./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 35987657 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-?-3598765 [2022-07-21 09:04:56,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:04:56,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:04:56,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:04:56,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:04:56,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:04:56,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:04:56,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:04:56,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:04:56,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:04:56,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:04:56,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:04:56,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:04:56,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:04:56,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:04:56,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:04:56,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:04:56,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:04:56,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:04:56,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:04:56,114 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:04:56,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:04:56,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:04:56,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:04:56,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:04:56,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:04:56,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:04:56,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:04:56,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:04:56,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:04:56,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:04:56,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:04:56,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:04:56,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:04:56,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:04:56,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:04:56,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:04:56,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:04:56,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:04:56,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:04:56,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:04:56,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:04:56,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:04:56,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:04:56,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:04:56,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:04:56,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:04:56,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:04:56,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:04:56,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:04:56,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:04:56,168 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:04:56,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:04:56,169 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:04:56,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:04:56,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:04:56,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:04:56,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:04:56,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:04:56,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:04:56,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:04:56,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:04:56,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:04:56,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:04:56,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:04:56,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:04:56,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:04:56,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:04:56,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:04:56,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:04:56,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:04:56,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:04:56,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:04:56,181 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:04:56,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:04:56,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:04:56,181 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 [2022-07-21 09:04:56,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:04:56,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:04:56,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:04:56,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:04:56,503 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:04:56,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-07-21 09:04:56,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee96ba74/861ff39e713f42a288e8245552682ac9/FLAG9e4ad5a70 [2022-07-21 09:04:56,997 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:04:57,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-07-21 09:04:57,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee96ba74/861ff39e713f42a288e8245552682ac9/FLAG9e4ad5a70 [2022-07-21 09:04:57,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee96ba74/861ff39e713f42a288e8245552682ac9 [2022-07-21 09:04:57,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:04:57,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:04:57,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:04:57,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:04:57,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:04:57,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c1ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57, skipping insertion in model container [2022-07-21 09:04:57,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:04:57,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:04:57,570 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] [2022-07-21 09:04:57,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:04:57,580 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:04:57,638 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] [2022-07-21 09:04:57,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:04:57,658 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:04:57,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57 WrapperNode [2022-07-21 09:04:57,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:04:57,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:04:57,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:04:57,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:04:57,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,710 INFO L137 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 116 [2022-07-21 09:04:57,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:04:57,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:04:57,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:04:57,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:04:57,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:04:57,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:04:57,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:04:57,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:04:57,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (1/1) ... [2022-07-21 09:04:57,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:04:57,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:04:57,792 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) [2022-07-21 09:04:57,818 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 [2022-07-21 09:04:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:04:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:04:57,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:04:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:04:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:04:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 09:04:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 09:04:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-21 09:04:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-21 09:04:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:04:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:04:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:04:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 09:04:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 09:04:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:04:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:04:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:04:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:04:57,840 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:04:57,939 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:04:57,941 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:04:58,186 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:04:58,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:04:58,247 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 09:04:58,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:04:58 BoogieIcfgContainer [2022-07-21 09:04:58,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:04:58,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:04:58,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:04:58,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:04:58,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:04:57" (1/3) ... [2022-07-21 09:04:58,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb40ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:04:58, skipping insertion in model container [2022-07-21 09:04:58,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:04:57" (2/3) ... [2022-07-21 09:04:58,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb40ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:04:58, skipping insertion in model container [2022-07-21 09:04:58,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:04:58" (3/3) ... [2022-07-21 09:04:58,257 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2022-07-21 09:04:58,262 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:04:58,270 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:04:58,271 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:04:58,271 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:04:58,358 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-21 09:04:58,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 128 places, 124 transitions, 280 flow [2022-07-21 09:04:58,463 INFO L129 PetriNetUnfolder]: 9/120 cut-off events. [2022-07-21 09:04:58,463 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 09:04:58,468 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. [2022-07-21 09:04:58,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 124 transitions, 280 flow [2022-07-21 09:04:58,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 107 transitions, 238 flow [2022-07-21 09:04:58,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:04:58,503 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@60c6139a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2847074a [2022-07-21 09:04:58,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-21 09:04:58,547 INFO L129 PetriNetUnfolder]: 9/106 cut-off events. [2022-07-21 09:04:58,548 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 09:04:58,548 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:04:58,548 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] [2022-07-21 09:04:58,549 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)] === [2022-07-21 09:04:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:04:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash -60786852, now seen corresponding path program 1 times [2022-07-21 09:04:58,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:04:58,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330574056] [2022-07-21 09:04:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:04:58,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:04:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:04:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:04:58,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:04:58,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330574056] [2022-07-21 09:04:58,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330574056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:04:58,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:04:58,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:04:58,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467055956] [2022-07-21 09:04:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:04:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:04:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:04:58,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:04:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:04:58,887 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 124 [2022-07-21 09:04:58,897 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) [2022-07-21 09:04:58,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:04:58,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 124 [2022-07-21 09:04:58,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:04:59,047 INFO L129 PetriNetUnfolder]: 121/483 cut-off events. [2022-07-21 09:04:59,051 INFO L130 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-07-21 09:04:59,055 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. [2022-07-21 09:04:59,060 INFO L132 encePairwiseOnDemand]: 119/124 looper letters, 12 selfloop transitions, 0 changer transitions 1/102 dead transitions. [2022-07-21 09:04:59,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 252 flow [2022-07-21 09:04:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:04:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 09:04:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2022-07-21 09:04:59,073 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9233870967741935 [2022-07-21 09:04:59,074 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 229 transitions. [2022-07-21 09:04:59,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 229 transitions. [2022-07-21 09:04:59,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:04:59,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 229 transitions. [2022-07-21 09:04:59,083 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) [2022-07-21 09:04:59,089 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) [2022-07-21 09:04:59,090 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) [2022-07-21 09:04:59,092 INFO L186 Difference]: Start difference. First operand has 111 places, 107 transitions, 238 flow. Second operand 2 states and 229 transitions. [2022-07-21 09:04:59,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 252 flow [2022-07-21 09:04:59,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 236 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-21 09:04:59,105 INFO L242 Difference]: Finished difference. Result has 104 places, 101 transitions, 210 flow [2022-07-21 09:04:59,107 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} [2022-07-21 09:04:59,110 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, -7 predicate places. [2022-07-21 09:04:59,111 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 210 flow [2022-07-21 09:04:59,111 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) [2022-07-21 09:04:59,112 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:04:59,112 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] [2022-07-21 09:04:59,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:04:59,113 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)] === [2022-07-21 09:04:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:04:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1089609413, now seen corresponding path program 1 times [2022-07-21 09:04:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:04:59,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414722037] [2022-07-21 09:04:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:04:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:04:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:04:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:04:59,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:04:59,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414722037] [2022-07-21 09:04:59,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414722037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:04:59,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:04:59,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:04:59,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802595838] [2022-07-21 09:04:59,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:04:59,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:04:59,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:04:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:04:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:04:59,428 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 124 [2022-07-21 09:04:59,429 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) [2022-07-21 09:04:59,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:04:59,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 124 [2022-07-21 09:04:59,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:04:59,646 INFO L129 PetriNetUnfolder]: 107/477 cut-off events. [2022-07-21 09:04:59,649 INFO L130 PetriNetUnfolder]: For 34/35 co-relation queries the response was YES. [2022-07-21 09:04:59,652 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. [2022-07-21 09:04:59,656 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 32 selfloop transitions, 5 changer transitions 5/125 dead transitions. [2022-07-21 09:04:59,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 125 transitions, 354 flow [2022-07-21 09:04:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:04:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:04:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 640 transitions. [2022-07-21 09:04:59,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8602150537634409 [2022-07-21 09:04:59,666 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 640 transitions. [2022-07-21 09:04:59,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 640 transitions. [2022-07-21 09:04:59,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:04:59,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 640 transitions. [2022-07-21 09:04:59,670 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) [2022-07-21 09:04:59,673 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) [2022-07-21 09:04:59,674 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) [2022-07-21 09:04:59,674 INFO L186 Difference]: Start difference. First operand has 104 places, 101 transitions, 210 flow. Second operand 6 states and 640 transitions. [2022-07-21 09:04:59,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 125 transitions, 354 flow [2022-07-21 09:04:59,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 125 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:04:59,684 INFO L242 Difference]: Finished difference. Result has 112 places, 104 transitions, 249 flow [2022-07-21 09:04:59,684 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} [2022-07-21 09:04:59,685 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 1 predicate places. [2022-07-21 09:04:59,686 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 249 flow [2022-07-21 09:04:59,686 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) [2022-07-21 09:04:59,686 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:04:59,687 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] [2022-07-21 09:04:59,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:04:59,687 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)] === [2022-07-21 09:04:59,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:04:59,688 INFO L85 PathProgramCache]: Analyzing trace with hash -204747371, now seen corresponding path program 1 times [2022-07-21 09:04:59,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:04:59,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432221933] [2022-07-21 09:04:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:04:59,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:04:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:04:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:04:59,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:04:59,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432221933] [2022-07-21 09:04:59,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432221933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:04:59,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:04:59,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:04:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886092484] [2022-07-21 09:04:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:04:59,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:04:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:04:59,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:04:59,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:04:59,807 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-21 09:04:59,807 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) [2022-07-21 09:04:59,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:04:59,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-21 09:04:59,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:05:01,106 INFO L129 PetriNetUnfolder]: 6700/10882 cut-off events. [2022-07-21 09:05:01,106 INFO L130 PetriNetUnfolder]: For 1841/1841 co-relation queries the response was YES. [2022-07-21 09:05:01,135 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. [2022-07-21 09:05:01,218 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 65 selfloop transitions, 5 changer transitions 11/154 dead transitions. [2022-07-21 09:05:01,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 154 transitions, 551 flow [2022-07-21 09:05:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:05:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:05:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2022-07-21 09:05:01,225 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8279569892473119 [2022-07-21 09:05:01,225 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2022-07-21 09:05:01,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2022-07-21 09:05:01,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:05:01,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2022-07-21 09:05:01,228 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) [2022-07-21 09:05:01,229 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) [2022-07-21 09:05:01,230 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) [2022-07-21 09:05:01,230 INFO L186 Difference]: Start difference. First operand has 112 places, 104 transitions, 249 flow. Second operand 6 states and 616 transitions. [2022-07-21 09:05:01,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 154 transitions, 551 flow [2022-07-21 09:05:01,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 547 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 09:05:01,239 INFO L242 Difference]: Finished difference. Result has 116 places, 106 transitions, 271 flow [2022-07-21 09:05:01,239 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} [2022-07-21 09:05:01,241 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 5 predicate places. [2022-07-21 09:05:01,242 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 271 flow [2022-07-21 09:05:01,242 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) [2022-07-21 09:05:01,242 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:05:01,243 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] [2022-07-21 09:05:01,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:05:01,243 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)] === [2022-07-21 09:05:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:05:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1323837765, now seen corresponding path program 2 times [2022-07-21 09:05:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:05:01,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365868883] [2022-07-21 09:05:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:05:01,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:05:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:05:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:01,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:05:01,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365868883] [2022-07-21 09:05:01,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365868883] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:05:01,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426109767] [2022-07-21 09:05:01,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:05:01,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:05:01,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:05:01,360 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) [2022-07-21 09:05:01,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:05:01,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:05:01,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:05:01,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 09:05:01,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:05:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:01,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:05:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:01,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426109767] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:05:01,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:05:01,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-07-21 09:05:01,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134097867] [2022-07-21 09:05:01,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:05:01,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:05:01,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:05:01,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:05:01,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:05:01,591 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-21 09:05:01,593 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) [2022-07-21 09:05:01,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:05:01,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-21 09:05:01,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:05:03,412 INFO L129 PetriNetUnfolder]: 11071/18071 cut-off events. [2022-07-21 09:05:03,413 INFO L130 PetriNetUnfolder]: For 5813/6596 co-relation queries the response was YES. [2022-07-21 09:05:03,482 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. [2022-07-21 09:05:03,650 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 185 selfloop transitions, 24 changer transitions 3/286 dead transitions. [2022-07-21 09:05:03,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 286 transitions, 1280 flow [2022-07-21 09:05:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:05:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 09:05:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1452 transitions. [2022-07-21 09:05:03,661 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.836405529953917 [2022-07-21 09:05:03,661 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1452 transitions. [2022-07-21 09:05:03,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1452 transitions. [2022-07-21 09:05:03,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:05:03,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1452 transitions. [2022-07-21 09:05:03,666 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) [2022-07-21 09:05:03,669 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) [2022-07-21 09:05:03,670 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) [2022-07-21 09:05:03,670 INFO L186 Difference]: Start difference. First operand has 116 places, 106 transitions, 271 flow. Second operand 14 states and 1452 transitions. [2022-07-21 09:05:03,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 286 transitions, 1280 flow [2022-07-21 09:05:03,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 286 transitions, 1264 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-07-21 09:05:03,694 INFO L242 Difference]: Finished difference. Result has 132 places, 132 transitions, 421 flow [2022-07-21 09:05:03,694 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} [2022-07-21 09:05:03,696 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 21 predicate places. [2022-07-21 09:05:03,696 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 421 flow [2022-07-21 09:05:03,696 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) [2022-07-21 09:05:03,697 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:05:03,697 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] [2022-07-21 09:05:03,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:05:03,919 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 [2022-07-21 09:05:03,920 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)] === [2022-07-21 09:05:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:05:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash -476073083, now seen corresponding path program 1 times [2022-07-21 09:05:03,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:05:03,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119846754] [2022-07-21 09:05:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:05:03,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:05:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:05:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:03,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:05:03,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119846754] [2022-07-21 09:05:03,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119846754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:05:03,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:05:03,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:05:03,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690451340] [2022-07-21 09:05:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:05:03,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:05:03,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:05:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:05:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:05:03,976 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-21 09:05:03,977 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) [2022-07-21 09:05:03,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:05:03,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-21 09:05:03,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:05:06,839 INFO L129 PetriNetUnfolder]: 20247/32769 cut-off events. [2022-07-21 09:05:06,840 INFO L130 PetriNetUnfolder]: For 36066/39241 co-relation queries the response was YES. [2022-07-21 09:05:06,995 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. [2022-07-21 09:05:07,303 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 132 selfloop transitions, 6 changer transitions 5/229 dead transitions. [2022-07-21 09:05:07,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 229 transitions, 1137 flow [2022-07-21 09:05:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:05:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:05:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2022-07-21 09:05:07,306 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8279569892473119 [2022-07-21 09:05:07,306 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2022-07-21 09:05:07,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2022-07-21 09:05:07,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:05:07,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2022-07-21 09:05:07,308 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) [2022-07-21 09:05:07,310 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) [2022-07-21 09:05:07,312 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) [2022-07-21 09:05:07,312 INFO L186 Difference]: Start difference. First operand has 132 places, 132 transitions, 421 flow. Second operand 6 states and 616 transitions. [2022-07-21 09:05:07,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 229 transitions, 1137 flow [2022-07-21 09:05:07,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 229 transitions, 1137 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:05:07,354 INFO L242 Difference]: Finished difference. Result has 140 places, 134 transitions, 451 flow [2022-07-21 09:05:07,355 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} [2022-07-21 09:05:07,357 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 29 predicate places. [2022-07-21 09:05:07,357 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 134 transitions, 451 flow [2022-07-21 09:05:07,358 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) [2022-07-21 09:05:07,358 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:05:07,358 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] [2022-07-21 09:05:07,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:05:07,359 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)] === [2022-07-21 09:05:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:05:07,360 INFO L85 PathProgramCache]: Analyzing trace with hash -262993417, now seen corresponding path program 2 times [2022-07-21 09:05:07,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:05:07,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060025677] [2022-07-21 09:05:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:05:07,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:05:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:05:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:07,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:05:07,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060025677] [2022-07-21 09:05:07,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060025677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:05:07,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:05:07,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:05:07,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214621527] [2022-07-21 09:05:07,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:05:07,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:05:07,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:05:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:05:07,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:05:07,452 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-21 09:05:07,452 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) [2022-07-21 09:05:07,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:05:07,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-21 09:05:07,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:05:10,500 INFO L129 PetriNetUnfolder]: 20357/37477 cut-off events. [2022-07-21 09:05:10,500 INFO L130 PetriNetUnfolder]: For 44264/47262 co-relation queries the response was YES. [2022-07-21 09:05:10,669 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. [2022-07-21 09:05:10,856 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 81 selfloop transitions, 8 changer transitions 15/187 dead transitions. [2022-07-21 09:05:10,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 187 transitions, 890 flow [2022-07-21 09:05:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:05:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:05:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 617 transitions. [2022-07-21 09:05:10,859 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8293010752688172 [2022-07-21 09:05:10,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 617 transitions. [2022-07-21 09:05:10,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 617 transitions. [2022-07-21 09:05:10,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:05:10,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 617 transitions. [2022-07-21 09:05:10,861 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) [2022-07-21 09:05:10,863 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) [2022-07-21 09:05:10,863 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) [2022-07-21 09:05:10,863 INFO L186 Difference]: Start difference. First operand has 140 places, 134 transitions, 451 flow. Second operand 6 states and 617 transitions. [2022-07-21 09:05:10,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 187 transitions, 890 flow [2022-07-21 09:05:10,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 187 transitions, 884 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:05:10,992 INFO L242 Difference]: Finished difference. Result has 145 places, 134 transitions, 468 flow [2022-07-21 09:05:10,992 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} [2022-07-21 09:05:10,993 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 34 predicate places. [2022-07-21 09:05:10,993 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 134 transitions, 468 flow [2022-07-21 09:05:10,993 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) [2022-07-21 09:05:10,993 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:05:10,994 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] [2022-07-21 09:05:10,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:05:10,994 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)] === [2022-07-21 09:05:10,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:05:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash 867506165, now seen corresponding path program 3 times [2022-07-21 09:05:10,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:05:10,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310662711] [2022-07-21 09:05:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:05:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:05:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:05:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:11,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:05:11,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310662711] [2022-07-21 09:05:11,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310662711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:05:11,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:05:11,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:05:11,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218051390] [2022-07-21 09:05:11,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:05:11,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:05:11,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:05:11,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:05:11,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:05:11,039 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-21 09:05:11,040 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) [2022-07-21 09:05:11,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:05:11,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-21 09:05:11,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:05:14,789 INFO L129 PetriNetUnfolder]: 25616/44154 cut-off events. [2022-07-21 09:05:14,789 INFO L130 PetriNetUnfolder]: For 51022/52568 co-relation queries the response was YES. [2022-07-21 09:05:14,988 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. [2022-07-21 09:05:15,150 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 116 selfloop transitions, 16 changer transitions 1/211 dead transitions. [2022-07-21 09:05:15,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 211 transitions, 1092 flow [2022-07-21 09:05:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:05:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:05:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 619 transitions. [2022-07-21 09:05:15,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.831989247311828 [2022-07-21 09:05:15,153 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 619 transitions. [2022-07-21 09:05:15,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 619 transitions. [2022-07-21 09:05:15,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:05:15,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 619 transitions. [2022-07-21 09:05:15,154 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) [2022-07-21 09:05:15,156 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) [2022-07-21 09:05:15,156 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) [2022-07-21 09:05:15,156 INFO L186 Difference]: Start difference. First operand has 145 places, 134 transitions, 468 flow. Second operand 6 states and 619 transitions. [2022-07-21 09:05:15,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 211 transitions, 1092 flow [2022-07-21 09:05:15,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 211 transitions, 1077 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-21 09:05:15,600 INFO L242 Difference]: Finished difference. Result has 149 places, 140 transitions, 560 flow [2022-07-21 09:05:15,600 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} [2022-07-21 09:05:15,601 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 38 predicate places. [2022-07-21 09:05:15,601 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 140 transitions, 560 flow [2022-07-21 09:05:15,601 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) [2022-07-21 09:05:15,602 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:05:15,602 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] [2022-07-21 09:05:15,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:05:15,602 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)] === [2022-07-21 09:05:15,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:05:15,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1370995851, now seen corresponding path program 4 times [2022-07-21 09:05:15,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:05:15,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657430971] [2022-07-21 09:05:15,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:05:15,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:05:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:05:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:15,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:05:15,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657430971] [2022-07-21 09:05:15,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657430971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:05:15,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:05:15,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:05:15,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266607671] [2022-07-21 09:05:15,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:05:15,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:05:15,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:05:15,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:05:15,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:05:15,652 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-21 09:05:15,653 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) [2022-07-21 09:05:15,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:05:15,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-21 09:05:15,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:05:20,910 INFO L129 PetriNetUnfolder]: 32078/59641 cut-off events. [2022-07-21 09:05:20,911 INFO L130 PetriNetUnfolder]: For 107458/112647 co-relation queries the response was YES. [2022-07-21 09:05:21,253 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. [2022-07-21 09:05:21,475 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 132 selfloop transitions, 19 changer transitions 4/241 dead transitions. [2022-07-21 09:05:21,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 241 transitions, 1397 flow [2022-07-21 09:05:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:05:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:05:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2022-07-21 09:05:21,477 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8682795698924731 [2022-07-21 09:05:21,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 646 transitions. [2022-07-21 09:05:21,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 646 transitions. [2022-07-21 09:05:21,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:05:21,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 646 transitions. [2022-07-21 09:05:21,479 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) [2022-07-21 09:05:21,481 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) [2022-07-21 09:05:21,481 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) [2022-07-21 09:05:21,481 INFO L186 Difference]: Start difference. First operand has 149 places, 140 transitions, 560 flow. Second operand 6 states and 646 transitions. [2022-07-21 09:05:21,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 241 transitions, 1397 flow [2022-07-21 09:05:21,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 241 transitions, 1362 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-07-21 09:05:21,928 INFO L242 Difference]: Finished difference. Result has 155 places, 154 transitions, 735 flow [2022-07-21 09:05:21,928 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} [2022-07-21 09:05:21,929 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 44 predicate places. [2022-07-21 09:05:21,929 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 735 flow [2022-07-21 09:05:21,929 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) [2022-07-21 09:05:21,929 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:05:21,930 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] [2022-07-21 09:05:21,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:05:21,930 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)] === [2022-07-21 09:05:21,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:05:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash -233866269, now seen corresponding path program 5 times [2022-07-21 09:05:21,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:05:21,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562749352] [2022-07-21 09:05:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:05:21,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:05:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:05:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:05:22,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562749352] [2022-07-21 09:05:22,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562749352] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:05:22,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164489413] [2022-07-21 09:05:22,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 09:05:22,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:05:22,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:05:22,005 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) [2022-07-21 09:05:22,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:05:22,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:05:22,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:05:22,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 09:05:22,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:05:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:22,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:05:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:22,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164489413] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:05:22,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:05:22,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-07-21 09:05:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453645034] [2022-07-21 09:05:22,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:05:22,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:05:22,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:05:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:05:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:05:22,207 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-21 09:05:22,208 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) [2022-07-21 09:05:22,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:05:22,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-21 09:05:22,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:05:27,143 INFO L129 PetriNetUnfolder]: 31293/54958 cut-off events. [2022-07-21 09:05:27,143 INFO L130 PetriNetUnfolder]: For 120595/125996 co-relation queries the response was YES. [2022-07-21 09:05:27,519 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. [2022-07-21 09:05:27,981 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 160 selfloop transitions, 32 changer transitions 7/285 dead transitions. [2022-07-21 09:05:27,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 285 transitions, 1891 flow [2022-07-21 09:05:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:05:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:05:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 945 transitions. [2022-07-21 09:05:27,985 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8467741935483871 [2022-07-21 09:05:27,985 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 945 transitions. [2022-07-21 09:05:27,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 945 transitions. [2022-07-21 09:05:27,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:05:27,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 945 transitions. [2022-07-21 09:05:27,989 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) [2022-07-21 09:05:27,992 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) [2022-07-21 09:05:27,993 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) [2022-07-21 09:05:27,993 INFO L186 Difference]: Start difference. First operand has 155 places, 154 transitions, 735 flow. Second operand 9 states and 945 transitions. [2022-07-21 09:05:27,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 285 transitions, 1891 flow [2022-07-21 09:05:28,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 285 transitions, 1880 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:05:28,354 INFO L242 Difference]: Finished difference. Result has 167 places, 166 transitions, 976 flow [2022-07-21 09:05:28,354 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} [2022-07-21 09:05:28,354 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 56 predicate places. [2022-07-21 09:05:28,355 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 976 flow [2022-07-21 09:05:28,355 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) [2022-07-21 09:05:28,355 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:05:28,355 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] [2022-07-21 09:05:28,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 09:05:28,556 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 [2022-07-21 09:05:28,556 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)] === [2022-07-21 09:05:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:05:28,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1360228875, now seen corresponding path program 6 times [2022-07-21 09:05:28,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:05:28,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443702288] [2022-07-21 09:05:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:05:28,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:05:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:05:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:28,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:05:28,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443702288] [2022-07-21 09:05:28,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443702288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:05:28,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:05:28,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:05:28,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008895071] [2022-07-21 09:05:28,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:05:28,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:05:28,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:05:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:05:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:05:28,611 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-21 09:05:28,612 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) [2022-07-21 09:05:28,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:05:28,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-21 09:05:28,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:05:35,566 INFO L129 PetriNetUnfolder]: 37262/69854 cut-off events. [2022-07-21 09:05:35,567 INFO L130 PetriNetUnfolder]: For 190063/192230 co-relation queries the response was YES. [2022-07-21 09:05:36,496 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. [2022-07-21 09:05:36,799 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 206 selfloop transitions, 46 changer transitions 6/343 dead transitions. [2022-07-21 09:05:36,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 343 transitions, 2648 flow [2022-07-21 09:05:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:05:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:05:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 644 transitions. [2022-07-21 09:05:36,801 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-07-21 09:05:36,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 644 transitions. [2022-07-21 09:05:36,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 644 transitions. [2022-07-21 09:05:36,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:05:36,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 644 transitions. [2022-07-21 09:05:36,803 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) [2022-07-21 09:05:36,805 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) [2022-07-21 09:05:36,805 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) [2022-07-21 09:05:36,805 INFO L186 Difference]: Start difference. First operand has 167 places, 166 transitions, 976 flow. Second operand 6 states and 644 transitions. [2022-07-21 09:05:36,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 343 transitions, 2648 flow [2022-07-21 09:05:37,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 343 transitions, 2502 flow, removed 18 selfloop flow, removed 5 redundant places. [2022-07-21 09:05:37,604 INFO L242 Difference]: Finished difference. Result has 171 places, 197 transitions, 1385 flow [2022-07-21 09:05:37,604 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} [2022-07-21 09:05:37,605 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 60 predicate places. [2022-07-21 09:05:37,605 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 197 transitions, 1385 flow [2022-07-21 09:05:37,605 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) [2022-07-21 09:05:37,605 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:05:37,605 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] [2022-07-21 09:05:37,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:05:37,606 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)] === [2022-07-21 09:05:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:05:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1475285945, now seen corresponding path program 7 times [2022-07-21 09:05:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:05:37,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806458847] [2022-07-21 09:05:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:05:37,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:05:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:05:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:37,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:05:37,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806458847] [2022-07-21 09:05:37,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806458847] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:05:37,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399151880] [2022-07-21 09:05:37,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-21 09:05:37,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:05:37,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:05:37,664 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) [2022-07-21 09:05:37,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:05:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:05:37,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 09:05:37,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:05:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:37,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:05:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:05:37,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399151880] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:05:37,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:05:37,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-07-21 09:05:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270446157] [2022-07-21 09:05:37,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:05:37,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:05:37,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:05:37,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:05:37,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:05:37,851 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2022-07-21 09:05:37,852 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) [2022-07-21 09:05:37,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:05:37,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2022-07-21 09:05:37,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand