-31 17:14:52,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=679, PETRI_PLACES=72, PETRI_TRANSITIONS=83} [2024-01-31 17:14:52,374 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 25 predicate places. [2024-01-31 17:14:52,374 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 83 transitions, 679 flow [2024-01-31 17:14:52,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 17:14:52,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:52,377 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] [2024-01-31 17:14:52,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:14:52,377 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:52,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:52,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1592853819, now seen corresponding path program 1 times [2024-01-31 17:14:52,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:52,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701079421] [2024-01-31 17:14:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:52,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:52,478 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 17:14:52,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:52,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701079421] [2024-01-31 17:14:52,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701079421] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:52,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:52,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:14:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753405542] [2024-01-31 17:14:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:52,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:14:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:14:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:14:52,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:52,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 83 transitions, 679 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 17:14:52,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:52,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:52,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:14:56,224 INFO L124 PetriNetUnfolderBase]: 41892/56157 cut-off events. [2024-01-31 17:14:56,224 INFO L125 PetriNetUnfolderBase]: For 235906/235998 co-relation queries the response was YES. [2024-01-31 17:14:56,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246580 conditions, 56157 events. 41892/56157 cut-off events. For 235906/235998 co-relation queries the response was YES. Maximal size of possible extension queue 2316. Compared 333018 event pairs, 10046 based on Foata normal form. 930/55711 useless extension candidates. Maximal degree in co-relation 104050. Up to 23029 conditions per place. [2024-01-31 17:14:56,582 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 139 selfloop transitions, 27 changer transitions 2/173 dead transitions. [2024-01-31 17:14:56,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 173 transitions, 1667 flow [2024-01-31 17:14:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:14:56,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:14:56,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-01-31 17:14:56,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-01-31 17:14:56,584 INFO L175 Difference]: Start difference. First operand has 72 places, 83 transitions, 679 flow. Second operand 5 states and 132 transitions. [2024-01-31 17:14:56,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 173 transitions, 1667 flow [2024-01-31 17:14:56,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 173 transitions, 1631 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:14:56,673 INFO L231 Difference]: Finished difference. Result has 77 places, 91 transitions, 815 flow [2024-01-31 17:14:56,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=815, PETRI_PLACES=77, PETRI_TRANSITIONS=91} [2024-01-31 17:14:56,674 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2024-01-31 17:14:56,674 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 91 transitions, 815 flow [2024-01-31 17:14:56,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 17:14:56,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:14:56,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:14:56,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:14:56,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:14:56,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:14:56,675 INFO L85 PathProgramCache]: Analyzing trace with hash 421252365, now seen corresponding path program 2 times [2024-01-31 17:14:56,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:14:56,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124943510] [2024-01-31 17:14:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:14:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:14:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:14:56,745 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 17:14:56,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:14:56,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124943510] [2024-01-31 17:14:56,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124943510] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:14:56,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:14:56,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:14:56,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227518945] [2024-01-31 17:14:56,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:14:56,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:14:56,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:56,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:14:56,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:14:56,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:14:56,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 91 transitions, 815 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 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 17:14:56,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:56,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:14:56,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:01,979 INFO L124 PetriNetUnfolderBase]: 50622/68061 cut-off events. [2024-01-31 17:15:01,979 INFO L125 PetriNetUnfolderBase]: For 329975/330057 co-relation queries the response was YES. [2024-01-31 17:15:02,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310727 conditions, 68061 events. 50622/68061 cut-off events. For 329975/330057 co-relation queries the response was YES. Maximal size of possible extension queue 2876. Compared 417531 event pairs, 10176 based on Foata normal form. 1310/67999 useless extension candidates. Maximal degree in co-relation 180807. Up to 32675 conditions per place. [2024-01-31 17:15:02,446 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 155 selfloop transitions, 36 changer transitions 12/208 dead transitions. [2024-01-31 17:15:02,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 208 transitions, 2037 flow [2024-01-31 17:15:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:15:02,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:15:02,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-01-31 17:15:02,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6146179401993356 [2024-01-31 17:15:02,451 INFO L175 Difference]: Start difference. First operand has 77 places, 91 transitions, 815 flow. Second operand 7 states and 185 transitions. [2024-01-31 17:15:02,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 208 transitions, 2037 flow [2024-01-31 17:15:02,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 208 transitions, 1967 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 17:15:02,569 INFO L231 Difference]: Finished difference. Result has 84 places, 104 transitions, 1058 flow [2024-01-31 17:15:02,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1058, PETRI_PLACES=84, PETRI_TRANSITIONS=104} [2024-01-31 17:15:02,569 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 37 predicate places. [2024-01-31 17:15:02,569 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 104 transitions, 1058 flow [2024-01-31 17:15:02,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 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 17:15:02,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:02,570 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] [2024-01-31 17:15:02,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:15:02,571 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:15:02,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1791106717, now seen corresponding path program 3 times [2024-01-31 17:15:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:02,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386317417] [2024-01-31 17:15:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:02,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:15:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386317417] [2024-01-31 17:15:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386317417] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:02,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:02,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:15:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437183789] [2024-01-31 17:15:02,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:02,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:15:02,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:02,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:15:02,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:15:02,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-31 17:15:02,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 104 transitions, 1058 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 17:15:02,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:02,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-31 17:15:02,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:08,983 INFO L124 PetriNetUnfolderBase]: 64521/87313 cut-off events. [2024-01-31 17:15:08,984 INFO L125 PetriNetUnfolderBase]: For 486024/486126 co-relation queries the response was YES. [2024-01-31 17:15:09,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406337 conditions, 87313 events. 64521/87313 cut-off events. For 486024/486126 co-relation queries the response was YES. Maximal size of possible extension queue 3390. Compared 555017 event pairs, 21002 based on Foata normal form. 356/85478 useless extension candidates. Maximal degree in co-relation 240383. Up to 49906 conditions per place. [2024-01-31 17:15:10,017 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 211 selfloop transitions, 29 changer transitions 4/249 dead transitions. [2024-01-31 17:15:10,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 249 transitions, 3188 flow [2024-01-31 17:15:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:15:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:15:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-01-31 17:15:10,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 17:15:10,021 INFO L175 Difference]: Start difference. First operand has 84 places, 104 transitions, 1058 flow. Second operand 5 states and 129 transitions. [2024-01-31 17:15:10,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 249 transitions, 3188 flow