./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/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/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:32:31,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:32:31,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:32:31,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:32:31,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:32:31,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:32:31,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:32:31,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:32:31,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:32:31,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:32:31,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:32:31,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:32:31,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:32:31,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:32:31,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:32:31,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:32:31,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:32:31,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:32:31,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:32:31,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:32:31,830 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:32:31,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:32:31,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:32:31,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:32:31,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:32:31,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:32:31,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:32:31,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:32:31,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:32:31,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:32:31,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:32:31,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:32:31,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:32:31,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:32:31,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:32:31,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:32:31,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:32:31,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:32:31,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:32:31,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:32:31,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:32:31,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:32:31,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:32:31,887 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:32:31,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:32:31,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:32:31,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:32:31,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:32:31,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:32:31,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:32:31,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:32:31,891 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:32:31,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:32:31,892 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:32:31,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:32:31,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:32:31,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:32:31,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:32:31,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:32:31,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:32:31,894 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:32:31,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:32:31,895 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:32:31,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:32:31,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:32:31,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:32:31,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:32:31,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:32:31,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:32:31,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:32:31,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:32:31,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:32:31,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:32:31,897 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:32:31,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:32:31,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:32:31,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 [2022-07-19 21:32:32,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:32:32,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:32:32,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:32:32,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:32:32,204 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:32:32,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-07-19 21:32:32,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f62f787b/ad4ef7d5e6c449ac818694f069199d5c/FLAGc5cb57fcc [2022-07-19 21:32:32,719 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:32:32,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-07-19 21:32:32,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f62f787b/ad4ef7d5e6c449ac818694f069199d5c/FLAGc5cb57fcc [2022-07-19 21:32:33,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f62f787b/ad4ef7d5e6c449ac818694f069199d5c [2022-07-19 21:32:33,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:32:33,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:32:33,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:32:33,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:32:33,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:32:33,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0372dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33, skipping insertion in model container [2022-07-19 21:32:33,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:32:33,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:32:33,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-07-19 21:32:33,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:32:33,330 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:32:33,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-07-19 21:32:33,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:32:33,361 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:32:33,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33 WrapperNode [2022-07-19 21:32:33,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:32:33,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:32:33,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:32:33,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:32:33,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,394 INFO L137 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 116 [2022-07-19 21:32:33,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:32:33,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:32:33,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:32:33,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:32:33,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:32:33,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:32:33,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:32:33,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:32:33,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (1/1) ... [2022-07-19 21:32:33,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:32:33,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:32:33,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:32:33,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:32:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:32:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:32:33,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:32:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:32:33,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:32:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:32:33,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:32:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-19 21:32:33,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-19 21:32:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:32:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:32:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:32:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:32:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:32:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:32:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:32:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:32:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:32:33,514 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:32:33,582 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:32:33,583 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:32:33,777 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:32:33,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:32:33,837 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:32:33,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:32:33 BoogieIcfgContainer [2022-07-19 21:32:33,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:32:33,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:32:33,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:32:33,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:32:33,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:32:33" (1/3) ... [2022-07-19 21:32:33,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92ed6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:32:33, skipping insertion in model container [2022-07-19 21:32:33,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:33" (2/3) ... [2022-07-19 21:32:33,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92ed6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:32:33, skipping insertion in model container [2022-07-19 21:32:33,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:32:33" (3/3) ... [2022-07-19 21:32:33,847 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2022-07-19 21:32:33,852 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:32:33,858 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:32:33,859 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:32:33,859 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:32:33,919 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-19 21:32:33,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 128 places, 124 transitions, 280 flow [2022-07-19 21:32:34,047 INFO L129 PetriNetUnfolder]: 9/120 cut-off events. [2022-07-19 21:32:34,047 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:32:34,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 120 events. 9/120 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 96 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-07-19 21:32:34,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 124 transitions, 280 flow [2022-07-19 21:32:34,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 107 transitions, 238 flow [2022-07-19 21:32:34,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:32:34,085 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@604cfecd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@488da8cd [2022-07-19 21:32:34,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:32:34,110 INFO L129 PetriNetUnfolder]: 9/106 cut-off events. [2022-07-19 21:32:34,115 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:32:34,115 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:32:34,116 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:32:34,117 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)] === [2022-07-19 21:32:34,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:32:34,125 INFO L85 PathProgramCache]: Analyzing trace with hash -60786852, now seen corresponding path program 1 times [2022-07-19 21:32:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:32:34,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599448738] [2022-07-19 21:32:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:32:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:32:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:32:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:34,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:32:34,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599448738] [2022-07-19 21:32:34,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599448738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:32:34,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:32:34,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:32:34,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550133373] [2022-07-19 21:32:34,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:32:34,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:32:34,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:32:34,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:32:34,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:32:34,467 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 124 [2022-07-19 21:32:34,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 238 flow. Second operand has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:34,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:32:34,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 124 [2022-07-19 21:32:34,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:32:34,665 INFO L129 PetriNetUnfolder]: 121/483 cut-off events. [2022-07-19 21:32:34,666 INFO L130 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-07-19 21:32:34,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 483 events. 121/483 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2230 event pairs, 51 based on Foata normal form. 118/532 useless extension candidates. Maximal degree in co-relation 568. Up to 163 conditions per place. [2022-07-19 21:32:34,676 INFO L132 encePairwiseOnDemand]: 119/124 looper letters, 12 selfloop transitions, 0 changer transitions 1/102 dead transitions. [2022-07-19 21:32:34,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 252 flow [2022-07-19 21:32:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:32:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:32:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2022-07-19 21:32:34,692 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9233870967741935 [2022-07-19 21:32:34,693 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 229 transitions. [2022-07-19 21:32:34,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 229 transitions. [2022-07-19 21:32:34,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:32:34,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 229 transitions. [2022-07-19 21:32:34,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:34,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:34,706 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:34,707 INFO L186 Difference]: Start difference. First operand has 111 places, 107 transitions, 238 flow. Second operand 2 states and 229 transitions. [2022-07-19 21:32:34,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 252 flow [2022-07-19 21:32:34,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 236 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-19 21:32:34,715 INFO L242 Difference]: Finished difference. Result has 104 places, 101 transitions, 210 flow [2022-07-19 21:32:34,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=210, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2022-07-19 21:32:34,727 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, -7 predicate places. [2022-07-19 21:32:34,727 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 210 flow [2022-07-19 21:32:34,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:34,728 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:32:34,728 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:32:34,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:32:34,729 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)] === [2022-07-19 21:32:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:32:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1089609413, now seen corresponding path program 1 times [2022-07-19 21:32:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:32:34,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864425072] [2022-07-19 21:32:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:32:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:32:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:32:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:35,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:32:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864425072] [2022-07-19 21:32:35,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864425072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:32:35,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:32:35,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:32:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403502875] [2022-07-19 21:32:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:32:35,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:32:35,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:32:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:32:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:32:35,075 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 124 [2022-07-19 21:32:35,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:35,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:32:35,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 124 [2022-07-19 21:32:35,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:32:35,250 INFO L129 PetriNetUnfolder]: 107/477 cut-off events. [2022-07-19 21:32:35,250 INFO L130 PetriNetUnfolder]: For 34/35 co-relation queries the response was YES. [2022-07-19 21:32:35,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 477 events. 107/477 cut-off events. For 34/35 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2117 event pairs, 26 based on Foata normal form. 15/434 useless extension candidates. Maximal degree in co-relation 656. Up to 124 conditions per place. [2022-07-19 21:32:35,256 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 32 selfloop transitions, 5 changer transitions 5/125 dead transitions. [2022-07-19 21:32:35,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 125 transitions, 354 flow [2022-07-19 21:32:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:32:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:32:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 640 transitions. [2022-07-19 21:32:35,263 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8602150537634409 [2022-07-19 21:32:35,263 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 640 transitions. [2022-07-19 21:32:35,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 640 transitions. [2022-07-19 21:32:35,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:32:35,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 640 transitions. [2022-07-19 21:32:35,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.66666666666667) internal successors, (640), 6 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:35,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:35,271 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:35,271 INFO L186 Difference]: Start difference. First operand has 104 places, 101 transitions, 210 flow. Second operand 6 states and 640 transitions. [2022-07-19 21:32:35,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 125 transitions, 354 flow [2022-07-19 21:32:35,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 125 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:32:35,276 INFO L242 Difference]: Finished difference. Result has 112 places, 104 transitions, 249 flow [2022-07-19 21:32:35,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2022-07-19 21:32:35,278 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 1 predicate places. [2022-07-19 21:32:35,278 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 249 flow [2022-07-19 21:32:35,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:35,279 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:32:35,279 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:32:35,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:32:35,280 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)] === [2022-07-19 21:32:35,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:32:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash -204747371, now seen corresponding path program 1 times [2022-07-19 21:32:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:32:35,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776285526] [2022-07-19 21:32:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:32:35,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:32:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:32:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:35,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:32:35,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776285526] [2022-07-19 21:32:35,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776285526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:32:35,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:32:35,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:32:35,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688965600] [2022-07-19 21:32:35,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:32:35,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:32:35,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:32:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:32:35,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:32:35,424 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-19 21:32:35,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:35,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:32:35,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-19 21:32:35,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:32:36,713 INFO L129 PetriNetUnfolder]: 6700/10882 cut-off events. [2022-07-19 21:32:36,714 INFO L130 PetriNetUnfolder]: For 1841/1841 co-relation queries the response was YES. [2022-07-19 21:32:36,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22189 conditions, 10882 events. 6700/10882 cut-off events. For 1841/1841 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 78149 event pairs, 2593 based on Foata normal form. 0/8184 useless extension candidates. Maximal degree in co-relation 22181. Up to 4996 conditions per place. [2022-07-19 21:32:36,829 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 65 selfloop transitions, 5 changer transitions 11/154 dead transitions. [2022-07-19 21:32:36,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 154 transitions, 551 flow [2022-07-19 21:32:36,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:32:36,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:32:36,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2022-07-19 21:32:36,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8279569892473119 [2022-07-19 21:32:36,832 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2022-07-19 21:32:36,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2022-07-19 21:32:36,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:32:36,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2022-07-19 21:32:36,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:36,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:36,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:36,837 INFO L186 Difference]: Start difference. First operand has 112 places, 104 transitions, 249 flow. Second operand 6 states and 616 transitions. [2022-07-19 21:32:36,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 154 transitions, 551 flow [2022-07-19 21:32:36,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 547 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:32:36,847 INFO L242 Difference]: Finished difference. Result has 116 places, 106 transitions, 271 flow [2022-07-19 21:32:36,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2022-07-19 21:32:36,850 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 5 predicate places. [2022-07-19 21:32:36,850 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 271 flow [2022-07-19 21:32:36,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:36,851 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:32:36,851 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:32:36,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:32:36,851 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)] === [2022-07-19 21:32:36,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:32:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1323837765, now seen corresponding path program 2 times [2022-07-19 21:32:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:32:36,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409725404] [2022-07-19 21:32:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:32:36,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:32:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:32:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:32:36,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409725404] [2022-07-19 21:32:36,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409725404] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:32:36,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962901385] [2022-07-19 21:32:36,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:32:36,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:32:36,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:32:36,985 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) [2022-07-19 21:32:37,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:32:37,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:32:37,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:32:37,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 21:32:37,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:32:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:37,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:32:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:37,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962901385] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:32:37,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:32:37,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-07-19 21:32:37,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509189364] [2022-07-19 21:32:37,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:32:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:32:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:32:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:32:37,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:32:37,255 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-19 21:32:37,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 271 flow. Second operand has 9 states, 9 states have (on average 93.11111111111111) internal successors, (838), 9 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:37,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:32:37,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-19 21:32:37,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:32:39,192 INFO L129 PetriNetUnfolder]: 11071/18071 cut-off events. [2022-07-19 21:32:39,192 INFO L130 PetriNetUnfolder]: For 5813/6596 co-relation queries the response was YES. [2022-07-19 21:32:39,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40047 conditions, 18071 events. 11071/18071 cut-off events. For 5813/6596 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 143744 event pairs, 1277 based on Foata normal form. 780/16577 useless extension candidates. Maximal degree in co-relation 40037. Up to 2464 conditions per place. [2022-07-19 21:32:39,373 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 185 selfloop transitions, 24 changer transitions 3/286 dead transitions. [2022-07-19 21:32:39,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 286 transitions, 1280 flow [2022-07-19 21:32:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:32:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:32:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1452 transitions. [2022-07-19 21:32:39,379 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.836405529953917 [2022-07-19 21:32:39,379 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1452 transitions. [2022-07-19 21:32:39,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1452 transitions. [2022-07-19 21:32:39,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:32:39,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1452 transitions. [2022-07-19 21:32:39,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 103.71428571428571) internal successors, (1452), 14 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:39,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:39,389 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:39,389 INFO L186 Difference]: Start difference. First operand has 116 places, 106 transitions, 271 flow. Second operand 14 states and 1452 transitions. [2022-07-19 21:32:39,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 286 transitions, 1280 flow [2022-07-19 21:32:39,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 286 transitions, 1264 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-07-19 21:32:39,410 INFO L242 Difference]: Finished difference. Result has 132 places, 132 transitions, 421 flow [2022-07-19 21:32:39,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=421, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2022-07-19 21:32:39,412 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 21 predicate places. [2022-07-19 21:32:39,412 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 421 flow [2022-07-19 21:32:39,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 93.11111111111111) internal successors, (838), 9 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:39,413 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:32:39,413 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:32:39,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:32:39,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:32:39,632 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)] === [2022-07-19 21:32:39,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:32:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash -476073083, now seen corresponding path program 1 times [2022-07-19 21:32:39,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:32:39,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513639134] [2022-07-19 21:32:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:32:39,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:32:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:32:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:39,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:32:39,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513639134] [2022-07-19 21:32:39,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513639134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:32:39,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:32:39,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:32:39,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942321500] [2022-07-19 21:32:39,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:32:39,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:32:39,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:32:39,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:32:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:32:39,709 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-19 21:32:39,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:39,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:32:39,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-19 21:32:39,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:32:42,492 INFO L129 PetriNetUnfolder]: 20247/32769 cut-off events. [2022-07-19 21:32:42,493 INFO L130 PetriNetUnfolder]: For 36066/39241 co-relation queries the response was YES. [2022-07-19 21:32:42,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87365 conditions, 32769 events. 20247/32769 cut-off events. For 36066/39241 co-relation queries the response was YES. Maximal size of possible extension queue 1856. Compared 282186 event pairs, 9264 based on Foata normal form. 1816/32677 useless extension candidates. Maximal degree in co-relation 87349. Up to 15847 conditions per place. [2022-07-19 21:32:42,839 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 132 selfloop transitions, 6 changer transitions 5/229 dead transitions. [2022-07-19 21:32:42,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 229 transitions, 1137 flow [2022-07-19 21:32:42,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:32:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:32:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2022-07-19 21:32:42,842 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8279569892473119 [2022-07-19 21:32:42,842 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2022-07-19 21:32:42,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2022-07-19 21:32:42,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:32:42,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2022-07-19 21:32:42,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:42,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:42,847 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:42,848 INFO L186 Difference]: Start difference. First operand has 132 places, 132 transitions, 421 flow. Second operand 6 states and 616 transitions. [2022-07-19 21:32:42,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 229 transitions, 1137 flow [2022-07-19 21:32:42,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 229 transitions, 1137 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:32:42,882 INFO L242 Difference]: Finished difference. Result has 140 places, 134 transitions, 451 flow [2022-07-19 21:32:42,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=140, PETRI_TRANSITIONS=134} [2022-07-19 21:32:42,885 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 29 predicate places. [2022-07-19 21:32:42,885 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 134 transitions, 451 flow [2022-07-19 21:32:42,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:42,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:32:42,886 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:32:42,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:32:42,887 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)] === [2022-07-19 21:32:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:32:42,888 INFO L85 PathProgramCache]: Analyzing trace with hash -262993417, now seen corresponding path program 2 times [2022-07-19 21:32:42,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:32:42,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263419237] [2022-07-19 21:32:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:32:42,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:32:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:32:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:42,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:32:42,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263419237] [2022-07-19 21:32:42,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263419237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:32:42,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:32:42,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:32:42,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403869724] [2022-07-19 21:32:42,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:32:42,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:32:42,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:32:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:32:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:32:42,963 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-19 21:32:42,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 134 transitions, 451 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:42,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:32:42,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-19 21:32:42,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:32:46,158 INFO L129 PetriNetUnfolder]: 20357/37477 cut-off events. [2022-07-19 21:32:46,159 INFO L130 PetriNetUnfolder]: For 44264/47262 co-relation queries the response was YES. [2022-07-19 21:32:46,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100098 conditions, 37477 events. 20357/37477 cut-off events. For 44264/47262 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 362066 event pairs, 14078 based on Foata normal form. 2706/39479 useless extension candidates. Maximal degree in co-relation 100078. Up to 18541 conditions per place. [2022-07-19 21:32:46,572 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 81 selfloop transitions, 8 changer transitions 15/187 dead transitions. [2022-07-19 21:32:46,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 187 transitions, 890 flow [2022-07-19 21:32:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:32:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:32:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 617 transitions. [2022-07-19 21:32:46,576 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8293010752688172 [2022-07-19 21:32:46,576 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 617 transitions. [2022-07-19 21:32:46,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 617 transitions. [2022-07-19 21:32:46,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:32:46,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 617 transitions. [2022-07-19 21:32:46,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.83333333333333) internal successors, (617), 6 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:46,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:46,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:46,580 INFO L186 Difference]: Start difference. First operand has 140 places, 134 transitions, 451 flow. Second operand 6 states and 617 transitions. [2022-07-19 21:32:46,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 187 transitions, 890 flow [2022-07-19 21:32:46,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 187 transitions, 884 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:32:46,681 INFO L242 Difference]: Finished difference. Result has 145 places, 134 transitions, 468 flow [2022-07-19 21:32:46,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=468, PETRI_PLACES=145, PETRI_TRANSITIONS=134} [2022-07-19 21:32:46,682 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 34 predicate places. [2022-07-19 21:32:46,683 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 134 transitions, 468 flow [2022-07-19 21:32:46,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:46,683 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:32:46,683 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:32:46,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:32:46,684 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)] === [2022-07-19 21:32:46,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:32:46,685 INFO L85 PathProgramCache]: Analyzing trace with hash 867506165, now seen corresponding path program 3 times [2022-07-19 21:32:46,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:32:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128643557] [2022-07-19 21:32:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:32:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:32:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:32:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:32:46,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128643557] [2022-07-19 21:32:46,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128643557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:32:46,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:32:46,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:32:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903766138] [2022-07-19 21:32:46,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:32:46,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:32:46,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:32:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:32:46,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:32:46,746 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-19 21:32:46,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:46,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:32:46,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-19 21:32:46,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:32:50,368 INFO L129 PetriNetUnfolder]: 25616/44154 cut-off events. [2022-07-19 21:32:50,369 INFO L130 PetriNetUnfolder]: For 51022/52568 co-relation queries the response was YES. [2022-07-19 21:32:50,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122380 conditions, 44154 events. 25616/44154 cut-off events. For 51022/52568 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 417356 event pairs, 10085 based on Foata normal form. 1611/45048 useless extension candidates. Maximal degree in co-relation 122358. Up to 17231 conditions per place. [2022-07-19 21:32:50,980 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 116 selfloop transitions, 16 changer transitions 1/211 dead transitions. [2022-07-19 21:32:50,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 211 transitions, 1092 flow [2022-07-19 21:32:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:32:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:32:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 619 transitions. [2022-07-19 21:32:50,982 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.831989247311828 [2022-07-19 21:32:50,982 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 619 transitions. [2022-07-19 21:32:50,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 619 transitions. [2022-07-19 21:32:50,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:32:50,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 619 transitions. [2022-07-19 21:32:50,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:50,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:50,986 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:50,986 INFO L186 Difference]: Start difference. First operand has 145 places, 134 transitions, 468 flow. Second operand 6 states and 619 transitions. [2022-07-19 21:32:50,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 211 transitions, 1092 flow [2022-07-19 21:32:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 211 transitions, 1077 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-19 21:32:51,353 INFO L242 Difference]: Finished difference. Result has 149 places, 140 transitions, 560 flow [2022-07-19 21:32:51,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=560, PETRI_PLACES=149, PETRI_TRANSITIONS=140} [2022-07-19 21:32:51,354 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 38 predicate places. [2022-07-19 21:32:51,354 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 140 transitions, 560 flow [2022-07-19 21:32:51,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:51,354 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:32:51,354 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:32:51,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:32:51,354 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)] === [2022-07-19 21:32:51,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:32:51,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1370995851, now seen corresponding path program 4 times [2022-07-19 21:32:51,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:32:51,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406208187] [2022-07-19 21:32:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:32:51,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:32:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:32:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:51,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:32:51,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406208187] [2022-07-19 21:32:51,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406208187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:32:51,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:32:51,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:32:51,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144722061] [2022-07-19 21:32:51,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:32:51,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:32:51,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:32:51,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:32:51,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:32:51,406 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-19 21:32:51,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 140 transitions, 560 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:51,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:32:51,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-19 21:32:51,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:32:56,577 INFO L129 PetriNetUnfolder]: 32078/59641 cut-off events. [2022-07-19 21:32:56,578 INFO L130 PetriNetUnfolder]: For 107458/112647 co-relation queries the response was YES. [2022-07-19 21:32:56,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167008 conditions, 59641 events. 32078/59641 cut-off events. For 107458/112647 co-relation queries the response was YES. Maximal size of possible extension queue 2730. Compared 615743 event pairs, 19774 based on Foata normal form. 4757/63289 useless extension candidates. Maximal degree in co-relation 166984. Up to 25939 conditions per place. [2022-07-19 21:32:57,268 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 132 selfloop transitions, 19 changer transitions 4/241 dead transitions. [2022-07-19 21:32:57,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 241 transitions, 1397 flow [2022-07-19 21:32:57,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:32:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:32:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2022-07-19 21:32:57,271 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8682795698924731 [2022-07-19 21:32:57,271 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 646 transitions. [2022-07-19 21:32:57,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 646 transitions. [2022-07-19 21:32:57,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:32:57,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 646 transitions. [2022-07-19 21:32:57,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:57,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:57,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:57,275 INFO L186 Difference]: Start difference. First operand has 149 places, 140 transitions, 560 flow. Second operand 6 states and 646 transitions. [2022-07-19 21:32:57,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 241 transitions, 1397 flow [2022-07-19 21:32:57,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 241 transitions, 1362 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-07-19 21:32:57,514 INFO L242 Difference]: Finished difference. Result has 155 places, 154 transitions, 735 flow [2022-07-19 21:32:57,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=735, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2022-07-19 21:32:57,515 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 44 predicate places. [2022-07-19 21:32:57,515 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 735 flow [2022-07-19 21:32:57,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:57,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:32:57,516 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:32:57,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:32:57,517 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)] === [2022-07-19 21:32:57,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:32:57,517 INFO L85 PathProgramCache]: Analyzing trace with hash -233866269, now seen corresponding path program 5 times [2022-07-19 21:32:57,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:32:57,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848791963] [2022-07-19 21:32:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:32:57,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:32:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:32:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:57,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:32:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848791963] [2022-07-19 21:32:57,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848791963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:32:57,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877095597] [2022-07-19 21:32:57,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 21:32:57,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:32:57,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:32:57,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:32:57,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:32:57,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:32:57,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:32:57,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 21:32:57,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:32:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:57,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:32:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:32:57,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877095597] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:32:57,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:32:57,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-07-19 21:32:57,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818113629] [2022-07-19 21:32:57,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:32:57,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:32:57,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:32:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:32:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:32:57,824 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-19 21:32:57,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 735 flow. Second operand has 11 states, 11 states have (on average 93.54545454545455) internal successors, (1029), 11 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:32:57,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:32:57,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-19 21:32:57,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:33:03,099 INFO L129 PetriNetUnfolder]: 31293/54958 cut-off events. [2022-07-19 21:33:03,099 INFO L130 PetriNetUnfolder]: For 120595/125996 co-relation queries the response was YES. [2022-07-19 21:33:03,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169286 conditions, 54958 events. 31293/54958 cut-off events. For 120595/125996 co-relation queries the response was YES. Maximal size of possible extension queue 2625. Compared 539447 event pairs, 9785 based on Foata normal form. 5703/59722 useless extension candidates. Maximal degree in co-relation 169259. Up to 14499 conditions per place. [2022-07-19 21:33:03,699 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 160 selfloop transitions, 32 changer transitions 7/285 dead transitions. [2022-07-19 21:33:03,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 285 transitions, 1891 flow [2022-07-19 21:33:03,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:33:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:33:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 945 transitions. [2022-07-19 21:33:03,701 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8467741935483871 [2022-07-19 21:33:03,702 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 945 transitions. [2022-07-19 21:33:03,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 945 transitions. [2022-07-19 21:33:03,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:33:03,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 945 transitions. [2022-07-19 21:33:03,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:03,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:03,707 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:03,707 INFO L186 Difference]: Start difference. First operand has 155 places, 154 transitions, 735 flow. Second operand 9 states and 945 transitions. [2022-07-19 21:33:03,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 285 transitions, 1891 flow [2022-07-19 21:33:04,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 285 transitions, 1880 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:33:04,005 INFO L242 Difference]: Finished difference. Result has 167 places, 166 transitions, 976 flow [2022-07-19 21:33:04,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=976, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2022-07-19 21:33:04,006 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 56 predicate places. [2022-07-19 21:33:04,007 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 976 flow [2022-07-19 21:33:04,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 93.54545454545455) internal successors, (1029), 11 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:04,007 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:33:04,008 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:33:04,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 21:33:04,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 21:33:04,213 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)] === [2022-07-19 21:33:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:33:04,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1360228875, now seen corresponding path program 6 times [2022-07-19 21:33:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:33:04,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872447468] [2022-07-19 21:33:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:33:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:33:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:33:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:33:04,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:33:04,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872447468] [2022-07-19 21:33:04,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872447468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:33:04,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:33:04,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:33:04,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099924896] [2022-07-19 21:33:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:33:04,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:33:04,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:33:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:33:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:33:04,270 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-19 21:33:04,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 976 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:04,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:33:04,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-19 21:33:04,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:33:11,370 INFO L129 PetriNetUnfolder]: 37262/69854 cut-off events. [2022-07-19 21:33:11,371 INFO L130 PetriNetUnfolder]: For 190063/192230 co-relation queries the response was YES. [2022-07-19 21:33:11,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 218454 conditions, 69854 events. 37262/69854 cut-off events. For 190063/192230 co-relation queries the response was YES. Maximal size of possible extension queue 3261. Compared 749880 event pairs, 14885 based on Foata normal form. 2449/71459 useless extension candidates. Maximal degree in co-relation 218421. Up to 21279 conditions per place. [2022-07-19 21:33:12,246 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 206 selfloop transitions, 46 changer transitions 6/343 dead transitions. [2022-07-19 21:33:12,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 343 transitions, 2648 flow [2022-07-19 21:33:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:33:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:33:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 644 transitions. [2022-07-19 21:33:12,249 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-07-19 21:33:12,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 644 transitions. [2022-07-19 21:33:12,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 644 transitions. [2022-07-19 21:33:12,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:33:12,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 644 transitions. [2022-07-19 21:33:12,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:12,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:12,252 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:12,252 INFO L186 Difference]: Start difference. First operand has 167 places, 166 transitions, 976 flow. Second operand 6 states and 644 transitions. [2022-07-19 21:33:12,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 343 transitions, 2648 flow [2022-07-19 21:33:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 343 transitions, 2502 flow, removed 18 selfloop flow, removed 5 redundant places. [2022-07-19 21:33:13,112 INFO L242 Difference]: Finished difference. Result has 171 places, 197 transitions, 1385 flow [2022-07-19 21:33:13,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1385, PETRI_PLACES=171, PETRI_TRANSITIONS=197} [2022-07-19 21:33:13,113 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 60 predicate places. [2022-07-19 21:33:13,113 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 197 transitions, 1385 flow [2022-07-19 21:33:13,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:13,114 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:33:13,114 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:33:13,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:33:13,114 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)] === [2022-07-19 21:33:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:33:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1475285945, now seen corresponding path program 7 times [2022-07-19 21:33:13,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:33:13,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397390359] [2022-07-19 21:33:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:33:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:33:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:33:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:33:13,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:33:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397390359] [2022-07-19 21:33:13,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397390359] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:33:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138565593] [2022-07-19 21:33:13,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-19 21:33:13,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:33:13,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:33:13,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:33:13,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:33:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:33:13,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 21:33:13,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:33:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:33:13,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:33:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:33:13,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138565593] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:33:13,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:33:13,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-07-19 21:33:13,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308057905] [2022-07-19 21:33:13,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:33:13,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:33:13,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:33:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:33:13,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:33:13,401 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-19 21:33:13,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 197 transitions, 1385 flow. Second operand has 11 states, 11 states have (on average 93.36363636363636) internal successors, (1027), 11 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:33:13,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:33:13,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-19 21:33:13,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand