/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:06:27,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:06:27,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:06:27,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:06:27,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:06:27,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:06:27,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:06:27,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:06:27,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:06:27,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:06:27,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:06:27,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:06:27,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:06:27,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:06:27,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:06:27,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:06:27,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:06:27,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:06:27,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:06:27,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:06:27,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:06:27,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:06:27,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:06:27,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:06:27,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:06:27,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:06:27,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:06:27,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:06:27,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:06:27,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:06:27,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:06:27,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:06:27,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:06:27,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:06:27,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:06:27,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:06:27,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:06:27,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:06:27,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:06:27,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:06:27,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:06:27,851 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-VariableLbe.epf [2023-01-28 09:06:27,876 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:06:27,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:06:27,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:06:27,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:06:27,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:06:27,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:06:27,878 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:06:27,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:06:27,879 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:06:27,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:06:27,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:06:27,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:06:27,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:06:27,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:06:27,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:06:27,880 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:06:27,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:06:27,880 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:06:27,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:06:27,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:06:27,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:06:27,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:06:27,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:06:27,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:06:27,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:06:27,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:06:27,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:06:27,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:06:27,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:06:27,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:06:27,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:06:27,882 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:06:28,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:06:28,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:06:28,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:06:28,139 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:06:28,139 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:06:28,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-01-28 09:06:29,456 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:06:29,641 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:06:29,641 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-01-28 09:06:29,650 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1868d048c/c0e39567d511439aa30f4b6c9c37a154/FLAG51ffc4e93 [2023-01-28 09:06:29,658 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1868d048c/c0e39567d511439aa30f4b6c9c37a154 [2023-01-28 09:06:29,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:06:29,661 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:06:29,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:06:29,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:06:29,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:06:29,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:29,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564e9d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29, skipping insertion in model container [2023-01-28 09:06:29,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:29,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:06:29,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:06:29,892 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2023-01-28 09:06:29,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:06:29,915 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:06:29,970 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2023-01-28 09:06:29,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:06:29,995 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:06:29,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29 WrapperNode [2023-01-28 09:06:29,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:06:29,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:06:29,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:06:29,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:06:30,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,066 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 601 [2023-01-28 09:06:30,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:06:30,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:06:30,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:06:30,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:06:30,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:06:30,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:06:30,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:06:30,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:06:30,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (1/1) ... [2023-01-28 09:06:30,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:06:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:06:30,142 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) [2023-01-28 09:06:30,164 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 [2023-01-28 09:06:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:06:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:06:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:06:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:06:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:06:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:06:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:06:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:06:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:06:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:06:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:06:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:06:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:06:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:06:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:06:30,181 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:06:30,340 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:06:30,342 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:06:31,132 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:06:31,148 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:06:31,148 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 09:06:31,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:06:31 BoogieIcfgContainer [2023-01-28 09:06:31,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:06:31,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:06:31,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:06:31,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:06:31,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:06:29" (1/3) ... [2023-01-28 09:06:31,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c14ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:06:31, skipping insertion in model container [2023-01-28 09:06:31,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:06:29" (2/3) ... [2023-01-28 09:06:31,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c14ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:06:31, skipping insertion in model container [2023-01-28 09:06:31,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:06:31" (3/3) ... [2023-01-28 09:06:31,158 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-01-28 09:06:31,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:06:31,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:06:31,187 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:06:31,317 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:06:31,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 654 places, 717 transitions, 1458 flow [2023-01-28 09:06:31,588 INFO L130 PetriNetUnfolder]: 73/714 cut-off events. [2023-01-28 09:06:31,588 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:06:31,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 714 events. 73/714 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2388 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 532. Up to 2 conditions per place. [2023-01-28 09:06:31,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 654 places, 717 transitions, 1458 flow [2023-01-28 09:06:31,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 641 places, 704 transitions, 1426 flow [2023-01-28 09:06:31,624 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:06:31,632 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 641 places, 704 transitions, 1426 flow [2023-01-28 09:06:31,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 641 places, 704 transitions, 1426 flow [2023-01-28 09:06:31,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 704 transitions, 1426 flow [2023-01-28 09:06:31,827 INFO L130 PetriNetUnfolder]: 73/704 cut-off events. [2023-01-28 09:06:31,828 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:06:31,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 704 events. 73/704 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2389 event pairs, 0 based on Foata normal form. 0/631 useless extension candidates. Maximal degree in co-relation 532. Up to 2 conditions per place. [2023-01-28 09:06:31,885 INFO L119 LiptonReduction]: Number of co-enabled transitions 157248 [2023-01-28 09:06:57,866 INFO L134 LiptonReduction]: Checked pairs total: 150057 [2023-01-28 09:06:57,866 INFO L136 LiptonReduction]: Total number of compositions: 891 [2023-01-28 09:06:57,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:06:57,885 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;@7ae5db92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:06:57,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:06:57,893 INFO L130 PetriNetUnfolder]: 12/47 cut-off events. [2023-01-28 09:06:57,893 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:06:57,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:57,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:57,894 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)] === [2023-01-28 09:06:57,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:57,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1427696023, now seen corresponding path program 1 times [2023-01-28 09:06:57,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:57,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692973299] [2023-01-28 09:06:57,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:57,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:06:58,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692973299] [2023-01-28 09:06:58,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692973299] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:58,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:58,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:06:58,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42915035] [2023-01-28 09:06:58,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:06:58,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:58,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:06:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:06:58,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-28 09:06:58,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 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) [2023-01-28 09:06:58,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:58,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-28 09:06:58,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:58,970 INFO L130 PetriNetUnfolder]: 2608/3503 cut-off events. [2023-01-28 09:06:58,971 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-01-28 09:06:58,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 3503 events. 2608/3503 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12504 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 6748. Up to 3501 conditions per place. [2023-01-28 09:06:58,990 INFO L137 encePairwiseOnDemand]: 1600/1608 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-01-28 09:06:58,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 218 flow [2023-01-28 09:06:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:06:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:06:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1983 transitions. [2023-01-28 09:06:59,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110696517412935 [2023-01-28 09:06:59,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1983 transitions. [2023-01-28 09:06:59,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1983 transitions. [2023-01-28 09:06:59,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:59,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1983 transitions. [2023-01-28 09:06:59,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 661.0) internal successors, (1983), 3 states have internal predecessors, (1983), 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) [2023-01-28 09:06:59,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 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) [2023-01-28 09:06:59,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 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) [2023-01-28 09:06:59,082 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 114 flow. Second operand 3 states and 1983 transitions. [2023-01-28 09:06:59,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 218 flow [2023-01-28 09:06:59,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:06:59,089 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 132 flow [2023-01-28 09:06:59,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2023-01-28 09:06:59,093 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-01-28 09:06:59,093 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 132 flow [2023-01-28 09:06:59,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 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) [2023-01-28 09:06:59,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:59,095 INFO L208 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] [2023-01-28 09:06:59,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:06:59,095 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)] === [2023-01-28 09:06:59,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:59,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2065041558, now seen corresponding path program 1 times [2023-01-28 09:06:59,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:59,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609414224] [2023-01-28 09:06:59,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:59,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:06:59,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:59,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609414224] [2023-01-28 09:06:59,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609414224] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:06:59,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900160223] [2023-01-28 09:06:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:59,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:06:59,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:06:59,298 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) [2023-01-28 09:06:59,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:06:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:59,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 09:06:59,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:06:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:06:59,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:06:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:06:59,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900160223] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:06:59,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:06:59,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-28 09:06:59,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063216322] [2023-01-28 09:06:59,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:06:59,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:06:59,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:06:59,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:06:59,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-28 09:06:59,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 132 flow. Second operand has 8 states, 8 states have (on average 647.0) internal successors, (5176), 8 states have internal predecessors, (5176), 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) [2023-01-28 09:06:59,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:59,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-28 09:06:59,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:00,228 INFO L130 PetriNetUnfolder]: 2608/3512 cut-off events. [2023-01-28 09:07:00,229 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-01-28 09:07:00,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7161 conditions, 3512 events. 2608/3512 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12508 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7112. Up to 3501 conditions per place. [2023-01-28 09:07:00,245 INFO L137 encePairwiseOnDemand]: 1601/1608 looper letters, 44 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2023-01-28 09:07:00,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 286 flow [2023-01-28 09:07:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:07:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:07:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3926 transitions. [2023-01-28 09:07:00,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40692371475953565 [2023-01-28 09:07:00,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3926 transitions. [2023-01-28 09:07:00,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3926 transitions. [2023-01-28 09:07:00,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:00,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3926 transitions. [2023-01-28 09:07:00,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 654.3333333333334) internal successors, (3926), 6 states have internal predecessors, (3926), 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) [2023-01-28 09:07:00,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1608.0) internal successors, (11256), 7 states have internal predecessors, (11256), 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) [2023-01-28 09:07:00,283 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1608.0) internal successors, (11256), 7 states have internal predecessors, (11256), 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) [2023-01-28 09:07:00,283 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 132 flow. Second operand 6 states and 3926 transitions. [2023-01-28 09:07:00,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 286 flow [2023-01-28 09:07:00,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:07:00,286 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 222 flow [2023-01-28 09:07:00,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-01-28 09:07:00,287 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-01-28 09:07:00,287 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 222 flow [2023-01-28 09:07:00,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 647.0) internal successors, (5176), 8 states have internal predecessors, (5176), 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) [2023-01-28 09:07:00,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:00,290 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:00,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 09:07:00,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:07:00,497 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)] === [2023-01-28 09:07:00,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:00,498 INFO L85 PathProgramCache]: Analyzing trace with hash 773664469, now seen corresponding path program 2 times [2023-01-28 09:07:00,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:00,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104742554] [2023-01-28 09:07:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:00,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 09:07:00,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:00,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104742554] [2023-01-28 09:07:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104742554] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:07:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630303568] [2023-01-28 09:07:00,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:07:00,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:07:00,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:07:00,715 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) [2023-01-28 09:07:00,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:07:00,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:07:00,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:07:00,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 09:07:00,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:07:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 09:07:02,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:07:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630303568] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:02,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:07:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-01-28 09:07:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976346948] [2023-01-28 09:07:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:02,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:07:02,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:07:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:07:02,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 09:07:02,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:02,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:02,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 09:07:02,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:03,642 INFO L130 PetriNetUnfolder]: 2934/4017 cut-off events. [2023-01-28 09:07:03,642 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-01-28 09:07:03,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8213 conditions, 4017 events. 2934/4017 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15676 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8125. Up to 3431 conditions per place. [2023-01-28 09:07:03,660 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 96 selfloop transitions, 2 changer transitions 7/105 dead transitions. [2023-01-28 09:07:03,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 536 flow [2023-01-28 09:07:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:07:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:07:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3169 transitions. [2023-01-28 09:07:03,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941542288557214 [2023-01-28 09:07:03,668 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3169 transitions. [2023-01-28 09:07:03,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3169 transitions. [2023-01-28 09:07:03,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:03,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3169 transitions. [2023-01-28 09:07:03,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 633.8) internal successors, (3169), 5 states have internal predecessors, (3169), 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) [2023-01-28 09:07:03,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:03,687 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:03,687 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 222 flow. Second operand 5 states and 3169 transitions. [2023-01-28 09:07:03,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 536 flow [2023-01-28 09:07:03,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 105 transitions, 512 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-28 09:07:03,690 INFO L231 Difference]: Finished difference. Result has 56 places, 60 transitions, 213 flow [2023-01-28 09:07:03,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=56, PETRI_TRANSITIONS=60} [2023-01-28 09:07:03,691 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-01-28 09:07:03,691 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 60 transitions, 213 flow [2023-01-28 09:07:03,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:03,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:03,692 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:03,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 09:07:03,899 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,SelfDestructingSolverStorable2 [2023-01-28 09:07:03,899 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)] === [2023-01-28 09:07:03,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1680310845, now seen corresponding path program 3 times [2023-01-28 09:07:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:03,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107156352] [2023-01-28 09:07:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:03,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 09:07:04,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:04,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107156352] [2023-01-28 09:07:04,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107156352] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:07:04,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136055875] [2023-01-28 09:07:04,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:07:04,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:07:04,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:07:04,122 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) [2023-01-28 09:07:04,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:07:04,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:07:04,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:07:04,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 09:07:04,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:07:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 09:07:05,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:07:05,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136055875] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:05,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:07:05,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-01-28 09:07:05,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802130827] [2023-01-28 09:07:05,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:05,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:07:05,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:05,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:07:05,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:07:05,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 09:07:05,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 60 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:05,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:05,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 09:07:05,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:06,632 INFO L130 PetriNetUnfolder]: 3124/4357 cut-off events. [2023-01-28 09:07:06,632 INFO L131 PetriNetUnfolder]: For 701/701 co-relation queries the response was YES. [2023-01-28 09:07:06,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 4357 events. 3124/4357 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18094 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9371. Up to 3869 conditions per place. [2023-01-28 09:07:06,656 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 100 selfloop transitions, 3 changer transitions 7/110 dead transitions. [2023-01-28 09:07:06,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 110 transitions, 555 flow [2023-01-28 09:07:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:07:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:07:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3173 transitions. [2023-01-28 09:07:06,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39465174129353237 [2023-01-28 09:07:06,664 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3173 transitions. [2023-01-28 09:07:06,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3173 transitions. [2023-01-28 09:07:06,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:06,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3173 transitions. [2023-01-28 09:07:06,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 634.6) internal successors, (3173), 5 states have internal predecessors, (3173), 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) [2023-01-28 09:07:06,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:06,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:06,680 INFO L175 Difference]: Start difference. First operand has 56 places, 60 transitions, 213 flow. Second operand 5 states and 3173 transitions. [2023-01-28 09:07:06,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 110 transitions, 555 flow [2023-01-28 09:07:06,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 110 transitions, 546 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 09:07:06,686 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 230 flow [2023-01-28 09:07:06,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-01-28 09:07:06,688 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-01-28 09:07:06,688 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 230 flow [2023-01-28 09:07:06,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:06,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:06,689 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:06,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 09:07:06,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:07:06,895 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)] === [2023-01-28 09:07:06,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:06,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1405257897, now seen corresponding path program 4 times [2023-01-28 09:07:06,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:06,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994591188] [2023-01-28 09:07:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:06,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 09:07:07,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994591188] [2023-01-28 09:07:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994591188] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:07:07,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336025366] [2023-01-28 09:07:07,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:07:07,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:07:07,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:07:07,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:07:07,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 09:07:07,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:07:07,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:07:07,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 09:07:07,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:07:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 09:07:07,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:07:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 09:07:07,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336025366] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:07:07,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:07:07,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 09:07:07,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956674630] [2023-01-28 09:07:07,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:07:07,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:07:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:07:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:07:07,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-28 09:07:07,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 230 flow. Second operand has 13 states, 13 states have (on average 645.5384615384615) internal successors, (8392), 13 states have internal predecessors, (8392), 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) [2023-01-28 09:07:07,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:07,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-28 09:07:07,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:08,055 INFO L130 PetriNetUnfolder]: 3123/4352 cut-off events. [2023-01-28 09:07:08,056 INFO L131 PetriNetUnfolder]: For 1787/1787 co-relation queries the response was YES. [2023-01-28 09:07:08,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9913 conditions, 4352 events. 3123/4352 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17812 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 9879. Up to 4338 conditions per place. [2023-01-28 09:07:08,076 INFO L137 encePairwiseOnDemand]: 1601/1608 looper letters, 46 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2023-01-28 09:07:08,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 376 flow [2023-01-28 09:07:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:07:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:07:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4566 transitions. [2023-01-28 09:07:08,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056503198294243 [2023-01-28 09:07:08,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4566 transitions. [2023-01-28 09:07:08,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4566 transitions. [2023-01-28 09:07:08,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:08,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4566 transitions. [2023-01-28 09:07:08,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 652.2857142857143) internal successors, (4566), 7 states have internal predecessors, (4566), 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) [2023-01-28 09:07:08,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 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) [2023-01-28 09:07:08,112 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 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) [2023-01-28 09:07:08,112 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 230 flow. Second operand 7 states and 4566 transitions. [2023-01-28 09:07:08,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 376 flow [2023-01-28 09:07:08,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 370 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 09:07:08,116 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 292 flow [2023-01-28 09:07:08,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-01-28 09:07:08,117 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-01-28 09:07:08,117 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 292 flow [2023-01-28 09:07:08,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 645.5384615384615) internal successors, (8392), 13 states have internal predecessors, (8392), 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) [2023-01-28 09:07:08,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:08,119 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:08,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 09:07:08,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:07:08,326 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)] === [2023-01-28 09:07:08,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:08,326 INFO L85 PathProgramCache]: Analyzing trace with hash -472303414, now seen corresponding path program 5 times [2023-01-28 09:07:08,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:08,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168545959] [2023-01-28 09:07:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:08,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:09,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:09,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168545959] [2023-01-28 09:07:09,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168545959] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:09,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:09,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:07:09,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082679002] [2023-01-28 09:07:09,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:09,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:07:09,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:09,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:07:09,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:07:09,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 09:07:09,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:09,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:09,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 09:07:09,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:11,692 INFO L130 PetriNetUnfolder]: 7479/10347 cut-off events. [2023-01-28 09:07:11,693 INFO L131 PetriNetUnfolder]: For 1820/1820 co-relation queries the response was YES. [2023-01-28 09:07:11,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22274 conditions, 10347 events. 7479/10347 cut-off events. For 1820/1820 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 51307 event pairs, 1252 based on Foata normal form. 1/8396 useless extension candidates. Maximal degree in co-relation 22161. Up to 3749 conditions per place. [2023-01-28 09:07:11,730 INFO L137 encePairwiseOnDemand]: 1595/1608 looper letters, 156 selfloop transitions, 42 changer transitions 1/199 dead transitions. [2023-01-28 09:07:11,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 199 transitions, 1028 flow [2023-01-28 09:07:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:07:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:07:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4485 transitions. [2023-01-28 09:07:11,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39845415778251597 [2023-01-28 09:07:11,741 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4485 transitions. [2023-01-28 09:07:11,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4485 transitions. [2023-01-28 09:07:11,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:11,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4485 transitions. [2023-01-28 09:07:11,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 640.7142857142857) internal successors, (4485), 7 states have internal predecessors, (4485), 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) [2023-01-28 09:07:11,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 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) [2023-01-28 09:07:11,765 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 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) [2023-01-28 09:07:11,765 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 292 flow. Second operand 7 states and 4485 transitions. [2023-01-28 09:07:11,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 199 transitions, 1028 flow [2023-01-28 09:07:11,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 199 transitions, 992 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 09:07:11,771 INFO L231 Difference]: Finished difference. Result has 71 places, 107 transitions, 583 flow [2023-01-28 09:07:11,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=583, PETRI_PLACES=71, PETRI_TRANSITIONS=107} [2023-01-28 09:07:11,772 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2023-01-28 09:07:11,772 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 107 transitions, 583 flow [2023-01-28 09:07:11,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:11,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:11,773 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:11,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:07:11,773 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)] === [2023-01-28 09:07:11,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash 952440716, now seen corresponding path program 6 times [2023-01-28 09:07:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798244765] [2023-01-28 09:07:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:12,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:12,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798244765] [2023-01-28 09:07:12,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798244765] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:12,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:12,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:07:12,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802152737] [2023-01-28 09:07:12,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:12,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:07:12,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:07:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:07:12,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 09:07:12,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 107 transitions, 583 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:12,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:12,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 09:07:12,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:14,829 INFO L130 PetriNetUnfolder]: 9673/13376 cut-off events. [2023-01-28 09:07:14,829 INFO L131 PetriNetUnfolder]: For 9800/9800 co-relation queries the response was YES. [2023-01-28 09:07:14,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38275 conditions, 13376 events. 9673/13376 cut-off events. For 9800/9800 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 67067 event pairs, 2739 based on Foata normal form. 1/11107 useless extension candidates. Maximal degree in co-relation 38175. Up to 7196 conditions per place. [2023-01-28 09:07:14,899 INFO L137 encePairwiseOnDemand]: 1595/1608 looper letters, 151 selfloop transitions, 47 changer transitions 2/200 dead transitions. [2023-01-28 09:07:14,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 200 transitions, 1371 flow [2023-01-28 09:07:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:07:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:07:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3189 transitions. [2023-01-28 09:07:14,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3966417910447761 [2023-01-28 09:07:14,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3189 transitions. [2023-01-28 09:07:14,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3189 transitions. [2023-01-28 09:07:14,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:14,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3189 transitions. [2023-01-28 09:07:14,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 637.8) internal successors, (3189), 5 states have internal predecessors, (3189), 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) [2023-01-28 09:07:14,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:14,923 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:14,923 INFO L175 Difference]: Start difference. First operand has 71 places, 107 transitions, 583 flow. Second operand 5 states and 3189 transitions. [2023-01-28 09:07:14,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 200 transitions, 1371 flow [2023-01-28 09:07:15,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 200 transitions, 1363 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-28 09:07:15,127 INFO L231 Difference]: Finished difference. Result has 79 places, 144 transitions, 1035 flow [2023-01-28 09:07:15,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=79, PETRI_TRANSITIONS=144} [2023-01-28 09:07:15,128 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2023-01-28 09:07:15,128 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 144 transitions, 1035 flow [2023-01-28 09:07:15,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:15,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:15,129 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:07:15,130 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)] === [2023-01-28 09:07:15,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1010676078, now seen corresponding path program 7 times [2023-01-28 09:07:15,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:15,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890068823] [2023-01-28 09:07:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:15,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:16,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:16,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890068823] [2023-01-28 09:07:16,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890068823] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:16,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:16,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:07:16,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101500649] [2023-01-28 09:07:16,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:16,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:07:16,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:16,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:07:16,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:07:16,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 09:07:16,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 144 transitions, 1035 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:16,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:16,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 09:07:16,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:18,840 INFO L130 PetriNetUnfolder]: 10088/14013 cut-off events. [2023-01-28 09:07:18,840 INFO L131 PetriNetUnfolder]: For 18963/18963 co-relation queries the response was YES. [2023-01-28 09:07:18,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44718 conditions, 14013 events. 10088/14013 cut-off events. For 18963/18963 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 71621 event pairs, 4629 based on Foata normal form. 1/11640 useless extension candidates. Maximal degree in co-relation 44614. Up to 11506 conditions per place. [2023-01-28 09:07:18,908 INFO L137 encePairwiseOnDemand]: 1596/1608 looper letters, 198 selfloop transitions, 43 changer transitions 2/243 dead transitions. [2023-01-28 09:07:18,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 243 transitions, 2044 flow [2023-01-28 09:07:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:07:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:07:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3199 transitions. [2023-01-28 09:07:18,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978855721393035 [2023-01-28 09:07:18,915 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3199 transitions. [2023-01-28 09:07:18,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3199 transitions. [2023-01-28 09:07:18,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:18,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3199 transitions. [2023-01-28 09:07:18,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 639.8) internal successors, (3199), 5 states have internal predecessors, (3199), 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) [2023-01-28 09:07:18,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:18,931 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:18,931 INFO L175 Difference]: Start difference. First operand has 79 places, 144 transitions, 1035 flow. Second operand 5 states and 3199 transitions. [2023-01-28 09:07:18,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 243 transitions, 2044 flow [2023-01-28 09:07:19,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 243 transitions, 2032 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-01-28 09:07:19,098 INFO L231 Difference]: Finished difference. Result has 86 places, 171 transitions, 1464 flow [2023-01-28 09:07:19,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1464, PETRI_PLACES=86, PETRI_TRANSITIONS=171} [2023-01-28 09:07:19,101 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2023-01-28 09:07:19,101 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 171 transitions, 1464 flow [2023-01-28 09:07:19,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:19,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:19,102 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:19,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:07:19,102 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)] === [2023-01-28 09:07:19,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:19,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1354860510, now seen corresponding path program 8 times [2023-01-28 09:07:19,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:19,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237037755] [2023-01-28 09:07:19,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:19,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:19,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:19,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237037755] [2023-01-28 09:07:19,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237037755] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:19,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:19,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:07:19,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671378971] [2023-01-28 09:07:19,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:19,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:07:19,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:19,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:07:19,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:07:19,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 09:07:19,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 171 transitions, 1464 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:19,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:19,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 09:07:19,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:22,265 INFO L130 PetriNetUnfolder]: 10233/14236 cut-off events. [2023-01-28 09:07:22,265 INFO L131 PetriNetUnfolder]: For 27028/27028 co-relation queries the response was YES. [2023-01-28 09:07:22,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49716 conditions, 14236 events. 10233/14236 cut-off events. For 27028/27028 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 74045 event pairs, 2601 based on Foata normal form. 1/11817 useless extension candidates. Maximal degree in co-relation 49608. Up to 7212 conditions per place. [2023-01-28 09:07:22,344 INFO L137 encePairwiseOnDemand]: 1597/1608 looper letters, 190 selfloop transitions, 47 changer transitions 2/239 dead transitions. [2023-01-28 09:07:22,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 239 transitions, 2269 flow [2023-01-28 09:07:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:07:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:07:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3194 transitions. [2023-01-28 09:07:22,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972636815920398 [2023-01-28 09:07:22,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3194 transitions. [2023-01-28 09:07:22,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3194 transitions. [2023-01-28 09:07:22,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:22,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3194 transitions. [2023-01-28 09:07:22,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 638.8) internal successors, (3194), 5 states have internal predecessors, (3194), 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) [2023-01-28 09:07:22,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:22,369 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:22,369 INFO L175 Difference]: Start difference. First operand has 86 places, 171 transitions, 1464 flow. Second operand 5 states and 3194 transitions. [2023-01-28 09:07:22,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 239 transitions, 2269 flow [2023-01-28 09:07:22,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 239 transitions, 2261 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-28 09:07:22,708 INFO L231 Difference]: Finished difference. Result has 92 places, 180 transitions, 1699 flow [2023-01-28 09:07:22,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1699, PETRI_PLACES=92, PETRI_TRANSITIONS=180} [2023-01-28 09:07:22,709 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-01-28 09:07:22,709 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 180 transitions, 1699 flow [2023-01-28 09:07:22,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 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) [2023-01-28 09:07:22,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:22,710 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:22,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:07:22,710 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)] === [2023-01-28 09:07:22,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1151516539, now seen corresponding path program 1 times [2023-01-28 09:07:22,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:22,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975071068] [2023-01-28 09:07:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:22,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:22,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975071068] [2023-01-28 09:07:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975071068] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:22,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:07:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627953818] [2023-01-28 09:07:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:22,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:07:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:07:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:07:22,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-28 09:07:22,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 180 transitions, 1699 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 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) [2023-01-28 09:07:22,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:22,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-28 09:07:22,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:26,068 INFO L130 PetriNetUnfolder]: 14718/20390 cut-off events. [2023-01-28 09:07:26,068 INFO L131 PetriNetUnfolder]: For 46162/46162 co-relation queries the response was YES. [2023-01-28 09:07:26,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74089 conditions, 20390 events. 14718/20390 cut-off events. For 46162/46162 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 106906 event pairs, 5671 based on Foata normal form. 280/17004 useless extension candidates. Maximal degree in co-relation 73978. Up to 13705 conditions per place. [2023-01-28 09:07:26,174 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 223 selfloop transitions, 12 changer transitions 0/235 dead transitions. [2023-01-28 09:07:26,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 235 transitions, 2581 flow [2023-01-28 09:07:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:07:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:07:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2008 transitions. [2023-01-28 09:07:26,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41625207296849087 [2023-01-28 09:07:26,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2008 transitions. [2023-01-28 09:07:26,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2008 transitions. [2023-01-28 09:07:26,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:26,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2008 transitions. [2023-01-28 09:07:26,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 669.3333333333334) internal successors, (2008), 3 states have internal predecessors, (2008), 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) [2023-01-28 09:07:26,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 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) [2023-01-28 09:07:26,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 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) [2023-01-28 09:07:26,185 INFO L175 Difference]: Start difference. First operand has 92 places, 180 transitions, 1699 flow. Second operand 3 states and 2008 transitions. [2023-01-28 09:07:26,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 235 transitions, 2581 flow [2023-01-28 09:07:26,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 235 transitions, 2490 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-01-28 09:07:26,749 INFO L231 Difference]: Finished difference. Result has 94 places, 170 transitions, 1544 flow [2023-01-28 09:07:26,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1544, PETRI_PLACES=94, PETRI_TRANSITIONS=170} [2023-01-28 09:07:26,750 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2023-01-28 09:07:26,750 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 170 transitions, 1544 flow [2023-01-28 09:07:26,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 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) [2023-01-28 09:07:26,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:26,751 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:26,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 09:07:26,751 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)] === [2023-01-28 09:07:26,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:26,751 INFO L85 PathProgramCache]: Analyzing trace with hash -977446447, now seen corresponding path program 1 times [2023-01-28 09:07:26,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:26,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088799929] [2023-01-28 09:07:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:26,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:26,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:26,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088799929] [2023-01-28 09:07:26,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088799929] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:26,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:26,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:07:26,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767000052] [2023-01-28 09:07:26,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:26,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:07:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:26,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:07:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:07:26,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-28 09:07:26,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 170 transitions, 1544 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 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) [2023-01-28 09:07:26,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:26,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-28 09:07:26,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:30,384 INFO L130 PetriNetUnfolder]: 19754/27154 cut-off events. [2023-01-28 09:07:30,384 INFO L131 PetriNetUnfolder]: For 60626/60626 co-relation queries the response was YES. [2023-01-28 09:07:30,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95880 conditions, 27154 events. 19754/27154 cut-off events. For 60626/60626 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 142925 event pairs, 7741 based on Foata normal form. 0/22232 useless extension candidates. Maximal degree in co-relation 95768. Up to 20577 conditions per place. [2023-01-28 09:07:30,572 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 219 selfloop transitions, 8 changer transitions 0/227 dead transitions. [2023-01-28 09:07:30,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 227 transitions, 2405 flow [2023-01-28 09:07:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:07:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:07:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2006 transitions. [2023-01-28 09:07:30,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158374792703151 [2023-01-28 09:07:30,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2006 transitions. [2023-01-28 09:07:30,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2006 transitions. [2023-01-28 09:07:30,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:30,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2006 transitions. [2023-01-28 09:07:30,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 668.6666666666666) internal successors, (2006), 3 states have internal predecessors, (2006), 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) [2023-01-28 09:07:30,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 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) [2023-01-28 09:07:30,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 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) [2023-01-28 09:07:30,581 INFO L175 Difference]: Start difference. First operand has 94 places, 170 transitions, 1544 flow. Second operand 3 states and 2006 transitions. [2023-01-28 09:07:30,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 227 transitions, 2405 flow [2023-01-28 09:07:31,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 227 transitions, 2388 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:07:31,153 INFO L231 Difference]: Finished difference. Result has 96 places, 171 transitions, 1562 flow [2023-01-28 09:07:31,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1562, PETRI_PLACES=96, PETRI_TRANSITIONS=171} [2023-01-28 09:07:31,153 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2023-01-28 09:07:31,153 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 171 transitions, 1562 flow [2023-01-28 09:07:31,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 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) [2023-01-28 09:07:31,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:31,154 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:31,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:07:31,154 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:07:31,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1136703417, now seen corresponding path program 1 times [2023-01-28 09:07:31,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:31,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73469304] [2023-01-28 09:07:31,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:31,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:31,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:31,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73469304] [2023-01-28 09:07:31,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73469304] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:31,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:31,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:07:31,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829986547] [2023-01-28 09:07:31,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:31,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:07:31,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:31,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:07:31,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:07:31,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-28 09:07:31,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 171 transitions, 1562 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 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) [2023-01-28 09:07:31,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:31,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-28 09:07:31,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:35,180 INFO L130 PetriNetUnfolder]: 21302/29548 cut-off events. [2023-01-28 09:07:35,180 INFO L131 PetriNetUnfolder]: For 67464/67464 co-relation queries the response was YES. [2023-01-28 09:07:35,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103929 conditions, 29548 events. 21302/29548 cut-off events. For 67464/67464 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 161445 event pairs, 9453 based on Foata normal form. 0/25586 useless extension candidates. Maximal degree in co-relation 103816. Up to 24393 conditions per place. [2023-01-28 09:07:35,319 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 187 selfloop transitions, 19 changer transitions 0/206 dead transitions. [2023-01-28 09:07:35,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 206 transitions, 2158 flow [2023-01-28 09:07:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:07:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:07:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2010 transitions. [2023-01-28 09:07:35,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-01-28 09:07:35,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2010 transitions. [2023-01-28 09:07:35,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2010 transitions. [2023-01-28 09:07:35,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:35,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2010 transitions. [2023-01-28 09:07:35,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 670.0) internal successors, (2010), 3 states have internal predecessors, (2010), 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) [2023-01-28 09:07:35,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 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) [2023-01-28 09:07:35,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 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) [2023-01-28 09:07:35,327 INFO L175 Difference]: Start difference. First operand has 96 places, 171 transitions, 1562 flow. Second operand 3 states and 2010 transitions. [2023-01-28 09:07:35,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 206 transitions, 2158 flow [2023-01-28 09:07:36,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 206 transitions, 2147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:07:36,073 INFO L231 Difference]: Finished difference. Result has 98 places, 164 transitions, 1534 flow [2023-01-28 09:07:36,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1534, PETRI_PLACES=98, PETRI_TRANSITIONS=164} [2023-01-28 09:07:36,074 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2023-01-28 09:07:36,074 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 164 transitions, 1534 flow [2023-01-28 09:07:36,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 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) [2023-01-28 09:07:36,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:36,074 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:36,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:07:36,074 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:07:36,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash -345962665, now seen corresponding path program 1 times [2023-01-28 09:07:36,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:36,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825107773] [2023-01-28 09:07:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:36,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:36,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825107773] [2023-01-28 09:07:36,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825107773] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:07:36,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100133731] [2023-01-28 09:07:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:36,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:07:36,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:07:36,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:07:36,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 09:07:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:36,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 09:07:36,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:07:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:36,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:07:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:36,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100133731] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:07:36,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:07:36,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 09:07:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776988826] [2023-01-28 09:07:36,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:07:36,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:07:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:36,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:07:36,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:07:36,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-28 09:07:36,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 164 transitions, 1534 flow. Second operand has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2023-01-28 09:07:36,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:36,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-28 09:07:36,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:42,050 INFO L130 PetriNetUnfolder]: 21832/30378 cut-off events. [2023-01-28 09:07:42,050 INFO L131 PetriNetUnfolder]: For 89086/89086 co-relation queries the response was YES. [2023-01-28 09:07:42,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112234 conditions, 30378 events. 21832/30378 cut-off events. For 89086/89086 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 168731 event pairs, 6353 based on Foata normal form. 4/26240 useless extension candidates. Maximal degree in co-relation 112120. Up to 27534 conditions per place. [2023-01-28 09:07:42,272 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 176 selfloop transitions, 12 changer transitions 53/241 dead transitions. [2023-01-28 09:07:42,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 241 transitions, 2573 flow [2023-01-28 09:07:42,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:07:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:07:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2695 transitions. [2023-01-28 09:07:42,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189987562189055 [2023-01-28 09:07:42,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2695 transitions. [2023-01-28 09:07:42,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2695 transitions. [2023-01-28 09:07:42,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:42,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2695 transitions. [2023-01-28 09:07:42,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 673.75) internal successors, (2695), 4 states have internal predecessors, (2695), 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) [2023-01-28 09:07:42,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 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) [2023-01-28 09:07:42,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 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) [2023-01-28 09:07:42,282 INFO L175 Difference]: Start difference. First operand has 98 places, 164 transitions, 1534 flow. Second operand 4 states and 2695 transitions. [2023-01-28 09:07:42,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 241 transitions, 2573 flow [2023-01-28 09:07:42,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 241 transitions, 2532 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-01-28 09:07:42,946 INFO L231 Difference]: Finished difference. Result has 103 places, 154 transitions, 1463 flow [2023-01-28 09:07:42,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1463, PETRI_PLACES=103, PETRI_TRANSITIONS=154} [2023-01-28 09:07:42,946 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2023-01-28 09:07:42,946 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 154 transitions, 1463 flow [2023-01-28 09:07:42,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2023-01-28 09:07:42,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:42,950 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:42,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 09:07:43,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 09:07:43,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:07:43,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1281119567, now seen corresponding path program 2 times [2023-01-28 09:07:43,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:43,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539832359] [2023-01-28 09:07:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:43,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 09:07:43,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:43,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539832359] [2023-01-28 09:07:43,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539832359] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:43,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:43,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:07:43,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471063363] [2023-01-28 09:07:43,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:43,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:07:43,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:43,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:07:43,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:07:43,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 642 out of 1608 [2023-01-28 09:07:43,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 154 transitions, 1463 flow. Second operand has 5 states, 5 states have (on average 646.8) internal successors, (3234), 5 states have internal predecessors, (3234), 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) [2023-01-28 09:07:43,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:43,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 642 of 1608 [2023-01-28 09:07:43,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:48,622 INFO L130 PetriNetUnfolder]: 23686/33394 cut-off events. [2023-01-28 09:07:48,622 INFO L131 PetriNetUnfolder]: For 83084/83084 co-relation queries the response was YES. [2023-01-28 09:07:48,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116472 conditions, 33394 events. 23686/33394 cut-off events. For 83084/83084 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 193830 event pairs, 10465 based on Foata normal form. 4/29010 useless extension candidates. Maximal degree in co-relation 116370. Up to 25764 conditions per place. [2023-01-28 09:07:48,794 INFO L137 encePairwiseOnDemand]: 1598/1608 looper letters, 216 selfloop transitions, 25 changer transitions 37/278 dead transitions. [2023-01-28 09:07:48,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 278 transitions, 2720 flow [2023-01-28 09:07:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:07:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:07:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3352 transitions. [2023-01-28 09:07:48,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41691542288557215 [2023-01-28 09:07:48,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3352 transitions. [2023-01-28 09:07:48,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3352 transitions. [2023-01-28 09:07:48,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:48,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3352 transitions. [2023-01-28 09:07:48,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 670.4) internal successors, (3352), 5 states have internal predecessors, (3352), 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) [2023-01-28 09:07:48,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:48,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 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) [2023-01-28 09:07:48,809 INFO L175 Difference]: Start difference. First operand has 103 places, 154 transitions, 1463 flow. Second operand 5 states and 3352 transitions. [2023-01-28 09:07:48,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 278 transitions, 2720 flow [2023-01-28 09:07:49,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 278 transitions, 2671 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-01-28 09:07:49,469 INFO L231 Difference]: Finished difference. Result has 108 places, 151 transitions, 1399 flow [2023-01-28 09:07:49,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1399, PETRI_PLACES=108, PETRI_TRANSITIONS=151} [2023-01-28 09:07:49,470 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2023-01-28 09:07:49,470 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 151 transitions, 1399 flow [2023-01-28 09:07:49,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 646.8) internal successors, (3234), 5 states have internal predecessors, (3234), 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) [2023-01-28 09:07:49,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:49,471 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:49,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 09:07:49,471 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:07:49,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:49,472 INFO L85 PathProgramCache]: Analyzing trace with hash 774602130, now seen corresponding path program 1 times [2023-01-28 09:07:49,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:49,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313027493] [2023-01-28 09:07:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:49,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313027493] [2023-01-28 09:07:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313027493] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:07:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427512330] [2023-01-28 09:07:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:51,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:07:51,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:07:51,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:07:51,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 09:07:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:52,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 09:07:52,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:07:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:52,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:07:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:07:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427512330] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:07:53,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:07:53,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 18 [2023-01-28 09:07:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075774516] [2023-01-28 09:07:53,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:07:53,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 09:07:53,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:53,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 09:07:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-01-28 09:07:53,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 538 out of 1608 [2023-01-28 09:07:53,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 151 transitions, 1399 flow. Second operand has 19 states, 19 states have (on average 542.0) internal successors, (10298), 19 states have internal predecessors, (10298), 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) [2023-01-28 09:07:53,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:53,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 538 of 1608 [2023-01-28 09:07:53,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:08:10,773 INFO L130 PetriNetUnfolder]: 60488/84802 cut-off events. [2023-01-28 09:08:10,774 INFO L131 PetriNetUnfolder]: For 210570/210570 co-relation queries the response was YES. [2023-01-28 09:08:11,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300185 conditions, 84802 events. 60488/84802 cut-off events. For 210570/210570 co-relation queries the response was YES. Maximal size of possible extension queue 2048. Compared 550289 event pairs, 2556 based on Foata normal form. 95/73114 useless extension candidates. Maximal degree in co-relation 300067. Up to 20483 conditions per place. [2023-01-28 09:08:11,532 INFO L137 encePairwiseOnDemand]: 1584/1608 looper letters, 804 selfloop transitions, 372 changer transitions 215/1391 dead transitions. [2023-01-28 09:08:11,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1391 transitions, 12469 flow [2023-01-28 09:08:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-01-28 09:08:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-01-28 09:08:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 30379 transitions. [2023-01-28 09:08:11,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434984170058797 [2023-01-28 09:08:11,572 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 30379 transitions. [2023-01-28 09:08:11,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 30379 transitions. [2023-01-28 09:08:11,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:08:11,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 30379 transitions. [2023-01-28 09:08:11,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 552.3454545454546) internal successors, (30379), 55 states have internal predecessors, (30379), 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) [2023-01-28 09:08:11,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 1608.0) internal successors, (90048), 56 states have internal predecessors, (90048), 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) [2023-01-28 09:08:11,677 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 1608.0) internal successors, (90048), 56 states have internal predecessors, (90048), 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) [2023-01-28 09:08:11,677 INFO L175 Difference]: Start difference. First operand has 108 places, 151 transitions, 1399 flow. Second operand 55 states and 30379 transitions. [2023-01-28 09:08:11,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1391 transitions, 12469 flow [2023-01-28 09:08:17,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 1391 transitions, 12134 flow, removed 133 selfloop flow, removed 6 redundant places. [2023-01-28 09:08:17,641 INFO L231 Difference]: Finished difference. Result has 202 places, 522 transitions, 6233 flow [2023-01-28 09:08:17,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=6233, PETRI_PLACES=202, PETRI_TRANSITIONS=522} [2023-01-28 09:08:17,642 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 156 predicate places. [2023-01-28 09:08:17,642 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 522 transitions, 6233 flow [2023-01-28 09:08:17,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 542.0) internal successors, (10298), 19 states have internal predecessors, (10298), 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) [2023-01-28 09:08:17,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:08:17,643 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:08:17,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 09:08:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 09:08:17,844 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:08:17,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:08:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 138443101, now seen corresponding path program 1 times [2023-01-28 09:08:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:08:17,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549791845] [2023-01-28 09:08:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:17,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:08:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:08:18,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:08:18,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549791845] [2023-01-28 09:08:18,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549791845] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:08:18,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368196077] [2023-01-28 09:08:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:18,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:08:18,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:08:18,160 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:08:18,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 09:08:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:18,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 09:08:18,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:08:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:08:18,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:08:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:08:18,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368196077] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:08:18,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:08:18,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 09:08:18,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609057898] [2023-01-28 09:08:18,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:08:18,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:08:18,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:08:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:08:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:08:18,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-28 09:08:18,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 522 transitions, 6233 flow. Second operand has 6 states, 6 states have (on average 660.0) internal successors, (3960), 6 states have internal predecessors, (3960), 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) [2023-01-28 09:08:18,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:08:18,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-28 09:08:18,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:08:36,014 INFO L130 PetriNetUnfolder]: 56846/79425 cut-off events. [2023-01-28 09:08:36,014 INFO L131 PetriNetUnfolder]: For 820434/820434 co-relation queries the response was YES. [2023-01-28 09:08:37,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415880 conditions, 79425 events. 56846/79425 cut-off events. For 820434/820434 co-relation queries the response was YES. Maximal size of possible extension queue 1911. Compared 509818 event pairs, 20760 based on Foata normal form. 2/71097 useless extension candidates. Maximal degree in co-relation 415718. Up to 78712 conditions per place. [2023-01-28 09:08:37,386 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 514 selfloop transitions, 17 changer transitions 34/565 dead transitions. [2023-01-28 09:08:37,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 565 transitions, 7799 flow [2023-01-28 09:08:37,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:08:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:08:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2682 transitions. [2023-01-28 09:08:37,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41697761194029853 [2023-01-28 09:08:37,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2682 transitions. [2023-01-28 09:08:37,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2682 transitions. [2023-01-28 09:08:37,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:08:37,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2682 transitions. [2023-01-28 09:08:37,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 670.5) internal successors, (2682), 4 states have internal predecessors, (2682), 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) [2023-01-28 09:08:37,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 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) [2023-01-28 09:08:37,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 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) [2023-01-28 09:08:37,396 INFO L175 Difference]: Start difference. First operand has 202 places, 522 transitions, 6233 flow. Second operand 4 states and 2682 transitions. [2023-01-28 09:08:37,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 565 transitions, 7799 flow [2023-01-28 09:08:47,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 565 transitions, 7622 flow, removed 83 selfloop flow, removed 12 redundant places. [2023-01-28 09:08:47,301 INFO L231 Difference]: Finished difference. Result has 182 places, 520 transitions, 6152 flow [2023-01-28 09:08:47,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=6067, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6152, PETRI_PLACES=182, PETRI_TRANSITIONS=520} [2023-01-28 09:08:47,301 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 136 predicate places. [2023-01-28 09:08:47,301 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 520 transitions, 6152 flow [2023-01-28 09:08:47,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 660.0) internal successors, (3960), 6 states have internal predecessors, (3960), 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) [2023-01-28 09:08:47,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:08:47,302 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:08:47,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 09:08:47,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:08:47,503 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:08:47,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:08:47,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1248017317, now seen corresponding path program 2 times [2023-01-28 09:08:47,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:08:47,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274448401] [2023-01-28 09:08:47,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:47,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:08:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 09:08:47,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:08:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274448401] [2023-01-28 09:08:47,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274448401] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:08:47,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:08:47,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:08:47,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838102618] [2023-01-28 09:08:47,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:08:47,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:08:47,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:08:47,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:08:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:08:47,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-28 09:08:47,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 520 transitions, 6152 flow. Second operand has 4 states, 4 states have (on average 657.5) internal successors, (2630), 4 states have internal predecessors, (2630), 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) [2023-01-28 09:08:47,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:08:47,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-28 09:08:47,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:09:04,637 INFO L130 PetriNetUnfolder]: 56465/78816 cut-off events. [2023-01-28 09:09:04,637 INFO L131 PetriNetUnfolder]: For 749513/749513 co-relation queries the response was YES. [2023-01-28 09:09:05,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393717 conditions, 78816 events. 56465/78816 cut-off events. For 749513/749513 co-relation queries the response was YES. Maximal size of possible extension queue 1902. Compared 504732 event pairs, 27498 based on Foata normal form. 2/70516 useless extension candidates. Maximal degree in co-relation 393584. Up to 78291 conditions per place. [2023-01-28 09:09:05,816 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 508 selfloop transitions, 0 changer transitions 41/549 dead transitions. [2023-01-28 09:09:05,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 549 transitions, 7461 flow [2023-01-28 09:09:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:09:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:09:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2676 transitions. [2023-01-28 09:09:05,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416044776119403 [2023-01-28 09:09:05,819 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2676 transitions. [2023-01-28 09:09:05,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2676 transitions. [2023-01-28 09:09:05,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:05,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2676 transitions. [2023-01-28 09:09:05,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 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) [2023-01-28 09:09:05,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 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) [2023-01-28 09:09:05,826 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 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) [2023-01-28 09:09:05,826 INFO L175 Difference]: Start difference. First operand has 182 places, 520 transitions, 6152 flow. Second operand 4 states and 2676 transitions. [2023-01-28 09:09:05,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 549 transitions, 7461 flow [2023-01-28 09:09:10,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 549 transitions, 7273 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-01-28 09:09:10,366 INFO L231 Difference]: Finished difference. Result has 176 places, 508 transitions, 5792 flow [2023-01-28 09:09:10,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=5972, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5792, PETRI_PLACES=176, PETRI_TRANSITIONS=508} [2023-01-28 09:09:10,366 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 130 predicate places. [2023-01-28 09:09:10,367 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 508 transitions, 5792 flow [2023-01-28 09:09:10,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 657.5) internal successors, (2630), 4 states have internal predecessors, (2630), 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) [2023-01-28 09:09:10,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:09:10,367 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:09:10,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 09:09:10,367 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:09:10,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:09:10,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1938677828, now seen corresponding path program 2 times [2023-01-28 09:09:10,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:09:10,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177383272] [2023-01-28 09:09:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:09:10,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:09:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:09:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:09:11,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:09:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177383272] [2023-01-28 09:09:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177383272] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:09:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583875489] [2023-01-28 09:09:11,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:09:11,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:09:11,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:09:11,033 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:09:11,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 09:09:11,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:09:11,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:09:11,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 09:09:11,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:09:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:09:11,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:09:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:09:12,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583875489] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:09:12,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:09:12,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-28 09:09:12,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332986039] [2023-01-28 09:09:12,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:09:12,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:09:12,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:09:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:09:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:09:12,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-28 09:09:12,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 508 transitions, 5792 flow. Second operand has 8 states, 8 states have (on average 637.25) internal successors, (5098), 8 states have internal predecessors, (5098), 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) [2023-01-28 09:09:12,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:09:12,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-28 09:09:12,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:09:32,337 INFO L130 PetriNetUnfolder]: 67930/94369 cut-off events. [2023-01-28 09:09:32,337 INFO L131 PetriNetUnfolder]: For 786519/786519 co-relation queries the response was YES. [2023-01-28 09:09:33,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466426 conditions, 94369 events. 67930/94369 cut-off events. For 786519/786519 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 609638 event pairs, 6942 based on Foata normal form. 104/83461 useless extension candidates. Maximal degree in co-relation 466358. Up to 49209 conditions per place. [2023-01-28 09:09:33,841 INFO L137 encePairwiseOnDemand]: 1600/1608 looper letters, 644 selfloop transitions, 92 changer transitions 49/785 dead transitions. [2023-01-28 09:09:33,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 785 transitions, 9791 flow [2023-01-28 09:09:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:09:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:09:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5238 transitions. [2023-01-28 09:09:33,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40718283582089554 [2023-01-28 09:09:33,845 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5238 transitions. [2023-01-28 09:09:33,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5238 transitions. [2023-01-28 09:09:33,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:33,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5238 transitions. [2023-01-28 09:09:33,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 654.75) internal successors, (5238), 8 states have internal predecessors, (5238), 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) [2023-01-28 09:09:33,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1608.0) internal successors, (14472), 9 states have internal predecessors, (14472), 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) [2023-01-28 09:09:33,853 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1608.0) internal successors, (14472), 9 states have internal predecessors, (14472), 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) [2023-01-28 09:09:33,853 INFO L175 Difference]: Start difference. First operand has 176 places, 508 transitions, 5792 flow. Second operand 8 states and 5238 transitions. [2023-01-28 09:09:33,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 785 transitions, 9791 flow [2023-01-28 09:09:39,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 785 transitions, 9400 flow, removed 136 selfloop flow, removed 8 redundant places. [2023-01-28 09:09:39,988 INFO L231 Difference]: Finished difference. Result has 171 places, 503 transitions, 5678 flow [2023-01-28 09:09:39,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=5126, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5678, PETRI_PLACES=171, PETRI_TRANSITIONS=503} [2023-01-28 09:09:39,988 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 125 predicate places. [2023-01-28 09:09:39,988 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 503 transitions, 5678 flow [2023-01-28 09:09:39,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 637.25) internal successors, (5098), 8 states have internal predecessors, (5098), 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) [2023-01-28 09:09:39,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:09:39,989 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:09:39,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 09:09:40,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 09:09:40,190 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:09:40,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:09:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash -42288596, now seen corresponding path program 3 times [2023-01-28 09:09:40,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:09:40,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751273852] [2023-01-28 09:09:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:09:40,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:09:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:09:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 09:09:42,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:09:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751273852] [2023-01-28 09:09:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751273852] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:09:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971366963] [2023-01-28 09:09:42,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:09:42,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:09:42,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:09:42,488 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:09:42,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 09:09:42,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:09:42,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:09:42,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 09:09:42,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:09:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 09:09:42,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:09:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971366963] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:09:42,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:09:42,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 17 [2023-01-28 09:09:42,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89024654] [2023-01-28 09:09:42,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:09:42,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:09:42,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:09:42,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:09:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:09:42,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-28 09:09:42,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 503 transitions, 5678 flow. Second operand has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 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) [2023-01-28 09:09:42,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:09:42,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-28 09:09:42,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand