/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-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 02:15:21,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 02:15:21,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 02:15:21,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 02:15:21,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 02:15:21,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 02:15:21,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 02:15:21,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 02:15:21,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 02:15:21,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 02:15:21,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 02:15:21,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 02:15:21,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 02:15:21,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 02:15:21,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 02:15:21,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 02:15:21,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 02:15:21,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 02:15:21,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 02:15:21,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 02:15:21,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 02:15:21,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 02:15:21,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 02:15:21,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 02:15:21,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 02:15:21,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 02:15:21,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 02:15:21,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 02:15:21,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 02:15:21,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 02:15:21,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 02:15:21,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 02:15:21,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 02:15:21,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 02:15:21,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 02:15:21,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 02:15:21,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 02:15:21,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 02:15:21,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 02:15:21,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 02:15:21,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 02:15:21,983 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-RepeatedSemanticLbe.epf [2022-12-06 02:15:22,010 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 02:15:22,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 02:15:22,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 02:15:22,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 02:15:22,013 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 02:15:22,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 02:15:22,014 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 02:15:22,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 02:15:22,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 02:15:22,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 02:15:22,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 02:15:22,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 02:15:22,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 02:15:22,016 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 02:15:22,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 02:15:22,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 02:15:22,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 02:15:22,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 02:15:22,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 02:15:22,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 02:15:22,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 02:15:22,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 02:15:22,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 02:15:22,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 02:15:22,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 02:15:22,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 02:15:22,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 02:15:22,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 02:15:22,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 02:15:22,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 02:15:22,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 02:15:22,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 02:15:22,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 02:15:22,352 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 02:15:22,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-06 02:15:23,558 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 02:15:23,808 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 02:15:23,809 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-06 02:15:23,814 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61e7edf6b/5adea4b2ce804b5a8f8b5e0862164659/FLAGb70acd704 [2022-12-06 02:15:23,825 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61e7edf6b/5adea4b2ce804b5a8f8b5e0862164659 [2022-12-06 02:15:23,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 02:15:23,829 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 02:15:23,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 02:15:23,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 02:15:23,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 02:15:23,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 02:15:23" (1/1) ... [2022-12-06 02:15:23,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651cd179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:23, skipping insertion in model container [2022-12-06 02:15:23,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 02:15:23" (1/1) ... [2022-12-06 02:15:23,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 02:15:23,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 02:15:24,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,047 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,062 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-1-dsl.wvr.c[4372,4385] [2022-12-06 02:15:24,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 02:15:24,090 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 02:15:24,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:15:24,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:15:24,148 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-1-dsl.wvr.c[4372,4385] [2022-12-06 02:15:24,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 02:15:24,170 INFO L208 MainTranslator]: Completed translation [2022-12-06 02:15:24,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24 WrapperNode [2022-12-06 02:15:24,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 02:15:24,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 02:15:24,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 02:15:24,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 02:15:24,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,246 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 289 [2022-12-06 02:15:24,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 02:15:24,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 02:15:24,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 02:15:24,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 02:15:24,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,293 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 02:15:24,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 02:15:24,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 02:15:24,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 02:15:24,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (1/1) ... [2022-12-06 02:15:24,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 02:15:24,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:15:24,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 02:15:24,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 02:15:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 02:15:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 02:15:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 02:15:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 02:15:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 02:15:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 02:15:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 02:15:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 02:15:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 02:15:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 02:15:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-06 02:15:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-06 02:15:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 02:15:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-06 02:15:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-06 02:15:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-06 02:15:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-06 02:15:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 02:15:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 02:15:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 02:15:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 02:15:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 02:15:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 02:15:24,382 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 02:15:24,507 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 02:15:24,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 02:15:24,973 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 02:15:25,185 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 02:15:25,186 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-06 02:15:25,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 02:15:25 BoogieIcfgContainer [2022-12-06 02:15:25,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 02:15:25,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 02:15:25,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 02:15:25,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 02:15:25,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 02:15:23" (1/3) ... [2022-12-06 02:15:25,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60750c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 02:15:25, skipping insertion in model container [2022-12-06 02:15:25,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:15:24" (2/3) ... [2022-12-06 02:15:25,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60750c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 02:15:25, skipping insertion in model container [2022-12-06 02:15:25,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 02:15:25" (3/3) ... [2022-12-06 02:15:25,201 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-12-06 02:15:25,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 02:15:25,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 02:15:25,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 02:15:25,337 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-06 02:15:25,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 248 transitions, 568 flow [2022-12-06 02:15:25,495 INFO L130 PetriNetUnfolder]: 18/220 cut-off events. [2022-12-06 02:15:25,495 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 02:15:25,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 220 events. 18/220 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2022-12-06 02:15:25,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 248 transitions, 568 flow [2022-12-06 02:15:25,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 212 transitions, 472 flow [2022-12-06 02:15:25,518 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:15:25,544 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 212 transitions, 472 flow [2022-12-06 02:15:25,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 212 transitions, 472 flow [2022-12-06 02:15:25,619 INFO L130 PetriNetUnfolder]: 18/212 cut-off events. [2022-12-06 02:15:25,619 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 02:15:25,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 212 events. 18/212 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 280 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2022-12-06 02:15:25,633 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 212 transitions, 472 flow [2022-12-06 02:15:25,633 INFO L188 LiptonReduction]: Number of co-enabled transitions 7312 [2022-12-06 02:15:33,484 INFO L203 LiptonReduction]: Total number of compositions: 151 [2022-12-06 02:15:33,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 02:15:33,513 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=REPEATED_LIPTON_PN, 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;@40c07d2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 02:15:33,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-06 02:15:33,531 INFO L130 PetriNetUnfolder]: 9/60 cut-off events. [2022-12-06 02:15:33,531 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 02:15:33,531 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:15:33,532 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:15:33,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:15:33,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:15:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash -482795550, now seen corresponding path program 1 times [2022-12-06 02:15:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:15:33,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990843955] [2022-12-06 02:15:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:15:33,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:15:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:15:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:15:34,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:15:34,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990843955] [2022-12-06 02:15:34,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990843955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:15:34,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:15:34,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:15:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913254513] [2022-12-06 02:15:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:15:34,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:15:34,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:15:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:15:34,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:15:34,175 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-06 02:15:34,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:15:34,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:15:34,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-06 02:15:34,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:15:38,108 INFO L130 PetriNetUnfolder]: 28944/36855 cut-off events. [2022-12-06 02:15:38,108 INFO L131 PetriNetUnfolder]: For 4966/4966 co-relation queries the response was YES. [2022-12-06 02:15:38,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79913 conditions, 36855 events. 28944/36855 cut-off events. For 4966/4966 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 169829 event pairs, 12531 based on Foata normal form. 1/28136 useless extension candidates. Maximal degree in co-relation 78348. Up to 14539 conditions per place. [2022-12-06 02:15:38,418 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 115 selfloop transitions, 8 changer transitions 1/138 dead transitions. [2022-12-06 02:15:38,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 138 transitions, 653 flow [2022-12-06 02:15:38,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 02:15:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 02:15:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2022-12-06 02:15:38,433 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7418032786885246 [2022-12-06 02:15:38,437 INFO L294 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2022-12-06 02:15:38,439 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:15:38,440 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 138 transitions, 653 flow [2022-12-06 02:15:38,664 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 138 transitions, 653 flow [2022-12-06 02:15:38,664 INFO L188 LiptonReduction]: Number of co-enabled transitions 1372 [2022-12-06 02:15:39,375 INFO L203 LiptonReduction]: Total number of compositions: 12 [2022-12-06 02:15:39,377 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 940 [2022-12-06 02:15:39,377 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 129 transitions, 635 flow [2022-12-06 02:15:39,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:15:39,377 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:15:39,377 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:15:39,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 02:15:39,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:15:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:15:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1381081523, now seen corresponding path program 1 times [2022-12-06 02:15:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:15:39,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099014625] [2022-12-06 02:15:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:15:39,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:15:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:15:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:15:39,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:15:39,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099014625] [2022-12-06 02:15:39,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099014625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:15:39,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:15:39,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:15:39,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746217341] [2022-12-06 02:15:39,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:15:39,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:15:39,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:15:39,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:15:39,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:15:39,580 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 55 [2022-12-06 02:15:39,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 129 transitions, 635 flow. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:15:39,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:15:39,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 55 [2022-12-06 02:15:39,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:15:45,282 INFO L130 PetriNetUnfolder]: 56926/71594 cut-off events. [2022-12-06 02:15:45,282 INFO L131 PetriNetUnfolder]: For 10278/10278 co-relation queries the response was YES. [2022-12-06 02:15:45,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224026 conditions, 71594 events. 56926/71594 cut-off events. For 10278/10278 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 331602 event pairs, 24842 based on Foata normal form. 1/55508 useless extension candidates. Maximal degree in co-relation 220034. Up to 32176 conditions per place. [2022-12-06 02:15:45,812 INFO L137 encePairwiseOnDemand]: 47/55 looper letters, 200 selfloop transitions, 11 changer transitions 2/213 dead transitions. [2022-12-06 02:15:45,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 213 transitions, 1461 flow [2022-12-06 02:15:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 02:15:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 02:15:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2022-12-06 02:15:45,815 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.65 [2022-12-06 02:15:45,816 INFO L294 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2022-12-06 02:15:45,817 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:15:45,817 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 213 transitions, 1461 flow [2022-12-06 02:15:46,101 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 213 transitions, 1461 flow [2022-12-06 02:15:46,102 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:15:46,121 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:15:46,122 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 306 [2022-12-06 02:15:46,122 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 213 transitions, 1461 flow [2022-12-06 02:15:46,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:15:46,122 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:15:46,123 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:15:46,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 02:15:46,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:15:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:15:46,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1914505863, now seen corresponding path program 1 times [2022-12-06 02:15:46,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:15:46,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640040889] [2022-12-06 02:15:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:15:46,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:15:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:15:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:15:46,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:15:46,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640040889] [2022-12-06 02:15:46,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640040889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:15:46,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:15:46,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 02:15:46,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934990216] [2022-12-06 02:15:46,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:15:46,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 02:15:46,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:15:46,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 02:15:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 02:15:46,335 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 55 [2022-12-06 02:15:46,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 213 transitions, 1461 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:15:46,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:15:46,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 55 [2022-12-06 02:15:46,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:15:53,606 INFO L130 PetriNetUnfolder]: 74809/95147 cut-off events. [2022-12-06 02:15:53,607 INFO L131 PetriNetUnfolder]: For 14692/14692 co-relation queries the response was YES. [2022-12-06 02:15:53,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393829 conditions, 95147 events. 74809/95147 cut-off events. For 14692/14692 co-relation queries the response was YES. Maximal size of possible extension queue 1943. Compared 469904 event pairs, 31480 based on Foata normal form. 0/75261 useless extension candidates. Maximal degree in co-relation 290404. Up to 71595 conditions per place. [2022-12-06 02:15:54,221 INFO L137 encePairwiseOnDemand]: 49/55 looper letters, 352 selfloop transitions, 5 changer transitions 22/379 dead transitions. [2022-12-06 02:15:54,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 379 transitions, 3358 flow [2022-12-06 02:15:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 02:15:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 02:15:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2022-12-06 02:15:54,223 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4618181818181818 [2022-12-06 02:15:54,223 INFO L294 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2022-12-06 02:15:54,224 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:15:54,224 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 379 transitions, 3358 flow [2022-12-06 02:15:54,592 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 379 transitions, 3358 flow [2022-12-06 02:15:54,592 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:15:56,908 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 02:15:56,909 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2686 [2022-12-06 02:15:56,909 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 378 transitions, 3350 flow [2022-12-06 02:15:56,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:15:56,910 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:15:56,910 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:15:56,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 02:15:56,910 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:15:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:15:56,911 INFO L85 PathProgramCache]: Analyzing trace with hash 189967197, now seen corresponding path program 1 times [2022-12-06 02:15:56,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:15:56,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376573335] [2022-12-06 02:15:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:15:56,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:15:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:15:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:15:57,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:15:57,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376573335] [2022-12-06 02:15:57,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376573335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:15:57,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:15:57,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:15:57,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480654655] [2022-12-06 02:15:57,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:15:57,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:15:57,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:15:57,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:15:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:15:57,177 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 56 [2022-12-06 02:15:57,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 378 transitions, 3350 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:15:57,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:15:57,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 56 [2022-12-06 02:15:57,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:16:03,508 INFO L130 PetriNetUnfolder]: 60357/77353 cut-off events. [2022-12-06 02:16:03,508 INFO L131 PetriNetUnfolder]: For 12397/12397 co-relation queries the response was YES. [2022-12-06 02:16:03,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397873 conditions, 77353 events. 60357/77353 cut-off events. For 12397/12397 co-relation queries the response was YES. Maximal size of possible extension queue 1678. Compared 390998 event pairs, 12840 based on Foata normal form. 0/62978 useless extension candidates. Maximal degree in co-relation 349314. Up to 69303 conditions per place. [2022-12-06 02:16:04,099 INFO L137 encePairwiseOnDemand]: 49/56 looper letters, 341 selfloop transitions, 10 changer transitions 115/466 dead transitions. [2022-12-06 02:16:04,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 466 transitions, 5034 flow [2022-12-06 02:16:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 02:16:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 02:16:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2022-12-06 02:16:04,100 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2022-12-06 02:16:04,101 INFO L294 CegarLoopForPetriNet]: 71 programPoint places, 4 predicate places. [2022-12-06 02:16:04,102 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:16:04,102 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 466 transitions, 5034 flow [2022-12-06 02:16:04,615 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 466 transitions, 5034 flow [2022-12-06 02:16:04,616 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:16:04,635 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:16:04,638 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 537 [2022-12-06 02:16:04,639 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 466 transitions, 5034 flow [2022-12-06 02:16:04,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:16:04,639 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:16:04,639 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:16:04,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 02:16:04,639 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:16:04,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:16:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1691832627, now seen corresponding path program 1 times [2022-12-06 02:16:04,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:16:04,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493535392] [2022-12-06 02:16:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:16:04,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:16:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:16:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:16:04,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:16:04,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493535392] [2022-12-06 02:16:04,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493535392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:16:04,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:16:04,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 02:16:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598534928] [2022-12-06 02:16:04,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:16:04,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 02:16:04,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:16:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 02:16:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 02:16:04,845 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 56 [2022-12-06 02:16:04,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 466 transitions, 5034 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:16:04,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:16:04,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 56 [2022-12-06 02:16:04,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:16:13,886 INFO L130 PetriNetUnfolder]: 77352/100018 cut-off events. [2022-12-06 02:16:13,886 INFO L131 PetriNetUnfolder]: For 17115/17115 co-relation queries the response was YES. [2022-12-06 02:16:14,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615213 conditions, 100018 events. 77352/100018 cut-off events. For 17115/17115 co-relation queries the response was YES. Maximal size of possible extension queue 2087. Compared 531930 event pairs, 16182 based on Foata normal form. 0/82732 useless extension candidates. Maximal degree in co-relation 417392. Up to 91968 conditions per place. [2022-12-06 02:16:14,583 INFO L137 encePairwiseOnDemand]: 49/56 looper letters, 573 selfloop transitions, 7 changer transitions 150/730 dead transitions. [2022-12-06 02:16:14,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 730 transitions, 9326 flow [2022-12-06 02:16:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 02:16:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 02:16:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2022-12-06 02:16:14,585 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2022-12-06 02:16:14,585 INFO L294 CegarLoopForPetriNet]: 71 programPoint places, 8 predicate places. [2022-12-06 02:16:14,586 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:16:14,586 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 730 transitions, 9326 flow [2022-12-06 02:16:15,151 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 730 transitions, 9326 flow [2022-12-06 02:16:15,151 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:16:17,795 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 02:16:17,796 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 3211 [2022-12-06 02:16:17,796 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 729 transitions, 9314 flow [2022-12-06 02:16:17,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:16:17,797 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:16:17,797 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:16:17,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 02:16:17,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:16:17,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:16:17,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1633564775, now seen corresponding path program 1 times [2022-12-06 02:16:17,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:16:17,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57371319] [2022-12-06 02:16:17,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:16:17,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:16:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:16:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:16:18,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:16:18,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57371319] [2022-12-06 02:16:18,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57371319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:16:18,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:16:18,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:16:18,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260545531] [2022-12-06 02:16:18,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:16:18,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:16:18,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:16:18,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:16:18,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:16:18,034 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 57 [2022-12-06 02:16:18,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 729 transitions, 9314 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:16:18,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:16:18,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 57 [2022-12-06 02:16:18,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:16:27,151 INFO L130 PetriNetUnfolder]: 66080/85404 cut-off events. [2022-12-06 02:16:27,152 INFO L131 PetriNetUnfolder]: For 14824/14824 co-relation queries the response was YES. [2022-12-06 02:16:27,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610800 conditions, 85404 events. 66080/85404 cut-off events. For 14824/14824 co-relation queries the response was YES. Maximal size of possible extension queue 1818. Compared 445984 event pairs, 14224 based on Foata normal form. 0/70449 useless extension candidates. Maximal degree in co-relation 485470. Up to 77354 conditions per place. [2022-12-06 02:16:27,705 INFO L137 encePairwiseOnDemand]: 51/57 looper letters, 351 selfloop transitions, 0 changer transitions 283/634 dead transitions. [2022-12-06 02:16:27,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 634 transitions, 9390 flow [2022-12-06 02:16:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 02:16:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 02:16:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2022-12-06 02:16:27,706 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2022-12-06 02:16:27,707 INFO L294 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2022-12-06 02:16:27,708 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:16:27,708 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 634 transitions, 9390 flow [2022-12-06 02:16:28,221 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 634 transitions, 9390 flow [2022-12-06 02:16:28,221 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:16:28,242 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:16:28,242 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 535 [2022-12-06 02:16:28,243 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 634 transitions, 9390 flow [2022-12-06 02:16:28,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:16:28,243 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:16:28,243 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:16:28,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 02:16:28,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:16:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:16:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1994074531, now seen corresponding path program 1 times [2022-12-06 02:16:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:16:28,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651702130] [2022-12-06 02:16:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:16:28,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:16:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:16:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:16:28,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:16:28,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651702130] [2022-12-06 02:16:28,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651702130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:16:28,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:16:28,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:16:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121386155] [2022-12-06 02:16:28,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:16:28,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:16:28,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:16:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:16:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:16:28,462 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 57 [2022-12-06 02:16:28,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 634 transitions, 9390 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:16:28,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:16:28,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 57 [2022-12-06 02:16:28,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:16:35,367 INFO L130 PetriNetUnfolder]: 52713/68143 cut-off events. [2022-12-06 02:16:35,368 INFO L131 PetriNetUnfolder]: For 11815/11815 co-relation queries the response was YES. [2022-12-06 02:16:35,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555192 conditions, 68143 events. 52713/68143 cut-off events. For 11815/11815 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 347170 event pairs, 9652 based on Foata normal form. 0/57620 useless extension candidates. Maximal degree in co-relation 418577. Up to 60093 conditions per place. [2022-12-06 02:16:35,844 INFO L137 encePairwiseOnDemand]: 50/57 looper letters, 386 selfloop transitions, 9 changer transitions 281/676 dead transitions. [2022-12-06 02:16:35,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 676 transitions, 11338 flow [2022-12-06 02:16:35,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 02:16:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 02:16:35,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2022-12-06 02:16:35,845 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2022-12-06 02:16:35,845 INFO L294 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2022-12-06 02:16:35,846 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:16:35,846 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 676 transitions, 11338 flow [2022-12-06 02:16:36,220 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 676 transitions, 11338 flow [2022-12-06 02:16:36,220 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:16:36,334 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:16:36,334 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 489 [2022-12-06 02:16:36,334 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 676 transitions, 11338 flow [2022-12-06 02:16:36,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:16:36,335 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:16:36,335 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:16:36,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 02:16:36,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:16:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:16:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1009063906, now seen corresponding path program 1 times [2022-12-06 02:16:36,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:16:36,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61736648] [2022-12-06 02:16:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:16:36,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:16:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:16:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:16:36,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:16:36,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61736648] [2022-12-06 02:16:36,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61736648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:16:36,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:16:36,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 02:16:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939209241] [2022-12-06 02:16:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:16:36,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 02:16:36,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:16:36,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 02:16:36,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 02:16:36,646 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 57 [2022-12-06 02:16:36,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 676 transitions, 11338 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:16:36,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:16:36,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 57 [2022-12-06 02:16:36,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:16:42,605 INFO L130 PetriNetUnfolder]: 42755/55591 cut-off events. [2022-12-06 02:16:42,605 INFO L131 PetriNetUnfolder]: For 9310/9310 co-relation queries the response was YES. [2022-12-06 02:16:42,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508513 conditions, 55591 events. 42755/55591 cut-off events. For 9310/9310 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 279159 event pairs, 6854 based on Foata normal form. 0/48460 useless extension candidates. Maximal degree in co-relation 356270. Up to 47541 conditions per place. [2022-12-06 02:16:43,126 INFO L137 encePairwiseOnDemand]: 51/57 looper letters, 470 selfloop transitions, 22 changer transitions 281/773 dead transitions. [2022-12-06 02:16:43,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 773 transitions, 14430 flow [2022-12-06 02:16:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 02:16:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 02:16:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2022-12-06 02:16:43,127 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2022-12-06 02:16:43,128 INFO L294 CegarLoopForPetriNet]: 71 programPoint places, 16 predicate places. [2022-12-06 02:16:43,129 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:16:43,129 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 773 transitions, 14430 flow [2022-12-06 02:16:43,438 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 773 transitions, 14430 flow [2022-12-06 02:16:43,438 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:16:43,453 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:16:43,456 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 328 [2022-12-06 02:16:43,456 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 773 transitions, 14430 flow [2022-12-06 02:16:43,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:16:43,456 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:16:43,456 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:16:43,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 02:16:43,457 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:16:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:16:43,458 INFO L85 PathProgramCache]: Analyzing trace with hash -528628813, now seen corresponding path program 1 times [2022-12-06 02:16:43,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:16:43,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812363843] [2022-12-06 02:16:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:16:43,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:16:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:16:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:16:44,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:16:44,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812363843] [2022-12-06 02:16:44,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812363843] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:16:44,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806890714] [2022-12-06 02:16:44,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:16:44,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:16:44,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:16:44,755 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)