/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:37:27,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:37:27,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:37:27,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:37:27,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:37:27,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:37:27,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:37:27,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:37:27,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:37:27,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:37:27,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:37:27,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:37:27,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:37:27,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:37:27,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:37:27,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:37:27,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:37:27,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:37:27,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:37:27,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:37:27,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:37:27,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:37:27,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:37:27,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:37:27,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:37:27,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:37:27,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:37:27,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:37:27,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:37:27,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:37:27,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:37:27,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:37:27,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:37:27,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:37:27,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:37:27,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:37:27,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:37:27,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:37:27,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:37:27,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:37:27,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:37:27,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 17:37:27,979 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:37:27,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:37:27,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:37:27,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:37:27,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:37:27,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:37:27,981 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:37:27,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:37:27,982 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:37:27,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:37:27,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:37:27,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:37:27,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:37:27,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:37:27,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:37:27,983 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:37:27,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:37:27,983 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:37:27,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:37:27,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:37:27,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:37:27,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:37:27,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:37:27,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:37:27,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:37:27,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:37:27,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:37:27,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:37:27,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:37:27,984 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:37:27,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:37:27,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:37:28,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:37:28,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:37:28,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:37:28,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:37:28,285 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:37:28,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2022-12-06 17:37:29,318 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:37:29,538 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:37:29,539 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2022-12-06 17:37:29,556 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610c86143/4448c6c7c1524168a466986917441571/FLAGa03a339a2 [2022-12-06 17:37:29,568 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610c86143/4448c6c7c1524168a466986917441571 [2022-12-06 17:37:29,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:37:29,571 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:37:29,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:37:29,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:37:29,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:37:29,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165373a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29, skipping insertion in model container [2022-12-06 17:37:29,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:37:29,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:37:29,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,763 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-12-06 17:37:29,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:37:29,783 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:37:29,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,800 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,801 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,801 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:37:29,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:37:29,824 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-12-06 17:37:29,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:37:29,836 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:37:29,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29 WrapperNode [2022-12-06 17:37:29,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:37:29,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:37:29,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:37:29,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:37:29,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,889 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 245 [2022-12-06 17:37:29,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:37:29,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:37:29,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:37:29,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:37:29,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:37:29,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:37:29,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:37:29,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:37:29,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (1/1) ... [2022-12-06 17:37:29,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:37:29,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:37:29,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 17:37:29,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 17:37:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:37:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:37:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:37:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:37:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:37:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:37:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:37:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:37:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 17:37:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 17:37:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-06 17:37:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-06 17:37:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:37:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 17:37:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 17:37:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 17:37:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:37:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:37:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:37:29,984 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:37:30,102 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:37:30,104 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:37:30,405 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:37:30,511 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:37:30,511 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-06 17:37:30,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:37:30 BoogieIcfgContainer [2022-12-06 17:37:30,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:37:30,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:37:30,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:37:30,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:37:30,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:37:29" (1/3) ... [2022-12-06 17:37:30,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1146a605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:37:30, skipping insertion in model container [2022-12-06 17:37:30,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:29" (2/3) ... [2022-12-06 17:37:30,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1146a605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:37:30, skipping insertion in model container [2022-12-06 17:37:30,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:37:30" (3/3) ... [2022-12-06 17:37:30,518 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2022-12-06 17:37:30,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:37:30,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:37:30,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:37:30,616 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-12-06 17:37:30,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 193 transitions, 430 flow [2022-12-06 17:37:30,727 INFO L130 PetriNetUnfolder]: 14/178 cut-off events. [2022-12-06 17:37:30,727 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-06 17:37:30,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 178 events. 14/178 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 155 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 152. Up to 3 conditions per place. [2022-12-06 17:37:30,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 193 transitions, 430 flow [2022-12-06 17:37:30,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 170 transitions, 370 flow [2022-12-06 17:37:30,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:37:30,757 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;@411fe663, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:37:30,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-06 17:37:30,842 INFO L130 PetriNetUnfolder]: 14/169 cut-off events. [2022-12-06 17:37:30,842 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-06 17:37:30,842 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:30,843 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:30,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:30,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -553476129, now seen corresponding path program 1 times [2022-12-06 17:37:30,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:30,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420702221] [2022-12-06 17:37:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:30,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:31,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:31,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420702221] [2022-12-06 17:37:31,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420702221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:31,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:31,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 17:37:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979369240] [2022-12-06 17:37:31,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:31,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-06 17:37:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:31,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-06 17:37:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-06 17:37:31,163 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 195 [2022-12-06 17:37:31,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 170 transitions, 370 flow. Second operand has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:31,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:31,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 195 [2022-12-06 17:37:31,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:31,297 INFO L130 PetriNetUnfolder]: 191/583 cut-off events. [2022-12-06 17:37:31,298 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-12-06 17:37:31,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 583 events. 191/583 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2309 event pairs, 111 based on Foata normal form. 64/595 useless extension candidates. Maximal degree in co-relation 865. Up to 286 conditions per place. [2022-12-06 17:37:31,309 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 21 selfloop transitions, 0 changer transitions 4/162 dead transitions. [2022-12-06 17:37:31,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 162 transitions, 396 flow [2022-12-06 17:37:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-06 17:37:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-06 17:37:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 351 transitions. [2022-12-06 17:37:31,327 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-12-06 17:37:31,329 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 1 predicate places. [2022-12-06 17:37:31,330 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 396 flow [2022-12-06 17:37:31,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:31,330 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:31,330 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:31,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:37:31,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:31,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash 468186242, now seen corresponding path program 1 times [2022-12-06 17:37:31,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:31,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887333674] [2022-12-06 17:37:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:31,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:31,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:31,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887333674] [2022-12-06 17:37:31,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887333674] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:31,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:31,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:37:31,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537160147] [2022-12-06 17:37:31,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:31,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:37:31,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:31,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:37:31,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:37:31,749 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 195 [2022-12-06 17:37:31,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:31,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:31,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 195 [2022-12-06 17:37:31,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:32,016 INFO L130 PetriNetUnfolder]: 481/1337 cut-off events. [2022-12-06 17:37:32,017 INFO L131 PetriNetUnfolder]: For 583/671 co-relation queries the response was YES. [2022-12-06 17:37:32,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 1337 events. 481/1337 cut-off events. For 583/671 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8064 event pairs, 95 based on Foata normal form. 0/1202 useless extension candidates. Maximal degree in co-relation 2829. Up to 716 conditions per place. [2022-12-06 17:37:32,027 INFO L137 encePairwiseOnDemand]: 180/195 looper letters, 69 selfloop transitions, 10 changer transitions 10/206 dead transitions. [2022-12-06 17:37:32,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 206 transitions, 780 flow [2022-12-06 17:37:32,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:37:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:37:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1186 transitions. [2022-12-06 17:37:32,031 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7602564102564102 [2022-12-06 17:37:32,031 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 8 predicate places. [2022-12-06 17:37:32,031 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 206 transitions, 780 flow [2022-12-06 17:37:32,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:32,032 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:32,032 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:32,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:37:32,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 791573686, now seen corresponding path program 2 times [2022-12-06 17:37:32,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:32,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911455268] [2022-12-06 17:37:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:32,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:32,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:32,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911455268] [2022-12-06 17:37:32,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911455268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:32,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:32,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:37:32,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708194841] [2022-12-06 17:37:32,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:32,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:37:32,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:32,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:37:32,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:37:32,276 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 195 [2022-12-06 17:37:32,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 206 transitions, 780 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:32,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:32,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 195 [2022-12-06 17:37:32,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:32,617 INFO L130 PetriNetUnfolder]: 703/1891 cut-off events. [2022-12-06 17:37:32,617 INFO L131 PetriNetUnfolder]: For 1467/1659 co-relation queries the response was YES. [2022-12-06 17:37:32,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5504 conditions, 1891 events. 703/1891 cut-off events. For 1467/1659 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12697 event pairs, 168 based on Foata normal form. 10/1729 useless extension candidates. Maximal degree in co-relation 5081. Up to 1048 conditions per place. [2022-12-06 17:37:32,629 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 106 selfloop transitions, 10 changer transitions 16/249 dead transitions. [2022-12-06 17:37:32,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 249 transitions, 1329 flow [2022-12-06 17:37:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:37:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:37:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1186 transitions. [2022-12-06 17:37:32,631 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7602564102564102 [2022-12-06 17:37:32,632 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 15 predicate places. [2022-12-06 17:37:32,632 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 249 transitions, 1329 flow [2022-12-06 17:37:32,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:32,633 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:32,633 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:32,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 17:37:32,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1081508793, now seen corresponding path program 1 times [2022-12-06 17:37:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:32,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586506203] [2022-12-06 17:37:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:32,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586506203] [2022-12-06 17:37:32,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586506203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:32,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:32,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:37:32,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412627959] [2022-12-06 17:37:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:32,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:37:32,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:32,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:37:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:37:32,863 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 195 [2022-12-06 17:37:32,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 249 transitions, 1329 flow. Second operand has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:32,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:32,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 195 [2022-12-06 17:37:32,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:33,285 INFO L130 PetriNetUnfolder]: 887/2651 cut-off events. [2022-12-06 17:37:33,285 INFO L131 PetriNetUnfolder]: For 3475/3801 co-relation queries the response was YES. [2022-12-06 17:37:33,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8789 conditions, 2651 events. 887/2651 cut-off events. For 3475/3801 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 19679 event pairs, 282 based on Foata normal form. 68/2485 useless extension candidates. Maximal degree in co-relation 6138. Up to 1363 conditions per place. [2022-12-06 17:37:33,339 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 150 selfloop transitions, 7 changer transitions 21/306 dead transitions. [2022-12-06 17:37:33,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 306 transitions, 2164 flow [2022-12-06 17:37:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:37:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:37:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1075 transitions. [2022-12-06 17:37:33,342 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7875457875457875 [2022-12-06 17:37:33,343 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 21 predicate places. [2022-12-06 17:37:33,346 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 306 transitions, 2164 flow [2022-12-06 17:37:33,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:33,347 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:33,347 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:33,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:37:33,348 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:33,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1411479933, now seen corresponding path program 1 times [2022-12-06 17:37:33,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:33,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486137568] [2022-12-06 17:37:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:33,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:33,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:33,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486137568] [2022-12-06 17:37:33,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486137568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:33,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:33,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:37:33,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758494685] [2022-12-06 17:37:33,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:33,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:37:33,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:37:33,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:37:33,545 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 195 [2022-12-06 17:37:33,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 306 transitions, 2164 flow. Second operand has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:33,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:33,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 195 [2022-12-06 17:37:33,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:33,944 INFO L130 PetriNetUnfolder]: 780/2336 cut-off events. [2022-12-06 17:37:33,944 INFO L131 PetriNetUnfolder]: For 4493/5161 co-relation queries the response was YES. [2022-12-06 17:37:33,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8948 conditions, 2336 events. 780/2336 cut-off events. For 4493/5161 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16858 event pairs, 184 based on Foata normal form. 33/2158 useless extension candidates. Maximal degree in co-relation 7138. Up to 1196 conditions per place. [2022-12-06 17:37:33,959 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 159 selfloop transitions, 9 changer transitions 62/358 dead transitions. [2022-12-06 17:37:33,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 358 transitions, 3212 flow [2022-12-06 17:37:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:37:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:37:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1235 transitions. [2022-12-06 17:37:33,962 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-12-06 17:37:33,964 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 28 predicate places. [2022-12-06 17:37:33,964 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 358 transitions, 3212 flow [2022-12-06 17:37:33,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:33,965 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:33,965 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:33,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:37:33,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:33,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1249829823, now seen corresponding path program 1 times [2022-12-06 17:37:33,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:33,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504879571] [2022-12-06 17:37:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:33,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:34,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:34,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504879571] [2022-12-06 17:37:34,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504879571] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:37:34,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10680191] [2022-12-06 17:37:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:34,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:37:34,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:37:34,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:37:34,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 17:37:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:34,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 17:37:34,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:37:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:34,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:37:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:34,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10680191] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:37:34,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:37:34,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-06 17:37:34,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875495163] [2022-12-06 17:37:34,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:37:34,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:37:34,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:34,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:37:34,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:37:34,610 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2022-12-06 17:37:34,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 358 transitions, 3212 flow. Second operand has 19 states, 19 states have (on average 146.10526315789474) internal successors, (2776), 19 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:34,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:34,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2022-12-06 17:37:34,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:35,209 INFO L130 PetriNetUnfolder]: 907/2974 cut-off events. [2022-12-06 17:37:35,209 INFO L131 PetriNetUnfolder]: For 7199/7785 co-relation queries the response was YES. [2022-12-06 17:37:35,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12564 conditions, 2974 events. 907/2974 cut-off events. For 7199/7785 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 22969 event pairs, 121 based on Foata normal form. 130/2876 useless extension candidates. Maximal degree in co-relation 7751. Up to 1454 conditions per place. [2022-12-06 17:37:35,230 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 259 selfloop transitions, 36 changer transitions 92/514 dead transitions. [2022-12-06 17:37:35,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 514 transitions, 5970 flow [2022-12-06 17:37:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-06 17:37:35,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-06 17:37:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2392 transitions. [2022-12-06 17:37:35,234 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-12-06 17:37:35,234 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 43 predicate places. [2022-12-06 17:37:35,234 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 514 transitions, 5970 flow [2022-12-06 17:37:35,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 146.10526315789474) internal successors, (2776), 19 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:35,236 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:35,236 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:35,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 17:37:35,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-06 17:37:35,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1452948689, now seen corresponding path program 1 times [2022-12-06 17:37:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:35,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514596977] [2022-12-06 17:37:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:35,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:35,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514596977] [2022-12-06 17:37:35,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514596977] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:37:35,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485913352] [2022-12-06 17:37:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:35,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:37:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:37:35,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:37:35,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 17:37:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:35,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-06 17:37:35,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:37:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:35,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:37:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:36,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485913352] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:37:36,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:37:36,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-06 17:37:36,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835048200] [2022-12-06 17:37:36,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:37:36,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:37:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:37:36,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:37:36,147 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2022-12-06 17:37:36,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 514 transitions, 5970 flow. Second operand has 19 states, 19 states have (on average 146.0) internal successors, (2774), 19 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:36,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:36,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2022-12-06 17:37:36,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:36,840 INFO L130 PetriNetUnfolder]: 800/2710 cut-off events. [2022-12-06 17:37:36,841 INFO L131 PetriNetUnfolder]: For 9593/12245 co-relation queries the response was YES. [2022-12-06 17:37:36,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12538 conditions, 2710 events. 800/2710 cut-off events. For 9593/12245 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 20532 event pairs, 88 based on Foata normal form. 82/2583 useless extension candidates. Maximal degree in co-relation 8723. Up to 1287 conditions per place. [2022-12-06 17:37:36,857 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 215 selfloop transitions, 22 changer transitions 127/491 dead transitions. [2022-12-06 17:37:36,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 491 transitions, 6324 flow [2022-12-06 17:37:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-06 17:37:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-06 17:37:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2403 transitions. [2022-12-06 17:37:36,861 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7701923076923077 [2022-12-06 17:37:36,861 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 58 predicate places. [2022-12-06 17:37:36,861 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 491 transitions, 6324 flow [2022-12-06 17:37:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 146.0) internal successors, (2774), 19 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:36,862 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:36,862 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:36,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 17:37:37,067 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,SelfDestructingSolverStorable6 [2022-12-06 17:37:37,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:37,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:37,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1645732759, now seen corresponding path program 2 times [2022-12-06 17:37:37,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:37,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638079498] [2022-12-06 17:37:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:37,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:37:37,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:37,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638079498] [2022-12-06 17:37:37,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638079498] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:37:37,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490544062] [2022-12-06 17:37:37,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:37:37,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:37:37,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:37:37,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:37:37,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 17:37:37,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:37:37,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:37:37,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-06 17:37:37,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:37:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:37:37,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:37:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:37:37,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490544062] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:37:37,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:37:37,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-12-06 17:37:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978359518] [2022-12-06 17:37:37,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:37,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-06 17:37:37,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:37,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-06 17:37:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-12-06 17:37:37,635 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2022-12-06 17:37:37,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 491 transitions, 6324 flow. Second operand has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:37,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:37,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2022-12-06 17:37:37,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:38,106 INFO L130 PetriNetUnfolder]: 698/2406 cut-off events. [2022-12-06 17:37:38,107 INFO L131 PetriNetUnfolder]: For 11541/14407 co-relation queries the response was YES. [2022-12-06 17:37:38,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12200 conditions, 2406 events. 698/2406 cut-off events. For 11541/14407 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 17723 event pairs, 72 based on Foata normal form. 88/2291 useless extension candidates. Maximal degree in co-relation 8161. Up to 1128 conditions per place. [2022-12-06 17:37:38,120 INFO L137 encePairwiseOnDemand]: 184/195 looper letters, 225 selfloop transitions, 17 changer transitions 112/477 dead transitions. [2022-12-06 17:37:38,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 477 transitions, 6823 flow [2022-12-06 17:37:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 17:37:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 17:37:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1508 transitions. [2022-12-06 17:37:38,122 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2022-12-06 17:37:38,123 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 67 predicate places. [2022-12-06 17:37:38,123 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 477 transitions, 6823 flow [2022-12-06 17:37:38,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:38,123 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:38,123 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:38,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 17:37:38,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:37:38,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:38,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1116649055, now seen corresponding path program 2 times [2022-12-06 17:37:38,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:38,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305789928] [2022-12-06 17:37:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:38,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:38,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305789928] [2022-12-06 17:37:38,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305789928] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:37:38,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362431347] [2022-12-06 17:37:38,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:37:38,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:37:38,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:37:38,508 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:37:38,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 17:37:38,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:37:38,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:37:38,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-06 17:37:38,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:37:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:38,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:37:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:38,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362431347] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:37:38,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:37:38,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-12-06 17:37:38,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261054734] [2022-12-06 17:37:38,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:38,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-06 17:37:38,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-06 17:37:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:37:38,897 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2022-12-06 17:37:38,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 477 transitions, 6823 flow. Second operand has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:38,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:38,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2022-12-06 17:37:38,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:39,335 INFO L130 PetriNetUnfolder]: 573/1947 cut-off events. [2022-12-06 17:37:39,335 INFO L131 PetriNetUnfolder]: For 10010/10851 co-relation queries the response was YES. [2022-12-06 17:37:39,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11020 conditions, 1947 events. 573/1947 cut-off events. For 10010/10851 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13317 event pairs, 49 based on Foata normal form. 37/1830 useless extension candidates. Maximal degree in co-relation 6837. Up to 931 conditions per place. [2022-12-06 17:37:39,347 INFO L137 encePairwiseOnDemand]: 182/195 looper letters, 209 selfloop transitions, 23 changer transitions 111/462 dead transitions. [2022-12-06 17:37:39,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 462 transitions, 7221 flow [2022-12-06 17:37:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 17:37:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 17:37:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1502 transitions. [2022-12-06 17:37:39,351 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7702564102564102 [2022-12-06 17:37:39,352 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 76 predicate places. [2022-12-06 17:37:39,352 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 462 transitions, 7221 flow [2022-12-06 17:37:39,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:39,352 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:39,352 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:39,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 17:37:39,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:37:39,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2093443179, now seen corresponding path program 1 times [2022-12-06 17:37:39,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:39,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096968019] [2022-12-06 17:37:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:39,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:37:40,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:40,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096968019] [2022-12-06 17:37:40,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096968019] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:37:40,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718614358] [2022-12-06 17:37:40,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:40,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:37:40,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:37:40,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:37:40,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 17:37:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:40,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-06 17:37:40,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:37:40,617 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 19 treesize of output 7 [2022-12-06 17:37:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:37:40,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:37:40,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:37:40,906 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 20 treesize of output 16 [2022-12-06 17:37:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:37:40,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718614358] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:37:40,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:37:40,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 22 [2022-12-06 17:37:40,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598571388] [2022-12-06 17:37:40,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:37:40,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 17:37:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 17:37:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-12-06 17:37:40,965 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 195 [2022-12-06 17:37:40,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 462 transitions, 7221 flow. Second operand has 22 states, 22 states have (on average 110.31818181818181) internal successors, (2427), 22 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:40,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:40,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 195 [2022-12-06 17:37:40,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:44,311 INFO L130 PetriNetUnfolder]: 6091/13166 cut-off events. [2022-12-06 17:37:44,311 INFO L131 PetriNetUnfolder]: For 86261/88209 co-relation queries the response was YES. [2022-12-06 17:37:44,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79343 conditions, 13166 events. 6091/13166 cut-off events. For 86261/88209 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 115426 event pairs, 818 based on Foata normal form. 157/12559 useless extension candidates. Maximal degree in co-relation 66402. Up to 6197 conditions per place. [2022-12-06 17:37:44,422 INFO L137 encePairwiseOnDemand]: 171/195 looper letters, 540 selfloop transitions, 165 changer transitions 143/942 dead transitions. [2022-12-06 17:37:44,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 942 transitions, 17440 flow [2022-12-06 17:37:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 17:37:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 17:37:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3956 transitions. [2022-12-06 17:37:44,430 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5966817496229261 [2022-12-06 17:37:44,431 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 109 predicate places. [2022-12-06 17:37:44,431 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 942 transitions, 17440 flow [2022-12-06 17:37:44,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 110.31818181818181) internal successors, (2427), 22 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:44,432 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:44,432 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:44,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 17:37:44,637 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,SelfDestructingSolverStorable9 [2022-12-06 17:37:44,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:37:44,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:44,638 INFO L85 PathProgramCache]: Analyzing trace with hash 370499977, now seen corresponding path program 2 times [2022-12-06 17:37:44,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:44,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87548391] [2022-12-06 17:37:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:44,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:37:45,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:45,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87548391] [2022-12-06 17:37:45,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87548391] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:37:45,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97364414] [2022-12-06 17:37:45,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:37:45,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:37:45,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:37:45,665 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:37:45,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 17:37:45,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:37:45,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:37:45,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-06 17:37:45,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:37:46,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:37:46,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-06 17:37:46,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:37:46,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-06 17:37:46,237 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 19 treesize of output 7 [2022-12-06 17:37:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:37:46,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:37:46,979 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork1_~#t3~0.base_27| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t3~0.base_27|)) (forall ((v_ArrVal_382 (Array Int Int)) (v_ArrVal_381 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t2~0.base| v_ArrVal_381) |v_thread1Thread1of1ForFork1_~#t3~0.base_27| v_ArrVal_382) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))))) (forall ((|v_thread1Thread1of1ForFork1_~#t3~0.base_27| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t3~0.base_27|)) (forall ((v_ArrVal_382 (Array Int Int)) (v_ArrVal_381 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t2~0.base| v_ArrVal_381) |v_thread1Thread1of1ForFork1_~#t3~0.base_27| v_ArrVal_382) c_~X_0~0.base) .cse0))))))) is different from false [2022-12-06 17:37:48,380 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork1_~#t2~0.base_27| Int)) (or (forall ((|v_thread1Thread1of1ForFork1_~#t3~0.base_27| Int)) (or (forall ((v_ArrVal_382 (Array Int Int)) (v_ArrVal_381 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork1_~#t2~0.base_27| v_ArrVal_381) |v_thread1Thread1of1ForFork1_~#t3~0.base_27| v_ArrVal_382) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t3~0.base_27|)))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t2~0.base_27|)))) (forall ((|v_thread1Thread1of1ForFork1_~#t2~0.base_27| Int)) (or (forall ((|v_thread1Thread1of1ForFork1_~#t3~0.base_27| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t3~0.base_27|)) (forall ((v_ArrVal_382 (Array Int Int)) (v_ArrVal_381 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork1_~#t2~0.base_27| v_ArrVal_381) |v_thread1Thread1of1ForFork1_~#t3~0.base_27| v_ArrVal_382) c_~X_0~0.base) .cse0))))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t2~0.base_27|)))))) is different from false [2022-12-06 17:37:49,779 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork1_~#t2~0.base_27| Int)) (or (forall ((|v_thread1Thread1of1ForFork1_~#t3~0.base_27| Int)) (or (forall ((v_ArrVal_382 (Array Int Int)) (v_ArrVal_381 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork1_~#t2~0.base_27| v_ArrVal_381) |v_thread1Thread1of1ForFork1_~#t3~0.base_27| v_ArrVal_382) c_~X_0~0.base) .cse0) (+ c_~s_6~0 c_~t_8~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t3~0.base_27|)))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t2~0.base_27|)))) (forall ((|v_thread1Thread1of1ForFork1_~#t2~0.base_27| Int)) (or (forall ((|v_thread1Thread1of1ForFork1_~#t3~0.base_27| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t3~0.base_27|)) (forall ((v_ArrVal_382 (Array Int Int)) (v_ArrVal_381 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork1_~#t2~0.base_27| v_ArrVal_381) |v_thread1Thread1of1ForFork1_~#t3~0.base_27| v_ArrVal_382) c_~X_0~0.base) .cse0))))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t2~0.base_27|)))))) is different from false [2022-12-06 17:37:49,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:37:49,805 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 218 treesize of output 144 [2022-12-06 17:37:49,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 126 [2022-12-06 17:37:49,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 110 [2022-12-06 17:37:49,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:37:49,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:37:49,917 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-06 17:37:49,918 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 21 treesize of output 11 [2022-12-06 17:37:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:37:50,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97364414] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:37:50,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:37:50,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 19] total 47 [2022-12-06 17:37:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896951523] [2022-12-06 17:37:50,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:37:50,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-06 17:37:50,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-06 17:37:50,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1701, Unknown=40, NotChecked=258, Total=2162 [2022-12-06 17:37:50,137 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 195 [2022-12-06 17:37:50,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 942 transitions, 17440 flow. Second operand has 47 states, 47 states have (on average 94.17021276595744) internal successors, (4426), 47 states have internal predecessors, (4426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:50,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:50,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 195 [2022-12-06 17:37:50,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:38:22,175 WARN L233 SmtUtils]: Spent 21.82s on a formula simplification. DAG size of input: 56 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 17:38:30,253 INFO L130 PetriNetUnfolder]: 10944/22382 cut-off events. [2022-12-06 17:38:30,253 INFO L131 PetriNetUnfolder]: For 174899/177482 co-relation queries the response was YES. [2022-12-06 17:38:30,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153450 conditions, 22382 events. 10944/22382 cut-off events. For 174899/177482 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 206302 event pairs, 913 based on Foata normal form. 337/21601 useless extension candidates. Maximal degree in co-relation 136789. Up to 10865 conditions per place. [2022-12-06 17:38:30,498 INFO L137 encePairwiseOnDemand]: 162/195 looper letters, 1384 selfloop transitions, 289 changer transitions 252/1997 dead transitions. [2022-12-06 17:38:30,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 1997 transitions, 38432 flow [2022-12-06 17:38:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:38:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:38:30,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 5185 transitions. [2022-12-06 17:38:30,506 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5213675213675214 [2022-12-06 17:38:30,506 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 159 predicate places. [2022-12-06 17:38:30,506 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 1997 transitions, 38432 flow [2022-12-06 17:38:30,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 94.17021276595744) internal successors, (4426), 47 states have internal predecessors, (4426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:30,508 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:38:30,508 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:38:30,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 17:38:30,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:38:30,726 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:38:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:38:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1784019514, now seen corresponding path program 1 times [2022-12-06 17:38:30,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:38:30,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415333517] [2022-12-06 17:38:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:38:30,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:38:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:38:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:38:32,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:38:32,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415333517] [2022-12-06 17:38:32,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415333517] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:38:32,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653143913] [2022-12-06 17:38:32,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:38:32,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:38:32,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:38:32,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:38:32,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 17:38:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:38:32,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-06 17:38:32,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:38:32,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:38:32,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-06 17:38:32,799 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 19 treesize of output 7 [2022-12-06 17:38:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:38:32,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:38:33,013 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_431 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_431) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) c_~s_2~0)) is different from false [2022-12-06 17:38:33,032 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_431 (Array Int Int))) (= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_431) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))) is different from false [2022-12-06 17:38:33,039 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:38:33,039 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 48 treesize of output 34 [2022-12-06 17:38:33,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-06 17:38:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:38:33,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653143913] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:38:33,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:38:33,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 17] total 42 [2022-12-06 17:38:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137272356] [2022-12-06 17:38:33,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:38:33,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-06 17:38:33,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:38:33,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-06 17:38:33,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1447, Unknown=2, NotChecked=154, Total=1722 [2022-12-06 17:38:33,268 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 195 [2022-12-06 17:38:33,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 1997 transitions, 38432 flow. Second operand has 42 states, 42 states have (on average 87.54761904761905) internal successors, (3677), 42 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:33,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:38:33,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 195 [2022-12-06 17:38:33,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:38:45,596 INFO L130 PetriNetUnfolder]: 14033/28013 cut-off events. [2022-12-06 17:38:45,597 INFO L131 PetriNetUnfolder]: For 238509/241996 co-relation queries the response was YES. [2022-12-06 17:38:45,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216435 conditions, 28013 events. 14033/28013 cut-off events. For 238509/241996 co-relation queries the response was YES. Maximal size of possible extension queue 1493. Compared 266254 event pairs, 952 based on Foata normal form. 538/27141 useless extension candidates. Maximal degree in co-relation 197061. Up to 13994 conditions per place. [2022-12-06 17:38:45,971 INFO L137 encePairwiseOnDemand]: 163/195 looper letters, 2087 selfloop transitions, 610 changer transitions 406/3172 dead transitions. [2022-12-06 17:38:45,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 3172 transitions, 66314 flow [2022-12-06 17:38:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-06 17:38:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2022-12-06 17:38:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 6688 transitions. [2022-12-06 17:38:45,983 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4698278890059712 [2022-12-06 17:38:45,984 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 231 predicate places. [2022-12-06 17:38:45,984 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 3172 transitions, 66314 flow [2022-12-06 17:38:45,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 87.54761904761905) internal successors, (3677), 42 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:45,985 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:38:45,986 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:38:45,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 17:38:46,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:38:46,191 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:38:46,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:38:46,191 INFO L85 PathProgramCache]: Analyzing trace with hash 659060469, now seen corresponding path program 1 times [2022-12-06 17:38:46,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:38:46,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988269016] [2022-12-06 17:38:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:38:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:38:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:38:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:38:47,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:38:47,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988269016] [2022-12-06 17:38:47,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988269016] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:38:47,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891950041] [2022-12-06 17:38:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:38:47,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:38:47,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:38:47,179 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:38:47,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 17:38:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:38:47,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-06 17:38:47,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:38:47,590 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 19 treesize of output 7 [2022-12-06 17:38:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:38:47,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:38:47,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:38:47,808 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 26 treesize of output 21 [2022-12-06 17:38:47,816 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-06 17:38:47,816 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 25 treesize of output 12 [2022-12-06 17:38:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:38:47,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891950041] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:38:47,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:38:47,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 10] total 26 [2022-12-06 17:38:47,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76988167] [2022-12-06 17:38:47,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:38:47,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-06 17:38:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:38:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-06 17:38:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-12-06 17:38:47,895 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 195 [2022-12-06 17:38:47,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 3172 transitions, 66314 flow. Second operand has 26 states, 26 states have (on average 104.38461538461539) internal successors, (2714), 26 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:47,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:38:47,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 195 [2022-12-06 17:38:47,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:38:58,496 INFO L130 PetriNetUnfolder]: 15860/31607 cut-off events. [2022-12-06 17:38:58,496 INFO L131 PetriNetUnfolder]: For 292400/296330 co-relation queries the response was YES. [2022-12-06 17:38:58,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266407 conditions, 31607 events. 15860/31607 cut-off events. For 292400/296330 co-relation queries the response was YES. Maximal size of possible extension queue 1699. Compared 305448 event pairs, 892 based on Foata normal form. 426/30478 useless extension candidates. Maximal degree in co-relation 244739. Up to 17839 conditions per place. [2022-12-06 17:38:58,837 INFO L137 encePairwiseOnDemand]: 167/195 looper letters, 2795 selfloop transitions, 195 changer transitions 477/3641 dead transitions. [2022-12-06 17:38:58,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 3641 transitions, 83284 flow [2022-12-06 17:38:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 17:38:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 17:38:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3681 transitions. [2022-12-06 17:38:58,853 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5552036199095023 [2022-12-06 17:38:58,854 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 264 predicate places. [2022-12-06 17:38:58,854 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 3641 transitions, 83284 flow [2022-12-06 17:38:58,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.38461538461539) internal successors, (2714), 26 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:58,855 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:38:58,855 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:38:58,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-06 17:38:59,064 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,SelfDestructingSolverStorable12 [2022-12-06 17:38:59,065 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:38:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:38:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1370743979, now seen corresponding path program 2 times [2022-12-06 17:38:59,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:38:59,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762460891] [2022-12-06 17:38:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:38:59,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:38:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:38:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:38:59,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:38:59,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762460891] [2022-12-06 17:38:59,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762460891] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:38:59,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629113126] [2022-12-06 17:38:59,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:38:59,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:38:59,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:38:59,744 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:38:59,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 17:38:59,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:38:59,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:38:59,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-06 17:38:59,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:39:00,071 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 19 treesize of output 7 [2022-12-06 17:39:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:39:00,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:39:00,502 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:39:00,502 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 26 treesize of output 21 [2022-12-06 17:39:00,512 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-06 17:39:00,512 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 25 treesize of output 12 [2022-12-06 17:39:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:39:00,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629113126] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:39:00,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:39:00,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 10] total 28 [2022-12-06 17:39:00,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375936804] [2022-12-06 17:39:00,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:39:00,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-06 17:39:00,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:39:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-06 17:39:00,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-12-06 17:39:00,585 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 195 [2022-12-06 17:39:00,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 3641 transitions, 83284 flow. Second operand has 28 states, 28 states have (on average 103.25) internal successors, (2891), 28 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:39:00,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:39:00,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 195 [2022-12-06 17:39:00,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:39:32,804 INFO L130 PetriNetUnfolder]: 33691/65885 cut-off events. [2022-12-06 17:39:32,804 INFO L131 PetriNetUnfolder]: For 675389/685896 co-relation queries the response was YES. [2022-12-06 17:39:33,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609494 conditions, 65885 events. 33691/65885 cut-off events. For 675389/685896 co-relation queries the response was YES. Maximal size of possible extension queue 3128. Compared 693363 event pairs, 1391 based on Foata normal form. 906/63753 useless extension candidates. Maximal degree in co-relation 290431. Up to 39633 conditions per place. [2022-12-06 17:39:33,668 INFO L137 encePairwiseOnDemand]: 166/195 looper letters, 6113 selfloop transitions, 383 changer transitions 855/7524 dead transitions. [2022-12-06 17:39:33,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 7524 transitions, 191235 flow [2022-12-06 17:39:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-06 17:39:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-12-06 17:39:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 6088 transitions. [2022-12-06 17:39:33,673 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5477282950967162 [2022-12-06 17:39:33,674 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 320 predicate places. [2022-12-06 17:39:33,674 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 7524 transitions, 191235 flow [2022-12-06 17:39:33,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 103.25) internal successors, (2891), 28 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:39:33,675 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:39:33,676 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:39:33,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-06 17:39:33,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-06 17:39:33,884 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:39:33,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:39:33,884 INFO L85 PathProgramCache]: Analyzing trace with hash 13826227, now seen corresponding path program 3 times [2022-12-06 17:39:33,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:39:33,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390966524] [2022-12-06 17:39:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:39:33,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:39:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:39:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:39:34,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:39:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390966524] [2022-12-06 17:39:34,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390966524] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:39:34,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393097884] [2022-12-06 17:39:34,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:39:34,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:39:34,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:39:34,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:39:34,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-06 17:39:35,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-06 17:39:35,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:39:35,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-06 17:39:35,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:39:35,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 [2022-12-06 17:39:35,466 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-06 17:39:35,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2022-12-06 17:39:35,539 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-06 17:39:35,540 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 11 treesize of output 11 [2022-12-06 17:39:35,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-06 17:39:35,977 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:39:35,977 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 17 treesize of output 17 [2022-12-06 17:39:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:39:36,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:39:36,743 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~i_3~0 1))) (and (forall ((v_ArrVal_578 (Array Int Int)) (v_~i_3~0_98 Int)) (or (< v_~i_3~0_98 c_~n_1~0) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_578) c_~X_0~0.base) (+ c_~X_0~0.offset (* v_~i_3~0_98 4))) c_~s_2~0) (+ c_~s_6~0 c_~t_8~0 1)) (not (<= v_~i_3~0_98 .cse0)))) (forall ((v_ArrVal_578 (Array Int Int)) (v_~i_3~0_98 Int)) (or (< v_~i_3~0_98 c_~n_1~0) (not (<= v_~i_3~0_98 .cse0)) (<= (+ c_~s_6~0 c_~t_8~0) (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_578) c_~X_0~0.base) (+ c_~X_0~0.offset (* v_~i_3~0_98 4))) c_~s_2~0)))))) is different from false [2022-12-06 17:39:36,758 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:39:36,758 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 56 treesize of output 44 [2022-12-06 17:39:36,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-12-06 17:39:36,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:39:36,796 INFO L321 Elim1Store]: treesize reduction 10, result has 28.6 percent of original size [2022-12-06 17:39:36,797 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 25 treesize of output 13 [2022-12-06 17:39:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:39:37,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393097884] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:39:37,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:39:37,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 24] total 56 [2022-12-06 17:39:37,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373363848] [2022-12-06 17:39:37,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:39:37,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-06 17:39:37,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:39:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-06 17:39:37,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2708, Unknown=10, NotChecked=106, Total=3080 [2022-12-06 17:39:37,773 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 195 [2022-12-06 17:39:37,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 7524 transitions, 191235 flow. Second operand has 56 states, 56 states have (on average 84.25) internal successors, (4718), 56 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:39:37,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:39:37,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 195 [2022-12-06 17:39:37,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:40:11,282 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] [2022-12-06 17:40:13,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:15,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:18,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:20,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:23,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:25,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:29,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:38,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:40,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:42,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:48,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:50,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:51,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:53,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:54,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:57,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:40:59,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:41:20,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:41:22,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:41:25,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:41:27,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:41:49,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:41:50,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:41:52,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:41:54,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:42:03,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:42:05,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:42:45,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:42:47,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:42:51,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:42:58,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:43:05,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:43:16,462 INFO L130 PetriNetUnfolder]: 49916/102191 cut-off events. [2022-12-06 17:43:16,463 INFO L131 PetriNetUnfolder]: For 1137132/1152945 co-relation queries the response was YES. [2022-12-06 17:43:16,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988847 conditions, 102191 events. 49916/102191 cut-off events. For 1137132/1152945 co-relation queries the response was YES. Maximal size of possible extension queue 4913. Compared 1189853 event pairs, 1791 based on Foata normal form. 1153/98640 useless extension candidates. Maximal degree in co-relation 500819. Up to 60607 conditions per place. [2022-12-06 17:43:17,786 INFO L137 encePairwiseOnDemand]: 144/195 looper letters, 8185 selfloop transitions, 2086 changer transitions 1922/12280 dead transitions. [2022-12-06 17:43:17,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 12280 transitions, 331146 flow [2022-12-06 17:43:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-12-06 17:43:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2022-12-06 17:43:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 17842 transitions. [2022-12-06 17:43:17,806 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45295760345265296 [2022-12-06 17:43:17,806 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 521 predicate places. [2022-12-06 17:43:17,806 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 12280 transitions, 331146 flow [2022-12-06 17:43:17,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 84.25) internal successors, (4718), 56 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:17,808 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:43:17,808 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:43:17,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-06 17:43:18,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-06 17:43:18,014 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:43:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:43:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1227408811, now seen corresponding path program 4 times [2022-12-06 17:43:18,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:43:18,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765950456] [2022-12-06 17:43:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:43:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:43:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:43:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:43:18,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:43:18,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765950456] [2022-12-06 17:43:18,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765950456] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:43:18,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642144823] [2022-12-06 17:43:18,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:43:18,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:43:18,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:43:19,000 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:43:19,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-06 17:43:19,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:43:19,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:43:19,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-06 17:43:19,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:43:19,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:43:19,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-06 17:43:19,460 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 19 treesize of output 7 [2022-12-06 17:43:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:43:19,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:43:19,727 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_627 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_627) c_~X_0~0.base) .cse0) c_~s_2~0))) (forall ((v_ArrVal_627 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_627) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 c_~t_8~0 1))))) is different from false [2022-12-06 17:43:19,749 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:43:19,750 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 60 treesize of output 45 [2022-12-06 17:43:19,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-12-06 17:43:19,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 17:43:19,767 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-06 17:43:19,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-12-06 17:43:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:43:20,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642144823] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:43:20,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:43:20,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2022-12-06 17:43:20,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621782929] [2022-12-06 17:43:20,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:43:20,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-06 17:43:20,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:43:20,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-06 17:43:20,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1287, Unknown=1, NotChecked=72, Total=1482 [2022-12-06 17:43:20,005 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 195 [2022-12-06 17:43:20,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 12280 transitions, 331146 flow. Second operand has 39 states, 39 states have (on average 93.25641025641026) internal successors, (3637), 39 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:20,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:43:20,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 195 [2022-12-06 17:43:20,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:46:41,247 INFO L130 PetriNetUnfolder]: 53052/108544 cut-off events. [2022-12-06 17:46:41,247 INFO L131 PetriNetUnfolder]: For 1311105/1328136 co-relation queries the response was YES. [2022-12-06 17:46:41,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127224 conditions, 108544 events. 53052/108544 cut-off events. For 1311105/1328136 co-relation queries the response was YES. Maximal size of possible extension queue 5277. Compared 1275309 event pairs, 1772 based on Foata normal form. 922/104538 useless extension candidates. Maximal degree in co-relation 569749. Up to 64929 conditions per place. [2022-12-06 17:46:42,576 INFO L137 encePairwiseOnDemand]: 169/195 looper letters, 9966 selfloop transitions, 830 changer transitions 2109/12992 dead transitions. [2022-12-06 17:46:42,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 12992 transitions, 376286 flow [2022-12-06 17:46:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 17:46:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 17:46:42,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2856 transitions. [2022-12-06 17:46:42,579 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5050397877984085 [2022-12-06 17:46:42,579 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 549 predicate places. [2022-12-06 17:46:42,579 INFO L495 AbstractCegarLoop]: Abstraction has has 718 places, 12992 transitions, 376286 flow [2022-12-06 17:46:42,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 93.25641025641026) internal successors, (3637), 39 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:46:42,580 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:46:42,580 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:46:42,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-06 17:46:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 17:46:42,786 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:46:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:46:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1222148933, now seen corresponding path program 5 times [2022-12-06 17:46:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:46:42,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786412588] [2022-12-06 17:46:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:46:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:46:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:46:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:46:43,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:46:43,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786412588] [2022-12-06 17:46:43,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786412588] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:46:43,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962967078] [2022-12-06 17:46:43,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 17:46:43,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:46:43,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:46:43,392 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:46:43,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-06 17:46:43,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 17:46:43,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:46:43,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-06 17:46:43,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:46:43,674 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 15 treesize of output 7 [2022-12-06 17:46:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:46:43,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:46:43,893 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:46:43,893 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 26 treesize of output 21 [2022-12-06 17:46:43,901 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-06 17:46:43,901 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 25 treesize of output 12 [2022-12-06 17:46:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:46:43,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962967078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:46:43,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:46:43,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 10] total 23 [2022-12-06 17:46:43,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475293829] [2022-12-06 17:46:43,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:46:43,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-06 17:46:43,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:46:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-06 17:46:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-12-06 17:46:43,983 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 195 [2022-12-06 17:46:43,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 12992 transitions, 376286 flow. Second operand has 23 states, 23 states have (on average 104.78260869565217) internal successors, (2410), 23 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:46:43,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:46:43,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 195 [2022-12-06 17:46:43,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:55,808 INFO L130 PetriNetUnfolder]: 56272/114943 cut-off events. [2022-12-06 17:50:55,809 INFO L131 PetriNetUnfolder]: For 1545050/1568954 co-relation queries the response was YES. [2022-12-06 17:50:56,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274421 conditions, 114943 events. 56272/114943 cut-off events. For 1545050/1568954 co-relation queries the response was YES. Maximal size of possible extension queue 5668. Compared 1358825 event pairs, 2101 based on Foata normal form. 871/110629 useless extension candidates. Maximal degree in co-relation 642697. Up to 70558 conditions per place. [2022-12-06 17:50:57,379 INFO L137 encePairwiseOnDemand]: 167/195 looper letters, 10661 selfloop transitions, 505 changer transitions 2273/13788 dead transitions. [2022-12-06 17:50:57,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 13788 transitions, 426562 flow [2022-12-06 17:50:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 17:50:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 17:50:57,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3677 transitions. [2022-12-06 17:50:57,387 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5546003016591252 [2022-12-06 17:50:57,392 INFO L294 CegarLoopForPetriNet]: 169 programPoint places, 582 predicate places. [2022-12-06 17:50:57,393 INFO L495 AbstractCegarLoop]: Abstraction has has 751 places, 13788 transitions, 426562 flow [2022-12-06 17:50:57,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.78260869565217) internal successors, (2410), 23 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:50:57,393 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:57,400 INFO L213 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:57,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-06 17:50:57,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-06 17:50:57,607 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-12-06 17:50:57,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:57,608 INFO L85 PathProgramCache]: Analyzing trace with hash -971113963, now seen corresponding path program 6 times [2022-12-06 17:50:57,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:57,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198843449] [2022-12-06 17:50:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:50:58,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:58,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198843449] [2022-12-06 17:50:58,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198843449] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:58,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238959029] [2022-12-06 17:50:58,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 17:50:58,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:58,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:58,036 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:58,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-06 17:50:58,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-06 17:50:58,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:58,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-06 17:50:58,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:58,446 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 19 treesize of output 7 [2022-12-06 17:50:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:58,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:58,696 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:50:58,697 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 26 treesize of output 21 [2022-12-06 17:50:58,705 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-06 17:50:58,706 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 25 treesize of output 12 [2022-12-06 17:50:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 17:50:58,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238959029] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:58,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:58,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 10] total 28 [2022-12-06 17:50:58,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429373644] [2022-12-06 17:50:58,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:58,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-06 17:50:58,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:58,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-06 17:50:58,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-12-06 17:50:58,800 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 195 [2022-12-06 17:50:58,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 13788 transitions, 426562 flow. Second operand has 28 states, 28 states have (on average 103.25) internal successors, (2891), 28 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:50:58,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:58,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 195 [2022-12-06 17:50:58,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 17:51:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 17:51:02,425 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 17:51:02,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-06 17:51:02,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-06 17:51:02,438 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 17:51:02,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-06 17:51:02,631 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 99/195 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 9901 conditions, 1226 events (308/1225 cut-off events. For 25168/26339 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10486 event pairs, 8 based on Foata normal form. 76/1351 useless extension candidates. Maximal degree in co-relation 7384. Up to 313 conditions per place.). [2022-12-06 17:51:02,632 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2022-12-06 17:51:02,632 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-06 17:51:02,632 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-06 17:51:02,632 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-06 17:51:02,632 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-06 17:51:02,632 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2022-12-06 17:51:02,632 INFO L458 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-06 17:51:02,634 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 17:51:02,635 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 17:51:02,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:51:02 BasicIcfg [2022-12-06 17:51:02,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 17:51:02,637 INFO L158 Benchmark]: Toolchain (without parser) took 813066.14ms. Allocated memory was 169.9MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 146.1MB in the beginning and 892.7MB in the end (delta: -746.6MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2022-12-06 17:51:02,637 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory was 146.1MB in the beginning and 146.0MB in the end (delta: 152.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 17:51:02,637 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.74ms. Allocated memory is still 169.9MB. Free memory was 145.6MB in the beginning and 130.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-06 17:51:02,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.18ms. Allocated memory is still 169.9MB. Free memory was 130.9MB in the beginning and 128.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:51:02,638 INFO L158 Benchmark]: Boogie Preprocessor took 22.42ms. Allocated memory is still 169.9MB. Free memory was 128.8MB in the beginning and 126.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:51:02,638 INFO L158 Benchmark]: RCFGBuilder took 599.97ms. Allocated memory is still 169.9MB. Free memory was 126.7MB in the beginning and 86.4MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-12-06 17:51:02,638 INFO L158 Benchmark]: TraceAbstraction took 812122.57ms. Allocated memory was 169.9MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 85.8MB in the beginning and 892.7MB in the end (delta: -806.9MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2022-12-06 17:51:02,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory was 146.1MB in the beginning and 146.0MB in the end (delta: 152.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 263.74ms. Allocated memory is still 169.9MB. Free memory was 145.6MB in the beginning and 130.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.18ms. Allocated memory is still 169.9MB. Free memory was 130.9MB in the beginning and 128.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.42ms. Allocated memory is still 169.9MB. Free memory was 128.8MB in the beginning and 126.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 599.97ms. Allocated memory is still 169.9MB. Free memory was 126.7MB in the beginning and 86.4MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 812122.57ms. Allocated memory was 169.9MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 85.8MB in the beginning and 892.7MB in the end (delta: -806.9MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 99/195 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 9901 conditions, 1226 events (308/1225 cut-off events. For 25168/26339 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10486 event pairs, 8 based on Foata normal form. 76/1351 useless extension candidates. Maximal degree in co-relation 7384. Up to 313 conditions per place.). - TimeoutResultAtElement [Line: 92]: 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 (28states, 99/195 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 9901 conditions, 1226 events (308/1225 cut-off events. For 25168/26339 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10486 event pairs, 8 based on Foata normal form. 76/1351 useless extension candidates. Maximal degree in co-relation 7384. Up to 313 conditions per place.). - TimeoutResultAtElement [Line: 91]: 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 (28states, 99/195 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 9901 conditions, 1226 events (308/1225 cut-off events. For 25168/26339 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10486 event pairs, 8 based on Foata normal form. 76/1351 useless extension candidates. Maximal degree in co-relation 7384. Up to 313 conditions per place.). - TimeoutResultAtElement [Line: 139]: 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 (28states, 99/195 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 9901 conditions, 1226 events (308/1225 cut-off events. For 25168/26339 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10486 event pairs, 8 based on Foata normal form. 76/1351 useless extension candidates. Maximal degree in co-relation 7384. Up to 313 conditions per place.). - TimeoutResultAtElement [Line: 138]: 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 (28states, 99/195 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 9901 conditions, 1226 events (308/1225 cut-off events. For 25168/26339 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10486 event pairs, 8 based on Foata normal form. 76/1351 useless extension candidates. Maximal degree in co-relation 7384. Up to 313 conditions per place.). - TimeoutResultAtElement [Line: 91]: 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 (28states, 99/195 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 9901 conditions, 1226 events (308/1225 cut-off events. For 25168/26339 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10486 event pairs, 8 based on Foata normal form. 76/1351 useless extension candidates. Maximal degree in co-relation 7384. Up to 313 conditions per place.). - TimeoutResultAtElement [Line: 92]: 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 (28states, 99/195 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 9901 conditions, 1226 events (308/1225 cut-off events. For 25168/26339 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10486 event pairs, 8 based on Foata normal form. 76/1351 useless extension candidates. Maximal degree in co-relation 7384. Up to 313 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 231 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 812.0s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 784.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 38 mSolverCounterUnknown, 11575 SdHoareTripleChecker+Valid, 82.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11575 mSDsluCounter, 12232 SdHoareTripleChecker+Invalid, 80.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1694 IncrementalHoareTripleChecker+Unchecked, 11445 mSDsCounter, 481 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27507 IncrementalHoareTripleChecker+Invalid, 29720 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 481 mSolverCounterUnsat, 787 mSDtfsCounter, 27507 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4893 GetRequests, 3908 SyntacticMatches, 41 SemanticMatches, 944 ConstructedPredicates, 7 IntricatePredicates, 1 DeprecatedPredicates, 31895 ImplicationChecksByTransitivity, 78.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=426562occurred in iteration=17, InterpolantAutomatonStates: 599, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 21.8s InterpolantComputationTime, 4764 NumberOfCodeBlocks, 4764 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 6757 ConstructedInterpolants, 37 QuantifiedInterpolants, 32540 SizeOfPredicates, 321 NumberOfNonLiveVariables, 5739 ConjunctsInSsa, 619 ConjunctsInUnsatCore, 44 InterpolantComputations, 7 PerfectInterpolantSequences, 213/371 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