./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-mts.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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:37:25,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:37:25,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:37:25,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:37:25,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:37:25,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:37:25,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:37:25,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:37:25,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:37:25,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:37:25,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:37:25,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:37:25,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:37:25,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:37:25,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:37:25,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:37:25,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:37:25,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:37:25,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:37:25,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:37:25,316 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:37:25,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:37:25,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:37:25,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:37:25,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:37:25,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:37:25,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:37:25,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:37:25,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:37:25,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:37:25,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:37:25,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:37:25,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:37:25,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:37:25,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:37:25,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:37:25,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:37:25,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:37:25,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:37:25,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:37:25,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:37:25,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:37:25,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:37:25,362 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:37:25,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:37:25,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:37:25,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:37:25,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:37:25,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:37:25,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:37:25,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:37:25,365 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:37:25,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:37:25,365 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:37:25,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:37:25,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:37:25,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:37:25,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:37:25,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:37:25,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:37:25,366 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:37:25,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:37:25,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:37:25,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:37:25,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:37:25,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:37:25,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:37:25,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:37:25,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:37:25,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:37:25,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:37:25,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:37:25,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:37:25,369 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:37:25,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:37:25,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:37:25,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2022-07-19 21:37:25,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:37:25,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:37:25,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:37:25,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:37:25,582 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:37:25,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-07-19 21:37:25,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/232d18525/98f5e237efc64d88b23a84185bb83ec8/FLAG500b502b4 [2022-07-19 21:37:25,997 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:37:25,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-07-19 21:37:26,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/232d18525/98f5e237efc64d88b23a84185bb83ec8/FLAG500b502b4 [2022-07-19 21:37:26,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/232d18525/98f5e237efc64d88b23a84185bb83ec8 [2022-07-19 21:37:26,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:37:26,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:37:26,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:37:26,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:37:26,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:37:26,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@172efe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26, skipping insertion in model container [2022-07-19 21:37:26,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:37:26,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:37:26,626 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-more-mts.wvr.c[2533,2546] [2022-07-19 21:37:26,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:37:26,640 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:37:26,656 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-more-mts.wvr.c[2533,2546] [2022-07-19 21:37:26,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:37:26,668 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:37:26,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26 WrapperNode [2022-07-19 21:37:26,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:37:26,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:37:26,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:37:26,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:37:26,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,704 INFO L137 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 229 [2022-07-19 21:37:26,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:37:26,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:37:26,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:37:26,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:37:26,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:37:26,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:37:26,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:37:26,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:37:26,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (1/1) ... [2022-07-19 21:37:26,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:37:26,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:37:26,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:37:26,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:37:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:37:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:37:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:37:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:37:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:37:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:37:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:37:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:37:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:37:26,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:37:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:37:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:37:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:37:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:37:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:37:26,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:37:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:37:26,794 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:37:26,874 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:37:26,875 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:37:27,150 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:37:27,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:37:27,268 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:37:27,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:37:27 BoogieIcfgContainer [2022-07-19 21:37:27,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:37:27,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:37:27,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:37:27,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:37:27,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:37:26" (1/3) ... [2022-07-19 21:37:27,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420f615e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:37:27, skipping insertion in model container [2022-07-19 21:37:27,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:26" (2/3) ... [2022-07-19 21:37:27,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420f615e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:37:27, skipping insertion in model container [2022-07-19 21:37:27,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:37:27" (3/3) ... [2022-07-19 21:37:27,277 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-07-19 21:37:27,282 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:37:27,288 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:37:27,289 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:37:27,289 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:37:27,364 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:37:27,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 223 places, 232 transitions, 488 flow [2022-07-19 21:37:27,455 INFO L129 PetriNetUnfolder]: 19/229 cut-off events. [2022-07-19 21:37:27,455 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:37:27,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 229 events. 19/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 337 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 186. Up to 2 conditions per place. [2022-07-19 21:37:27,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 232 transitions, 488 flow [2022-07-19 21:37:27,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 218 transitions, 454 flow [2022-07-19 21:37:27,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:37:27,479 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@6b1695f4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70d7384d [2022-07-19 21:37:27,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:37:27,514 INFO L129 PetriNetUnfolder]: 19/217 cut-off events. [2022-07-19 21:37:27,515 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:37:27,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:27,516 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:27,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:27,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1568340116, now seen corresponding path program 1 times [2022-07-19 21:37:27,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:27,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718059730] [2022-07-19 21:37:27,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:27,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:27,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:27,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718059730] [2022-07-19 21:37:27,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718059730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:37:27,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:37:27,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:37:27,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248149989] [2022-07-19 21:37:27,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:37:27,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:37:27,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:27,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:37:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:37:27,735 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 232 [2022-07-19 21:37:27,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 218 transitions, 454 flow. Second operand has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:27,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:27,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 232 [2022-07-19 21:37:27,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:27,789 INFO L129 PetriNetUnfolder]: 12/227 cut-off events. [2022-07-19 21:37:27,790 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-07-19 21:37:27,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 227 events. 12/227 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 455 event pairs, 2 based on Foata normal form. 25/235 useless extension candidates. Maximal degree in co-relation 178. Up to 15 conditions per place. [2022-07-19 21:37:27,793 INFO L132 encePairwiseOnDemand]: 220/232 looper letters, 7 selfloop transitions, 0 changer transitions 4/206 dead transitions. [2022-07-19 21:37:27,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 206 transitions, 444 flow [2022-07-19 21:37:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:37:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:37:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 443 transitions. [2022-07-19 21:37:27,807 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9547413793103449 [2022-07-19 21:37:27,808 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 443 transitions. [2022-07-19 21:37:27,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 443 transitions. [2022-07-19 21:37:27,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:27,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 443 transitions. [2022-07-19 21:37:27,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:27,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:27,822 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:27,823 INFO L186 Difference]: Start difference. First operand has 209 places, 218 transitions, 454 flow. Second operand 2 states and 443 transitions. [2022-07-19 21:37:27,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 206 transitions, 444 flow [2022-07-19 21:37:27,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 206 transitions, 432 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:37:27,832 INFO L242 Difference]: Finished difference. Result has 204 places, 202 transitions, 410 flow [2022-07-19 21:37:27,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=410, PETRI_PLACES=204, PETRI_TRANSITIONS=202} [2022-07-19 21:37:27,837 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -5 predicate places. [2022-07-19 21:37:27,838 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 202 transitions, 410 flow [2022-07-19 21:37:27,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:27,839 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:27,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:27,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:37:27,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:27,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:27,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1671150115, now seen corresponding path program 1 times [2022-07-19 21:37:27,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:27,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666450717] [2022-07-19 21:37:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:27,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:28,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:28,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666450717] [2022-07-19 21:37:28,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666450717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:37:28,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:37:28,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:37:28,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82512985] [2022-07-19 21:37:28,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:37:28,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:37:28,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:37:28,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:37:28,107 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 232 [2022-07-19 21:37:28,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 202 transitions, 410 flow. Second operand has 8 states, 8 states have (on average 175.5) internal successors, (1404), 8 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:28,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:28,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 232 [2022-07-19 21:37:28,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:28,370 INFO L129 PetriNetUnfolder]: 195/830 cut-off events. [2022-07-19 21:37:28,370 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-07-19 21:37:28,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 830 events. 195/830 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4266 event pairs, 92 based on Foata normal form. 1/663 useless extension candidates. Maximal degree in co-relation 1127. Up to 270 conditions per place. [2022-07-19 21:37:28,377 INFO L132 encePairwiseOnDemand]: 222/232 looper letters, 42 selfloop transitions, 6 changer transitions 4/210 dead transitions. [2022-07-19 21:37:28,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 210 transitions, 530 flow [2022-07-19 21:37:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:37:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:37:28,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1421 transitions. [2022-07-19 21:37:28,381 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.765625 [2022-07-19 21:37:28,381 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1421 transitions. [2022-07-19 21:37:28,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1421 transitions. [2022-07-19 21:37:28,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:28,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1421 transitions. [2022-07-19 21:37:28,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.625) internal successors, (1421), 8 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:28,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:28,389 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:28,389 INFO L186 Difference]: Start difference. First operand has 204 places, 202 transitions, 410 flow. Second operand 8 states and 1421 transitions. [2022-07-19 21:37:28,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 210 transitions, 530 flow [2022-07-19 21:37:28,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 210 transitions, 530 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:37:28,397 INFO L242 Difference]: Finished difference. Result has 211 places, 203 transitions, 438 flow [2022-07-19 21:37:28,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=438, PETRI_PLACES=211, PETRI_TRANSITIONS=203} [2022-07-19 21:37:28,398 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 2 predicate places. [2022-07-19 21:37:28,398 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 203 transitions, 438 flow [2022-07-19 21:37:28,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.5) internal successors, (1404), 8 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:28,399 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:28,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:28,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:37:28,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:28,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:28,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1212350603, now seen corresponding path program 1 times [2022-07-19 21:37:28,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:28,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476005869] [2022-07-19 21:37:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:28,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:28,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:28,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476005869] [2022-07-19 21:37:28,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476005869] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:28,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691133435] [2022-07-19 21:37:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:28,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:28,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:37:28,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:37:28,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:37:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:28,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:37:28,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:37:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:28,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:37:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:28,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691133435] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:28,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:37:28,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-19 21:37:28,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271603990] [2022-07-19 21:37:28,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:37:28,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:37:28,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:28,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:37:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:37:28,983 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 232 [2022-07-19 21:37:28,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 203 transitions, 438 flow. Second operand has 7 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:28,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:28,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 232 [2022-07-19 21:37:28,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:29,109 INFO L129 PetriNetUnfolder]: 66/501 cut-off events. [2022-07-19 21:37:29,110 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-19 21:37:29,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 501 events. 66/501 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1806 event pairs, 16 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 662. Up to 61 conditions per place. [2022-07-19 21:37:29,114 INFO L132 encePairwiseOnDemand]: 224/232 looper letters, 32 selfloop transitions, 7 changer transitions 0/210 dead transitions. [2022-07-19 21:37:29,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 210 transitions, 532 flow [2022-07-19 21:37:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:37:29,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:37:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1355 transitions. [2022-07-19 21:37:29,117 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8343596059113301 [2022-07-19 21:37:29,118 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1355 transitions. [2022-07-19 21:37:29,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1355 transitions. [2022-07-19 21:37:29,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:29,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1355 transitions. [2022-07-19 21:37:29,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 193.57142857142858) internal successors, (1355), 7 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:29,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:29,123 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:29,124 INFO L186 Difference]: Start difference. First operand has 211 places, 203 transitions, 438 flow. Second operand 7 states and 1355 transitions. [2022-07-19 21:37:29,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 210 transitions, 532 flow [2022-07-19 21:37:29,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 210 transitions, 514 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-19 21:37:29,128 INFO L242 Difference]: Finished difference. Result has 211 places, 205 transitions, 453 flow [2022-07-19 21:37:29,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=211, PETRI_TRANSITIONS=205} [2022-07-19 21:37:29,128 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 2 predicate places. [2022-07-19 21:37:29,129 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 205 transitions, 453 flow [2022-07-19 21:37:29,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:29,130 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:29,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:29,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:37:29,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:29,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:29,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1906020565, now seen corresponding path program 1 times [2022-07-19 21:37:29,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:29,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176692057] [2022-07-19 21:37:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:29,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:29,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:29,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176692057] [2022-07-19 21:37:29,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176692057] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:29,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350746051] [2022-07-19 21:37:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:29,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:29,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:37:29,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:37:29,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:37:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:29,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:37:29,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:37:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:29,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:37:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:29,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350746051] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:29,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:37:29,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-07-19 21:37:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123842569] [2022-07-19 21:37:29,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:37:29,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:37:29,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:29,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:37:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:37:29,843 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 232 [2022-07-19 21:37:29,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 205 transitions, 453 flow. Second operand has 9 states, 9 states have (on average 184.22222222222223) internal successors, (1658), 9 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:29,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:29,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 232 [2022-07-19 21:37:29,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:30,123 INFO L129 PetriNetUnfolder]: 558/1457 cut-off events. [2022-07-19 21:37:30,124 INFO L130 PetriNetUnfolder]: For 457/629 co-relation queries the response was YES. [2022-07-19 21:37:30,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 1457 events. 558/1457 cut-off events. For 457/629 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8635 event pairs, 110 based on Foata normal form. 172/1358 useless extension candidates. Maximal degree in co-relation 2658. Up to 208 conditions per place. [2022-07-19 21:37:30,134 INFO L132 encePairwiseOnDemand]: 220/232 looper letters, 71 selfloop transitions, 19 changer transitions 0/254 dead transitions. [2022-07-19 21:37:30,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 254 transitions, 780 flow [2022-07-19 21:37:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:37:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:37:30,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2075 transitions. [2022-07-19 21:37:30,137 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8130877742946708 [2022-07-19 21:37:30,137 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2075 transitions. [2022-07-19 21:37:30,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2075 transitions. [2022-07-19 21:37:30,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:30,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2075 transitions. [2022-07-19 21:37:30,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 188.63636363636363) internal successors, (2075), 11 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:30,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 232.0) internal successors, (2784), 12 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:30,144 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 232.0) internal successors, (2784), 12 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:30,145 INFO L186 Difference]: Start difference. First operand has 211 places, 205 transitions, 453 flow. Second operand 11 states and 2075 transitions. [2022-07-19 21:37:30,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 254 transitions, 780 flow [2022-07-19 21:37:30,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 254 transitions, 767 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:37:30,149 INFO L242 Difference]: Finished difference. Result has 223 places, 217 transitions, 552 flow [2022-07-19 21:37:30,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=552, PETRI_PLACES=223, PETRI_TRANSITIONS=217} [2022-07-19 21:37:30,149 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 14 predicate places. [2022-07-19 21:37:30,150 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 217 transitions, 552 flow [2022-07-19 21:37:30,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 184.22222222222223) internal successors, (1658), 9 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:30,150 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:30,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:30,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:37:30,384 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,SelfDestructingSolverStorable3 [2022-07-19 21:37:30,385 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:30,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:30,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1224231907, now seen corresponding path program 2 times [2022-07-19 21:37:30,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:30,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392970937] [2022-07-19 21:37:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:30,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:30,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:30,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392970937] [2022-07-19 21:37:30,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392970937] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:30,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119511291] [2022-07-19 21:37:30,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:37:30,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:30,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:37:30,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:37:30,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:37:30,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 21:37:30,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:37:30,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 21:37:30,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:37:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:37:30,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:37:30,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119511291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:37:30,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:37:30,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-07-19 21:37:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563237658] [2022-07-19 21:37:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:37:30,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:37:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:37:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:37:30,777 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 232 [2022-07-19 21:37:30,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 217 transitions, 552 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:30,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:30,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 232 [2022-07-19 21:37:30,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:31,003 INFO L129 PetriNetUnfolder]: 283/1226 cut-off events. [2022-07-19 21:37:31,003 INFO L130 PetriNetUnfolder]: For 584/662 co-relation queries the response was YES. [2022-07-19 21:37:31,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 1226 events. 283/1226 cut-off events. For 584/662 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6508 event pairs, 66 based on Foata normal form. 91/1215 useless extension candidates. Maximal degree in co-relation 2136. Up to 217 conditions per place. [2022-07-19 21:37:31,011 INFO L132 encePairwiseOnDemand]: 223/232 looper letters, 38 selfloop transitions, 11 changer transitions 0/217 dead transitions. [2022-07-19 21:37:31,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 217 transitions, 639 flow [2022-07-19 21:37:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:37:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:37:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1469 transitions. [2022-07-19 21:37:31,014 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7914870689655172 [2022-07-19 21:37:31,014 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1469 transitions. [2022-07-19 21:37:31,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1469 transitions. [2022-07-19 21:37:31,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:31,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1469 transitions. [2022-07-19 21:37:31,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.625) internal successors, (1469), 8 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:31,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:31,020 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:31,020 INFO L186 Difference]: Start difference. First operand has 223 places, 217 transitions, 552 flow. Second operand 8 states and 1469 transitions. [2022-07-19 21:37:31,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 217 transitions, 639 flow [2022-07-19 21:37:31,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 217 transitions, 626 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-07-19 21:37:31,024 INFO L242 Difference]: Finished difference. Result has 222 places, 211 transitions, 529 flow [2022-07-19 21:37:31,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=222, PETRI_TRANSITIONS=211} [2022-07-19 21:37:31,025 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 13 predicate places. [2022-07-19 21:37:31,025 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 211 transitions, 529 flow [2022-07-19 21:37:31,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:31,026 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:31,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:31,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:37:31,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:31,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:31,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:31,246 INFO L85 PathProgramCache]: Analyzing trace with hash 57013380, now seen corresponding path program 1 times [2022-07-19 21:37:31,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:31,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770619747] [2022-07-19 21:37:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:31,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:32,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:32,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770619747] [2022-07-19 21:37:32,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770619747] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:32,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536263253] [2022-07-19 21:37:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:32,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:32,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:37:32,169 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:37:32,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:37:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:32,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-19 21:37:32,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:37:33,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:37:33,806 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:37:33,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 31 [2022-07-19 21:37:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:33,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:37:34,651 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:37:34,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2022-07-19 21:37:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:35,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536263253] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:37:35,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:37:35,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 33, 28] total 82 [2022-07-19 21:37:35,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935561823] [2022-07-19 21:37:35,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:37:35,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-07-19 21:37:35,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-07-19 21:37:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=6235, Unknown=0, NotChecked=0, Total=6642 [2022-07-19 21:37:35,468 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 232 [2022-07-19 21:37:35,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 211 transitions, 529 flow. Second operand has 82 states, 82 states have (on average 118.07317073170732) internal successors, (9682), 82 states have internal predecessors, (9682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:35,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:35,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 232 [2022-07-19 21:37:35,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:38:27,359 INFO L129 PetriNetUnfolder]: 89768/174028 cut-off events. [2022-07-19 21:38:27,359 INFO L130 PetriNetUnfolder]: For 105640/105640 co-relation queries the response was YES. [2022-07-19 21:38:28,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 373874 conditions, 174028 events. 89768/174028 cut-off events. For 105640/105640 co-relation queries the response was YES. Maximal size of possible extension queue 2771. Compared 1890781 event pairs, 6373 based on Foata normal form. 2059/167370 useless extension candidates. Maximal degree in co-relation 373862. Up to 16455 conditions per place. [2022-07-19 21:38:28,680 INFO L132 encePairwiseOnDemand]: 172/232 looper letters, 2817 selfloop transitions, 912 changer transitions 25/3856 dead transitions. [2022-07-19 21:38:28,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 3856 transitions, 19586 flow [2022-07-19 21:38:28,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 278 states. [2022-07-19 21:38:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2022-07-19 21:38:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 35591 transitions. [2022-07-19 21:38:28,721 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5518326717935996 [2022-07-19 21:38:28,721 INFO L72 ComplementDD]: Start complementDD. Operand 278 states and 35591 transitions. [2022-07-19 21:38:28,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 278 states and 35591 transitions. [2022-07-19 21:38:28,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:38:28,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 278 states and 35591 transitions. [2022-07-19 21:38:28,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 279 states, 278 states have (on average 128.0251798561151) internal successors, (35591), 278 states have internal predecessors, (35591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:38:29,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 279 states, 279 states have (on average 232.0) internal successors, (64728), 279 states have internal predecessors, (64728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:38:29,033 INFO L81 ComplementDD]: Finished complementDD. Result has 279 states, 279 states have (on average 232.0) internal successors, (64728), 279 states have internal predecessors, (64728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:38:29,034 INFO L186 Difference]: Start difference. First operand has 222 places, 211 transitions, 529 flow. Second operand 278 states and 35591 transitions. [2022-07-19 21:38:29,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 3856 transitions, 19586 flow [2022-07-19 21:38:32,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 3856 transitions, 19279 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-19 21:38:32,638 INFO L242 Difference]: Finished difference. Result has 715 places, 1240 transitions, 8477 flow [2022-07-19 21:38:32,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=278, PETRI_FLOW=8477, PETRI_PLACES=715, PETRI_TRANSITIONS=1240} [2022-07-19 21:38:32,640 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 506 predicate places. [2022-07-19 21:38:32,640 INFO L495 AbstractCegarLoop]: Abstraction has has 715 places, 1240 transitions, 8477 flow [2022-07-19 21:38:32,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 118.07317073170732) internal successors, (9682), 82 states have internal predecessors, (9682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:38:32,642 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:38:32,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:38:32,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:38:32,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:38:32,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:38:32,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:38:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash -92300446, now seen corresponding path program 2 times [2022-07-19 21:38:32,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:38:32,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609006687] [2022-07-19 21:38:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:38:32,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:38:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:38:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:38:34,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:38:34,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609006687] [2022-07-19 21:38:34,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609006687] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:38:34,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398306136] [2022-07-19 21:38:34,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:38:34,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:38:34,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:38:34,184 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:38:34,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:38:34,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:38:34,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:38:34,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-19 21:38:34,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:38:34,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:38:34,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:38:35,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:38:35,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:38:35,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-19 21:38:36,067 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:38:36,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 40 [2022-07-19 21:38:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:38:36,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:38:37,109 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_193 (Array Int Int)) (|v_thread3Thread1of1ForFork0_~i~2#1_23| Int)) (or (< 0 |v_thread3Thread1of1ForFork0_~i~2#1_23|) (< (+ |v_thread3Thread1of1ForFork0_~i~2#1_23| 1) c_~N~0) (let ((.cse0 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) c_~A~0.base) (+ c_~A~0.offset (* |v_thread3Thread1of1ForFork0_~i~2#1_23| 4)))))) (let ((.cse1 (< .cse0 0))) (and (or (= c_~mts1~0 .cse0) .cse1) (or (not .cse1) (= c_~mts1~0 0))))))) is different from false [2022-07-19 21:38:37,954 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_193 (Array Int Int)) (|v_thread3Thread1of1ForFork0_~i~2#1_23| Int)) (let ((.cse0 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) c_~A~0.base) (+ c_~A~0.offset (* |v_thread3Thread1of1ForFork0_~i~2#1_23| 4)))))) (or (< 0 |v_thread3Thread1of1ForFork0_~i~2#1_23|) (= .cse0 0) (< (+ |v_thread3Thread1of1ForFork0_~i~2#1_23| 1) c_~N~0) (< .cse0 0)))) (<= 0 (+ |c_thread1Thread1of1ForFork1_plus_~b#1| |c_thread1Thread1of1ForFork1_plus_~a#1|))) is different from false [2022-07-19 21:38:38,110 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_193 (Array Int Int)) (|v_thread3Thread1of1ForFork0_~i~2#1_23| Int)) (let ((.cse0 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) c_~A~0.base) (+ c_~A~0.offset (* |v_thread3Thread1of1ForFork0_~i~2#1_23| 4)))))) (or (< 0 |v_thread3Thread1of1ForFork0_~i~2#1_23|) (= .cse0 0) (< (+ |v_thread3Thread1of1ForFork0_~i~2#1_23| 1) c_~N~0) (< .cse0 0)))) (<= 0 (+ |c_thread1Thread1of1ForFork1_plus_#in~b#1| |c_thread1Thread1of1ForFork1_plus_~a#1|))) is different from false [2022-07-19 21:38:38,644 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (|v_thread3Thread1of1ForFork0_~i~2#1_23| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192))) (let ((.cse0 (+ c_~mts3~0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) c_~A~0.base) (+ c_~A~0.offset (* |v_thread3Thread1of1ForFork0_~i~2#1_23| 4)))))) (or (<= (+ |v_thread3Thread1of1ForFork0_~i~2#1_23| 1) |c_thread1Thread1of1ForFork1_~i~0#1|) (< 0 |v_thread3Thread1of1ForFork0_~i~2#1_23|) (= .cse0 0) (<= 0 (+ c_~mts1~0 (select (select .cse1 c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)))) (< .cse0 0))))) is different from false [2022-07-19 21:38:38,664 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (|v_thread3Thread1of1ForFork0_~i~2#1_23| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192))) (let ((.cse0 (+ c_~mts3~0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) c_~A~0.base) (+ c_~A~0.offset (* |v_thread3Thread1of1ForFork0_~i~2#1_23| 4)))))) (or (< 0 |v_thread3Thread1of1ForFork0_~i~2#1_23|) (= .cse0 0) (<= (+ |v_thread3Thread1of1ForFork0_~i~2#1_23| 1) 0) (<= 0 (+ c_~mts1~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))) (< .cse0 0))))) is different from false [2022-07-19 21:38:38,788 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (|v_thread3Thread1of1ForFork0_~i~2#1_23| Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192))) (let ((.cse0 (+ c_~mts3~0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) c_~A~0.base) (+ c_~A~0.offset (* |v_thread3Thread1of1ForFork0_~i~2#1_23| 4)))))) (or (< 0 |v_thread3Thread1of1ForFork0_~i~2#1_23|) (<= (+ |v_thread3Thread1of1ForFork0_~i~2#1_23| 1) 0) (= .cse0 0) (< .cse0 0) (<= 0 (+ c_~mts1~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))))))) is different from false [2022-07-19 21:38:38,894 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (|v_thread3Thread1of1ForFork0_~i~2#1_23| Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192))) (let ((.cse0 (+ c_~mts3~0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_main_#t~ret20#1.base|) (+ |c_ULTIMATE.start_main_#t~ret20#1.offset| (* |v_thread3Thread1of1ForFork0_~i~2#1_23| 4)))))) (or (< 0 |v_thread3Thread1of1ForFork0_~i~2#1_23|) (<= (+ |v_thread3Thread1of1ForFork0_~i~2#1_23| 1) 0) (= .cse0 0) (< .cse0 0) (<= 0 (+ c_~mts1~0 (select (select .cse1 |c_ULTIMATE.start_main_#t~ret20#1.base|) |c_ULTIMATE.start_main_#t~ret20#1.offset|))))))) is different from false [2022-07-19 21:38:38,918 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (|v_thread3Thread1of1ForFork0_~i~2#1_23| Int)) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192))) (let ((.cse1 (+ c_~mts3~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* |v_thread3Thread1of1ForFork0_~i~2#1_23| 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))))) (or (< 0 |v_thread3Thread1of1ForFork0_~i~2#1_23|) (<= (+ |v_thread3Thread1of1ForFork0_~i~2#1_23| 1) 0) (<= 0 (+ c_~mts1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))) (= .cse1 0) (< .cse1 0))))) is different from false [2022-07-19 21:38:38,933 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (|v_thread3Thread1of1ForFork0_~i~2#1_23| Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192))) (let ((.cse0 (+ c_~mts3~0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_thread3Thread1of1ForFork0_~i~2#1_23| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (or (< .cse0 0) (< 0 |v_thread3Thread1of1ForFork0_~i~2#1_23|) (<= (+ |v_thread3Thread1of1ForFork0_~i~2#1_23| 1) 0) (<= 0 (+ c_~mts1~0 (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (= .cse0 0))))) is different from false [2022-07-19 21:38:38,995 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:38:38,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-07-19 21:38:39,004 INFO L356 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-07-19 21:38:39,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 378 treesize of output 362 [2022-07-19 21:38:39,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:38:39,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 171 [2022-07-19 21:38:39,022 INFO L356 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-07-19 21:38:39,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 344 treesize of output 320 [2022-07-19 21:38:39,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 219 [2022-07-19 21:38:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-07-19 21:38:39,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398306136] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:38:39,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:38:39,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 37, 35] total 103 [2022-07-19 21:38:39,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496705791] [2022-07-19 21:38:39,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:38:39,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-07-19 21:38:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:38:39,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-07-19 21:38:39,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=7853, Unknown=138, NotChecked=1728, Total=10506 [2022-07-19 21:38:39,620 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 232 [2022-07-19 21:38:39,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 1240 transitions, 8477 flow. Second operand has 103 states, 103 states have (on average 107.54368932038835) internal successors, (11077), 103 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:38:39,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:38:39,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 232 [2022-07-19 21:38:39,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand