/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:33:45,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:33:45,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:33:45,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:33:45,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:33:45,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:33:45,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:33:45,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:33:45,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:33:45,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:33:45,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:33:45,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:33:45,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:33:45,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:33:45,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:33:45,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:33:45,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:33:45,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:33:45,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:33:45,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:33:45,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:33:45,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:33:45,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:33:45,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:33:45,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:33:45,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:33:45,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:33:45,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:33:45,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:33:45,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:33:45,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:33:45,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:33:45,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:33:45,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:33:45,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:33:45,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:33:45,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:33:45,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:33:45,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:33:45,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:33:45,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:33:45,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 17:33:45,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:33:45,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:33:45,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:33:45,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:33:45,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:33:45,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:33:45,803 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:33:45,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:33:45,803 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:33:45,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:33:45,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:33:45,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:33:45,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:33:45,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:33:45,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:33:45,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:33:45,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:33:45,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:33:45,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:33:45,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:33:45,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:33:45,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:33:45,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:33:45,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:33:45,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:33:45,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:33:45,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:33:45,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:33:45,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:33:45,806 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:33:45,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:33:45,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:33:46,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:33:46,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:33:46,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:33:46,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:33:46,052 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:33:46,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-12-06 17:33:47,249 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:33:47,438 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:33:47,438 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-12-06 17:33:47,444 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90dae8a07/bef7f051772e4b1287da061629820c6d/FLAG5524ee4a9 [2022-12-06 17:33:47,454 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90dae8a07/bef7f051772e4b1287da061629820c6d [2022-12-06 17:33:47,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:33:47,457 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:33:47,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:33:47,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:33:47,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:33:47,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664ecd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47, skipping insertion in model container [2022-12-06 17:33:47,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:33:47,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:33:47,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:33:47,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:33:47,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:33:47,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:33:47,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:33:47,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:33:47,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:33:47,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:33:47,582 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-12-06 17:33:47,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:33:47,591 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:33:47,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:33:47,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:33:47,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:33:47,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:33:47,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:33:47,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:33:47,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:33:47,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:33:47,604 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-12-06 17:33:47,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:33:47,614 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:33:47,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47 WrapperNode [2022-12-06 17:33:47,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:33:47,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:33:47,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:33:47,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:33:47,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,636 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-12-06 17:33:47,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:33:47,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:33:47,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:33:47,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:33:47,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,661 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:33:47,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:33:47,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:33:47,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:33:47,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (1/1) ... [2022-12-06 17:33:47,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:33:47,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:33:47,704 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) [2022-12-06 17:33:47,733 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 [2022-12-06 17:33:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:33:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:33:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:33:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:33:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:33:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:33:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:33:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:33:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 17:33:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 17:33:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:33:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:33:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:33:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:33:47,746 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:33:47,800 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:33:47,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:33:47,916 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:33:47,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:33:47,930 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-06 17:33:47,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:47 BoogieIcfgContainer [2022-12-06 17:33:47,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:33:47,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:33:47,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:33:47,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:33:47,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:33:47" (1/3) ... [2022-12-06 17:33:47,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1764a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:33:47, skipping insertion in model container [2022-12-06 17:33:47,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:47" (2/3) ... [2022-12-06 17:33:47,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1764a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:33:47, skipping insertion in model container [2022-12-06 17:33:47,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:47" (3/3) ... [2022-12-06 17:33:47,936 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-12-06 17:33:47,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:33:47,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:33:47,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:33:48,028 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 17:33:48,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 97 transitions, 210 flow [2022-12-06 17:33:48,094 INFO L130 PetriNetUnfolder]: 8/95 cut-off events. [2022-12-06 17:33:48,095 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:33:48,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 8/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-12-06 17:33:48,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 97 transitions, 210 flow [2022-12-06 17:33:48,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 87 transitions, 186 flow [2022-12-06 17:33:48,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:33:48,113 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@cfb4ce9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:33:48,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 17:33:48,137 INFO L130 PetriNetUnfolder]: 8/86 cut-off events. [2022-12-06 17:33:48,137 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:33:48,137 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:48,138 INFO L213 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] [2022-12-06 17:33:48,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash 747985082, now seen corresponding path program 1 times [2022-12-06 17:33:48,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:48,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154471203] [2022-12-06 17:33:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:48,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:48,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154471203] [2022-12-06 17:33:48,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154471203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:48,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:48,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:33:48,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302143899] [2022-12-06 17:33:48,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:48,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:33:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:33:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:33:48,803 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-06 17:33:48,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-12-06 17:33:48,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:48,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-06 17:33:48,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:48,985 INFO L130 PetriNetUnfolder]: 22/142 cut-off events. [2022-12-06 17:33:48,985 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-06 17:33:48,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 142 events. 22/142 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 284 event pairs, 0 based on Foata normal form. 14/142 useless extension candidates. Maximal degree in co-relation 97. Up to 33 conditions per place. [2022-12-06 17:33:48,988 INFO L137 encePairwiseOnDemand]: 79/97 looper letters, 15 selfloop transitions, 9 changer transitions 7/94 dead transitions. [2022-12-06 17:33:48,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 271 flow [2022-12-06 17:33:48,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 17:33:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 17:33:49,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 687 transitions. [2022-12-06 17:33:49,006 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7869415807560137 [2022-12-06 17:33:49,009 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2022-12-06 17:33:49,009 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 271 flow [2022-12-06 17:33:49,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-12-06 17:33:49,010 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:49,010 INFO L213 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] [2022-12-06 17:33:49,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:33:49,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1494380371, now seen corresponding path program 1 times [2022-12-06 17:33:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:49,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425534670] [2022-12-06 17:33:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:49,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:49,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:49,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425534670] [2022-12-06 17:33:49,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425534670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:49,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:49,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:33:49,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423364282] [2022-12-06 17:33:49,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:49,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:33:49,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:49,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:33:49,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:33:49,351 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-12-06 17:33:49,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 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) [2022-12-06 17:33:49,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:49,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-12-06 17:33:49,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:49,516 INFO L130 PetriNetUnfolder]: 88/320 cut-off events. [2022-12-06 17:33:49,516 INFO L131 PetriNetUnfolder]: For 155/165 co-relation queries the response was YES. [2022-12-06 17:33:49,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 320 events. 88/320 cut-off events. For 155/165 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1308 event pairs, 8 based on Foata normal form. 1/271 useless extension candidates. Maximal degree in co-relation 383. Up to 81 conditions per place. [2022-12-06 17:33:49,523 INFO L137 encePairwiseOnDemand]: 87/97 looper letters, 39 selfloop transitions, 8 changer transitions 8/114 dead transitions. [2022-12-06 17:33:49,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 455 flow [2022-12-06 17:33:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:33:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:33:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 514 transitions. [2022-12-06 17:33:49,525 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7569955817378498 [2022-12-06 17:33:49,525 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2022-12-06 17:33:49,525 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 455 flow [2022-12-06 17:33:49,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 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) [2022-12-06 17:33:49,526 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:49,526 INFO L213 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] [2022-12-06 17:33:49,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:33:49,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1793761617, now seen corresponding path program 2 times [2022-12-06 17:33:49,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:49,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431516456] [2022-12-06 17:33:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:49,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:49,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:49,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431516456] [2022-12-06 17:33:49,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431516456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:49,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:49,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:33:49,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397981271] [2022-12-06 17:33:49,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:49,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:33:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:49,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:33:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:33:49,799 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-12-06 17:33:49,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 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) [2022-12-06 17:33:49,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:49,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-12-06 17:33:49,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:49,897 INFO L130 PetriNetUnfolder]: 85/292 cut-off events. [2022-12-06 17:33:49,897 INFO L131 PetriNetUnfolder]: For 233/288 co-relation queries the response was YES. [2022-12-06 17:33:49,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 292 events. 85/292 cut-off events. For 233/288 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1129 event pairs, 6 based on Foata normal form. 1/251 useless extension candidates. Maximal degree in co-relation 453. Up to 71 conditions per place. [2022-12-06 17:33:49,899 INFO L137 encePairwiseOnDemand]: 87/97 looper letters, 34 selfloop transitions, 7 changer transitions 10/110 dead transitions. [2022-12-06 17:33:49,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 110 transitions, 531 flow [2022-12-06 17:33:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:33:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:33:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 505 transitions. [2022-12-06 17:33:49,901 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7437407952871871 [2022-12-06 17:33:49,902 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 20 predicate places. [2022-12-06 17:33:49,902 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 531 flow [2022-12-06 17:33:49,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 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) [2022-12-06 17:33:49,903 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:49,903 INFO L213 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] [2022-12-06 17:33:49,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 17:33:49,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:49,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1101722620, now seen corresponding path program 1 times [2022-12-06 17:33:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:49,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91670369] [2022-12-06 17:33:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:49,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:50,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:50,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91670369] [2022-12-06 17:33:50,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91670369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:50,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:50,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:33:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389164720] [2022-12-06 17:33:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:50,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:33:50,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:33:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:33:50,033 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2022-12-06 17:33:50,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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) [2022-12-06 17:33:50,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:50,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2022-12-06 17:33:50,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:50,180 INFO L130 PetriNetUnfolder]: 115/382 cut-off events. [2022-12-06 17:33:50,180 INFO L131 PetriNetUnfolder]: For 547/627 co-relation queries the response was YES. [2022-12-06 17:33:50,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 382 events. 115/382 cut-off events. For 547/627 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1785 event pairs, 5 based on Foata normal form. 2/334 useless extension candidates. Maximal degree in co-relation 779. Up to 118 conditions per place. [2022-12-06 17:33:50,182 INFO L137 encePairwiseOnDemand]: 83/97 looper letters, 53 selfloop transitions, 14 changer transitions 14/136 dead transitions. [2022-12-06 17:33:50,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 136 transitions, 857 flow [2022-12-06 17:33:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:33:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:33:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 560 transitions. [2022-12-06 17:33:50,184 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2022-12-06 17:33:50,185 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 27 predicate places. [2022-12-06 17:33:50,185 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 136 transitions, 857 flow [2022-12-06 17:33:50,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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) [2022-12-06 17:33:50,185 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:50,185 INFO L213 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] [2022-12-06 17:33:50,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:33:50,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:50,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:50,186 INFO L85 PathProgramCache]: Analyzing trace with hash -616048748, now seen corresponding path program 2 times [2022-12-06 17:33:50,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:50,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102297853] [2022-12-06 17:33:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:50,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102297853] [2022-12-06 17:33:50,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102297853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:50,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:50,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:33:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153855408] [2022-12-06 17:33:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:33:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:33:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:33:50,303 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2022-12-06 17:33:50,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 136 transitions, 857 flow. Second operand has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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) [2022-12-06 17:33:50,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:50,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2022-12-06 17:33:50,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:50,418 INFO L130 PetriNetUnfolder]: 106/368 cut-off events. [2022-12-06 17:33:50,418 INFO L131 PetriNetUnfolder]: For 839/1108 co-relation queries the response was YES. [2022-12-06 17:33:50,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 368 events. 106/368 cut-off events. For 839/1108 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1599 event pairs, 5 based on Foata normal form. 13/337 useless extension candidates. Maximal degree in co-relation 913. Up to 113 conditions per place. [2022-12-06 17:33:50,421 INFO L137 encePairwiseOnDemand]: 85/97 looper letters, 59 selfloop transitions, 17 changer transitions 14/145 dead transitions. [2022-12-06 17:33:50,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 145 transitions, 1100 flow [2022-12-06 17:33:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:33:50,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:33:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 554 transitions. [2022-12-06 17:33:50,422 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7139175257731959 [2022-12-06 17:33:50,423 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 34 predicate places. [2022-12-06 17:33:50,423 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 145 transitions, 1100 flow [2022-12-06 17:33:50,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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) [2022-12-06 17:33:50,423 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:50,423 INFO L213 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] [2022-12-06 17:33:50,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:33:50,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1521042321, now seen corresponding path program 1 times [2022-12-06 17:33:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:50,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751803604] [2022-12-06 17:33:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:50,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:50,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751803604] [2022-12-06 17:33:50,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751803604] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:33:50,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784564947] [2022-12-06 17:33:50,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:50,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:33:50,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:33:50,672 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) [2022-12-06 17:33:50,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 17:33:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:50,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-06 17:33:50,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:33:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:50,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:33:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:51,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784564947] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:33:51,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:33:51,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-06 17:33:51,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706465887] [2022-12-06 17:33:51,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:33:51,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:33:51,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:33:51,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:33:51,192 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-06 17:33:51,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 145 transitions, 1100 flow. Second operand has 20 states, 20 states have (on average 63.05) internal successors, (1261), 20 states have internal predecessors, (1261), 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) [2022-12-06 17:33:51,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:51,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-06 17:33:51,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:52,530 INFO L130 PetriNetUnfolder]: 312/827 cut-off events. [2022-12-06 17:33:52,530 INFO L131 PetriNetUnfolder]: For 2306/2499 co-relation queries the response was YES. [2022-12-06 17:33:52,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3305 conditions, 827 events. 312/827 cut-off events. For 2306/2499 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4098 event pairs, 4 based on Foata normal form. 11/751 useless extension candidates. Maximal degree in co-relation 2874. Up to 357 conditions per place. [2022-12-06 17:33:52,536 INFO L137 encePairwiseOnDemand]: 77/97 looper letters, 160 selfloop transitions, 75 changer transitions 14/302 dead transitions. [2022-12-06 17:33:52,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 302 transitions, 2975 flow [2022-12-06 17:33:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-06 17:33:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-06 17:33:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2553 transitions. [2022-12-06 17:33:52,542 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6748612212529739 [2022-12-06 17:33:52,544 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 72 predicate places. [2022-12-06 17:33:52,544 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 302 transitions, 2975 flow [2022-12-06 17:33:52,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 63.05) internal successors, (1261), 20 states have internal predecessors, (1261), 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) [2022-12-06 17:33:52,545 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:52,545 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:52,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 17:33:52,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-06 17:33:52,751 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash -630446162, now seen corresponding path program 2 times [2022-12-06 17:33:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:52,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737629987] [2022-12-06 17:33:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-06 17:33:52,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:52,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737629987] [2022-12-06 17:33:52,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737629987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:52,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:52,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 17:33:52,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632137806] [2022-12-06 17:33:52,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:52,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 17:33:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 17:33:52,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 17:33:52,842 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-06 17:33:52,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 302 transitions, 2975 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-12-06 17:33:52,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:52,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-06 17:33:52,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:53,054 INFO L130 PetriNetUnfolder]: 680/1820 cut-off events. [2022-12-06 17:33:53,054 INFO L131 PetriNetUnfolder]: For 6873/7347 co-relation queries the response was YES. [2022-12-06 17:33:53,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 1820 events. 680/1820 cut-off events. For 6873/7347 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12558 event pairs, 12 based on Foata normal form. 83/1708 useless extension candidates. Maximal degree in co-relation 6480. Up to 825 conditions per place. [2022-12-06 17:33:53,068 INFO L137 encePairwiseOnDemand]: 92/97 looper letters, 105 selfloop transitions, 5 changer transitions 14/346 dead transitions. [2022-12-06 17:33:53,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 346 transitions, 3849 flow [2022-12-06 17:33:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 17:33:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 17:33:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2022-12-06 17:33:53,070 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8969072164948454 [2022-12-06 17:33:53,070 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 75 predicate places. [2022-12-06 17:33:53,070 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 346 transitions, 3849 flow [2022-12-06 17:33:53,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-12-06 17:33:53,071 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:53,071 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:53,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 17:33:53,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash -443916796, now seen corresponding path program 1 times [2022-12-06 17:33:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:53,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538285368] [2022-12-06 17:33:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-06 17:33:53,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:53,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538285368] [2022-12-06 17:33:53,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538285368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:53,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:53,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 17:33:53,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142824244] [2022-12-06 17:33:53,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:53,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 17:33:53,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:53,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 17:33:53,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 17:33:53,156 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-06 17:33:53,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 346 transitions, 3849 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-12-06 17:33:53,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:53,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-06 17:33:53,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:53,498 INFO L130 PetriNetUnfolder]: 1206/3075 cut-off events. [2022-12-06 17:33:53,499 INFO L131 PetriNetUnfolder]: For 18185/18934 co-relation queries the response was YES. [2022-12-06 17:33:53,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14673 conditions, 3075 events. 1206/3075 cut-off events. For 18185/18934 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 24843 event pairs, 2 based on Foata normal form. 8/2835 useless extension candidates. Maximal degree in co-relation 13389. Up to 1605 conditions per place. [2022-12-06 17:33:53,521 INFO L137 encePairwiseOnDemand]: 92/97 looper letters, 193 selfloop transitions, 6 changer transitions 14/439 dead transitions. [2022-12-06 17:33:53,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 439 transitions, 5773 flow [2022-12-06 17:33:53,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 17:33:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 17:33:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2022-12-06 17:33:53,523 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8969072164948454 [2022-12-06 17:33:53,525 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 78 predicate places. [2022-12-06 17:33:53,525 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 439 transitions, 5773 flow [2022-12-06 17:33:53,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-12-06 17:33:53,525 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:53,525 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:53,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 17:33:53,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:53,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:53,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1755285486, now seen corresponding path program 1 times [2022-12-06 17:33:53,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:53,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404911161] [2022-12-06 17:33:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:53,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:53,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:53,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404911161] [2022-12-06 17:33:53,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404911161] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:33:53,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6316566] [2022-12-06 17:33:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:53,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:33:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:33:53,856 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) [2022-12-06 17:33:53,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 17:33:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:53,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-06 17:33:53,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:33:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:33:54,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:33:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:33:54,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6316566] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:33:54,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:33:54,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 14 [2022-12-06 17:33:54,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602576847] [2022-12-06 17:33:54,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:33:54,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:33:54,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:33:54,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-06 17:33:54,162 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-06 17:33:54,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 439 transitions, 5773 flow. Second operand has 14 states, 14 states have (on average 63.42857142857143) internal successors, (888), 14 states have internal predecessors, (888), 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) [2022-12-06 17:33:54,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:54,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-06 17:33:54,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:55,462 INFO L130 PetriNetUnfolder]: 2940/7549 cut-off events. [2022-12-06 17:33:55,462 INFO L131 PetriNetUnfolder]: For 53220/54337 co-relation queries the response was YES. [2022-12-06 17:33:55,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39579 conditions, 7549 events. 2940/7549 cut-off events. For 53220/54337 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 69145 event pairs, 45 based on Foata normal form. 18/7016 useless extension candidates. Maximal degree in co-relation 36892. Up to 3903 conditions per place. [2022-12-06 17:33:55,537 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 728 selfloop transitions, 179 changer transitions 27/1012 dead transitions. [2022-12-06 17:33:55,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1012 transitions, 16156 flow [2022-12-06 17:33:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 17:33:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 17:33:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1127 transitions. [2022-12-06 17:33:55,541 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6834445118253487 [2022-12-06 17:33:55,542 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 94 predicate places. [2022-12-06 17:33:55,543 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 1012 transitions, 16156 flow [2022-12-06 17:33:55,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 63.42857142857143) internal successors, (888), 14 states have internal predecessors, (888), 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) [2022-12-06 17:33:55,544 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:55,544 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:55,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-06 17:33:55,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-06 17:33:55,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:55,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:55,750 INFO L85 PathProgramCache]: Analyzing trace with hash 733310820, now seen corresponding path program 2 times [2022-12-06 17:33:55,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:55,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560903663] [2022-12-06 17:33:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:55,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:56,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:56,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560903663] [2022-12-06 17:33:56,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560903663] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:33:56,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875271912] [2022-12-06 17:33:56,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:33:56,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:33:56,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:33:56,098 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) [2022-12-06 17:33:56,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 17:33:56,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:33:56,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:33:56,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-06 17:33:56,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:33:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:33:56,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:33:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:33:56,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875271912] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:33:56,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:33:56,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2022-12-06 17:33:56,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073966850] [2022-12-06 17:33:56,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:33:56,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-06 17:33:56,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-06 17:33:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-06 17:33:56,423 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-06 17:33:56,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 1012 transitions, 16156 flow. Second operand has 15 states, 15 states have (on average 63.266666666666666) internal successors, (949), 15 states have internal predecessors, (949), 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) [2022-12-06 17:33:56,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:56,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-06 17:33:56,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:58,927 INFO L130 PetriNetUnfolder]: 4446/11522 cut-off events. [2022-12-06 17:33:58,928 INFO L131 PetriNetUnfolder]: For 101899/103173 co-relation queries the response was YES. [2022-12-06 17:33:58,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67861 conditions, 11522 events. 4446/11522 cut-off events. For 101899/103173 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 114180 event pairs, 87 based on Foata normal form. 14/10643 useless extension candidates. Maximal degree in co-relation 62781. Up to 5928 conditions per place. [2022-12-06 17:33:58,999 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 1164 selfloop transitions, 327 changer transitions 37/1606 dead transitions. [2022-12-06 17:33:59,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 1606 transitions, 29034 flow [2022-12-06 17:33:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-06 17:33:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-06 17:33:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1267 transitions. [2022-12-06 17:33:59,002 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6874660879001627 [2022-12-06 17:33:59,002 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 112 predicate places. [2022-12-06 17:33:59,002 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 1606 transitions, 29034 flow [2022-12-06 17:33:59,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 63.266666666666666) internal successors, (949), 15 states have internal predecessors, (949), 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) [2022-12-06 17:33:59,003 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:59,003 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:59,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-06 17:33:59,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:33:59,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:59,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash -974511956, now seen corresponding path program 3 times [2022-12-06 17:33:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:59,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210687270] [2022-12-06 17:33:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:59,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:33:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:59,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210687270] [2022-12-06 17:33:59,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210687270] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:33:59,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777651985] [2022-12-06 17:33:59,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:33:59,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:33:59,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:33:59,445 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) [2022-12-06 17:33:59,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 17:33:59,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-06 17:33:59,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:33:59,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-06 17:33:59,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:33:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:33:59,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:33:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:33:59,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777651985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:33:59,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:33:59,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-06 17:33:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628388243] [2022-12-06 17:33:59,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:33:59,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-06 17:33:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-06 17:33:59,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-06 17:33:59,832 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-06 17:33:59,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 1606 transitions, 29034 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-06 17:33:59,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:59,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-06 17:33:59,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:03,103 INFO L130 PetriNetUnfolder]: 5891/15478 cut-off events. [2022-12-06 17:34:03,104 INFO L131 PetriNetUnfolder]: For 161214/162970 co-relation queries the response was YES. [2022-12-06 17:34:03,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93944 conditions, 15478 events. 5891/15478 cut-off events. For 161214/162970 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 162790 event pairs, 138 based on Foata normal form. 18/14269 useless extension candidates. Maximal degree in co-relation 88253. Up to 7883 conditions per place. [2022-12-06 17:34:03,302 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 807 selfloop transitions, 221 changer transitions 54/1891 dead transitions. [2022-12-06 17:34:03,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 1891 transitions, 37594 flow [2022-12-06 17:34:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 17:34:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 17:34:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1299 transitions. [2022-12-06 17:34:03,305 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7877501516070345 [2022-12-06 17:34:03,305 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 128 predicate places. [2022-12-06 17:34:03,305 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 1891 transitions, 37594 flow [2022-12-06 17:34:03,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-06 17:34:03,305 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:03,306 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:03,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 17:34:03,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:34:03,511 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:03,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash -810090468, now seen corresponding path program 4 times [2022-12-06 17:34:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:03,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856266689] [2022-12-06 17:34:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:03,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:03,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856266689] [2022-12-06 17:34:03,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856266689] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:34:03,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849882869] [2022-12-06 17:34:03,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:34:03,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:34:03,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:34:03,784 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) [2022-12-06 17:34:03,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 17:34:03,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:34:03,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:34:03,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-06 17:34:03,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:34:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:34:03,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:34:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:34:04,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849882869] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:34:04,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:34:04,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 14 [2022-12-06 17:34:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295410369] [2022-12-06 17:34:04,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:34:04,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:34:04,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:34:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-06 17:34:04,074 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-06 17:34:04,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 1891 transitions, 37594 flow. Second operand has 14 states, 14 states have (on average 63.5) internal successors, (889), 14 states have internal predecessors, (889), 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) [2022-12-06 17:34:04,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:04,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-06 17:34:04,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:09,090 INFO L130 PetriNetUnfolder]: 6147/16105 cut-off events. [2022-12-06 17:34:09,090 INFO L131 PetriNetUnfolder]: For 202814/204323 co-relation queries the response was YES. [2022-12-06 17:34:09,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108632 conditions, 16105 events. 6147/16105 cut-off events. For 202814/204323 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 170482 event pairs, 127 based on Foata normal form. 14/14847 useless extension candidates. Maximal degree in co-relation 87960. Up to 9806 conditions per place. [2022-12-06 17:34:09,345 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 1923 selfloop transitions, 88 changer transitions 63/2152 dead transitions. [2022-12-06 17:34:09,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 2152 transitions, 46187 flow [2022-12-06 17:34:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 17:34:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 17:34:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1124 transitions. [2022-12-06 17:34:09,351 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6816252274105519 [2022-12-06 17:34:09,352 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 144 predicate places. [2022-12-06 17:34:09,352 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 2152 transitions, 46187 flow [2022-12-06 17:34:09,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 63.5) internal successors, (889), 14 states have internal predecessors, (889), 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) [2022-12-06 17:34:09,353 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:09,353 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:09,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 17:34:09,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-06 17:34:09,559 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:09,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:09,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1686803126, now seen corresponding path program 5 times [2022-12-06 17:34:09,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:09,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152724389] [2022-12-06 17:34:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:09,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:09,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:09,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152724389] [2022-12-06 17:34:09,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152724389] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:34:09,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657796459] [2022-12-06 17:34:09,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 17:34:09,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:34:09,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:34:09,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:34:09,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 17:34:09,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 17:34:09,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:34:09,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-06 17:34:09,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:34:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:10,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:34:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:10,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657796459] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:34:10,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:34:10,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-06 17:34:10,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134745164] [2022-12-06 17:34:10,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:34:10,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-06 17:34:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:10,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-06 17:34:10,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-06 17:34:10,119 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-06 17:34:10,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 2152 transitions, 46187 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-06 17:34:10,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:10,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-06 17:34:10,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:17,330 INFO L130 PetriNetUnfolder]: 8166/21441 cut-off events. [2022-12-06 17:34:17,331 INFO L131 PetriNetUnfolder]: For 309345/311638 co-relation queries the response was YES. [2022-12-06 17:34:17,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149038 conditions, 21441 events. 8166/21441 cut-off events. For 309345/311638 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 237531 event pairs, 258 based on Foata normal form. 18/19700 useless extension candidates. Maximal degree in co-relation 139462. Up to 13256 conditions per place. [2022-12-06 17:34:17,568 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 1018 selfloop transitions, 460 changer transitions 90/2558 dead transitions. [2022-12-06 17:34:17,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 2558 transitions, 60056 flow [2022-12-06 17:34:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 17:34:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 17:34:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1301 transitions. [2022-12-06 17:34:17,571 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7889630078835658 [2022-12-06 17:34:17,572 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 160 predicate places. [2022-12-06 17:34:17,572 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 2558 transitions, 60056 flow [2022-12-06 17:34:17,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-06 17:34:17,574 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:17,574 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:17,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 17:34:17,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:34:17,780 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2112484926, now seen corresponding path program 6 times [2022-12-06 17:34:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:17,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996267221] [2022-12-06 17:34:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:17,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:34:18,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:18,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996267221] [2022-12-06 17:34:18,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996267221] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:34:18,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812462322] [2022-12-06 17:34:18,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 17:34:18,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:34:18,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:34:18,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:34:18,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 17:34:18,100 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-06 17:34:18,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:34:18,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-06 17:34:18,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:34:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:34:18,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:34:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:34:18,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812462322] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:34:18,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:34:18,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-06 17:34:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410709306] [2022-12-06 17:34:18,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:34:18,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-06 17:34:18,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:18,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-06 17:34:18,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-06 17:34:18,319 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-06 17:34:18,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 2558 transitions, 60056 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-06 17:34:18,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:18,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-06 17:34:18,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:26,507 INFO L130 PetriNetUnfolder]: 8878/23500 cut-off events. [2022-12-06 17:34:26,507 INFO L131 PetriNetUnfolder]: For 382976/385142 co-relation queries the response was YES. [2022-12-06 17:34:26,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167858 conditions, 23500 events. 8878/23500 cut-off events. For 382976/385142 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 265900 event pairs, 300 based on Foata normal form. 18/21556 useless extension candidates. Maximal degree in co-relation 132367. Up to 14548 conditions per place. [2022-12-06 17:34:26,680 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 1441 selfloop transitions, 200 changer transitions 111/2742 dead transitions. [2022-12-06 17:34:26,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 2742 transitions, 68652 flow [2022-12-06 17:34:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 17:34:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 17:34:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1296 transitions. [2022-12-06 17:34:26,682 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7859308671922377 [2022-12-06 17:34:26,683 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 176 predicate places. [2022-12-06 17:34:26,683 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 2742 transitions, 68652 flow [2022-12-06 17:34:26,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-06 17:34:26,683 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:26,683 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:26,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 17:34:26,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:34:26,891 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:26,891 INFO L85 PathProgramCache]: Analyzing trace with hash 414177600, now seen corresponding path program 1 times [2022-12-06 17:34:26,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:26,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653139650] [2022-12-06 17:34:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-06 17:34:26,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:26,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653139650] [2022-12-06 17:34:26,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653139650] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:26,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:26,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 17:34:26,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162155806] [2022-12-06 17:34:26,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:26,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 17:34:26,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:26,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 17:34:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 17:34:26,993 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-06 17:34:26,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 2742 transitions, 68652 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-12-06 17:34:26,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:26,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-06 17:34:26,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:31,589 INFO L130 PetriNetUnfolder]: 4165/11070 cut-off events. [2022-12-06 17:34:31,589 INFO L131 PetriNetUnfolder]: For 199703/202829 co-relation queries the response was YES. [2022-12-06 17:34:31,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81005 conditions, 11070 events. 4165/11070 cut-off events. For 199703/202829 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 111060 event pairs, 99 based on Foata normal form. 240/10473 useless extension candidates. Maximal degree in co-relation 66121. Up to 6639 conditions per place. [2022-12-06 17:34:31,658 INFO L137 encePairwiseOnDemand]: 92/97 looper letters, 773 selfloop transitions, 7 changer transitions 90/1898 dead transitions. [2022-12-06 17:34:31,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 1898 transitions, 45091 flow [2022-12-06 17:34:31,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 17:34:31,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 17:34:31,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2022-12-06 17:34:31,659 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8891752577319587 [2022-12-06 17:34:31,659 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 179 predicate places. [2022-12-06 17:34:31,659 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 1898 transitions, 45091 flow [2022-12-06 17:34:31,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-12-06 17:34:31,660 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:31,660 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:31,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-06 17:34:31,660 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:31,660 INFO L85 PathProgramCache]: Analyzing trace with hash -809552401, now seen corresponding path program 7 times [2022-12-06 17:34:31,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:31,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359305747] [2022-12-06 17:34:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:31,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:32,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359305747] [2022-12-06 17:34:32,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359305747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:34:32,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069578665] [2022-12-06 17:34:32,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 17:34:32,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:34:32,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:34:32,164 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:34:32,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 17:34:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:32,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-06 17:34:32,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:34:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:34,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:34:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:35,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069578665] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:34:35,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:34:35,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 15] total 39 [2022-12-06 17:34:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106383625] [2022-12-06 17:34:35,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:34:35,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-06 17:34:35,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-06 17:34:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1284, Unknown=0, NotChecked=0, Total=1482 [2022-12-06 17:34:35,785 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-06 17:34:35,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 1898 transitions, 45091 flow. Second operand has 39 states, 39 states have (on average 62.53846153846154) internal successors, (2439), 39 states have internal predecessors, (2439), 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) [2022-12-06 17:34:35,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:35,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-06 17:34:35,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:10,308 INFO L130 PetriNetUnfolder]: 7368/21158 cut-off events. [2022-12-06 17:35:10,308 INFO L131 PetriNetUnfolder]: For 489858/496668 co-relation queries the response was YES. [2022-12-06 17:35:10,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168126 conditions, 21158 events. 7368/21158 cut-off events. For 489858/496668 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 254859 event pairs, 260 based on Foata normal form. 171/19984 useless extension candidates. Maximal degree in co-relation 112878. Up to 12102 conditions per place. [2022-12-06 17:35:10,616 INFO L137 encePairwiseOnDemand]: 78/97 looper letters, 3088 selfloop transitions, 846 changer transitions 167/4201 dead transitions. [2022-12-06 17:35:10,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 4201 transitions, 115924 flow [2022-12-06 17:35:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-06 17:35:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2022-12-06 17:35:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 5264 transitions. [2022-12-06 17:35:10,638 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6618053809404073 [2022-12-06 17:35:10,638 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 260 predicate places. [2022-12-06 17:35:10,638 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 4201 transitions, 115924 flow [2022-12-06 17:35:10,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 62.53846153846154) internal successors, (2439), 39 states have internal predecessors, (2439), 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) [2022-12-06 17:35:10,639 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:10,639 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:10,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-06 17:35:10,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 17:35:10,843 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:35:10,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:10,844 INFO L85 PathProgramCache]: Analyzing trace with hash -327791335, now seen corresponding path program 8 times [2022-12-06 17:35:10,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:10,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134320477] [2022-12-06 17:35:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:10,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:11,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:11,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134320477] [2022-12-06 17:35:11,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134320477] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:35:11,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359540181] [2022-12-06 17:35:11,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:35:11,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:35:11,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:35:11,312 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:35:11,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 17:35:11,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:35:11,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:35:11,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-06 17:35:11,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:35:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:11,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:35:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:12,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359540181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:35:12,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:35:12,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 35 [2022-12-06 17:35:12,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864467509] [2022-12-06 17:35:12,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:35:12,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-06 17:35:12,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:12,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-06 17:35:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2022-12-06 17:35:12,469 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-06 17:35:12,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 4201 transitions, 115924 flow. Second operand has 35 states, 35 states have (on average 62.94285714285714) internal successors, (2203), 35 states have internal predecessors, (2203), 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) [2022-12-06 17:35:12,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:12,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-06 17:35:12,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:36:15,502 INFO L130 PetriNetUnfolder]: 13389/36426 cut-off events. [2022-12-06 17:36:15,503 INFO L131 PetriNetUnfolder]: For 925121/935138 co-relation queries the response was YES. [2022-12-06 17:36:15,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317069 conditions, 36426 events. 13389/36426 cut-off events. For 925121/935138 co-relation queries the response was YES. Maximal size of possible extension queue 1652. Compared 456107 event pairs, 451 based on Foata normal form. 372/35073 useless extension candidates. Maximal degree in co-relation 306162. Up to 21283 conditions per place. [2022-12-06 17:36:15,762 INFO L137 encePairwiseOnDemand]: 74/97 looper letters, 5667 selfloop transitions, 2451 changer transitions 521/8739 dead transitions. [2022-12-06 17:36:15,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 8739 transitions, 241969 flow [2022-12-06 17:36:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-12-06 17:36:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2022-12-06 17:36:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 10166 transitions. [2022-12-06 17:36:15,773 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6633172386793684 [2022-12-06 17:36:15,773 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 401 predicate places. [2022-12-06 17:36:15,773 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 8739 transitions, 241969 flow [2022-12-06 17:36:15,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 62.94285714285714) internal successors, (2203), 35 states have internal predecessors, (2203), 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) [2022-12-06 17:36:15,774 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:36:15,774 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:36:15,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-06 17:36:15,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-06 17:36:15,978 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:36:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:36:15,979 INFO L85 PathProgramCache]: Analyzing trace with hash -681077460, now seen corresponding path program 9 times [2022-12-06 17:36:15,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:36:15,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117114543] [2022-12-06 17:36:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:36:15,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:36:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:36:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:36:16,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:36:16,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117114543] [2022-12-06 17:36:16,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117114543] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:36:16,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616185471] [2022-12-06 17:36:16,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:36:16,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:36:16,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:36:16,404 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:36:16,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-06 17:36:16,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-06 17:36:16,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:36:16,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-06 17:36:16,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:36:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:36:17,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:37:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:31,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616185471] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:37:31,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:37:31,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 19] total 46 [2022-12-06 17:37:31,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145377321] [2022-12-06 17:37:31,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:37:31,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-06 17:37:31,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:31,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-06 17:37:31,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2022-12-06 17:37:31,099 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-06 17:37:31,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 8739 transitions, 241969 flow. Second operand has 46 states, 46 states have (on average 62.17391304347826) internal successors, (2860), 46 states have internal predecessors, (2860), 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) [2022-12-06 17:37:31,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:31,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-06 17:37:31,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:42,609 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 78 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:38:12,683 WARN L233 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 89 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:38:23,277 WARN L233 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 77 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:38:47,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-06 17:39:16,890 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 86 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:39:32,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-06 17:40:00,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-06 17:40:03,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-06 17:42:25,438 INFO L130 PetriNetUnfolder]: 22404/58411 cut-off events. [2022-12-06 17:42:25,438 INFO L131 PetriNetUnfolder]: For 1578560/1593296 co-relation queries the response was YES. [2022-12-06 17:42:25,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554559 conditions, 58411 events. 22404/58411 cut-off events. For 1578560/1593296 co-relation queries the response was YES. Maximal size of possible extension queue 2259. Compared 735960 event pairs, 812 based on Foata normal form. 746/56203 useless extension candidates. Maximal degree in co-relation 447011. Up to 35220 conditions per place. [2022-12-06 17:42:26,008 INFO L137 encePairwiseOnDemand]: 75/97 looper letters, 8926 selfloop transitions, 4862 changer transitions 1223/15111 dead transitions. [2022-12-06 17:42:26,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 15111 transitions, 441844 flow [2022-12-06 17:42:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-12-06 17:42:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2022-12-06 17:42:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 10244 transitions. [2022-12-06 17:42:26,015 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6642028139791221 [2022-12-06 17:42:26,016 INFO L294 CegarLoopForPetriNet]: 86 programPoint places, 559 predicate places. [2022-12-06 17:42:26,016 INFO L495 AbstractCegarLoop]: Abstraction has has 645 places, 15111 transitions, 441844 flow [2022-12-06 17:42:26,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 62.17391304347826) internal successors, (2860), 46 states have internal predecessors, (2860), 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) [2022-12-06 17:42:26,017 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:42:26,017 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:42:26,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-06 17:42:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-06 17:42:26,221 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:42:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:42:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2047380264, now seen corresponding path program 10 times [2022-12-06 17:42:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:42:26,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545804700] [2022-12-06 17:42:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:42:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:42:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:42:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:42:26,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:42:26,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545804700] [2022-12-06 17:42:26,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545804700] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:42:26,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242105583] [2022-12-06 17:42:26,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:42:26,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:42:26,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:42:26,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:42:26,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-06 17:42:27,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:42:27,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:42:27,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-06 17:42:27,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:42:27,751 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 41 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-06 17:42:27,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:42:47,103 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2022-12-06 17:42:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:42:47,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242105583] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:42:47,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:42:47,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 20] total 47 [2022-12-06 17:42:47,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324805880] [2022-12-06 17:42:47,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:42:47,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-06 17:42:47,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:42:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-06 17:42:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1898, Unknown=0, NotChecked=0, Total=2162 [2022-12-06 17:42:47,144 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-06 17:42:47,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 15111 transitions, 441844 flow. Second operand has 47 states, 47 states have (on average 62.255319148936174) internal successors, (2926), 47 states have internal predecessors, (2926), 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) [2022-12-06 17:42:47,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:42:47,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-06 17:42:47,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:43:18,360 WARN L233 SmtUtils]: Spent 22.51s on a formula simplification. DAG size of input: 111 DAG size of output: 100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:45:28,926 WARN L233 SmtUtils]: Spent 13.25s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:45:44,027 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 90 DAG size of output: 85 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:46:13,857 WARN L233 SmtUtils]: Spent 7.48s on a formula simplification that was a NOOP. DAG size: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:46:15,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-06 17:47:06,110 WARN L233 SmtUtils]: Spent 9.57s on a formula simplification that was a NOOP. DAG size: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:47:27,681 WARN L233 SmtUtils]: Spent 14.44s on a formula simplification. DAG size of input: 105 DAG size of output: 100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:47:29,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-06 17:47:43,926 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 87 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-12-06 17:48:11,273 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 17:48:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-12-06 17:48:11,283 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 17:48:11,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-06 17:48:11,289 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 17:48:11,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:48:11,484 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 60/97 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 32341 conditions, 3169 events (1097/3168 cut-off events. For 96108/97215 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 33634 event pairs, 43 based on Foata normal form. 40/3713 useless extension candidates. Maximal degree in co-relation 31837. Up to 1789 conditions per place.). [2022-12-06 17:48:11,485 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 17:48:11,486 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 17:48:11,486 INFO L458 BasicCegarLoop]: Path program histogram: [10, 2, 2, 2, 1, 1, 1] [2022-12-06 17:48:11,494 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 17:48:11,494 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 17:48:11,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:48:11 BasicIcfg [2022-12-06 17:48:11,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 17:48:11,497 INFO L158 Benchmark]: Toolchain (without parser) took 864040.21ms. Allocated memory was 200.3MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 177.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-12-06 17:48:11,498 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 178.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 17:48:11,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.69ms. Allocated memory is still 200.3MB. Free memory was 177.7MB in the beginning and 165.7MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-06 17:48:11,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.08ms. Allocated memory is still 200.3MB. Free memory was 165.7MB in the beginning and 164.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:48:11,498 INFO L158 Benchmark]: Boogie Preprocessor took 26.00ms. Allocated memory is still 200.3MB. Free memory was 164.1MB in the beginning and 162.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 17:48:11,498 INFO L158 Benchmark]: RCFGBuilder took 268.82ms. Allocated memory is still 200.3MB. Free memory was 162.6MB in the beginning and 148.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-06 17:48:11,498 INFO L158 Benchmark]: TraceAbstraction took 863563.89ms. Allocated memory was 200.3MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 147.9MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-12-06 17:48:11,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 178.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 156.69ms. Allocated memory is still 200.3MB. Free memory was 177.7MB in the beginning and 165.7MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.08ms. Allocated memory is still 200.3MB. Free memory was 165.7MB in the beginning and 164.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.00ms. Allocated memory is still 200.3MB. Free memory was 164.1MB in the beginning and 162.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 268.82ms. Allocated memory is still 200.3MB. Free memory was 162.6MB in the beginning and 148.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 863563.89ms. Allocated memory was 200.3MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 147.9MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 60/97 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 32341 conditions, 3169 events (1097/3168 cut-off events. For 96108/97215 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 33634 event pairs, 43 based on Foata normal form. 40/3713 useless extension candidates. Maximal degree in co-relation 31837. Up to 1789 conditions per place.). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 60/97 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 32341 conditions, 3169 events (1097/3168 cut-off events. For 96108/97215 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 33634 event pairs, 43 based on Foata normal form. 40/3713 useless extension candidates. Maximal degree in co-relation 31837. Up to 1789 conditions per place.). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 60/97 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 32341 conditions, 3169 events (1097/3168 cut-off events. For 96108/97215 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 33634 event pairs, 43 based on Foata normal form. 40/3713 useless extension candidates. Maximal degree in co-relation 31837. Up to 1789 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 863.4s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 753.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 6369 SdHoareTripleChecker+Valid, 79.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6369 mSDsluCounter, 3685 SdHoareTripleChecker+Invalid, 76.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3251 mSDsCounter, 693 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13670 IncrementalHoareTripleChecker+Invalid, 14366 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 693 mSolverCounterUnsat, 434 mSDtfsCounter, 13670 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2785 GetRequests, 1935 SyntacticMatches, 16 SemanticMatches, 834 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36740 ImplicationChecksByTransitivity, 491.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=441844occurred in iteration=18, InterpolantAutomatonStates: 593, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 105.6s InterpolantComputationTime, 2674 NumberOfCodeBlocks, 2674 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3662 ConstructedInterpolants, 24 QuantifiedInterpolants, 33828 SizeOfPredicates, 138 NumberOfNonLiveVariables, 2192 ConjunctsInSsa, 231 ConjunctsInUnsatCore, 41 InterpolantComputations, 8 PerfectInterpolantSequences, 229/851 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown