/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-SemanticLbe.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-a802222-m [2022-12-12 19:47:49,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 19:47:49,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 19:47:49,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 19:47:49,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 19:47:49,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 19:47:49,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 19:47:49,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 19:47:49,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 19:47:49,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 19:47:49,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 19:47:49,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 19:47:49,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 19:47:49,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 19:47:49,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 19:47:49,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 19:47:49,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 19:47:49,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 19:47:49,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 19:47:49,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 19:47:49,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 19:47:49,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 19:47:49,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 19:47:49,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 19:47:49,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 19:47:49,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 19:47:49,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 19:47:49,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 19:47:49,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 19:47:49,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 19:47:49,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 19:47:49,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 19:47:49,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 19:47:49,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 19:47:49,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 19:47:49,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 19:47:49,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 19:47:49,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 19:47:49,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 19:47:49,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 19:47:49,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 19:47:49,176 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-SemanticLbe.epf [2022-12-12 19:47:49,201 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 19:47:49,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 19:47:49,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 19:47:49,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 19:47:49,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 19:47:49,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 19:47:49,204 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 19:47:49,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 19:47:49,204 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 19:47:49,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 19:47:49,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 19:47:49,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 19:47:49,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 19:47:49,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 19:47:49,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 19:47:49,205 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 19:47:49,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 19:47:49,205 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 19:47:49,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 19:47:49,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 19:47:49,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 19:47:49,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 19:47:49,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 19:47:49,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:47:49,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 19:47:49,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 19:47:49,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 19:47:49,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 19:47:49,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 19:47:49,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 19:47:49,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 19:47:49,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 19:47:49,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 19:47:49,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 19:47:49,519 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 19:47:49,520 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 19:47:49,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2022-12-12 19:47:50,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 19:47:50,654 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 19:47:50,654 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2022-12-12 19:47:50,664 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a75c5888/d5fc814d00fd43ddaefcade4ef6924d7/FLAG980215af0 [2022-12-12 19:47:50,677 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a75c5888/d5fc814d00fd43ddaefcade4ef6924d7 [2022-12-12 19:47:50,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 19:47:50,679 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 19:47:50,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 19:47:50,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 19:47:50,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 19:47:50,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1cbe8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50, skipping insertion in model container [2022-12-12 19:47:50,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 19:47:50,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 19:47:50,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,835 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] [2022-12-12 19:47:50,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:47:50,846 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 19:47:50,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:47:50,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:47:50,888 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] [2022-12-12 19:47:50,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:47:50,903 INFO L208 MainTranslator]: Completed translation [2022-12-12 19:47:50,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50 WrapperNode [2022-12-12 19:47:50,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 19:47:50,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 19:47:50,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 19:47:50,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 19:47:50,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,953 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 245 [2022-12-12 19:47:50,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 19:47:50,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 19:47:50,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 19:47:50,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 19:47:50,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,992 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:50,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 19:47:50,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 19:47:50,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 19:47:50,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 19:47:50,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (1/1) ... [2022-12-12 19:47:51,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:47:51,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:47:51,025 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) [2022-12-12 19:47:51,043 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 [2022-12-12 19:47:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 19:47:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 19:47:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 19:47:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 19:47:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 19:47:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 19:47:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 19:47:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 19:47:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 19:47:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 19:47:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 19:47:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 19:47:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 19:47:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 19:47:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 19:47:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 19:47:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 19:47:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 19:47:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 19:47:51,075 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 19:47:51,219 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 19:47:51,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 19:47:51,561 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 19:47:51,694 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 19:47:51,694 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-12 19:47:51,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:47:51 BoogieIcfgContainer [2022-12-12 19:47:51,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 19:47:51,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 19:47:51,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 19:47:51,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 19:47:51,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 07:47:50" (1/3) ... [2022-12-12 19:47:51,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29913dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:47:51, skipping insertion in model container [2022-12-12 19:47:51,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:47:50" (2/3) ... [2022-12-12 19:47:51,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29913dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:47:51, skipping insertion in model container [2022-12-12 19:47:51,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:47:51" (3/3) ... [2022-12-12 19:47:51,702 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2022-12-12 19:47:51,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 19:47:51,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 19:47:51,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 19:47:51,819 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-12-12 19:47:51,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 193 transitions, 430 flow [2022-12-12 19:47:51,925 INFO L130 PetriNetUnfolder]: 14/178 cut-off events. [2022-12-12 19:47:51,925 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 19:47:51,931 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. [2022-12-12 19:47:51,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 193 transitions, 430 flow [2022-12-12 19:47:51,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 170 transitions, 370 flow [2022-12-12 19:47:51,937 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 19:47:51,949 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 170 transitions, 370 flow [2022-12-12 19:47:51,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 170 transitions, 370 flow [2022-12-12 19:47:51,989 INFO L130 PetriNetUnfolder]: 14/170 cut-off events. [2022-12-12 19:47:51,989 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 19:47:51,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 170 events. 14/170 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 152. Up to 3 conditions per place. [2022-12-12 19:47:51,998 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 170 transitions, 370 flow [2022-12-12 19:47:51,998 INFO L226 LiptonReduction]: Number of co-enabled transitions 2612 [2022-12-12 19:47:56,924 INFO L241 LiptonReduction]: Total number of compositions: 133 [2022-12-12 19:47:56,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 19:47:56,941 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;@6fe3f7df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 19:47:56,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-12 19:47:56,983 INFO L130 PetriNetUnfolder]: 6/36 cut-off events. [2022-12-12 19:47:56,984 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 19:47:56,984 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:47:56,984 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:47:56,985 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)] === [2022-12-12 19:47:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:47:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1477800028, now seen corresponding path program 1 times [2022-12-12 19:47:56,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:47:56,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988492150] [2022-12-12 19:47:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:47:56,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:47:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:47:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:47:57,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:47:57,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988492150] [2022-12-12 19:47:57,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988492150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:47:57,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:47:57,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:47:57,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559722491] [2022-12-12 19:47:57,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:47:57,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:47:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:47:57,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:47:57,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:47:57,448 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 19:47:57,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-12 19:47:57,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:47:57,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 19:47:57,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:47:57,815 INFO L130 PetriNetUnfolder]: 1802/2575 cut-off events. [2022-12-12 19:47:57,816 INFO L131 PetriNetUnfolder]: For 313/313 co-relation queries the response was YES. [2022-12-12 19:47:57,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 2575 events. 1802/2575 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10965 event pairs, 486 based on Foata normal form. 1/1944 useless extension candidates. Maximal degree in co-relation 5414. Up to 1174 conditions per place. [2022-12-12 19:47:57,833 INFO L137 encePairwiseOnDemand]: 31/37 looper letters, 70 selfloop transitions, 7 changer transitions 1/84 dead transitions. [2022-12-12 19:47:57,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 84 transitions, 402 flow [2022-12-12 19:47:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:47:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:47:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2022-12-12 19:47:57,843 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2022-12-12 19:47:57,846 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2022-12-12 19:47:57,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 84 transitions, 402 flow [2022-12-12 19:47:57,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 83 transitions, 395 flow [2022-12-12 19:47:57,856 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 83 transitions, 395 flow [2022-12-12 19:47:57,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-12 19:47:57,857 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:47:57,857 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:47:57,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 19:47:57,857 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)] === [2022-12-12 19:47:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:47:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1381749236, now seen corresponding path program 2 times [2022-12-12 19:47:57,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:47:57,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991946594] [2022-12-12 19:47:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:47:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:47:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:47:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:47:58,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:47:58,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991946594] [2022-12-12 19:47:58,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991946594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:47:58,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:47:58,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:47:58,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005069194] [2022-12-12 19:47:58,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:47:58,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:47:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:47:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:47:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:47:58,006 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 19:47:58,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 83 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-12 19:47:58,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:47:58,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 19:47:58,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:47:58,345 INFO L130 PetriNetUnfolder]: 2550/3629 cut-off events. [2022-12-12 19:47:58,345 INFO L131 PetriNetUnfolder]: For 658/768 co-relation queries the response was YES. [2022-12-12 19:47:58,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11224 conditions, 3629 events. 2550/3629 cut-off events. For 658/768 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16096 event pairs, 582 based on Foata normal form. 17/2718 useless extension candidates. Maximal degree in co-relation 11022. Up to 2043 conditions per place. [2022-12-12 19:47:58,403 INFO L137 encePairwiseOnDemand]: 31/37 looper letters, 113 selfloop transitions, 8 changer transitions 1/128 dead transitions. [2022-12-12 19:47:58,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 128 transitions, 864 flow [2022-12-12 19:47:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:47:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:47:58,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2022-12-12 19:47:58,406 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6891891891891891 [2022-12-12 19:47:58,407 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2022-12-12 19:47:58,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 128 transitions, 864 flow [2022-12-12 19:47:58,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 127 transitions, 855 flow [2022-12-12 19:47:58,423 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 127 transitions, 855 flow [2022-12-12 19:47:58,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-12 19:47:58,423 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:47:58,423 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:47:58,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 19:47:58,423 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)] === [2022-12-12 19:47:58,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:47:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1968784796, now seen corresponding path program 1 times [2022-12-12 19:47:58,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:47:58,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167200891] [2022-12-12 19:47:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:47:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:47:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:47:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:47:58,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:47:58,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167200891] [2022-12-12 19:47:58,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167200891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:47:58,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:47:58,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:47:58,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921006351] [2022-12-12 19:47:58,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:47:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:47:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:47:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:47:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:47:58,547 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 19:47:58,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 127 transitions, 855 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-12-12 19:47:58,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:47:58,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 19:47:58,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:47:59,076 INFO L130 PetriNetUnfolder]: 4147/5899 cut-off events. [2022-12-12 19:47:59,076 INFO L131 PetriNetUnfolder]: For 1309/1709 co-relation queries the response was YES. [2022-12-12 19:47:59,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24276 conditions, 5899 events. 4147/5899 cut-off events. For 1309/1709 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 28631 event pairs, 910 based on Foata normal form. 11/4578 useless extension candidates. Maximal degree in co-relation 14414. Up to 3507 conditions per place. [2022-12-12 19:47:59,124 INFO L137 encePairwiseOnDemand]: 32/37 looper letters, 210 selfloop transitions, 5 changer transitions 15/236 dead transitions. [2022-12-12 19:47:59,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 236 transitions, 2080 flow [2022-12-12 19:47:59,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 19:47:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 19:47:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2022-12-12 19:47:59,126 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-12-12 19:47:59,127 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2022-12-12 19:47:59,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 236 transitions, 2080 flow [2022-12-12 19:47:59,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 221 transitions, 1933 flow [2022-12-12 19:47:59,149 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 221 transitions, 1933 flow [2022-12-12 19:47:59,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-12-12 19:47:59,149 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:47:59,149 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:47:59,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 19:47:59,149 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)] === [2022-12-12 19:47:59,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:47:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1454718951, now seen corresponding path program 1 times [2022-12-12 19:47:59,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:47:59,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564129824] [2022-12-12 19:47:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:47:59,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:47:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:47:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:47:59,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:47:59,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564129824] [2022-12-12 19:47:59,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564129824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:47:59,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:47:59,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:47:59,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301280176] [2022-12-12 19:47:59,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:47:59,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:47:59,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:47:59,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:47:59,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:47:59,260 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 19:47:59,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 221 transitions, 1933 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2022-12-12 19:47:59,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:47:59,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 19:47:59,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:47:59,601 INFO L130 PetriNetUnfolder]: 2901/4179 cut-off events. [2022-12-12 19:47:59,601 INFO L131 PetriNetUnfolder]: For 1363/1675 co-relation queries the response was YES. [2022-12-12 19:47:59,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21203 conditions, 4179 events. 2901/4179 cut-off events. For 1363/1675 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19371 event pairs, 654 based on Foata normal form. 2/3231 useless extension candidates. Maximal degree in co-relation 17862. Up to 3507 conditions per place. [2022-12-12 19:47:59,619 INFO L137 encePairwiseOnDemand]: 31/37 looper letters, 120 selfloop transitions, 2 changer transitions 45/173 dead transitions. [2022-12-12 19:47:59,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 173 transitions, 1844 flow [2022-12-12 19:47:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 19:47:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 19:47:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2022-12-12 19:47:59,620 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2022-12-12 19:47:59,621 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2022-12-12 19:47:59,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 173 transitions, 1844 flow [2022-12-12 19:47:59,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 128 transitions, 1349 flow [2022-12-12 19:47:59,636 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 128 transitions, 1349 flow [2022-12-12 19:47:59,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2022-12-12 19:47:59,636 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:47:59,636 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:47:59,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 19:47:59,637 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)] === [2022-12-12 19:47:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:47:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash -953504836, now seen corresponding path program 1 times [2022-12-12 19:47:59,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:47:59,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940370238] [2022-12-12 19:47:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:47:59,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:47:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:47:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:47:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:47:59,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940370238] [2022-12-12 19:47:59,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940370238] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:47:59,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238170950] [2022-12-12 19:47:59,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:47:59,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:47:59,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:47:59,787 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) [2022-12-12 19:47:59,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 19:47:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:47:59,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 19:47:59,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:00,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:00,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238170950] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:48:00,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:48:00,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 19:48:00,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618608710] [2022-12-12 19:48:00,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:48:00,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 19:48:00,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:00,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 19:48:00,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-12 19:48:00,147 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 19:48:00,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 128 transitions, 1349 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 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) [2022-12-12 19:48:00,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:00,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 19:48:00,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:00,832 INFO L130 PetriNetUnfolder]: 4147/5860 cut-off events. [2022-12-12 19:48:00,832 INFO L131 PetriNetUnfolder]: For 2372/4175 co-relation queries the response was YES. [2022-12-12 19:48:00,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35810 conditions, 5860 events. 4147/5860 cut-off events. For 2372/4175 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 28412 event pairs, 838 based on Foata normal form. 9/4532 useless extension candidates. Maximal degree in co-relation 21280. Up to 5784 conditions per place. [2022-12-12 19:48:00,906 INFO L137 encePairwiseOnDemand]: 31/37 looper letters, 290 selfloop transitions, 11 changer transitions 25/332 dead transitions. [2022-12-12 19:48:00,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 332 transitions, 4251 flow [2022-12-12 19:48:00,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 19:48:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 19:48:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2022-12-12 19:48:00,907 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.555984555984556 [2022-12-12 19:48:00,909 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2022-12-12 19:48:00,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 332 transitions, 4251 flow [2022-12-12 19:48:00,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 307 transitions, 3906 flow [2022-12-12 19:48:00,939 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 307 transitions, 3906 flow [2022-12-12 19:48:00,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 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) [2022-12-12 19:48:00,939 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:00,939 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:48:00,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 19:48:01,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:01,164 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)] === [2022-12-12 19:48:01,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:01,167 INFO L85 PathProgramCache]: Analyzing trace with hash -16655674, now seen corresponding path program 1 times [2022-12-12 19:48:01,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:01,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657026430] [2022-12-12 19:48:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:01,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:01,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:01,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657026430] [2022-12-12 19:48:01,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657026430] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:01,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792297792] [2022-12-12 19:48:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:01,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:01,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:01,366 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) [2022-12-12 19:48:01,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 19:48:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:01,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 19:48:01,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:01,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:01,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792297792] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:48:01,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:48:01,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 19:48:01,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167353464] [2022-12-12 19:48:01,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:48:01,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 19:48:01,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 19:48:01,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-12-12 19:48:01,601 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 19:48:01,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 307 transitions, 3906 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2022-12-12 19:48:01,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:01,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 19:48:01,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:02,104 INFO L130 PetriNetUnfolder]: 2717/3974 cut-off events. [2022-12-12 19:48:02,104 INFO L131 PetriNetUnfolder]: For 2237/2865 co-relation queries the response was YES. [2022-12-12 19:48:02,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28034 conditions, 3974 events. 2717/3974 cut-off events. For 2237/2865 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18561 event pairs, 260 based on Foata normal form. 5/3211 useless extension candidates. Maximal degree in co-relation 23460. Up to 3888 conditions per place. [2022-12-12 19:48:02,122 INFO L137 encePairwiseOnDemand]: 29/37 looper letters, 273 selfloop transitions, 23 changer transitions 53/355 dead transitions. [2022-12-12 19:48:02,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 355 transitions, 5177 flow [2022-12-12 19:48:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 19:48:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 19:48:02,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2022-12-12 19:48:02,124 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.44015444015444016 [2022-12-12 19:48:02,125 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2022-12-12 19:48:02,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 355 transitions, 5177 flow [2022-12-12 19:48:02,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 302 transitions, 4384 flow [2022-12-12 19:48:02,141 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 302 transitions, 4384 flow [2022-12-12 19:48:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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) [2022-12-12 19:48:02,142 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:02,142 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:48:02,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 19:48:02,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 19:48:02,348 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)] === [2022-12-12 19:48:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash 454995690, now seen corresponding path program 2 times [2022-12-12 19:48:02,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:02,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889320574] [2022-12-12 19:48:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:02,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:02,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889320574] [2022-12-12 19:48:02,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889320574] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26778546] [2022-12-12 19:48:02,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 19:48:02,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:02,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:02,493 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) [2022-12-12 19:48:02,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 19:48:02,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 19:48:02,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:48:02,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 19:48:02,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:02,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:02,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26778546] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:02,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 19:48:02,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2022-12-12 19:48:02,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744864132] [2022-12-12 19:48:02,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:48:02,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 19:48:02,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 19:48:02,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-12 19:48:02,711 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 19:48:02,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 302 transitions, 4384 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-12-12 19:48:02,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:02,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 19:48:02,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:02,988 INFO L130 PetriNetUnfolder]: 1854/2614 cut-off events. [2022-12-12 19:48:02,989 INFO L131 PetriNetUnfolder]: For 2020/3357 co-relation queries the response was YES. [2022-12-12 19:48:02,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21039 conditions, 2614 events. 1854/2614 cut-off events. For 2020/3357 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10589 event pairs, 107 based on Foata normal form. 17/2132 useless extension candidates. Maximal degree in co-relation 20778. Up to 2572 conditions per place. [2022-12-12 19:48:03,003 INFO L137 encePairwiseOnDemand]: 30/37 looper letters, 284 selfloop transitions, 19 changer transitions 0/309 dead transitions. [2022-12-12 19:48:03,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 309 transitions, 5058 flow [2022-12-12 19:48:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 19:48:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 19:48:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2022-12-12 19:48:03,005 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36936936936936937 [2022-12-12 19:48:03,005 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2022-12-12 19:48:03,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 309 transitions, 5058 flow [2022-12-12 19:48:03,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 309 transitions, 5058 flow [2022-12-12 19:48:03,019 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 309 transitions, 5058 flow [2022-12-12 19:48:03,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-12-12 19:48:03,019 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:03,019 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:48:03,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 19:48:03,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:03,225 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)] === [2022-12-12 19:48:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash -180949747, now seen corresponding path program 1 times [2022-12-12 19:48:03,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:03,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827830915] [2022-12-12 19:48:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:03,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:03,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827830915] [2022-12-12 19:48:03,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827830915] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:03,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023401551] [2022-12-12 19:48:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:03,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:03,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:03,401 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) [2022-12-12 19:48:03,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 19:48:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:03,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 19:48:03,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:03,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:48:03,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023401551] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:03,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 19:48:03,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2022-12-12 19:48:03,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584380865] [2022-12-12 19:48:03,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:48:03,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 19:48:03,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 19:48:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-12 19:48:03,605 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 19:48:03,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 309 transitions, 5058 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-12-12 19:48:03,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:03,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 19:48:03,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:03,854 INFO L130 PetriNetUnfolder]: 1465/2071 cut-off events. [2022-12-12 19:48:03,854 INFO L131 PetriNetUnfolder]: For 2074/3043 co-relation queries the response was YES. [2022-12-12 19:48:03,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18727 conditions, 2071 events. 1465/2071 cut-off events. For 2074/3043 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7982 event pairs, 99 based on Foata normal form. 16/1780 useless extension candidates. Maximal degree in co-relation 18491. Up to 2037 conditions per place. [2022-12-12 19:48:03,865 INFO L137 encePairwiseOnDemand]: 32/37 looper letters, 202 selfloop transitions, 16 changer transitions 0/224 dead transitions. [2022-12-12 19:48:03,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 224 transitions, 4080 flow [2022-12-12 19:48:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 19:48:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 19:48:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2022-12-12 19:48:03,866 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2022-12-12 19:48:03,866 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2022-12-12 19:48:03,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 224 transitions, 4080 flow [2022-12-12 19:48:03,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 224 transitions, 4080 flow [2022-12-12 19:48:03,877 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 224 transitions, 4080 flow [2022-12-12 19:48:03,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-12-12 19:48:03,878 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:03,878 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:48:03,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 19:48:04,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:04,083 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)] === [2022-12-12 19:48:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1643735298, now seen corresponding path program 1 times [2022-12-12 19:48:04,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:04,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919452003] [2022-12-12 19:48:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:04,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:04,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:04,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919452003] [2022-12-12 19:48:04,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919452003] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:04,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464886975] [2022-12-12 19:48:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:04,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:04,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:04,556 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) [2022-12-12 19:48:04,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 19:48:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:04,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-12 19:48:04,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:04,749 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 [2022-12-12 19:48:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:04,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:04,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:48:04,856 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 [2022-12-12 19:48:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:04,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464886975] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:48:04,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:48:04,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-12-12 19:48:04,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540111633] [2022-12-12 19:48:04,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:48:04,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 19:48:04,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:04,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 19:48:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-12-12 19:48:04,887 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 37 [2022-12-12 19:48:04,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 224 transitions, 4080 flow. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 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) [2022-12-12 19:48:04,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:04,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 37 [2022-12-12 19:48:04,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:06,085 INFO L130 PetriNetUnfolder]: 3962/5545 cut-off events. [2022-12-12 19:48:06,085 INFO L131 PetriNetUnfolder]: For 6727/6727 co-relation queries the response was YES. [2022-12-12 19:48:06,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54246 conditions, 5545 events. 3962/5545 cut-off events. For 6727/6727 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 24430 event pairs, 209 based on Foata normal form. 2/4633 useless extension candidates. Maximal degree in co-relation 53573. Up to 5294 conditions per place. [2022-12-12 19:48:06,133 INFO L137 encePairwiseOnDemand]: 26/37 looper letters, 514 selfloop transitions, 116 changer transitions 27/660 dead transitions. [2022-12-12 19:48:06,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 660 transitions, 13259 flow [2022-12-12 19:48:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 19:48:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 19:48:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 279 transitions. [2022-12-12 19:48:06,138 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47128378378378377 [2022-12-12 19:48:06,139 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2022-12-12 19:48:06,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 660 transitions, 13259 flow [2022-12-12 19:48:06,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 633 transitions, 12683 flow [2022-12-12 19:48:06,174 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 633 transitions, 12683 flow [2022-12-12 19:48:06,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 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) [2022-12-12 19:48:06,174 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:06,174 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:48:06,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 19:48:06,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:06,380 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)] === [2022-12-12 19:48:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:06,380 INFO L85 PathProgramCache]: Analyzing trace with hash -651261020, now seen corresponding path program 2 times [2022-12-12 19:48:06,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:06,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582917693] [2022-12-12 19:48:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:06,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:06,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:06,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582917693] [2022-12-12 19:48:06,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582917693] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:06,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414408048] [2022-12-12 19:48:06,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 19:48:06,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:06,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:06,904 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) [2022-12-12 19:48:06,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 19:48:07,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 19:48:07,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:48:07,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-12 19:48:07,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:07,086 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-12 19:48:07,086 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-12 19:48:07,153 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-12 19:48:07,154 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 15 treesize of output 15 [2022-12-12 19:48:07,225 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 [2022-12-12 19:48:07,269 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 [2022-12-12 19:48:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 19:48:07,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:07,379 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_430 (Array Int Int))) (<= c_~s_2~0 (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_430) c_~X_0~0.base) .cse0))) (forall ((v_ArrVal_430 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_430) c_~X_0~0.base) .cse0) (+ 1 c_~s_2~0))))) is different from false [2022-12-12 19:48:07,441 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:48:07,442 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 50 treesize of output 36 [2022-12-12 19:48:07,445 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 14 treesize of output 10 [2022-12-12 19:48:07,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 19:48:07,462 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-12 19:48:07,462 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 20 treesize of output 10 [2022-12-12 19:48:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:07,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414408048] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:48:07,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:48:07,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 21 [2022-12-12 19:48:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143351635] [2022-12-12 19:48:07,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:48:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 19:48:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 19:48:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=4, NotChecked=40, Total=506 [2022-12-12 19:48:07,570 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 37 [2022-12-12 19:48:07,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 633 transitions, 12683 flow. Second operand has 23 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 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) [2022-12-12 19:48:07,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:07,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 37 [2022-12-12 19:48:07,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:14,303 INFO L130 PetriNetUnfolder]: 7028/9765 cut-off events. [2022-12-12 19:48:14,303 INFO L131 PetriNetUnfolder]: For 9455/9479 co-relation queries the response was YES. [2022-12-12 19:48:14,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105945 conditions, 9765 events. 7028/9765 cut-off events. For 9455/9479 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46978 event pairs, 174 based on Foata normal form. 25/8130 useless extension candidates. Maximal degree in co-relation 104746. Up to 9415 conditions per place. [2022-12-12 19:48:14,447 INFO L137 encePairwiseOnDemand]: 14/37 looper letters, 989 selfloop transitions, 320 changer transitions 29/1341 dead transitions. [2022-12-12 19:48:14,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 1341 transitions, 29683 flow [2022-12-12 19:48:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-12 19:48:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-12 19:48:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 348 transitions. [2022-12-12 19:48:14,449 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.408930669800235 [2022-12-12 19:48:14,449 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2022-12-12 19:48:14,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 1341 transitions, 29683 flow [2022-12-12 19:48:14,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 1312 transitions, 29018 flow [2022-12-12 19:48:14,517 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 1312 transitions, 29018 flow [2022-12-12 19:48:14,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 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) [2022-12-12 19:48:14,518 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:14,518 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:48:14,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-12 19:48:14,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:14,724 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)] === [2022-12-12 19:48:14,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:14,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2021309290, now seen corresponding path program 3 times [2022-12-12 19:48:14,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:14,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168254074] [2022-12-12 19:48:14,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:14,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:15,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:15,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168254074] [2022-12-12 19:48:15,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168254074] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:15,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670000899] [2022-12-12 19:48:15,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 19:48:15,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:15,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:15,492 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) [2022-12-12 19:48:15,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 19:48:15,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 19:48:15,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:48:15,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-12 19:48:15,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:15,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 19:48:15,803 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 [2022-12-12 19:48:15,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 19:48:15,854 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 [2022-12-12 19:48:15,887 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 [2022-12-12 19:48:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 19:48:15,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:16,093 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_487 (Array Int Int)) (v_ArrVal_488 (Array Int Int))) (< (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t2~0.base| v_ArrVal_487) |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_488) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_487 (Array Int Int)) (v_ArrVal_488 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t2~0.base| v_ArrVal_487) |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_488) c_~X_0~0.base) .cse0) c_~s_2~0))))) is different from false [2022-12-12 19:48:17,231 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork1_~#t2~0.base_60| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t2~0.base_60|)) (forall ((|v_thread1Thread1of1ForFork1_~#t3~0.base_48| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t3~0.base_48|)) (forall ((v_ArrVal_487 (Array Int Int)) (v_ArrVal_488 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork1_~#t2~0.base_60| v_ArrVal_487) |v_thread1Thread1of1ForFork1_~#t3~0.base_48| v_ArrVal_488) c_~X_0~0.base) .cse0))))))) (forall ((|v_thread1Thread1of1ForFork1_~#t2~0.base_60| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t2~0.base_60|)) (forall ((|v_thread1Thread1of1ForFork1_~#t3~0.base_48| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork1_~#t3~0.base_48|)) (forall ((v_ArrVal_487 (Array Int Int)) (v_ArrVal_488 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork1_~#t2~0.base_60| v_ArrVal_487) |v_thread1Thread1of1ForFork1_~#t3~0.base_48| v_ArrVal_488) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))))))))) is different from false [2022-12-12 19:48:17,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:48:17,261 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 108 treesize of output 76 [2022-12-12 19:48:17,266 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 34 treesize of output 30 [2022-12-12 19:48:17,270 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 62 treesize of output 54 [2022-12-12 19:48:17,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 19:48:17,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 19:48:17,330 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-12 19:48:17,331 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 10 [2022-12-12 19:48:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:17,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670000899] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:48:17,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:48:17,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 24 [2022-12-12 19:48:17,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079042983] [2022-12-12 19:48:17,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:48:17,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 19:48:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 19:48:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=477, Unknown=9, NotChecked=90, Total=650 [2022-12-12 19:48:17,402 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 37 [2022-12-12 19:48:17,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 1312 transitions, 29018 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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) [2022-12-12 19:48:17,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:17,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 37 [2022-12-12 19:48:17,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:21,588 INFO L130 PetriNetUnfolder]: 10324/14268 cut-off events. [2022-12-12 19:48:21,588 INFO L131 PetriNetUnfolder]: For 12878/12902 co-relation queries the response was YES. [2022-12-12 19:48:21,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169447 conditions, 14268 events. 10324/14268 cut-off events. For 12878/12902 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 71580 event pairs, 188 based on Foata normal form. 8/11568 useless extension candidates. Maximal degree in co-relation 167514. Up to 13834 conditions per place. [2022-12-12 19:48:21,694 INFO L137 encePairwiseOnDemand]: 23/37 looper letters, 1892 selfloop transitions, 274 changer transitions 61/2230 dead transitions. [2022-12-12 19:48:21,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 2230 transitions, 53791 flow [2022-12-12 19:48:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 19:48:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 19:48:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 248 transitions. [2022-12-12 19:48:21,695 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.37237237237237236 [2022-12-12 19:48:21,696 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 82 predicate places. [2022-12-12 19:48:21,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 2230 transitions, 53791 flow [2022-12-12 19:48:21,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 2169 transitions, 52285 flow [2022-12-12 19:48:21,802 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 2169 transitions, 52285 flow [2022-12-12 19:48:21,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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) [2022-12-12 19:48:21,802 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:21,803 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:48:21,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 19:48:22,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:22,009 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)] === [2022-12-12 19:48:22,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash -12143188, now seen corresponding path program 1 times [2022-12-12 19:48:22,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:22,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241129284] [2022-12-12 19:48:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:22,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241129284] [2022-12-12 19:48:22,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241129284] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363758637] [2022-12-12 19:48:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:22,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:22,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:22,448 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) [2022-12-12 19:48:22,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 19:48:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:22,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-12 19:48:22,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:22,637 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 [2022-12-12 19:48:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:22,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:22,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:48:22,744 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 [2022-12-12 19:48:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:22,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363758637] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:48:22,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:48:22,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-12-12 19:48:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944332553] [2022-12-12 19:48:22,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:48:22,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 19:48:22,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 19:48:22,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-12-12 19:48:22,772 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 37 [2022-12-12 19:48:22,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 2169 transitions, 52285 flow. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 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) [2022-12-12 19:48:22,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:22,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 37 [2022-12-12 19:48:22,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:28,104 INFO L130 PetriNetUnfolder]: 11973/16531 cut-off events. [2022-12-12 19:48:28,105 INFO L131 PetriNetUnfolder]: For 14394/14459 co-relation queries the response was YES. [2022-12-12 19:48:28,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213287 conditions, 16531 events. 11973/16531 cut-off events. For 14394/14459 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 84899 event pairs, 178 based on Foata normal form. 19/13492 useless extension candidates. Maximal degree in co-relation 210786. Up to 16084 conditions per place. [2022-12-12 19:48:28,352 INFO L137 encePairwiseOnDemand]: 27/37 looper letters, 2474 selfloop transitions, 150 changer transitions 18/2645 dead transitions. [2022-12-12 19:48:28,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 2645 transitions, 69134 flow [2022-12-12 19:48:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 19:48:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 19:48:28,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 250 transitions. [2022-12-12 19:48:28,356 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4222972972972973 [2022-12-12 19:48:28,357 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 97 predicate places. [2022-12-12 19:48:28,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 2645 transitions, 69134 flow [2022-12-12 19:48:28,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 2627 transitions, 68648 flow [2022-12-12 19:48:28,503 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 2627 transitions, 68648 flow [2022-12-12 19:48:28,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 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) [2022-12-12 19:48:28,521 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:28,521 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:48:28,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 19:48:28,721 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,SelfDestructingSolverStorable11 [2022-12-12 19:48:28,722 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)] === [2022-12-12 19:48:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash 460001678, now seen corresponding path program 4 times [2022-12-12 19:48:28,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:28,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466642235] [2022-12-12 19:48:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:29,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:29,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466642235] [2022-12-12 19:48:29,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466642235] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:29,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217538796] [2022-12-12 19:48:29,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 19:48:29,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:29,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:29,152 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) [2022-12-12 19:48:29,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 19:48:29,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 19:48:29,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:48:29,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-12 19:48:29,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:29,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 19:48:29,418 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 [2022-12-12 19:48:29,443 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 [2022-12-12 19:48:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:29,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:29,562 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_601 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_601) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_601 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_601) c_~X_0~0.base) .cse0) c_~s_2~0))))) is different from false [2022-12-12 19:48:29,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:48:29,575 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 [2022-12-12 19:48:29,578 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 [2022-12-12 19:48:29,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 19:48:29,595 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-12 19:48:29,596 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 [2022-12-12 19:48:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:29,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217538796] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:48:29,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:48:29,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-12 19:48:29,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105419535] [2022-12-12 19:48:29,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:48:29,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 19:48:29,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:29,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 19:48:29,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=354, Unknown=1, NotChecked=38, Total=462 [2022-12-12 19:48:29,703 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 37 [2022-12-12 19:48:29,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 2627 transitions, 68648 flow. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 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) [2022-12-12 19:48:29,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:29,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 37 [2022-12-12 19:48:29,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:36,630 INFO L130 PetriNetUnfolder]: 13866/19123 cut-off events. [2022-12-12 19:48:36,630 INFO L131 PetriNetUnfolder]: For 17724/17764 co-relation queries the response was YES. [2022-12-12 19:48:36,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265823 conditions, 19123 events. 13866/19123 cut-off events. For 17724/17764 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 100318 event pairs, 213 based on Foata normal form. 27/15495 useless extension candidates. Maximal degree in co-relation 262819. Up to 18626 conditions per place. [2022-12-12 19:48:36,803 INFO L137 encePairwiseOnDemand]: 27/37 looper letters, 2944 selfloop transitions, 170 changer transitions 91/3208 dead transitions. [2022-12-12 19:48:36,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 3208 transitions, 90347 flow [2022-12-12 19:48:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 19:48:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 19:48:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2022-12-12 19:48:36,809 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2022-12-12 19:48:36,810 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 104 predicate places. [2022-12-12 19:48:36,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 3208 transitions, 90347 flow [2022-12-12 19:48:37,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 3117 transitions, 87736 flow [2022-12-12 19:48:37,096 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 3117 transitions, 87736 flow [2022-12-12 19:48:37,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 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) [2022-12-12 19:48:37,096 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:37,096 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:48:37,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 19:48:37,301 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,SelfDestructingSolverStorable12 [2022-12-12 19:48:37,301 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)] === [2022-12-12 19:48:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1792651295, now seen corresponding path program 1 times [2022-12-12 19:48:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:37,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479661451] [2022-12-12 19:48:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:37,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:37,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:37,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479661451] [2022-12-12 19:48:37,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479661451] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:37,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727162412] [2022-12-12 19:48:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:37,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:37,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:37,832 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) [2022-12-12 19:48:37,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 19:48:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:37,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-12 19:48:37,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:38,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 19:48:38,020 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 [2022-12-12 19:48:38,103 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 [2022-12-12 19:48:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:38,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:38,224 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_658 (Array Int Int))) (<= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_658) c_~X_0~0.base) .cse0))) (forall ((v_ArrVal_658 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_658) c_~X_0~0.base) .cse0) (+ c_~t_4~0 1 c_~s_2~0))))) is different from false [2022-12-12 19:48:38,238 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:48:38,238 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 [2022-12-12 19:48:38,240 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 [2022-12-12 19:48:38,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 19:48:38,253 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-12 19:48:38,253 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 21 treesize of output 11 [2022-12-12 19:48:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:38,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727162412] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:48:38,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:48:38,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2022-12-12 19:48:38,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033677839] [2022-12-12 19:48:38,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:48:38,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 19:48:38,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 19:48:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=434, Unknown=1, NotChecked=42, Total=552 [2022-12-12 19:48:38,327 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 37 [2022-12-12 19:48:38,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 3117 transitions, 87736 flow. Second operand has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 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) [2022-12-12 19:48:38,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:38,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 37 [2022-12-12 19:48:38,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:48:48,578 INFO L130 PetriNetUnfolder]: 15375/21178 cut-off events. [2022-12-12 19:48:48,579 INFO L131 PetriNetUnfolder]: For 18585/18625 co-relation queries the response was YES. [2022-12-12 19:48:48,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315884 conditions, 21178 events. 15375/21178 cut-off events. For 18585/18625 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 113052 event pairs, 221 based on Foata normal form. 27/17247 useless extension candidates. Maximal degree in co-relation 312365. Up to 20670 conditions per place. [2022-12-12 19:48:48,760 INFO L137 encePairwiseOnDemand]: 26/37 looper letters, 3265 selfloop transitions, 307 changer transitions 58/3633 dead transitions. [2022-12-12 19:48:48,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 3633 transitions, 109655 flow [2022-12-12 19:48:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 19:48:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 19:48:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 207 transitions. [2022-12-12 19:48:48,762 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3996138996138996 [2022-12-12 19:48:48,762 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 117 predicate places. [2022-12-12 19:48:48,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 3633 transitions, 109655 flow [2022-12-12 19:48:48,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 3575 transitions, 107852 flow [2022-12-12 19:48:48,953 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 3575 transitions, 107852 flow [2022-12-12 19:48:48,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 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) [2022-12-12 19:48:48,953 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:48:48,953 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:48:48,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 19:48:49,158 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,SelfDestructingSolverStorable13 [2022-12-12 19:48:49,159 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)] === [2022-12-12 19:48:49,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:48:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash 323535302, now seen corresponding path program 5 times [2022-12-12 19:48:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:48:49,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436070931] [2022-12-12 19:48:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:48:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:48:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:48:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:48:49,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436070931] [2022-12-12 19:48:49,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436070931] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:48:49,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116991863] [2022-12-12 19:48:49,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 19:48:49,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:48:49,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:48:49,639 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) [2022-12-12 19:48:49,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 19:48:49,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 19:48:49,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:48:49,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-12 19:48:49,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:48:49,773 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-12 19:48:49,774 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-12 19:48:49,850 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-12 19:48:49,850 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 15 treesize of output 15 [2022-12-12 19:48:49,901 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 [2022-12-12 19:48:49,951 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 [2022-12-12 19:48:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 19:48:49,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:48:50,085 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~X_0~0.offset 4)) (.cse0 (+ c_~t_4~0 c_~s_2~0))) (and (forall ((v_ArrVal_720 (Array Int Int))) (< .cse0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_720) c_~X_0~0.base) .cse1) 1))) (forall ((v_ArrVal_720 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_720) c_~X_0~0.base) .cse1) .cse0)))) is different from false [2022-12-12 19:48:50,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:48:50,104 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 [2022-12-12 19:48:50,106 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 [2022-12-12 19:48:50,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 19:48:50,119 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-12 19:48:50,119 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 22 treesize of output 12 [2022-12-12 19:48:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:48:50,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116991863] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:48:50,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:48:50,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 21 [2022-12-12 19:48:50,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758865914] [2022-12-12 19:48:50,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:48:50,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 19:48:50,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:48:50,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 19:48:50,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=397, Unknown=1, NotChecked=40, Total=506 [2022-12-12 19:48:50,219 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 37 [2022-12-12 19:48:50,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 3575 transitions, 107852 flow. Second operand has 23 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 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) [2022-12-12 19:48:50,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:48:50,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 37 [2022-12-12 19:48:50,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:49:07,566 INFO L130 PetriNetUnfolder]: 17027/23407 cut-off events. [2022-12-12 19:49:07,567 INFO L131 PetriNetUnfolder]: For 20665/20705 co-relation queries the response was YES. [2022-12-12 19:49:07,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372670 conditions, 23407 events. 17027/23407 cut-off events. For 20665/20705 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 126231 event pairs, 221 based on Foata normal form. 27/18998 useless extension candidates. Maximal degree in co-relation 368726. Up to 22877 conditions per place. [2022-12-12 19:49:07,760 INFO L137 encePairwiseOnDemand]: 24/37 looper letters, 3681 selfloop transitions, 351 changer transitions 91/4126 dead transitions. [2022-12-12 19:49:07,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 4126 transitions, 132825 flow [2022-12-12 19:49:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 19:49:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 19:49:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 213 transitions. [2022-12-12 19:49:07,762 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.31981981981981983 [2022-12-12 19:49:07,762 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 134 predicate places. [2022-12-12 19:49:07,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 4126 transitions, 132825 flow [2022-12-12 19:49:07,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 4035 transitions, 129850 flow [2022-12-12 19:49:07,979 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 4035 transitions, 129850 flow [2022-12-12 19:49:07,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 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) [2022-12-12 19:49:07,979 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:49:07,980 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:49:07,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 19:49:08,185 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,SelfDestructingSolverStorable14 [2022-12-12 19:49:08,185 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)] === [2022-12-12 19:49:08,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:49:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1271293751, now seen corresponding path program 2 times [2022-12-12 19:49:08,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:49:08,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436775048] [2022-12-12 19:49:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:49:08,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:49:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:49:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:49:08,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:49:08,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436775048] [2022-12-12 19:49:08,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436775048] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:49:08,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916604192] [2022-12-12 19:49:08,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 19:49:08,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:49:08,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:49:08,688 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) [2022-12-12 19:49:08,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 19:49:08,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 19:49:08,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:49:08,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-12 19:49:08,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:49:08,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 19:49:08,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 19:49:08,866 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-12 19:49:08,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-12 19:49:08,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-12 19:49:08,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 19:49:08,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 19:49:09,033 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-12 19:49:09,033 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 15 treesize of output 15 [2022-12-12 19:49:09,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-12-12 19:49:09,180 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 [2022-12-12 19:49:09,236 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 22 treesize of output 10 [2022-12-12 19:49:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:49:09,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:49:09,426 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_787 (Array Int Int))) (<= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_787) c_~X_0~0.base) .cse0))) (forall ((v_ArrVal_787 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_787) c_~X_0~0.base) .cse0) (+ c_~t_4~0 1 c_~s_2~0))))) is different from false [2022-12-12 19:49:09,434 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~X_0~0.offset 4)) (.cse0 (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))))) (and (forall ((v_ArrVal_787 (Array Int Int))) (<= (+ .cse0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_787) c_~X_0~0.base) .cse1))) (forall ((v_ArrVal_787 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_787) c_~X_0~0.base) .cse1) (+ .cse0 1 c_~s_2~0))))) is different from false [2022-12-12 19:49:09,452 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~X_0~0.offset 4)) (.cse1 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_787 (Array Int Int)) (v_ArrVal_786 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t2~0.base| v_ArrVal_786))) (<= (+ (select (select .cse0 c_~X_0~0.base) .cse1) c_~s_2~0) (select (select (store .cse0 |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_787) c_~X_0~0.base) .cse2)))) (forall ((v_ArrVal_787 (Array Int Int)) (v_ArrVal_786 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_thread1Thread1of1ForFork1_~#t2~0.base| v_ArrVal_786))) (< (select (select (store .cse3 |c_thread1Thread1of1ForFork1_~#t3~0.base| v_ArrVal_787) c_~X_0~0.base) .cse2) (+ (select (select .cse3 c_~X_0~0.base) .cse1) 1 c_~s_2~0)))))) is different from false [2022-12-12 19:49:14,147 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:49:14,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 49 [2022-12-12 19:49:14,154 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 38902 treesize of output 36790 [2022-12-12 19:49:15,543 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 32246 treesize of output 29942 [2022-12-12 19:49:15,640 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 29942 treesize of output 26358 [2022-12-12 19:49:15,734 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 26358 treesize of output 22262 [2022-12-12 19:49:15,879 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 22262 treesize of output 20982 Received shutdown request... [2022-12-12 20:02:15,809 WARN L249 SmtUtils]: Removed 1 from assertion stack [2022-12-12 20:02:15,810 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-12 20:02:15,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 20:02:15,836 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 [2022-12-12 20:02:15,836 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 20:02:16,015 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,SelfDestructingSolverStorable15 [2022-12-12 20:02:16,015 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-12-12 20:02:16,017 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2022-12-12 20:02:16,017 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-12 20:02:16,017 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-12 20:02:16,017 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-12 20:02:16,017 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-12 20:02:16,017 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2022-12-12 20:02:16,018 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-12 20:02:16,020 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 20:02:16,020 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 20:02:16,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 08:02:16 BasicIcfg [2022-12-12 20:02:16,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 20:02:16,022 INFO L158 Benchmark]: Toolchain (without parser) took 865342.96ms. Allocated memory was 190.8MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 167.5MB in the beginning and 470.3MB in the end (delta: -302.8MB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-12-12 20:02:16,022 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 127.9MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 20:02:16,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.27ms. Allocated memory is still 190.8MB. Free memory was 167.5MB in the beginning and 152.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 20:02:16,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.16ms. Allocated memory is still 190.8MB. Free memory was 152.3MB in the beginning and 149.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 20:02:16,023 INFO L158 Benchmark]: Boogie Preprocessor took 39.45ms. Allocated memory is still 190.8MB. Free memory was 149.7MB in the beginning and 148.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 20:02:16,023 INFO L158 Benchmark]: RCFGBuilder took 701.21ms. Allocated memory is still 190.8MB. Free memory was 148.0MB in the beginning and 148.9MB in the end (delta: -918.2kB). Peak memory consumption was 25.8MB. Max. memory is 8.0GB. [2022-12-12 20:02:16,023 INFO L158 Benchmark]: TraceAbstraction took 864324.34ms. Allocated memory was 190.8MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 147.9MB in the beginning and 470.3MB in the end (delta: -322.4MB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2022-12-12 20:02:16,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 127.9MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.27ms. Allocated memory is still 190.8MB. Free memory was 167.5MB in the beginning and 152.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.16ms. Allocated memory is still 190.8MB. Free memory was 152.3MB in the beginning and 149.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.45ms. Allocated memory is still 190.8MB. Free memory was 149.7MB in the beginning and 148.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 701.21ms. Allocated memory is still 190.8MB. Free memory was 148.0MB in the beginning and 148.9MB in the end (delta: -918.2kB). Peak memory consumption was 25.8MB. Max. memory is 8.0GB. * TraceAbstraction took 864324.34ms. Allocated memory was 190.8MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 147.9MB in the beginning and 470.3MB in the end (delta: -322.4MB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 169 PlacesBefore, 44 PlacesAfterwards, 170 TransitionsBefore, 37 TransitionsAfterwards, 2612 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 87 TrivialYvCompositions, 38 ConcurrentYvCompositions, 8 ChoiceCompositions, 133 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1521, independent: 1472, independent conditional: 1472, independent unconditional: 0, dependent: 49, dependent conditional: 49, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1521, independent: 1472, independent conditional: 0, independent unconditional: 1472, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1521, independent: 1472, independent conditional: 0, independent unconditional: 1472, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1521, independent: 1472, independent conditional: 0, independent unconditional: 1472, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1334, independent: 1310, independent conditional: 0, independent unconditional: 1310, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1334, independent: 1302, independent conditional: 0, independent unconditional: 1302, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 58, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1521, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 1334, unknown conditional: 0, unknown unconditional: 1334] , Statistics on independence cache: Total cache size (in pairs): 2003, Positive cache size: 1979, Positive conditional cache size: 0, Positive unconditional cache size: 1979, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - 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 analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - 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 analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - 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 analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - 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 analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - 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 analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - 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 analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 231 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 1.2s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 864.2s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 56.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 20 mSolverCounterUnknown, 2678 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2678 mSDsluCounter, 139 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 586 IncrementalHoareTripleChecker+Unchecked, 102 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8345 IncrementalHoareTripleChecker+Invalid, 9039 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 37 mSDtfsCounter, 8345 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 935 GetRequests, 607 SyntacticMatches, 36 SemanticMatches, 292 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129850occurred in iteration=15, InterpolantAutomatonStates: 157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 12418 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 851 NumberOfCodeBlocks, 851 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1180 ConstructedInterpolants, 34 QuantifiedInterpolants, 10168 SizeOfPredicates, 195 NumberOfNonLiveVariables, 3658 ConjunctsInSsa, 444 ConjunctsInUnsatCore, 37 InterpolantComputations, 6 PerfectInterpolantSequences, 79/143 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