/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:57:19,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:57:19,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:57:19,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:57:19,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:57:19,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:57:19,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:57:19,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:57:19,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:57:19,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:57:19,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:57:19,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:57:19,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:57:19,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:57:19,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:57:19,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:57:19,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:57:19,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:57:19,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:57:19,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:57:19,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:57:19,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:57:19,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:57:19,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:57:19,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 18:57:19,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 18:57:19,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 18:57:19,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 18:57:19,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 18:57:19,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 18:57:19,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:57:19,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:57:19,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:57:19,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:57:19,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:57:19,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:57:19,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:57:19,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:57:19,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:57:19,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:57:19,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:57:19,983 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-NoLbe.epf [2022-12-05 18:57:20,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:57:20,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:57:20,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:57:20,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:57:20,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:57:20,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:57:20,015 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:57:20,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:57:20,016 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:57:20,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:57:20,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:57:20,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:57:20,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:57:20,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:57:20,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:57:20,017 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:57:20,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:57:20,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:57:20,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:57:20,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:57:20,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:57:20,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:57:20,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:57:20,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:57:20,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:57:20,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:57:20,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:57:20,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:57:20,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:57:20,020 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:57:20,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:57:20,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:57:20,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:57:20,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:57:20,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:57:20,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:57:20,354 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:57:20,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2022-12-05 18:57:21,417 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:57:21,657 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:57:21,657 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2022-12-05 18:57:21,665 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9fc9d2c4/f64ac13305714044a8d154c4c667b783/FLAGcedb5814b [2022-12-05 18:57:21,684 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9fc9d2c4/f64ac13305714044a8d154c4c667b783 [2022-12-05 18:57:21,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:57:21,688 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:57:21,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:57:21,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:57:21,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:57:21,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:21,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7ff528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21, skipping insertion in model container [2022-12-05 18:57:21,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:21,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:57:21,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:57:21,869 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/chl-node-subst.wvr.c[3996,4009] [2022-12-05 18:57:21,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:57:21,891 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:57:21,916 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/chl-node-subst.wvr.c[3996,4009] [2022-12-05 18:57:21,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:57:21,935 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:57:21,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21 WrapperNode [2022-12-05 18:57:21,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:57:21,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:57:21,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:57:21,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:57:21,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:21,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,004 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-12-05 18:57:22,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:57:22,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:57:22,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:57:22,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:57:22,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,045 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:57:22,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:57:22,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:57:22,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:57:22,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (1/1) ... [2022-12-05 18:57:22,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:57:22,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:57:22,100 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) [2022-12-05 18:57:22,127 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 [2022-12-05 18:57:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:57:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:57:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:57:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:57:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 18:57:22,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 18:57:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 18:57:22,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 18:57:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 18:57:22,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 18:57:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:57:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 18:57:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:57:22,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:57:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:57:22,148 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:57:22,337 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:57:22,339 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:57:22,896 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:57:22,911 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:57:22,911 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-05 18:57:22,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:57:22 BoogieIcfgContainer [2022-12-05 18:57:22,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:57:22,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:57:22,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:57:22,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:57:22,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:57:21" (1/3) ... [2022-12-05 18:57:22,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139fb1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:57:22, skipping insertion in model container [2022-12-05 18:57:22,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:57:21" (2/3) ... [2022-12-05 18:57:22,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139fb1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:57:22, skipping insertion in model container [2022-12-05 18:57:22,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:57:22" (3/3) ... [2022-12-05 18:57:22,930 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-12-05 18:57:22,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:57:22,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 18:57:22,951 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:57:23,091 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 18:57:23,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 483 transitions, 990 flow [2022-12-05 18:57:23,380 INFO L130 PetriNetUnfolder]: 41/480 cut-off events. [2022-12-05 18:57:23,380 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 18:57:23,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 480 events. 41/480 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 632 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 406. Up to 2 conditions per place. [2022-12-05 18:57:23,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 483 transitions, 990 flow [2022-12-05 18:57:23,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 439 places, 470 transitions, 958 flow [2022-12-05 18:57:23,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:57:23,418 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b829d77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:57:23,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 18:57:23,509 INFO L130 PetriNetUnfolder]: 41/469 cut-off events. [2022-12-05 18:57:23,509 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 18:57:23,510 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:23,511 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:23,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash 323553240, now seen corresponding path program 1 times [2022-12-05 18:57:23,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:23,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249648789] [2022-12-05 18:57:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:57:24,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:24,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249648789] [2022-12-05 18:57:24,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249648789] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:57:24,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:57:24,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:57:24,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985394751] [2022-12-05 18:57:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:24,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:57:24,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:57:24,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:57:24,111 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 483 [2022-12-05 18:57:24,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 470 transitions, 958 flow. Second operand has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 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) [2022-12-05 18:57:24,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:24,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 483 [2022-12-05 18:57:24,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:57:24,286 INFO L130 PetriNetUnfolder]: 30/548 cut-off events. [2022-12-05 18:57:24,286 INFO L131 PetriNetUnfolder]: For 54/56 co-relation queries the response was YES. [2022-12-05 18:57:24,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 548 events. 30/548 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1287 event pairs, 10 based on Foata normal form. 60/564 useless extension candidates. Maximal degree in co-relation 382. Up to 35 conditions per place. [2022-12-05 18:57:24,294 INFO L137 encePairwiseOnDemand]: 450/483 looper letters, 14 selfloop transitions, 3 changer transitions 17/445 dead transitions. [2022-12-05 18:57:24,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 445 transitions, 948 flow [2022-12-05 18:57:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:57:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:57:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1371 transitions. [2022-12-05 18:57:24,311 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9461697722567288 [2022-12-05 18:57:24,312 INFO L175 Difference]: Start difference. First operand has 439 places, 470 transitions, 958 flow. Second operand 3 states and 1371 transitions. [2022-12-05 18:57:24,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 445 transitions, 948 flow [2022-12-05 18:57:24,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 445 transitions, 932 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 18:57:24,326 INFO L231 Difference]: Finished difference. Result has 437 places, 426 transitions, 876 flow [2022-12-05 18:57:24,328 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=876, PETRI_PLACES=437, PETRI_TRANSITIONS=426} [2022-12-05 18:57:24,334 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -2 predicate places. [2022-12-05 18:57:24,334 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 426 transitions, 876 flow [2022-12-05 18:57:24,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 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) [2022-12-05 18:57:24,335 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:24,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:57:24,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1370301688, now seen corresponding path program 1 times [2022-12-05 18:57:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:24,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138311545] [2022-12-05 18:57:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:57:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:24,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138311545] [2022-12-05 18:57:24,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138311545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:57:24,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:57:24,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:57:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841666257] [2022-12-05 18:57:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:24,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:57:24,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:57:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:57:24,573 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 483 [2022-12-05 18:57:24,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 426 transitions, 876 flow. Second operand has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 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) [2022-12-05 18:57:24,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:24,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 483 [2022-12-05 18:57:24,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:57:24,708 INFO L130 PetriNetUnfolder]: 34/641 cut-off events. [2022-12-05 18:57:24,709 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-05 18:57:24,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 641 events. 34/641 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2101 event pairs, 10 based on Foata normal form. 0/606 useless extension candidates. Maximal degree in co-relation 653. Up to 35 conditions per place. [2022-12-05 18:57:24,714 INFO L137 encePairwiseOnDemand]: 479/483 looper letters, 14 selfloop transitions, 3 changer transitions 0/430 dead transitions. [2022-12-05 18:57:24,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 430 transitions, 920 flow [2022-12-05 18:57:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:57:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:57:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2022-12-05 18:57:24,725 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9233954451345756 [2022-12-05 18:57:24,726 INFO L175 Difference]: Start difference. First operand has 437 places, 426 transitions, 876 flow. Second operand 3 states and 1338 transitions. [2022-12-05 18:57:24,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 430 transitions, 920 flow [2022-12-05 18:57:24,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 430 transitions, 914 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 18:57:24,734 INFO L231 Difference]: Finished difference. Result has 422 places, 428 transitions, 892 flow [2022-12-05 18:57:24,734 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=892, PETRI_PLACES=422, PETRI_TRANSITIONS=428} [2022-12-05 18:57:24,735 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -17 predicate places. [2022-12-05 18:57:24,735 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 428 transitions, 892 flow [2022-12-05 18:57:24,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 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) [2022-12-05 18:57:24,737 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:24,737 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:24,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:57:24,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:24,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:24,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1687311784, now seen corresponding path program 1 times [2022-12-05 18:57:24,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:24,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943556287] [2022-12-05 18:57:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:24,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:57:24,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:24,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943556287] [2022-12-05 18:57:24,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943556287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:57:24,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:57:24,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:57:24,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026312122] [2022-12-05 18:57:24,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:24,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:57:24,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:24,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:57:24,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:57:24,917 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 483 [2022-12-05 18:57:24,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 428 transitions, 892 flow. Second operand has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 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) [2022-12-05 18:57:24,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:24,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 483 [2022-12-05 18:57:24,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:57:25,048 INFO L130 PetriNetUnfolder]: 32/597 cut-off events. [2022-12-05 18:57:25,048 INFO L131 PetriNetUnfolder]: For 13/25 co-relation queries the response was YES. [2022-12-05 18:57:25,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 597 events. 32/597 cut-off events. For 13/25 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1707 event pairs, 10 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 640. Up to 35 conditions per place. [2022-12-05 18:57:25,055 INFO L137 encePairwiseOnDemand]: 479/483 looper letters, 14 selfloop transitions, 3 changer transitions 0/432 dead transitions. [2022-12-05 18:57:25,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 432 transitions, 936 flow [2022-12-05 18:57:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:57:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:57:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2022-12-05 18:57:25,058 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9233954451345756 [2022-12-05 18:57:25,059 INFO L175 Difference]: Start difference. First operand has 422 places, 428 transitions, 892 flow. Second operand 3 states and 1338 transitions. [2022-12-05 18:57:25,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 432 transitions, 936 flow [2022-12-05 18:57:25,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 432 transitions, 930 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 18:57:25,066 INFO L231 Difference]: Finished difference. Result has 424 places, 430 transitions, 908 flow [2022-12-05 18:57:25,067 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=908, PETRI_PLACES=424, PETRI_TRANSITIONS=430} [2022-12-05 18:57:25,068 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -15 predicate places. [2022-12-05 18:57:25,068 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 430 transitions, 908 flow [2022-12-05 18:57:25,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 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) [2022-12-05 18:57:25,069 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:25,070 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:25,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:57:25,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:25,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash 149272968, now seen corresponding path program 1 times [2022-12-05 18:57:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:25,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171444885] [2022-12-05 18:57:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:25,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:57:25,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:25,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171444885] [2022-12-05 18:57:25,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171444885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:57:25,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:57:25,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:57:25,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123758959] [2022-12-05 18:57:25,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:25,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:57:25,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:25,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:57:25,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:57:25,679 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 483 [2022-12-05 18:57:25,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 430 transitions, 908 flow. Second operand has 8 states, 8 states have (on average 335.375) internal successors, (2683), 8 states have internal predecessors, (2683), 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) [2022-12-05 18:57:25,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:25,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 483 [2022-12-05 18:57:25,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:57:26,113 INFO L130 PetriNetUnfolder]: 71/994 cut-off events. [2022-12-05 18:57:26,114 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-05 18:57:26,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 994 events. 71/994 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4821 event pairs, 39 based on Foata normal form. 0/947 useless extension candidates. Maximal degree in co-relation 1247. Up to 159 conditions per place. [2022-12-05 18:57:26,126 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 106 selfloop transitions, 11 changer transitions 0/434 dead transitions. [2022-12-05 18:57:26,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 434 transitions, 1150 flow [2022-12-05 18:57:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 18:57:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 18:57:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3025 transitions. [2022-12-05 18:57:26,132 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.695882217621348 [2022-12-05 18:57:26,132 INFO L175 Difference]: Start difference. First operand has 424 places, 430 transitions, 908 flow. Second operand 9 states and 3025 transitions. [2022-12-05 18:57:26,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 434 transitions, 1150 flow [2022-12-05 18:57:26,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 434 transitions, 1144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 18:57:26,143 INFO L231 Difference]: Finished difference. Result has 431 places, 431 transitions, 932 flow [2022-12-05 18:57:26,144 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=932, PETRI_PLACES=431, PETRI_TRANSITIONS=431} [2022-12-05 18:57:26,144 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -8 predicate places. [2022-12-05 18:57:26,144 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 431 transitions, 932 flow [2022-12-05 18:57:26,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 335.375) internal successors, (2683), 8 states have internal predecessors, (2683), 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) [2022-12-05 18:57:26,146 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:26,146 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:26,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 18:57:26,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1395849293, now seen corresponding path program 1 times [2022-12-05 18:57:26,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:26,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940136960] [2022-12-05 18:57:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:26,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:57:26,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:26,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940136960] [2022-12-05 18:57:26,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940136960] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:57:26,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984152869] [2022-12-05 18:57:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:26,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:57:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:57:26,535 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) [2022-12-05 18:57:26,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 18:57:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:26,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 18:57:26,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:57:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:57:26,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:57:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:57:27,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984152869] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 18:57:27,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 18:57:27,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-05 18:57:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205769152] [2022-12-05 18:57:27,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:27,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 18:57:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 18:57:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-05 18:57:27,234 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 483 [2022-12-05 18:57:27,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 431 transitions, 932 flow. Second operand has 9 states, 9 states have (on average 375.0) internal successors, (3375), 9 states have internal predecessors, (3375), 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) [2022-12-05 18:57:27,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:27,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 483 [2022-12-05 18:57:27,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:57:27,580 INFO L130 PetriNetUnfolder]: 71/995 cut-off events. [2022-12-05 18:57:27,580 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-05 18:57:27,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 995 events. 71/995 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4819 event pairs, 39 based on Foata normal form. 0/940 useless extension candidates. Maximal degree in co-relation 1212. Up to 130 conditions per place. [2022-12-05 18:57:27,595 INFO L137 encePairwiseOnDemand]: 465/483 looper letters, 71 selfloop transitions, 17 changer transitions 0/433 dead transitions. [2022-12-05 18:57:27,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 433 transitions, 1112 flow [2022-12-05 18:57:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 18:57:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 18:57:27,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4136 transitions. [2022-12-05 18:57:27,602 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7784679089026915 [2022-12-05 18:57:27,603 INFO L175 Difference]: Start difference. First operand has 431 places, 431 transitions, 932 flow. Second operand 11 states and 4136 transitions. [2022-12-05 18:57:27,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 433 transitions, 1112 flow [2022-12-05 18:57:27,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 433 transitions, 1092 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-05 18:57:27,612 INFO L231 Difference]: Finished difference. Result has 437 places, 433 transitions, 966 flow [2022-12-05 18:57:27,613 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=966, PETRI_PLACES=437, PETRI_TRANSITIONS=433} [2022-12-05 18:57:27,615 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -2 predicate places. [2022-12-05 18:57:27,615 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 433 transitions, 966 flow [2022-12-05 18:57:27,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 375.0) internal successors, (3375), 9 states have internal predecessors, (3375), 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) [2022-12-05 18:57:27,617 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:27,617 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:27,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 18:57:27,823 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 [2022-12-05 18:57:27,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:27,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash -429689400, now seen corresponding path program 1 times [2022-12-05 18:57:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:27,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840927672] [2022-12-05 18:57:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:27,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 18:57:28,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:28,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840927672] [2022-12-05 18:57:28,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840927672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:57:28,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:57:28,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:57:28,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454227264] [2022-12-05 18:57:28,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:28,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:57:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:28,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:57:28,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:57:28,329 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 483 [2022-12-05 18:57:28,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 433 transitions, 966 flow. Second operand has 8 states, 8 states have (on average 335.875) internal successors, (2687), 8 states have internal predecessors, (2687), 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) [2022-12-05 18:57:28,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:28,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 483 [2022-12-05 18:57:28,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:57:28,584 INFO L130 PetriNetUnfolder]: 47/824 cut-off events. [2022-12-05 18:57:28,584 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-12-05 18:57:28,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 824 events. 47/824 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2981 event pairs, 21 based on Foata normal form. 0/784 useless extension candidates. Maximal degree in co-relation 956. Up to 136 conditions per place. [2022-12-05 18:57:28,593 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 108 selfloop transitions, 11 changer transitions 0/437 dead transitions. [2022-12-05 18:57:28,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 437 transitions, 1212 flow [2022-12-05 18:57:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 18:57:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 18:57:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3025 transitions. [2022-12-05 18:57:28,599 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.695882217621348 [2022-12-05 18:57:28,599 INFO L175 Difference]: Start difference. First operand has 437 places, 433 transitions, 966 flow. Second operand 9 states and 3025 transitions. [2022-12-05 18:57:28,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 437 transitions, 1212 flow [2022-12-05 18:57:28,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 437 transitions, 1185 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 18:57:28,608 INFO L231 Difference]: Finished difference. Result has 438 places, 434 transitions, 969 flow [2022-12-05 18:57:28,608 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=969, PETRI_PLACES=438, PETRI_TRANSITIONS=434} [2022-12-05 18:57:28,609 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -1 predicate places. [2022-12-05 18:57:28,609 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 434 transitions, 969 flow [2022-12-05 18:57:28,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 335.875) internal successors, (2687), 8 states have internal predecessors, (2687), 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) [2022-12-05 18:57:28,611 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:28,611 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:28,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 18:57:28,611 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2113859984, now seen corresponding path program 1 times [2022-12-05 18:57:28,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:28,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952624556] [2022-12-05 18:57:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:28,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 18:57:28,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:28,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952624556] [2022-12-05 18:57:28,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952624556] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:57:28,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346294507] [2022-12-05 18:57:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:28,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:57:28,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:57:28,944 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) [2022-12-05 18:57:28,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 18:57:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:29,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 18:57:29,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:57:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 18:57:29,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:57:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 18:57:29,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346294507] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 18:57:29,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 18:57:29,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-05 18:57:29,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417855561] [2022-12-05 18:57:29,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 18:57:29,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:29,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 18:57:29,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-05 18:57:29,561 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 483 [2022-12-05 18:57:29,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 434 transitions, 969 flow. Second operand has 9 states, 9 states have (on average 375.8888888888889) internal successors, (3383), 9 states have internal predecessors, (3383), 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) [2022-12-05 18:57:29,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:29,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 483 [2022-12-05 18:57:29,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:57:29,885 INFO L130 PetriNetUnfolder]: 47/825 cut-off events. [2022-12-05 18:57:29,885 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-05 18:57:29,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 825 events. 47/825 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2954 event pairs, 21 based on Foata normal form. 0/784 useless extension candidates. Maximal degree in co-relation 935. Up to 91 conditions per place. [2022-12-05 18:57:29,895 INFO L137 encePairwiseOnDemand]: 463/483 looper letters, 71 selfloop transitions, 20 changer transitions 0/436 dead transitions. [2022-12-05 18:57:29,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 436 transitions, 1155 flow [2022-12-05 18:57:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 18:57:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 18:57:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4872 transitions. [2022-12-05 18:57:29,904 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7759197324414716 [2022-12-05 18:57:29,904 INFO L175 Difference]: Start difference. First operand has 438 places, 434 transitions, 969 flow. Second operand 13 states and 4872 transitions. [2022-12-05 18:57:29,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 436 transitions, 1155 flow [2022-12-05 18:57:29,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 436 transitions, 1135 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-05 18:57:29,912 INFO L231 Difference]: Finished difference. Result has 446 places, 436 transitions, 1009 flow [2022-12-05 18:57:29,913 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1009, PETRI_PLACES=446, PETRI_TRANSITIONS=436} [2022-12-05 18:57:29,913 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, 7 predicate places. [2022-12-05 18:57:29,914 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 436 transitions, 1009 flow [2022-12-05 18:57:29,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 375.8888888888889) internal successors, (3383), 9 states have internal predecessors, (3383), 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) [2022-12-05 18:57:29,916 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:29,916 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:29,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 18:57:30,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-05 18:57:30,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:30,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:30,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1173899261, now seen corresponding path program 1 times [2022-12-05 18:57:30,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:30,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598044616] [2022-12-05 18:57:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:30,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 18:57:30,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:30,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598044616] [2022-12-05 18:57:30,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598044616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:57:30,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:57:30,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:57:30,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538971080] [2022-12-05 18:57:30,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:30,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:57:30,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:30,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:57:30,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:57:30,605 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 483 [2022-12-05 18:57:30,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 436 transitions, 1009 flow. Second operand has 8 states, 8 states have (on average 336.375) internal successors, (2691), 8 states have internal predecessors, (2691), 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) [2022-12-05 18:57:30,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:30,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 483 [2022-12-05 18:57:30,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:57:30,876 INFO L130 PetriNetUnfolder]: 71/978 cut-off events. [2022-12-05 18:57:30,876 INFO L131 PetriNetUnfolder]: For 49/54 co-relation queries the response was YES. [2022-12-05 18:57:30,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 978 events. 71/978 cut-off events. For 49/54 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4145 event pairs, 39 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 1154. Up to 126 conditions per place. [2022-12-05 18:57:30,885 INFO L137 encePairwiseOnDemand]: 473/483 looper letters, 112 selfloop transitions, 9 changer transitions 0/440 dead transitions. [2022-12-05 18:57:30,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 440 transitions, 1259 flow [2022-12-05 18:57:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 18:57:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 18:57:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2702 transitions. [2022-12-05 18:57:30,891 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6992753623188406 [2022-12-05 18:57:30,891 INFO L175 Difference]: Start difference. First operand has 446 places, 436 transitions, 1009 flow. Second operand 8 states and 2702 transitions. [2022-12-05 18:57:30,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 440 transitions, 1259 flow [2022-12-05 18:57:30,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 440 transitions, 1226 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-05 18:57:30,900 INFO L231 Difference]: Finished difference. Result has 444 places, 437 transitions, 1002 flow [2022-12-05 18:57:30,901 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1002, PETRI_PLACES=444, PETRI_TRANSITIONS=437} [2022-12-05 18:57:30,902 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, 5 predicate places. [2022-12-05 18:57:30,903 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 437 transitions, 1002 flow [2022-12-05 18:57:30,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 336.375) internal successors, (2691), 8 states have internal predecessors, (2691), 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) [2022-12-05 18:57:30,905 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:30,905 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:30,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 18:57:30,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:30,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1251194302, now seen corresponding path program 1 times [2022-12-05 18:57:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:30,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046152930] [2022-12-05 18:57:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:30,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 18:57:31,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:31,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046152930] [2022-12-05 18:57:31,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046152930] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:57:31,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698161919] [2022-12-05 18:57:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:31,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:57:31,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:57:31,236 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) [2022-12-05 18:57:31,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 18:57:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:31,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 18:57:31,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:57:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 18:57:31,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:57:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 18:57:31,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698161919] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 18:57:31,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 18:57:31,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-05 18:57:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437002919] [2022-12-05 18:57:31,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:31,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 18:57:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 18:57:31,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-05 18:57:31,786 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 483 [2022-12-05 18:57:31,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 437 transitions, 1002 flow. Second operand has 9 states, 9 states have (on average 376.77777777777777) internal successors, (3391), 9 states have internal predecessors, (3391), 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) [2022-12-05 18:57:31,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:31,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 483 [2022-12-05 18:57:31,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:57:32,135 INFO L130 PetriNetUnfolder]: 71/979 cut-off events. [2022-12-05 18:57:32,135 INFO L131 PetriNetUnfolder]: For 55/60 co-relation queries the response was YES. [2022-12-05 18:57:32,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 979 events. 71/979 cut-off events. For 55/60 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4138 event pairs, 39 based on Foata normal form. 0/926 useless extension candidates. Maximal degree in co-relation 1142. Up to 86 conditions per place. [2022-12-05 18:57:32,146 INFO L137 encePairwiseOnDemand]: 463/483 looper letters, 73 selfloop transitions, 21 changer transitions 0/439 dead transitions. [2022-12-05 18:57:32,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 439 transitions, 1194 flow [2022-12-05 18:57:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 18:57:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 18:57:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4504 transitions. [2022-12-05 18:57:32,155 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.777087646652864 [2022-12-05 18:57:32,155 INFO L175 Difference]: Start difference. First operand has 444 places, 437 transitions, 1002 flow. Second operand 12 states and 4504 transitions. [2022-12-05 18:57:32,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 439 transitions, 1194 flow [2022-12-05 18:57:32,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 439 transitions, 1178 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 18:57:32,164 INFO L231 Difference]: Finished difference. Result has 452 places, 439 transitions, 1047 flow [2022-12-05 18:57:32,164 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1047, PETRI_PLACES=452, PETRI_TRANSITIONS=439} [2022-12-05 18:57:32,165 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, 13 predicate places. [2022-12-05 18:57:32,165 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 439 transitions, 1047 flow [2022-12-05 18:57:32,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 376.77777777777777) internal successors, (3391), 9 states have internal predecessors, (3391), 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) [2022-12-05 18:57:32,167 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:57:32,167 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:57:32,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 18:57:32,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:57:32,373 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:57:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:57:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1520473869, now seen corresponding path program 1 times [2022-12-05 18:57:32,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:57:32,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612832833] [2022-12-05 18:57:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:57:32,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:57:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:57:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 18:57:35,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:57:35,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612832833] [2022-12-05 18:57:35,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612832833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:57:35,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:57:35,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-12-05 18:57:35,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080714745] [2022-12-05 18:57:35,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:57:35,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-05 18:57:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:57:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-05 18:57:35,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-12-05 18:57:35,452 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 483 [2022-12-05 18:57:35,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 439 transitions, 1047 flow. Second operand has 24 states, 24 states have (on average 276.5416666666667) internal successors, (6637), 24 states have internal predecessors, (6637), 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) [2022-12-05 18:57:35,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:57:35,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 483 [2022-12-05 18:57:35,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:05,905 INFO L130 PetriNetUnfolder]: 60025/156198 cut-off events. [2022-12-05 18:58:05,906 INFO L131 PetriNetUnfolder]: For 1167/1167 co-relation queries the response was YES. [2022-12-05 18:58:06,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248453 conditions, 156198 events. 60025/156198 cut-off events. For 1167/1167 co-relation queries the response was YES. Maximal size of possible extension queue 4366. Compared 2200142 event pairs, 6375 based on Foata normal form. 1/149064 useless extension candidates. Maximal degree in co-relation 248267. Up to 23297 conditions per place. [2022-12-05 18:58:07,536 INFO L137 encePairwiseOnDemand]: 442/483 looper letters, 1173 selfloop transitions, 180 changer transitions 58/1684 dead transitions. [2022-12-05 18:58:07,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 1684 transitions, 6426 flow [2022-12-05 18:58:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-12-05 18:58:07,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2022-12-05 18:58:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 32462 transitions. [2022-12-05 18:58:07,592 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5844270411378162 [2022-12-05 18:58:07,592 INFO L175 Difference]: Start difference. First operand has 452 places, 439 transitions, 1047 flow. Second operand 115 states and 32462 transitions. [2022-12-05 18:58:07,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 1684 transitions, 6426 flow [2022-12-05 18:58:07,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 1684 transitions, 6390 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-05 18:58:07,949 INFO L231 Difference]: Finished difference. Result has 643 places, 620 transitions, 2261 flow [2022-12-05 18:58:07,950 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=115, PETRI_FLOW=2261, PETRI_PLACES=643, PETRI_TRANSITIONS=620} [2022-12-05 18:58:07,950 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, 204 predicate places. [2022-12-05 18:58:07,951 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 620 transitions, 2261 flow [2022-12-05 18:58:07,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 276.5416666666667) internal successors, (6637), 24 states have internal predecessors, (6637), 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) [2022-12-05 18:58:07,953 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:07,954 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:07,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 18:58:07,954 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 18:58:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:07,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1255904351, now seen corresponding path program 2 times [2022-12-05 18:58:07,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:07,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537430169] [2022-12-05 18:58:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:07,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 18:58:11,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:11,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537430169] [2022-12-05 18:58:11,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537430169] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:58:11,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:58:11,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-12-05 18:58:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602561310] [2022-12-05 18:58:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:11,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-05 18:58:11,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:11,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-05 18:58:11,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-12-05 18:58:11,567 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 483 [2022-12-05 18:58:11,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 620 transitions, 2261 flow. Second operand has 36 states, 36 states have (on average 237.30555555555554) internal successors, (8543), 36 states have internal predecessors, (8543), 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) [2022-12-05 18:58:11,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:11,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 483 [2022-12-05 18:58:11,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand