/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/popl20-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 22:00:45,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 22:00:45,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 22:00:45,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 22:00:45,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 22:00:45,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 22:00:45,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 22:00:45,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 22:00:45,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 22:00:45,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 22:00:45,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 22:00:45,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 22:00:45,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 22:00:45,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 22:00:45,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 22:00:45,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 22:00:45,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 22:00:45,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 22:00:45,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 22:00:45,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 22:00:45,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 22:00:45,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 22:00:45,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 22:00:45,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 22:00:45,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 22:00:45,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 22:00:45,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 22:00:45,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 22:00:45,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 22:00:45,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 22:00:45,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 22:00:45,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 22:00:45,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 22:00:45,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 22:00:45,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 22:00:45,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 22:00:45,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 22:00:45,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 22:00:45,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 22:00:45,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 22:00:45,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 22:00:45,938 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 [2022-12-11 22:00:45,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 22:00:45,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 22:00:45,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 22:00:45,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 22:00:45,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 22:00:45,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 22:00:45,965 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 22:00:45,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 22:00:45,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 22:00:45,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 22:00:45,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 22:00:45,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 22:00:45,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 22:00:45,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 22:00:45,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 22:00:45,966 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 22:00:45,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 22:00:45,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 22:00:45,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 22:00:45,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 22:00:45,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 22:00:45,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 22:00:45,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 22:00:46,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 22:00:46,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 22:00:46,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 22:00:46,223 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 22:00:46,223 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 22:00:46,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-12-11 22:00:47,178 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 22:00:47,373 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 22:00:47,373 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-12-11 22:00:47,386 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc55e7fb3/4da4a79f2983438ab87e7951f565a4a5/FLAGaa5548245 [2022-12-11 22:00:47,398 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc55e7fb3/4da4a79f2983438ab87e7951f565a4a5 [2022-12-11 22:00:47,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 22:00:47,401 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 22:00:47,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 22:00:47,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 22:00:47,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 22:00:47,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64941e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47, skipping insertion in model container [2022-12-11 22:00:47,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 22:00:47,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 22:00:47,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,568 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,568 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,568 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,568 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,586 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/popl20-channel-sum.wvr.c[2947,2960] [2022-12-11 22:00:47,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 22:00:47,601 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 22:00:47,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,617 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,623 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,623 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:00:47,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:00:47,635 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/popl20-channel-sum.wvr.c[2947,2960] [2022-12-11 22:00:47,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 22:00:47,654 INFO L208 MainTranslator]: Completed translation [2022-12-11 22:00:47,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47 WrapperNode [2022-12-11 22:00:47,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 22:00:47,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 22:00:47,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 22:00:47,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 22:00:47,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,699 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 151 [2022-12-11 22:00:47,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 22:00:47,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 22:00:47,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 22:00:47,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 22:00:47,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 22:00:47,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 22:00:47,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 22:00:47,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 22:00:47,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (1/1) ... [2022-12-11 22:00:47,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 22:00:47,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:47,761 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) [2022-12-11 22:00:47,808 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 [2022-12-11 22:00:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 22:00:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 22:00:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 22:00:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 22:00:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 22:00:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 22:00:47,830 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 22:00:47,908 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 22:00:47,909 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 22:00:48,129 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 22:00:48,173 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 22:00:48,173 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-11 22:00:48,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 10:00:48 BoogieIcfgContainer [2022-12-11 22:00:48,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 22:00:48,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 22:00:48,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 22:00:48,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 22:00:48,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 10:00:47" (1/3) ... [2022-12-11 22:00:48,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454388a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 10:00:48, skipping insertion in model container [2022-12-11 22:00:48,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:00:47" (2/3) ... [2022-12-11 22:00:48,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454388a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 10:00:48, skipping insertion in model container [2022-12-11 22:00:48,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 10:00:48" (3/3) ... [2022-12-11 22:00:48,183 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2022-12-11 22:00:48,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 22:00:48,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 22:00:48,203 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 22:00:48,292 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 22:00:48,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 131 transitions, 278 flow [2022-12-11 22:00:48,398 INFO L130 PetriNetUnfolder]: 11/129 cut-off events. [2022-12-11 22:00:48,399 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 22:00:48,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 11/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-12-11 22:00:48,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 131 transitions, 278 flow [2022-12-11 22:00:48,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 121 transitions, 254 flow [2022-12-11 22:00:48,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 22:00:48,418 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;@55581fd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 22:00:48,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 22:00:48,439 INFO L130 PetriNetUnfolder]: 11/120 cut-off events. [2022-12-11 22:00:48,439 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 22:00:48,440 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:48,440 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:48,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:00:48,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1903356989, now seen corresponding path program 1 times [2022-12-11 22:00:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:48,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474943967] [2022-12-11 22:00:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:48,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474943967] [2022-12-11 22:00:48,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474943967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:48,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:48,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 22:00:48,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824205302] [2022-12-11 22:00:48,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:48,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-11 22:00:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-11 22:00:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-11 22:00:48,676 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 131 [2022-12-11 22:00:48,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 121 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 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) [2022-12-11 22:00:48,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:48,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 131 [2022-12-11 22:00:48,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:48,732 INFO L130 PetriNetUnfolder]: 11/138 cut-off events. [2022-12-11 22:00:48,732 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-11 22:00:48,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 138 events. 11/138 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 4 based on Foata normal form. 19/148 useless extension candidates. Maximal degree in co-relation 86. Up to 21 conditions per place. [2022-12-11 22:00:48,734 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 9 selfloop transitions, 0 changer transitions 3/114 dead transitions. [2022-12-11 22:00:48,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 258 flow [2022-12-11 22:00:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-11 22:00:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-11 22:00:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 244 transitions. [2022-12-11 22:00:48,748 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9312977099236641 [2022-12-11 22:00:48,751 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 1 predicate places. [2022-12-11 22:00:48,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 114 transitions, 258 flow [2022-12-11 22:00:48,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 111 transitions, 252 flow [2022-12-11 22:00:48,755 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 252 flow [2022-12-11 22:00:48,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 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) [2022-12-11 22:00:48,756 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:48,757 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:48,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 22:00:48,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:00:48,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1276074944, now seen corresponding path program 1 times [2022-12-11 22:00:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:48,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798959951] [2022-12-11 22:00:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:48,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:49,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:49,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798959951] [2022-12-11 22:00:49,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798959951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:49,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:49,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 22:00:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174694961] [2022-12-11 22:00:49,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:49,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 22:00:49,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 22:00:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 22:00:49,120 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 131 [2022-12-11 22:00:49,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 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) [2022-12-11 22:00:49,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:49,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 131 [2022-12-11 22:00:49,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:49,238 INFO L130 PetriNetUnfolder]: 27/278 cut-off events. [2022-12-11 22:00:49,238 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-12-11 22:00:49,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 278 events. 27/278 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 997 event pairs, 4 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 263. Up to 38 conditions per place. [2022-12-11 22:00:49,243 INFO L137 encePairwiseOnDemand]: 126/131 looper letters, 29 selfloop transitions, 2 changer transitions 4/123 dead transitions. [2022-12-11 22:00:49,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 371 flow [2022-12-11 22:00:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 22:00:49,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 22:00:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2022-12-11 22:00:49,251 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7954198473282442 [2022-12-11 22:00:49,251 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 2 predicate places. [2022-12-11 22:00:49,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 123 transitions, 371 flow [2022-12-11 22:00:49,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 119 transitions, 350 flow [2022-12-11 22:00:49,254 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 350 flow [2022-12-11 22:00:49,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 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) [2022-12-11 22:00:49,254 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:49,255 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:49,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 22:00:49,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:00:49,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1186161427, now seen corresponding path program 1 times [2022-12-11 22:00:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:49,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645507600] [2022-12-11 22:00:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:49,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:49,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:49,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645507600] [2022-12-11 22:00:49,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645507600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:49,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:49,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 22:00:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815707567] [2022-12-11 22:00:49,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 22:00:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 22:00:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 22:00:49,511 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 131 [2022-12-11 22:00:49,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-12-11 22:00:49,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:49,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 131 [2022-12-11 22:00:49,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:49,621 INFO L130 PetriNetUnfolder]: 110/415 cut-off events. [2022-12-11 22:00:49,621 INFO L131 PetriNetUnfolder]: For 403/407 co-relation queries the response was YES. [2022-12-11 22:00:49,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 415 events. 110/415 cut-off events. For 403/407 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1547 event pairs, 15 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 788. Up to 167 conditions per place. [2022-12-11 22:00:49,624 INFO L137 encePairwiseOnDemand]: 126/131 looper letters, 32 selfloop transitions, 6 changer transitions 3/132 dead transitions. [2022-12-11 22:00:49,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 132 transitions, 505 flow [2022-12-11 22:00:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 22:00:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 22:00:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2022-12-11 22:00:49,626 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8473282442748091 [2022-12-11 22:00:49,627 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 3 predicate places. [2022-12-11 22:00:49,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 132 transitions, 505 flow [2022-12-11 22:00:49,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 129 transitions, 479 flow [2022-12-11 22:00:49,631 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 129 transitions, 479 flow [2022-12-11 22:00:49,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-12-11 22:00:49,631 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:49,632 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:49,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 22:00:49,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:00:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash 236082458, now seen corresponding path program 1 times [2022-12-11 22:00:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:49,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168363919] [2022-12-11 22:00:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:49,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:49,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168363919] [2022-12-11 22:00:49,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168363919] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:00:49,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635087836] [2022-12-11 22:00:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:49,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:49,836 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) [2022-12-11 22:00:49,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 22:00:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:49,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-11 22:00:49,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:00:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:50,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:00:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:50,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635087836] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:00:50,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:00:50,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 8 [2022-12-11 22:00:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794596063] [2022-12-11 22:00:50,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:00:50,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 22:00:50,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:50,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 22:00:50,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-11 22:00:50,246 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 131 [2022-12-11 22:00:50,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 129 transitions, 479 flow. Second operand has 8 states, 8 states have (on average 105.25) internal successors, (842), 8 states have internal predecessors, (842), 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) [2022-12-11 22:00:50,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:50,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 131 [2022-12-11 22:00:50,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:50,355 INFO L130 PetriNetUnfolder]: 105/410 cut-off events. [2022-12-11 22:00:50,355 INFO L131 PetriNetUnfolder]: For 485/501 co-relation queries the response was YES. [2022-12-11 22:00:50,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 410 events. 105/410 cut-off events. For 485/501 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1459 event pairs, 6 based on Foata normal form. 2/383 useless extension candidates. Maximal degree in co-relation 906. Up to 177 conditions per place. [2022-12-11 22:00:50,359 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 40 selfloop transitions, 6 changer transitions 19/156 dead transitions. [2022-12-11 22:00:50,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 156 transitions, 817 flow [2022-12-11 22:00:50,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 22:00:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 22:00:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 766 transitions. [2022-12-11 22:00:50,361 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8353326063249727 [2022-12-11 22:00:50,362 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 9 predicate places. [2022-12-11 22:00:50,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 156 transitions, 817 flow [2022-12-11 22:00:50,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 137 transitions, 636 flow [2022-12-11 22:00:50,367 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 137 transitions, 636 flow [2022-12-11 22:00:50,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.25) internal successors, (842), 8 states have internal predecessors, (842), 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) [2022-12-11 22:00:50,371 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:50,371 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:50,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 22:00:50,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:50,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:00:50,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1330008338, now seen corresponding path program 2 times [2022-12-11 22:00:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:50,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669912706] [2022-12-11 22:00:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:50,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:50,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669912706] [2022-12-11 22:00:50,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669912706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:00:50,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:00:50,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 22:00:50,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477203637] [2022-12-11 22:00:50,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:00:50,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 22:00:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:50,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 22:00:50,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 22:00:50,806 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 131 [2022-12-11 22:00:50,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 137 transitions, 636 flow. Second operand has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 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) [2022-12-11 22:00:50,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:50,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 131 [2022-12-11 22:00:50,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:51,115 INFO L130 PetriNetUnfolder]: 156/491 cut-off events. [2022-12-11 22:00:51,115 INFO L131 PetriNetUnfolder]: For 1284/1308 co-relation queries the response was YES. [2022-12-11 22:00:51,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 491 events. 156/491 cut-off events. For 1284/1308 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1768 event pairs, 6 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 1143. Up to 240 conditions per place. [2022-12-11 22:00:51,117 INFO L137 encePairwiseOnDemand]: 119/131 looper letters, 71 selfloop transitions, 6 changer transitions 45/197 dead transitions. [2022-12-11 22:00:51,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 197 transitions, 1366 flow [2022-12-11 22:00:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-11 22:00:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-11 22:00:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1121 transitions. [2022-12-11 22:00:51,120 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7131043256997456 [2022-12-11 22:00:51,121 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 17 predicate places. [2022-12-11 22:00:51,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 197 transitions, 1366 flow [2022-12-11 22:00:51,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 152 transitions, 876 flow [2022-12-11 22:00:51,123 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 876 flow [2022-12-11 22:00:51,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 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) [2022-12-11 22:00:51,124 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:00:51,124 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:00:51,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 22:00:51,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:00:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash 407195731, now seen corresponding path program 1 times [2022-12-11 22:00:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:51,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452170497] [2022-12-11 22:00:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:51,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:00:51,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:51,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452170497] [2022-12-11 22:00:51,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452170497] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:00:51,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81350044] [2022-12-11 22:00:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:51,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:51,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:51,436 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) [2022-12-11 22:00:51,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 22:00:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:51,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-11 22:00:51,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:00:51,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-11 22:00:52,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 22:00:52,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 22:00:52,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-11 22:00:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:52,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:00:53,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:00:53,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2022-12-11 22:00:53,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:00:53,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 149 [2022-12-11 22:00:53,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:00:53,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 137 [2022-12-11 22:00:53,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:00:53,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 113 [2022-12-11 22:00:53,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:00:53,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2022-12-11 22:00:53,923 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-11 22:00:53,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 325 treesize of output 297 [2022-12-11 22:00:53,939 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-11 22:00:53,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 293 treesize of output 249 [2022-12-11 22:00:53,953 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-11 22:00:53,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 225 [2022-12-11 22:00:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:00:54,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81350044] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:00:54,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:00:54,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 25] total 52 [2022-12-11 22:00:54,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398278746] [2022-12-11 22:00:54,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:00:54,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-11 22:00:54,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:54,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-11 22:00:54,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=2161, Unknown=26, NotChecked=0, Total=2652 [2022-12-11 22:00:54,452 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 131 [2022-12-11 22:00:54,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 152 transitions, 876 flow. Second operand has 52 states, 52 states have (on average 48.26923076923077) internal successors, (2510), 52 states have internal predecessors, (2510), 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) [2022-12-11 22:00:54,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:54,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 131 [2022-12-11 22:00:54,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:01:10,519 INFO L130 PetriNetUnfolder]: 1004/2185 cut-off events. [2022-12-11 22:01:10,519 INFO L131 PetriNetUnfolder]: For 6608/6706 co-relation queries the response was YES. [2022-12-11 22:01:10,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8734 conditions, 2185 events. 1004/2185 cut-off events. For 6608/6706 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 14082 event pairs, 70 based on Foata normal form. 11/2090 useless extension candidates. Maximal degree in co-relation 6983. Up to 1066 conditions per place. [2022-12-11 22:01:10,548 INFO L137 encePairwiseOnDemand]: 94/131 looper letters, 248 selfloop transitions, 119 changer transitions 8/415 dead transitions. [2022-12-11 22:01:10,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 415 transitions, 3660 flow [2022-12-11 22:01:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-11 22:01:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-11 22:01:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3035 transitions. [2022-12-11 22:01:10,555 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3861323155216285 [2022-12-11 22:01:10,560 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 69 predicate places. [2022-12-11 22:01:10,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 415 transitions, 3660 flow [2022-12-11 22:01:10,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 407 transitions, 3583 flow [2022-12-11 22:01:10,586 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 407 transitions, 3583 flow [2022-12-11 22:01:10,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 48.26923076923077) internal successors, (2510), 52 states have internal predecessors, (2510), 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) [2022-12-11 22:01:10,587 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:01:10,587 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:01:10,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 22:01:10,793 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,SelfDestructingSolverStorable5 [2022-12-11 22:01:10,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:01:10,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:01:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash 242448330, now seen corresponding path program 1 times [2022-12-11 22:01:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:01:10,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444762224] [2022-12-11 22:01:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:10,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:01:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:01:10,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:01:10,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444762224] [2022-12-11 22:01:10,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444762224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:01:10,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:01:10,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 22:01:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203677304] [2022-12-11 22:01:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:01:10,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 22:01:10,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 22:01:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 22:01:10,868 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 131 [2022-12-11 22:01:10,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 407 transitions, 3583 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2022-12-11 22:01:10,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:10,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 131 [2022-12-11 22:01:10,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:01:11,098 INFO L130 PetriNetUnfolder]: 930/2121 cut-off events. [2022-12-11 22:01:11,099 INFO L131 PetriNetUnfolder]: For 12990/13571 co-relation queries the response was YES. [2022-12-11 22:01:11,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8936 conditions, 2121 events. 930/2121 cut-off events. For 12990/13571 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 12935 event pairs, 44 based on Foata normal form. 90/2101 useless extension candidates. Maximal degree in co-relation 6688. Up to 989 conditions per place. [2022-12-11 22:01:11,111 INFO L137 encePairwiseOnDemand]: 128/131 looper letters, 138 selfloop transitions, 2 changer transitions 0/366 dead transitions. [2022-12-11 22:01:11,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 366 transitions, 3432 flow [2022-12-11 22:01:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 22:01:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 22:01:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-12-11 22:01:11,113 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8905852417302799 [2022-12-11 22:01:11,114 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 68 predicate places. [2022-12-11 22:01:11,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 366 transitions, 3432 flow [2022-12-11 22:01:11,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 366 transitions, 3432 flow [2022-12-11 22:01:11,130 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 366 transitions, 3432 flow [2022-12-11 22:01:11,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2022-12-11 22:01:11,131 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:01:11,131 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:01:11,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 22:01:11,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:01:11,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:01:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash 848419098, now seen corresponding path program 2 times [2022-12-11 22:01:11,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:01:11,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655314871] [2022-12-11 22:01:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:11,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:01:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:01:11,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:01:11,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655314871] [2022-12-11 22:01:11,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655314871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:01:11,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:01:11,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 22:01:11,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079746535] [2022-12-11 22:01:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:01:11,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 22:01:11,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:11,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 22:01:11,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-11 22:01:11,288 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2022-12-11 22:01:11,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 366 transitions, 3432 flow. Second operand has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 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) [2022-12-11 22:01:11,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:11,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2022-12-11 22:01:11,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:01:11,749 INFO L130 PetriNetUnfolder]: 1876/4038 cut-off events. [2022-12-11 22:01:11,749 INFO L131 PetriNetUnfolder]: For 34549/35656 co-relation queries the response was YES. [2022-12-11 22:01:11,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19783 conditions, 4038 events. 1876/4038 cut-off events. For 34549/35656 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 26862 event pairs, 53 based on Foata normal form. 2/3816 useless extension candidates. Maximal degree in co-relation 15305. Up to 1979 conditions per place. [2022-12-11 22:01:11,776 INFO L137 encePairwiseOnDemand]: 123/131 looper letters, 305 selfloop transitions, 118 changer transitions 0/608 dead transitions. [2022-12-11 22:01:11,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 608 transitions, 7903 flow [2022-12-11 22:01:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 22:01:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 22:01:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 771 transitions. [2022-12-11 22:01:11,779 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8407851690294439 [2022-12-11 22:01:11,780 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 74 predicate places. [2022-12-11 22:01:11,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 608 transitions, 7903 flow [2022-12-11 22:01:11,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 608 transitions, 7903 flow [2022-12-11 22:01:11,798 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 608 transitions, 7903 flow [2022-12-11 22:01:11,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 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) [2022-12-11 22:01:11,798 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:01:11,798 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:01:11,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 22:01:11,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:01:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:01:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1886633597, now seen corresponding path program 3 times [2022-12-11 22:01:11,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:01:11,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029046372] [2022-12-11 22:01:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:11,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:01:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-11 22:01:11,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:01:11,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029046372] [2022-12-11 22:01:11,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029046372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:01:11,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:01:11,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 22:01:11,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358463775] [2022-12-11 22:01:11,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:01:11,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 22:01:11,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:11,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 22:01:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 22:01:11,930 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 131 [2022-12-11 22:01:11,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 608 transitions, 7903 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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) [2022-12-11 22:01:11,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:11,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 131 [2022-12-11 22:01:11,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:01:12,474 INFO L130 PetriNetUnfolder]: 1878/4731 cut-off events. [2022-12-11 22:01:12,474 INFO L131 PetriNetUnfolder]: For 39680/41512 co-relation queries the response was YES. [2022-12-11 22:01:12,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22305 conditions, 4731 events. 1878/4731 cut-off events. For 39680/41512 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 34939 event pairs, 156 based on Foata normal form. 216/4705 useless extension candidates. Maximal degree in co-relation 17351. Up to 1999 conditions per place. [2022-12-11 22:01:12,503 INFO L137 encePairwiseOnDemand]: 127/131 looper letters, 314 selfloop transitions, 4 changer transitions 0/578 dead transitions. [2022-12-11 22:01:12,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 578 transitions, 8033 flow [2022-12-11 22:01:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 22:01:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 22:01:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2022-12-11 22:01:12,504 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8759541984732825 [2022-12-11 22:01:12,504 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 77 predicate places. [2022-12-11 22:01:12,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 578 transitions, 8033 flow [2022-12-11 22:01:12,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 578 transitions, 8033 flow [2022-12-11 22:01:12,527 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 578 transitions, 8033 flow [2022-12-11 22:01:12,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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) [2022-12-11 22:01:12,527 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:01:12,527 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:01:12,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 22:01:12,528 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:01:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:01:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -62292314, now seen corresponding path program 1 times [2022-12-11 22:01:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:01:12,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594808533] [2022-12-11 22:01:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:12,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:01:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-11 22:01:12,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:01:12,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594808533] [2022-12-11 22:01:12,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594808533] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:01:12,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285715894] [2022-12-11 22:01:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:12,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:01:12,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:01:12,876 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) [2022-12-11 22:01:12,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 22:01:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:13,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-11 22:01:13,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:01:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:01:13,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:01:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:01:14,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285715894] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:01:14,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:01:14,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 15] total 39 [2022-12-11 22:01:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279116307] [2022-12-11 22:01:14,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:01:14,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-11 22:01:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-11 22:01:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1270, Unknown=0, NotChecked=0, Total=1482 [2022-12-11 22:01:14,030 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 131 [2022-12-11 22:01:14,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 578 transitions, 8033 flow. Second operand has 39 states, 39 states have (on average 86.92307692307692) internal successors, (3390), 39 states have internal predecessors, (3390), 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) [2022-12-11 22:01:14,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:14,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 131 [2022-12-11 22:01:14,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:01:15,593 INFO L130 PetriNetUnfolder]: 1799/4600 cut-off events. [2022-12-11 22:01:15,594 INFO L131 PetriNetUnfolder]: For 45909/47841 co-relation queries the response was YES. [2022-12-11 22:01:15,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23781 conditions, 4600 events. 1799/4600 cut-off events. For 45909/47841 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 33452 event pairs, 175 based on Foata normal form. 204/4558 useless extension candidates. Maximal degree in co-relation 19223. Up to 1945 conditions per place. [2022-12-11 22:01:15,655 INFO L137 encePairwiseOnDemand]: 111/131 looper letters, 296 selfloop transitions, 16 changer transitions 126/541 dead transitions. [2022-12-11 22:01:15,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 541 transitions, 8461 flow [2022-12-11 22:01:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-11 22:01:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-11 22:01:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2205 transitions. [2022-12-11 22:01:15,661 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6732824427480916 [2022-12-11 22:01:15,661 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 86 predicate places. [2022-12-11 22:01:15,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 541 transitions, 8461 flow [2022-12-11 22:01:15,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 415 transitions, 6311 flow [2022-12-11 22:01:15,678 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 415 transitions, 6311 flow [2022-12-11 22:01:15,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 86.92307692307692) internal successors, (3390), 39 states have internal predecessors, (3390), 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) [2022-12-11 22:01:15,681 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:01:15,681 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:01:15,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 22:01:15,887 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 [2022-12-11 22:01:15,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:01:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:01:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1688132365, now seen corresponding path program 2 times [2022-12-11 22:01:15,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:01:15,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756927566] [2022-12-11 22:01:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:15,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:01:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 22:01:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:01:16,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756927566] [2022-12-11 22:01:16,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756927566] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:01:16,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798406832] [2022-12-11 22:01:16,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 22:01:16,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:01:16,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:01:16,098 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) [2022-12-11 22:01:16,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 22:01:16,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 22:01:16,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:01:16,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-11 22:01:16,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:01:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 22:01:16,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:01:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 22:01:16,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798406832] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:01:16,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:01:16,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 14 [2022-12-11 22:01:16,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159733122] [2022-12-11 22:01:16,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:01:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 22:01:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:16,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 22:01:16,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-12-11 22:01:16,515 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 131 [2022-12-11 22:01:16,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 415 transitions, 6311 flow. Second operand has 14 states, 14 states have (on average 100.71428571428571) internal successors, (1410), 14 states have internal predecessors, (1410), 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) [2022-12-11 22:01:16,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:16,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 131 [2022-12-11 22:01:16,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:01:18,070 INFO L130 PetriNetUnfolder]: 3078/7565 cut-off events. [2022-12-11 22:01:18,070 INFO L131 PetriNetUnfolder]: For 61312/61863 co-relation queries the response was YES. [2022-12-11 22:01:18,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39624 conditions, 7565 events. 3078/7565 cut-off events. For 61312/61863 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 58056 event pairs, 338 based on Foata normal form. 49/7196 useless extension candidates. Maximal degree in co-relation 39013. Up to 2934 conditions per place. [2022-12-11 22:01:18,122 INFO L137 encePairwiseOnDemand]: 118/131 looper letters, 356 selfloop transitions, 157 changer transitions 32/675 dead transitions. [2022-12-11 22:01:18,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 675 transitions, 11451 flow [2022-12-11 22:01:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 22:01:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 22:01:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2943 transitions. [2022-12-11 22:01:18,130 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8023446019629226 [2022-12-11 22:01:18,131 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 88 predicate places. [2022-12-11 22:01:18,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 675 transitions, 11451 flow [2022-12-11 22:01:18,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 643 transitions, 10723 flow [2022-12-11 22:01:18,167 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 643 transitions, 10723 flow [2022-12-11 22:01:18,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 100.71428571428571) internal successors, (1410), 14 states have internal predecessors, (1410), 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) [2022-12-11 22:01:18,168 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:01:18,168 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:01:18,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 22:01:18,375 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 [2022-12-11 22:01:18,375 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:01:18,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:01:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1951340395, now seen corresponding path program 3 times [2022-12-11 22:01:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:01:18,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429002555] [2022-12-11 22:01:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:01:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 22:01:19,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:01:19,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429002555] [2022-12-11 22:01:19,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429002555] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:01:19,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314267121] [2022-12-11 22:01:19,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 22:01:19,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:01:19,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:01:19,218 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) [2022-12-11 22:01:19,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 22:01:19,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-11 22:01:19,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:01:19,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-11 22:01:19,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:01:20,146 INFO L321 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2022-12-11 22:01:20,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 18 [2022-12-11 22:01:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 22:01:20,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:01:20,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:01:20,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 76 [2022-12-11 22:01:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 22:01:20,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314267121] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:01:20,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:01:20,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 16] total 40 [2022-12-11 22:01:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750830073] [2022-12-11 22:01:20,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:01:20,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-11 22:01:20,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-11 22:01:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-12-11 22:01:20,976 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 131 [2022-12-11 22:01:20,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 643 transitions, 10723 flow. Second operand has 40 states, 40 states have (on average 67.7) internal successors, (2708), 40 states have internal predecessors, (2708), 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) [2022-12-11 22:01:20,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:20,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 131 [2022-12-11 22:01:20,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:01:25,358 INFO L130 PetriNetUnfolder]: 5816/13287 cut-off events. [2022-12-11 22:01:25,359 INFO L131 PetriNetUnfolder]: For 126981/127943 co-relation queries the response was YES. [2022-12-11 22:01:25,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80672 conditions, 13287 events. 5816/13287 cut-off events. For 126981/127943 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 113423 event pairs, 469 based on Foata normal form. 153/12786 useless extension candidates. Maximal degree in co-relation 79737. Up to 5410 conditions per place. [2022-12-11 22:01:25,466 INFO L137 encePairwiseOnDemand]: 109/131 looper letters, 858 selfloop transitions, 266 changer transitions 68/1332 dead transitions. [2022-12-11 22:01:25,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1332 transitions, 25792 flow [2022-12-11 22:01:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-11 22:01:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-11 22:01:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3798 transitions. [2022-12-11 22:01:25,470 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5368956743002544 [2022-12-11 22:01:25,471 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 141 predicate places. [2022-12-11 22:01:25,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 1332 transitions, 25792 flow [2022-12-11 22:01:25,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 1264 transitions, 24063 flow [2022-12-11 22:01:25,584 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 1264 transitions, 24063 flow [2022-12-11 22:01:25,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 67.7) internal successors, (2708), 40 states have internal predecessors, (2708), 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) [2022-12-11 22:01:25,585 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:01:25,585 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:01:25,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 22:01:25,791 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 [2022-12-11 22:01:25,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:01:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:01:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash -642637901, now seen corresponding path program 4 times [2022-12-11 22:01:25,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:01:25,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938589394] [2022-12-11 22:01:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:01:25,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:01:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:01:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 22:01:26,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:01:26,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938589394] [2022-12-11 22:01:26,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938589394] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:01:26,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077297391] [2022-12-11 22:01:26,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 22:01:26,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:01:26,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:01:26,322 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) [2022-12-11 22:01:26,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 22:01:26,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 22:01:26,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:01:26,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-11 22:01:26,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:01:27,760 INFO L321 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2022-12-11 22:01:27,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 21 [2022-12-11 22:01:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:01:27,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:01:28,511 INFO L321 Elim1Store]: treesize reduction 12, result has 81.5 percent of original size [2022-12-11 22:01:28,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 76 [2022-12-11 22:01:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:01:30,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077297391] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:01:30,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:01:30,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28, 28] total 64 [2022-12-11 22:01:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200430690] [2022-12-11 22:01:30,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:01:30,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-11 22:01:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:01:30,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-11 22:01:30,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2022-12-11 22:01:30,004 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 131 [2022-12-11 22:01:30,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 1264 transitions, 24063 flow. Second operand has 64 states, 64 states have (on average 61.21875) internal successors, (3918), 64 states have internal predecessors, (3918), 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) [2022-12-11 22:01:30,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:01:30,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 131 [2022-12-11 22:01:30,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:02:28,942 INFO L130 PetriNetUnfolder]: 30151/68291 cut-off events. [2022-12-11 22:02:28,942 INFO L131 PetriNetUnfolder]: For 741773/749749 co-relation queries the response was YES. [2022-12-11 22:02:29,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456655 conditions, 68291 events. 30151/68291 cut-off events. For 741773/749749 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 769276 event pairs, 1849 based on Foata normal form. 463/65048 useless extension candidates. Maximal degree in co-relation 373355. Up to 29061 conditions per place. [2022-12-11 22:02:29,450 INFO L137 encePairwiseOnDemand]: 101/131 looper letters, 4610 selfloop transitions, 3454 changer transitions 392/8579 dead transitions. [2022-12-11 22:02:29,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 8579 transitions, 174899 flow [2022-12-11 22:02:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 414 states. [2022-12-11 22:02:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2022-12-11 22:02:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 26311 transitions. [2022-12-11 22:02:29,644 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.48513847401998744 [2022-12-11 22:02:29,644 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 552 predicate places. [2022-12-11 22:02:29,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 669 places, 8579 transitions, 174899 flow [2022-12-11 22:02:30,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 653 places, 8187 transitions, 164516 flow [2022-12-11 22:02:30,028 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 8187 transitions, 164516 flow [2022-12-11 22:02:30,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 61.21875) internal successors, (3918), 64 states have internal predecessors, (3918), 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) [2022-12-11 22:02:30,029 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:02:30,030 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:02:30,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 22:02:30,234 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 [2022-12-11 22:02:30,235 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:02:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:02:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash -779985583, now seen corresponding path program 5 times [2022-12-11 22:02:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:02:30,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902829095] [2022-12-11 22:02:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:02:30,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:02:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:02:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 22:02:30,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:02:30,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902829095] [2022-12-11 22:02:30,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902829095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:02:30,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092012121] [2022-12-11 22:02:30,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 22:02:30,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:02:30,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:02:30,786 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) [2022-12-11 22:02:30,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 22:02:30,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-11 22:02:30,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:02:30,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-11 22:02:30,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:02:32,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 22:02:32,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 22:02:32,377 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:02:32,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 21 [2022-12-11 22:02:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:02:32,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:02:33,164 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:02:33,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-12-11 22:02:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:02:34,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092012121] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:02:34,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:02:34,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 34, 28] total 71 [2022-12-11 22:02:34,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851021271] [2022-12-11 22:02:34,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:02:34,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-12-11 22:02:34,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:02:34,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-12-11 22:02:34,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=578, Invalid=4392, Unknown=0, NotChecked=0, Total=4970 [2022-12-11 22:02:34,080 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 131 [2022-12-11 22:02:34,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 8187 transitions, 164516 flow. Second operand has 71 states, 71 states have (on average 54.183098591549296) internal successors, (3847), 71 states have internal predecessors, (3847), 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) [2022-12-11 22:02:34,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:02:34,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 131 [2022-12-11 22:02:34,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:05:29,813 INFO L130 PetriNetUnfolder]: 51213/114996 cut-off events. [2022-12-11 22:05:29,813 INFO L131 PetriNetUnfolder]: For 1379196/1393989 co-relation queries the response was YES. [2022-12-11 22:05:30,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849645 conditions, 114996 events. 51213/114996 cut-off events. For 1379196/1393989 co-relation queries the response was YES. Maximal size of possible extension queue 2867. Compared 1396881 event pairs, 2499 based on Foata normal form. 661/109759 useless extension candidates. Maximal degree in co-relation 729124. Up to 49961 conditions per place. [2022-12-11 22:05:30,749 INFO L137 encePairwiseOnDemand]: 95/131 looper letters, 9226 selfloop transitions, 7576 changer transitions 165/17083 dead transitions. [2022-12-11 22:05:30,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1073 places, 17083 transitions, 363959 flow [2022-12-11 22:05:30,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 421 states. [2022-12-11 22:05:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2022-12-11 22:05:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 23576 transitions. [2022-12-11 22:05:30,766 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42748091603053434 [2022-12-11 22:05:30,766 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 956 predicate places. [2022-12-11 22:05:30,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 1073 places, 17083 transitions, 363959 flow [2022-12-11 22:05:31,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1067 places, 16918 transitions, 359519 flow [2022-12-11 22:05:31,579 INFO L495 AbstractCegarLoop]: Abstraction has has 1067 places, 16918 transitions, 359519 flow [2022-12-11 22:05:31,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 54.183098591549296) internal successors, (3847), 71 states have internal predecessors, (3847), 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) [2022-12-11 22:05:31,580 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:05:31,580 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:05:31,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 22:05:31,785 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 [2022-12-11 22:05:31,786 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 22:05:31,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:05:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1378770727, now seen corresponding path program 6 times [2022-12-11 22:05:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:05:31,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051962634] [2022-12-11 22:05:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:05:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:05:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:05:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 22:05:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:05:32,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051962634] [2022-12-11 22:05:32,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051962634] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:05:32,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331796152] [2022-12-11 22:05:32,375 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 22:05:32,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:05:32,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:05:32,376 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) [2022-12-11 22:05:32,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 22:05:32,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-11 22:05:32,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:05:32,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-11 22:05:32,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:05:33,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-11 22:05:33,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 22:05:33,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 22:05:34,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 22:05:34,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 22:05:34,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:05:34,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 18 [2022-12-11 22:05:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:05:34,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:05:38,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:05:38,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 86 [2022-12-11 22:05:38,184 INFO L321 Elim1Store]: treesize reduction 12, result has 81.5 percent of original size [2022-12-11 22:05:38,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 262 treesize of output 281 [2022-12-11 22:05:38,219 INFO L321 Elim1Store]: treesize reduction 12, result has 81.5 percent of original size [2022-12-11 22:05:38,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 229 treesize of output 231 [2022-12-11 22:05:38,254 INFO L321 Elim1Store]: treesize reduction 12, result has 81.5 percent of original size [2022-12-11 22:05:38,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 179 [2022-12-11 22:05:40,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 22:05:40,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 86 [2022-12-11 22:05:40,390 INFO L321 Elim1Store]: treesize reduction 56, result has 13.8 percent of original size [2022-12-11 22:05:40,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 262 treesize of output 237 [2022-12-11 22:05:40,416 INFO L321 Elim1Store]: treesize reduction 56, result has 13.8 percent of original size [2022-12-11 22:05:40,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 229 treesize of output 187 [2022-12-11 22:05:40,437 INFO L321 Elim1Store]: treesize reduction 56, result has 13.8 percent of original size [2022-12-11 22:05:40,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 135 [2022-12-11 22:05:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:05:41,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331796152] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:05:41,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:05:41,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 37, 34] total 79 [2022-12-11 22:05:41,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874039942] [2022-12-11 22:05:41,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:05:41,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-12-11 22:05:41,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:05:41,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-12-11 22:05:41,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=5530, Unknown=57, NotChecked=0, Total=6162 [2022-12-11 22:05:41,730 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 131 [2022-12-11 22:05:41,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1067 places, 16918 transitions, 359519 flow. Second operand has 79 states, 79 states have (on average 46.962025316455694) internal successors, (3710), 79 states have internal predecessors, (3710), 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) [2022-12-11 22:05:41,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:05:41,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 131 [2022-12-11 22:05:41,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:06:31,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-11 22:10:27,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-11 22:10:29,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-11 22:10:31,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2022-12-11 22:14:40,697 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 [2022-12-11 22:14:40,713 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 22:14:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 312 states. [2022-12-11 22:14:41,164 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 22:14:41,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-11 22:14:41,369 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,SelfDestructingSolverStorable14 [2022-12-11 22:14:41,370 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (79states, 44/131 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 1109306 conditions, 141142 events (60784/141141 cut-off events. For 1923072/1945331 co-relation queries the response was YES. Maximal size of possible extension queue 5052. Compared 1927607 event pairs, 2521 based on Foata normal form. 901/137639 useless extension candidates. Maximal degree in co-relation 911752. Up to 59057 conditions per place.). [2022-12-11 22:14:41,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 22:14:41,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 22:14:41,372 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1, 1] [2022-12-11 22:14:41,375 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 22:14:41,375 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 22:14:41,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 10:14:41 BasicIcfg [2022-12-11 22:14:41,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 22:14:41,384 INFO L158 Benchmark]: Toolchain (without parser) took 833983.05ms. Allocated memory was 237.0MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 213.4MB in the beginning and 675.7MB in the end (delta: -462.3MB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2022-12-11 22:14:41,384 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 237.0MB. Free memory was 213.7MB in the beginning and 213.6MB in the end (delta: 66.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 22:14:41,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.18ms. Allocated memory is still 237.0MB. Free memory was 213.4MB in the beginning and 200.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-11 22:14:41,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.73ms. Allocated memory is still 237.0MB. Free memory was 200.3MB in the beginning and 198.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 22:14:41,384 INFO L158 Benchmark]: Boogie Preprocessor took 25.03ms. Allocated memory is still 237.0MB. Free memory was 198.2MB in the beginning and 196.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 22:14:41,384 INFO L158 Benchmark]: RCFGBuilder took 449.10ms. Allocated memory is still 237.0MB. Free memory was 196.6MB in the beginning and 177.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-11 22:14:41,385 INFO L158 Benchmark]: TraceAbstraction took 833206.37ms. Allocated memory was 237.0MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 176.2MB in the beginning and 675.7MB in the end (delta: -499.5MB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-12-11 22:14:41,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 237.0MB. Free memory was 213.7MB in the beginning and 213.6MB in the end (delta: 66.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 254.18ms. Allocated memory is still 237.0MB. Free memory was 213.4MB in the beginning and 200.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.73ms. Allocated memory is still 237.0MB. Free memory was 200.3MB in the beginning and 198.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.03ms. Allocated memory is still 237.0MB. Free memory was 198.2MB in the beginning and 196.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 449.10ms. Allocated memory is still 237.0MB. Free memory was 196.6MB in the beginning and 177.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 833206.37ms. Allocated memory was 237.0MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 176.2MB in the beginning and 675.7MB in the end (delta: -499.5MB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (79states, 44/131 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 1109306 conditions, 141142 events (60784/141141 cut-off events. For 1923072/1945331 co-relation queries the response was YES. Maximal size of possible extension queue 5052. Compared 1927607 event pairs, 2521 based on Foata normal form. 901/137639 useless extension candidates. Maximal degree in co-relation 911752. Up to 59057 conditions per place.). - TimeoutResultAtElement [Line: 99]: 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 (79states, 44/131 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 1109306 conditions, 141142 events (60784/141141 cut-off events. For 1923072/1945331 co-relation queries the response was YES. Maximal size of possible extension queue 5052. Compared 1927607 event pairs, 2521 based on Foata normal form. 901/137639 useless extension candidates. Maximal degree in co-relation 911752. Up to 59057 conditions per place.). - TimeoutResultAtElement [Line: 100]: 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 (79states, 44/131 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 1109306 conditions, 141142 events (60784/141141 cut-off events. For 1923072/1945331 co-relation queries the response was YES. Maximal size of possible extension queue 5052. Compared 1927607 event pairs, 2521 based on Foata normal form. 901/137639 useless extension candidates. Maximal degree in co-relation 911752. Up to 59057 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 156 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 1.5s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 833.0s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 801.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 74 mSolverCounterUnknown, 11041 SdHoareTripleChecker+Valid, 37.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11041 mSDsluCounter, 10113 SdHoareTripleChecker+Invalid, 34.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9660 mSDsCounter, 1413 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38168 IncrementalHoareTripleChecker+Invalid, 39655 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1413 mSolverCounterUnsat, 453 mSDtfsCounter, 38168 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3413 GetRequests, 1765 SyntacticMatches, 20 SemanticMatches, 1628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264978 ImplicationChecksByTransitivity, 159.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=359519occurred in iteration=14, InterpolantAutomatonStates: 1046, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 20231 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 26.3s InterpolantComputationTime, 2726 NumberOfCodeBlocks, 2706 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3705 ConstructedInterpolants, 143 QuantifiedInterpolants, 44728 SizeOfPredicates, 197 NumberOfNonLiveVariables, 2239 ConjunctsInSsa, 349 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 242/617 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