/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 00:55:37,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 00:55:37,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 00:55:37,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 00:55:37,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 00:55:37,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 00:55:37,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 00:55:37,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 00:55:37,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 00:55:37,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 00:55:37,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 00:55:37,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 00:55:37,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 00:55:37,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 00:55:37,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 00:55:37,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 00:55:37,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 00:55:37,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 00:55:37,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 00:55:37,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 00:55:37,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 00:55:37,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 00:55:37,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 00:55:37,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 00:55:37,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 00:55:37,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 00:55:37,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 00:55:37,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 00:55:37,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 00:55:37,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 00:55:37,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 00:55:37,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 00:55:37,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 00:55:37,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 00:55:37,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 00:55:37,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 00:55:37,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-19 00:55:37,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 00:55:37,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 00:55:37,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 00:55:37,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 00:55:37,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 00:55:37,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 00:55:37,994 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 00:55:37,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 00:55:37,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 00:55:37,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 00:55:37,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 00:55:37,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 00:55:37,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 00:55:37,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 00:55:37,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 00:55:37,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 00:55:37,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 00:55:37,996 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 00:55:37,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 00:55:37,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 00:55:37,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 00:55:37,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 00:55:37,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 00:55:37,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:55:37,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 00:55:37,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 00:55:37,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 00:55:37,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 00:55:37,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 00:55:37,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 00:55:37,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 00:55:37,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 00:55:38,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 00:55:38,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 00:55:38,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 00:55:38,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 00:55:38,202 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 00:55:38,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-01-19 00:55:38,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23b60a9ac/87a5b71f769942a39502c705cf6e1821/FLAG8a087c7e4 [2022-01-19 00:55:38,650 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 00:55:38,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-01-19 00:55:38,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23b60a9ac/87a5b71f769942a39502c705cf6e1821/FLAG8a087c7e4 [2022-01-19 00:55:38,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23b60a9ac/87a5b71f769942a39502c705cf6e1821 [2022-01-19 00:55:38,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 00:55:38,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 00:55:38,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 00:55:38,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 00:55:38,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 00:55:38,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:38,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bed7cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38, skipping insertion in model container [2022-01-19 00:55:38,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:38,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 00:55:38,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 00:55:38,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2022-01-19 00:55:38,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:55:38,898 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 00:55:38,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2022-01-19 00:55:38,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:55:38,943 INFO L208 MainTranslator]: Completed translation [2022-01-19 00:55:38,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38 WrapperNode [2022-01-19 00:55:38,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 00:55:38,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 00:55:38,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 00:55:38,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 00:55:38,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:38,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:38,988 INFO L137 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2022-01-19 00:55:38,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 00:55:38,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 00:55:38,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 00:55:38,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 00:55:38,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:38,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:39,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:39,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:39,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:39,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:39,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:39,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 00:55:39,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 00:55:39,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 00:55:39,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 00:55:39,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (1/1) ... [2022-01-19 00:55:39,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:55:39,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:55:39,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 00:55:39,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 00:55:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 00:55:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 00:55:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 00:55:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 00:55:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 00:55:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 00:55:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 00:55:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 00:55:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 00:55:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 00:55:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 00:55:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 00:55:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 00:55:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 00:55:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 00:55:39,095 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 00:55:39,196 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 00:55:39,197 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 00:55:39,459 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 00:55:39,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 00:55:39,465 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-19 00:55:39,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:55:39 BoogieIcfgContainer [2022-01-19 00:55:39,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 00:55:39,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 00:55:39,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 00:55:39,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 00:55:39,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:55:38" (1/3) ... [2022-01-19 00:55:39,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360b2472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:55:39, skipping insertion in model container [2022-01-19 00:55:39,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:38" (2/3) ... [2022-01-19 00:55:39,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360b2472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:55:39, skipping insertion in model container [2022-01-19 00:55:39,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:55:39" (3/3) ... [2022-01-19 00:55:39,472 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-01-19 00:55:39,475 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 00:55:39,475 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 00:55:39,475 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 00:55:39,512 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,513 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,513 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,513 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,513 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,514 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,514 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,514 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,515 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,515 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,515 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,515 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,515 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,516 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,517 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,517 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,519 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,519 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,519 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,520 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,520 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,520 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,520 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,521 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,523 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,523 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,524 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,524 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,524 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,524 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,524 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,525 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,525 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,525 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,526 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,526 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,526 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,526 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,526 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,527 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,530 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,530 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,530 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,532 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,534 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,534 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,534 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,535 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,535 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,535 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,535 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,535 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,536 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,536 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,536 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,536 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,536 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,536 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,536 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,536 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,537 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,537 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,537 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,537 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,538 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,538 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,541 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,541 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,541 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,541 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,542 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,542 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,544 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,544 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,547 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,547 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:39,554 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 00:55:39,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 00:55:39,587 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 00:55:39,588 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 00:55:39,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 315 places, 340 transitions, 704 flow [2022-01-19 00:55:39,717 INFO L129 PetriNetUnfolder]: 35/337 cut-off events. [2022-01-19 00:55:39,717 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 00:55:39,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 337 events. 35/337 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 507 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-01-19 00:55:39,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 340 transitions, 704 flow [2022-01-19 00:55:39,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 326 transitions, 670 flow [2022-01-19 00:55:39,776 INFO L129 PetriNetUnfolder]: 35/325 cut-off events. [2022-01-19 00:55:39,776 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 00:55:39,777 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:39,777 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:39,778 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:55:39,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:39,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1863076525, now seen corresponding path program 1 times [2022-01-19 00:55:39,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:39,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687453587] [2022-01-19 00:55:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:39,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:40,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:40,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687453587] [2022-01-19 00:55:40,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687453587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:40,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:40,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 00:55:40,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192268982] [2022-01-19 00:55:40,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:40,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 00:55:40,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:40,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 00:55:40,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 00:55:40,078 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 340 [2022-01-19 00:55:40,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 326 transitions, 670 flow. Second operand has 2 states, 2 states have (on average 324.0) internal successors, (648), 2 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:40,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 340 [2022-01-19 00:55:40,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:40,144 INFO L129 PetriNetUnfolder]: 21/312 cut-off events. [2022-01-19 00:55:40,144 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-01-19 00:55:40,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 312 events. 21/312 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 499 event pairs, 0 based on Foata normal form. 20/303 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-01-19 00:55:40,149 INFO L132 encePairwiseOnDemand]: 326/340 looper letters, 6 selfloop transitions, 0 changer transitions 8/312 dead transitions. [2022-01-19 00:55:40,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 312 transitions, 654 flow [2022-01-19 00:55:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 00:55:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 00:55:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 658 transitions. [2022-01-19 00:55:40,163 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9676470588235294 [2022-01-19 00:55:40,163 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 658 transitions. [2022-01-19 00:55:40,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 658 transitions. [2022-01-19 00:55:40,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:40,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 658 transitions. [2022-01-19 00:55:40,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 329.0) internal successors, (658), 2 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,185 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,186 INFO L186 Difference]: Start difference. First operand has 301 places, 326 transitions, 670 flow. Second operand 2 states and 658 transitions. [2022-01-19 00:55:40,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 312 transitions, 654 flow [2022-01-19 00:55:40,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 312 transitions, 642 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 00:55:40,197 INFO L242 Difference]: Finished difference. Result has 296 places, 304 transitions, 614 flow [2022-01-19 00:55:40,199 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=614, PETRI_PLACES=296, PETRI_TRANSITIONS=304} [2022-01-19 00:55:40,202 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -5 predicate places. [2022-01-19 00:55:40,202 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 304 transitions, 614 flow [2022-01-19 00:55:40,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 324.0) internal successors, (648), 2 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,202 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:40,203 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:40,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 00:55:40,203 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:55:40,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:40,203 INFO L85 PathProgramCache]: Analyzing trace with hash -727196831, now seen corresponding path program 1 times [2022-01-19 00:55:40,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:40,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944315240] [2022-01-19 00:55:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:40,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:40,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:40,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944315240] [2022-01-19 00:55:40,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944315240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:40,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:40,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:55:40,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445345893] [2022-01-19 00:55:40,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:40,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:55:40,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:40,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:55:40,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:55:40,363 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-01-19 00:55:40,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 304 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:40,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-01-19 00:55:40,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:40,439 INFO L129 PetriNetUnfolder]: 50/489 cut-off events. [2022-01-19 00:55:40,439 INFO L130 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-01-19 00:55:40,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 489 events. 50/489 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1520 event pairs, 4 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 536. Up to 22 conditions per place. [2022-01-19 00:55:40,444 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 14 selfloop transitions, 2 changer transitions 0/310 dead transitions. [2022-01-19 00:55:40,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 310 transitions, 663 flow [2022-01-19 00:55:40,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:55:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:55:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-01-19 00:55:40,446 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9431372549019608 [2022-01-19 00:55:40,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-01-19 00:55:40,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-01-19 00:55:40,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:40,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-01-19 00:55:40,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,451 INFO L186 Difference]: Start difference. First operand has 296 places, 304 transitions, 614 flow. Second operand 3 states and 962 transitions. [2022-01-19 00:55:40,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 310 transitions, 663 flow [2022-01-19 00:55:40,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 310 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 00:55:40,458 INFO L242 Difference]: Finished difference. Result has 291 places, 304 transitions, 622 flow [2022-01-19 00:55:40,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=291, PETRI_TRANSITIONS=304} [2022-01-19 00:55:40,461 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -10 predicate places. [2022-01-19 00:55:40,461 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 304 transitions, 622 flow [2022-01-19 00:55:40,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,462 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:40,462 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:40,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 00:55:40,463 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:55:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1012256445, now seen corresponding path program 1 times [2022-01-19 00:55:40,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:40,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467343486] [2022-01-19 00:55:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:40,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:40,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:40,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467343486] [2022-01-19 00:55:40,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467343486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:40,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:40,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:55:40,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676199660] [2022-01-19 00:55:40,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:40,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:55:40,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:40,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:55:40,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:55:40,579 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-01-19 00:55:40,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 304 transitions, 622 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:40,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-01-19 00:55:40,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:40,659 INFO L129 PetriNetUnfolder]: 59/555 cut-off events. [2022-01-19 00:55:40,659 INFO L130 PetriNetUnfolder]: For 29/31 co-relation queries the response was YES. [2022-01-19 00:55:40,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 555 events. 59/555 cut-off events. For 29/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1896 event pairs, 12 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 618. Up to 37 conditions per place. [2022-01-19 00:55:40,664 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 12 selfloop transitions, 2 changer transitions 0/308 dead transitions. [2022-01-19 00:55:40,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 308 transitions, 661 flow [2022-01-19 00:55:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:55:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:55:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2022-01-19 00:55:40,666 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-01-19 00:55:40,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2022-01-19 00:55:40,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2022-01-19 00:55:40,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:40,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2022-01-19 00:55:40,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,670 INFO L186 Difference]: Start difference. First operand has 291 places, 304 transitions, 622 flow. Second operand 3 states and 960 transitions. [2022-01-19 00:55:40,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 308 transitions, 661 flow [2022-01-19 00:55:40,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 308 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:55:40,675 INFO L242 Difference]: Finished difference. Result has 292 places, 304 transitions, 626 flow [2022-01-19 00:55:40,675 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=626, PETRI_PLACES=292, PETRI_TRANSITIONS=304} [2022-01-19 00:55:40,677 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -9 predicate places. [2022-01-19 00:55:40,677 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 304 transitions, 626 flow [2022-01-19 00:55:40,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,678 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:40,678 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:40,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 00:55:40,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:55:40,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:40,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1896015817, now seen corresponding path program 1 times [2022-01-19 00:55:40,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:40,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678094454] [2022-01-19 00:55:40,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:40,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:40,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:40,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678094454] [2022-01-19 00:55:40,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678094454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:40,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:40,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:55:40,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065690568] [2022-01-19 00:55:40,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:40,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:55:40,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:55:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:55:40,740 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-01-19 00:55:40,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 304 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:40,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-01-19 00:55:40,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:40,824 INFO L129 PetriNetUnfolder]: 48/577 cut-off events. [2022-01-19 00:55:40,824 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2022-01-19 00:55:40,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 577 events. 48/577 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2014 event pairs, 9 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 643. Up to 33 conditions per place. [2022-01-19 00:55:40,829 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 13 selfloop transitions, 2 changer transitions 0/309 dead transitions. [2022-01-19 00:55:40,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 309 transitions, 670 flow [2022-01-19 00:55:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:55:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:55:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-01-19 00:55:40,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.942156862745098 [2022-01-19 00:55:40,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-01-19 00:55:40,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-01-19 00:55:40,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:40,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-01-19 00:55:40,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,837 INFO L186 Difference]: Start difference. First operand has 292 places, 304 transitions, 626 flow. Second operand 3 states and 961 transitions. [2022-01-19 00:55:40,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 309 transitions, 670 flow [2022-01-19 00:55:40,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 309 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:55:40,841 INFO L242 Difference]: Finished difference. Result has 293 places, 304 transitions, 630 flow [2022-01-19 00:55:40,842 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=630, PETRI_PLACES=293, PETRI_TRANSITIONS=304} [2022-01-19 00:55:40,843 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -8 predicate places. [2022-01-19 00:55:40,843 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 304 transitions, 630 flow [2022-01-19 00:55:40,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:40,844 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:40,844 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:40,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 00:55:40,844 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:55:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash -644485703, now seen corresponding path program 1 times [2022-01-19 00:55:40,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:40,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181950638] [2022-01-19 00:55:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:40,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:41,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:41,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181950638] [2022-01-19 00:55:41,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181950638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:41,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:41,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-19 00:55:41,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701453326] [2022-01-19 00:55:41,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:41,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-19 00:55:41,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:41,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-19 00:55:41,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-01-19 00:55:41,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 00:55:41,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 304 transitions, 630 flow. Second operand has 24 states, 24 states have (on average 227.95833333333334) internal successors, (5471), 24 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:41,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:41,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 00:55:41,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:44,466 INFO L129 PetriNetUnfolder]: 3486/12164 cut-off events. [2022-01-19 00:55:44,466 INFO L130 PetriNetUnfolder]: For 591/591 co-relation queries the response was YES. [2022-01-19 00:55:44,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17945 conditions, 12164 events. 3486/12164 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 132684 event pairs, 1817 based on Foata normal form. 8/10465 useless extension candidates. Maximal degree in co-relation 17938. Up to 1584 conditions per place. [2022-01-19 00:55:44,547 INFO L132 encePairwiseOnDemand]: 302/340 looper letters, 203 selfloop transitions, 35 changer transitions 12/462 dead transitions. [2022-01-19 00:55:44,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 462 transitions, 1467 flow [2022-01-19 00:55:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:55:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:55:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8126 transitions. [2022-01-19 00:55:44,558 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6828571428571428 [2022-01-19 00:55:44,559 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8126 transitions. [2022-01-19 00:55:44,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8126 transitions. [2022-01-19 00:55:44,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:44,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8126 transitions. [2022-01-19 00:55:44,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 232.17142857142858) internal successors, (8126), 35 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:44,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:44,591 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:44,591 INFO L186 Difference]: Start difference. First operand has 293 places, 304 transitions, 630 flow. Second operand 35 states and 8126 transitions. [2022-01-19 00:55:44,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 462 transitions, 1467 flow [2022-01-19 00:55:44,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 462 transitions, 1463 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:55:44,601 INFO L242 Difference]: Finished difference. Result has 346 places, 327 transitions, 832 flow [2022-01-19 00:55:44,601 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=832, PETRI_PLACES=346, PETRI_TRANSITIONS=327} [2022-01-19 00:55:44,602 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 45 predicate places. [2022-01-19 00:55:44,602 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 327 transitions, 832 flow [2022-01-19 00:55:44,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 227.95833333333334) internal successors, (5471), 24 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:44,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:44,604 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:44,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 00:55:44,604 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:55:44,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:44,604 INFO L85 PathProgramCache]: Analyzing trace with hash 774995195, now seen corresponding path program 2 times [2022-01-19 00:55:44,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:44,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741614931] [2022-01-19 00:55:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:44,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:45,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:45,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741614931] [2022-01-19 00:55:45,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741614931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:45,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:45,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-19 00:55:45,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350565838] [2022-01-19 00:55:45,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:45,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-19 00:55:45,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:45,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-19 00:55:45,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-19 00:55:45,254 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 00:55:45,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 327 transitions, 832 flow. Second operand has 27 states, 27 states have (on average 227.7037037037037) internal successors, (6148), 27 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:45,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:45,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 00:55:45,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:49,118 INFO L129 PetriNetUnfolder]: 4619/18481 cut-off events. [2022-01-19 00:55:49,119 INFO L130 PetriNetUnfolder]: For 3301/3339 co-relation queries the response was YES. [2022-01-19 00:55:49,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29141 conditions, 18481 events. 4619/18481 cut-off events. For 3301/3339 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 223761 event pairs, 2406 based on Foata normal form. 19/15946 useless extension candidates. Maximal degree in co-relation 29113. Up to 2682 conditions per place. [2022-01-19 00:55:49,272 INFO L132 encePairwiseOnDemand]: 303/340 looper letters, 231 selfloop transitions, 38 changer transitions 12/493 dead transitions. [2022-01-19 00:55:49,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 493 transitions, 1887 flow [2022-01-19 00:55:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:55:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:55:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 8601 transitions. [2022-01-19 00:55:49,286 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6837042925278219 [2022-01-19 00:55:49,286 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 8601 transitions. [2022-01-19 00:55:49,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 8601 transitions. [2022-01-19 00:55:49,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:49,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 8601 transitions. [2022-01-19 00:55:49,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 232.45945945945945) internal successors, (8601), 37 states have internal predecessors, (8601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:49,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 340.0) internal successors, (12920), 38 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:49,318 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 340.0) internal successors, (12920), 38 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:49,319 INFO L186 Difference]: Start difference. First operand has 346 places, 327 transitions, 832 flow. Second operand 37 states and 8601 transitions. [2022-01-19 00:55:49,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 493 transitions, 1887 flow [2022-01-19 00:55:49,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 493 transitions, 1805 flow, removed 35 selfloop flow, removed 12 redundant places. [2022-01-19 00:55:49,347 INFO L242 Difference]: Finished difference. Result has 376 places, 337 transitions, 985 flow [2022-01-19 00:55:49,347 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=985, PETRI_PLACES=376, PETRI_TRANSITIONS=337} [2022-01-19 00:55:49,348 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 75 predicate places. [2022-01-19 00:55:49,348 INFO L470 AbstractCegarLoop]: Abstraction has has 376 places, 337 transitions, 985 flow [2022-01-19 00:55:49,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 227.7037037037037) internal successors, (6148), 27 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:49,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:49,350 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:49,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 00:55:49,350 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:55:49,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:49,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1654135811, now seen corresponding path program 3 times [2022-01-19 00:55:49,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:49,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746852322] [2022-01-19 00:55:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:49,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:50,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:50,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746852322] [2022-01-19 00:55:50,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746852322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:50,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:50,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-19 00:55:50,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630033982] [2022-01-19 00:55:50,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:50,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 00:55:50,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:50,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 00:55:50,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 00:55:50,261 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 340 [2022-01-19 00:55:50,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 337 transitions, 985 flow. Second operand has 34 states, 34 states have (on average 224.1764705882353) internal successors, (7622), 34 states have internal predecessors, (7622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:50,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:50,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 340 [2022-01-19 00:55:50,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:55,388 INFO L129 PetriNetUnfolder]: 6090/22974 cut-off events. [2022-01-19 00:55:55,388 INFO L130 PetriNetUnfolder]: For 6886/6891 co-relation queries the response was YES. [2022-01-19 00:55:55,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37550 conditions, 22974 events. 6090/22974 cut-off events. For 6886/6891 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 288022 event pairs, 3330 based on Foata normal form. 10/19953 useless extension candidates. Maximal degree in co-relation 37515. Up to 1765 conditions per place. [2022-01-19 00:55:55,555 INFO L132 encePairwiseOnDemand]: 302/340 looper letters, 283 selfloop transitions, 42 changer transitions 13/547 dead transitions. [2022-01-19 00:55:55,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 547 transitions, 2228 flow [2022-01-19 00:55:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 00:55:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 00:55:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 9881 transitions. [2022-01-19 00:55:55,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6758549931600547 [2022-01-19 00:55:55,566 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 9881 transitions. [2022-01-19 00:55:55,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 9881 transitions. [2022-01-19 00:55:55,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:55,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 9881 transitions. [2022-01-19 00:55:55,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 229.7906976744186) internal successors, (9881), 43 states have internal predecessors, (9881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:55,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 340.0) internal successors, (14960), 44 states have internal predecessors, (14960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:55,597 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 340.0) internal successors, (14960), 44 states have internal predecessors, (14960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:55,597 INFO L186 Difference]: Start difference. First operand has 376 places, 337 transitions, 985 flow. Second operand 43 states and 9881 transitions. [2022-01-19 00:55:55,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 547 transitions, 2228 flow [2022-01-19 00:55:55,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 547 transitions, 2141 flow, removed 15 selfloop flow, removed 25 redundant places. [2022-01-19 00:55:55,619 INFO L242 Difference]: Finished difference. Result has 400 places, 340 transitions, 1055 flow [2022-01-19 00:55:55,620 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1055, PETRI_PLACES=400, PETRI_TRANSITIONS=340} [2022-01-19 00:55:55,620 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 99 predicate places. [2022-01-19 00:55:55,621 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 340 transitions, 1055 flow [2022-01-19 00:55:55,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 224.1764705882353) internal successors, (7622), 34 states have internal predecessors, (7622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:55,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:55,622 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:55,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 00:55:55,622 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:55:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:55,623 INFO L85 PathProgramCache]: Analyzing trace with hash 855339755, now seen corresponding path program 1 times [2022-01-19 00:55:55,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:55,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596201858] [2022-01-19 00:55:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:55,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:55,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:55,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596201858] [2022-01-19 00:55:55,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596201858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:55,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:55,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:55:55,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360606481] [2022-01-19 00:55:55,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:55,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:55:55,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:55:55,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:55:55,662 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:55:55,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 340 transitions, 1055 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:55,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:55,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:55:55,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:57,702 INFO L129 PetriNetUnfolder]: 2579/17203 cut-off events. [2022-01-19 00:55:57,702 INFO L130 PetriNetUnfolder]: For 3056/3222 co-relation queries the response was YES. [2022-01-19 00:55:57,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24275 conditions, 17203 events. 2579/17203 cut-off events. For 3056/3222 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 225731 event pairs, 1106 based on Foata normal form. 12/14899 useless extension candidates. Maximal degree in co-relation 24233. Up to 1742 conditions per place. [2022-01-19 00:55:57,802 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 38 selfloop transitions, 3 changer transitions 0/357 dead transitions. [2022-01-19 00:55:57,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 357 transitions, 1178 flow [2022-01-19 00:55:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:55:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:55:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1247 transitions. [2022-01-19 00:55:57,803 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9169117647058823 [2022-01-19 00:55:57,804 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1247 transitions. [2022-01-19 00:55:57,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1247 transitions. [2022-01-19 00:55:57,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:57,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1247 transitions. [2022-01-19 00:55:57,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:57,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:57,806 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:57,806 INFO L186 Difference]: Start difference. First operand has 400 places, 340 transitions, 1055 flow. Second operand 4 states and 1247 transitions. [2022-01-19 00:55:57,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 357 transitions, 1178 flow [2022-01-19 00:55:57,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 357 transitions, 1058 flow, removed 12 selfloop flow, removed 42 redundant places. [2022-01-19 00:55:57,847 INFO L242 Difference]: Finished difference. Result has 357 places, 341 transitions, 953 flow [2022-01-19 00:55:57,847 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=953, PETRI_PLACES=357, PETRI_TRANSITIONS=341} [2022-01-19 00:55:57,848 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 56 predicate places. [2022-01-19 00:55:57,848 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 341 transitions, 953 flow [2022-01-19 00:55:57,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:57,848 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:57,848 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:57,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 00:55:57,848 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:55:57,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1552621851, now seen corresponding path program 2 times [2022-01-19 00:55:57,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:57,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401410216] [2022-01-19 00:55:57,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:57,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:57,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:57,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401410216] [2022-01-19 00:55:57,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401410216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:57,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:57,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:55:57,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492718066] [2022-01-19 00:55:57,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:57,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:55:57,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:57,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:55:57,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:55:57,882 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:55:57,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 341 transitions, 953 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:57,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:57,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:55:57,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:00,840 INFO L129 PetriNetUnfolder]: 3384/26777 cut-off events. [2022-01-19 00:56:00,840 INFO L130 PetriNetUnfolder]: For 6136/6452 co-relation queries the response was YES. [2022-01-19 00:56:00,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36256 conditions, 26777 events. 3384/26777 cut-off events. For 6136/6452 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 399920 event pairs, 966 based on Foata normal form. 97/24799 useless extension candidates. Maximal degree in co-relation 36223. Up to 1892 conditions per place. [2022-01-19 00:56:01,014 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 53 selfloop transitions, 12 changer transitions 0/381 dead transitions. [2022-01-19 00:56:01,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 381 transitions, 1207 flow [2022-01-19 00:56:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:56:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:56:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2022-01-19 00:56:01,016 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9229411764705883 [2022-01-19 00:56:01,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2022-01-19 00:56:01,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2022-01-19 00:56:01,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:01,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2022-01-19 00:56:01,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:01,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:01,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:01,033 INFO L186 Difference]: Start difference. First operand has 357 places, 341 transitions, 953 flow. Second operand 5 states and 1569 transitions. [2022-01-19 00:56:01,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 381 transitions, 1207 flow [2022-01-19 00:56:01,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 381 transitions, 1199 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:56:01,075 INFO L242 Difference]: Finished difference. Result has 363 places, 353 transitions, 1051 flow [2022-01-19 00:56:01,076 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1051, PETRI_PLACES=363, PETRI_TRANSITIONS=353} [2022-01-19 00:56:01,076 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 62 predicate places. [2022-01-19 00:56:01,076 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 353 transitions, 1051 flow [2022-01-19 00:56:01,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:01,077 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:01,077 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:01,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 00:56:01,077 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:01,077 INFO L85 PathProgramCache]: Analyzing trace with hash 761523921, now seen corresponding path program 1 times [2022-01-19 00:56:01,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:01,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882726221] [2022-01-19 00:56:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:01,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:01,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:01,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882726221] [2022-01-19 00:56:01,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882726221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:01,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:01,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:56:01,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824732940] [2022-01-19 00:56:01,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:01,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:56:01,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:01,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:56:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:56:01,111 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:01,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 353 transitions, 1051 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:01,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:01,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:01,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:04,880 INFO L129 PetriNetUnfolder]: 4020/34788 cut-off events. [2022-01-19 00:56:04,880 INFO L130 PetriNetUnfolder]: For 10891/11161 co-relation queries the response was YES. [2022-01-19 00:56:05,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48950 conditions, 34788 events. 4020/34788 cut-off events. For 10891/11161 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 539664 event pairs, 1748 based on Foata normal form. 58/32497 useless extension candidates. Maximal degree in co-relation 48914. Up to 4047 conditions per place. [2022-01-19 00:56:05,189 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 52 selfloop transitions, 7 changer transitions 0/375 dead transitions. [2022-01-19 00:56:05,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 375 transitions, 1264 flow [2022-01-19 00:56:05,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:56:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:56:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2022-01-19 00:56:05,205 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-01-19 00:56:05,205 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2022-01-19 00:56:05,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2022-01-19 00:56:05,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:05,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2022-01-19 00:56:05,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:05,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:05,208 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:05,208 INFO L186 Difference]: Start difference. First operand has 363 places, 353 transitions, 1051 flow. Second operand 4 states and 1248 transitions. [2022-01-19 00:56:05,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 375 transitions, 1264 flow [2022-01-19 00:56:05,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 375 transitions, 1256 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-01-19 00:56:05,403 INFO L242 Difference]: Finished difference. Result has 368 places, 357 transitions, 1108 flow [2022-01-19 00:56:05,405 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1108, PETRI_PLACES=368, PETRI_TRANSITIONS=357} [2022-01-19 00:56:05,406 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 67 predicate places. [2022-01-19 00:56:05,406 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 357 transitions, 1108 flow [2022-01-19 00:56:05,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:05,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:05,406 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:05,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 00:56:05,406 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1326530775, now seen corresponding path program 1 times [2022-01-19 00:56:05,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:05,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131074568] [2022-01-19 00:56:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:05,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:05,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:05,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131074568] [2022-01-19 00:56:05,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131074568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:05,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:05,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:56:05,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931877387] [2022-01-19 00:56:05,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:05,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:56:05,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:05,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:56:05,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:56:05,444 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:05,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 357 transitions, 1108 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:05,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:05,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:05,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:09,232 INFO L129 PetriNetUnfolder]: 3952/34138 cut-off events. [2022-01-19 00:56:09,232 INFO L130 PetriNetUnfolder]: For 13278/13524 co-relation queries the response was YES. [2022-01-19 00:56:09,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48748 conditions, 34138 events. 3952/34138 cut-off events. For 13278/13524 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 527107 event pairs, 1670 based on Foata normal form. 20/31911 useless extension candidates. Maximal degree in co-relation 48709. Up to 4183 conditions per place. [2022-01-19 00:56:09,522 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 53 selfloop transitions, 8 changer transitions 0/377 dead transitions. [2022-01-19 00:56:09,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 377 transitions, 1341 flow [2022-01-19 00:56:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:56:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:56:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1246 transitions. [2022-01-19 00:56:09,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9161764705882353 [2022-01-19 00:56:09,524 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1246 transitions. [2022-01-19 00:56:09,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1246 transitions. [2022-01-19 00:56:09,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:09,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1246 transitions. [2022-01-19 00:56:09,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.5) internal successors, (1246), 4 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:09,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:09,527 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:09,527 INFO L186 Difference]: Start difference. First operand has 368 places, 357 transitions, 1108 flow. Second operand 4 states and 1246 transitions. [2022-01-19 00:56:09,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 377 transitions, 1341 flow [2022-01-19 00:56:09,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 377 transitions, 1337 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:56:09,608 INFO L242 Difference]: Finished difference. Result has 372 places, 363 transitions, 1213 flow [2022-01-19 00:56:09,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1213, PETRI_PLACES=372, PETRI_TRANSITIONS=363} [2022-01-19 00:56:09,609 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 71 predicate places. [2022-01-19 00:56:09,609 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 363 transitions, 1213 flow [2022-01-19 00:56:09,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:09,610 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:09,610 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:09,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 00:56:09,610 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash -436319363, now seen corresponding path program 2 times [2022-01-19 00:56:09,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:09,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501328034] [2022-01-19 00:56:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:09,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:09,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:09,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501328034] [2022-01-19 00:56:09,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501328034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:09,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:09,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:56:09,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011224857] [2022-01-19 00:56:09,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:09,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:56:09,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:56:09,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:56:09,641 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:09,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 363 transitions, 1213 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:09,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:09,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:09,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:13,391 INFO L129 PetriNetUnfolder]: 3861/33127 cut-off events. [2022-01-19 00:56:13,391 INFO L130 PetriNetUnfolder]: For 16691/16982 co-relation queries the response was YES. [2022-01-19 00:56:13,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48295 conditions, 33127 events. 3861/33127 cut-off events. For 16691/16982 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 508943 event pairs, 1196 based on Foata normal form. 103/30993 useless extension candidates. Maximal degree in co-relation 48254. Up to 2558 conditions per place. [2022-01-19 00:56:13,741 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 52 selfloop transitions, 18 changer transitions 0/386 dead transitions. [2022-01-19 00:56:13,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 386 transitions, 1457 flow [2022-01-19 00:56:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:56:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:56:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2022-01-19 00:56:13,743 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-01-19 00:56:13,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2022-01-19 00:56:13,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2022-01-19 00:56:13,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:13,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2022-01-19 00:56:13,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:13,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:13,746 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:13,746 INFO L186 Difference]: Start difference. First operand has 372 places, 363 transitions, 1213 flow. Second operand 4 states and 1248 transitions. [2022-01-19 00:56:13,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 386 transitions, 1457 flow [2022-01-19 00:56:13,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 386 transitions, 1455 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:56:13,838 INFO L242 Difference]: Finished difference. Result has 376 places, 366 transitions, 1303 flow [2022-01-19 00:56:13,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1303, PETRI_PLACES=376, PETRI_TRANSITIONS=366} [2022-01-19 00:56:13,839 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 75 predicate places. [2022-01-19 00:56:13,839 INFO L470 AbstractCegarLoop]: Abstraction has has 376 places, 366 transitions, 1303 flow [2022-01-19 00:56:13,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:13,839 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:13,839 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:13,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 00:56:13,839 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:13,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:13,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1008316741, now seen corresponding path program 1 times [2022-01-19 00:56:13,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:13,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243449174] [2022-01-19 00:56:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:13,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:13,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:13,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243449174] [2022-01-19 00:56:13,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243449174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:13,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:13,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 00:56:13,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613191108] [2022-01-19 00:56:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:13,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 00:56:13,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 00:56:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 00:56:13,888 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 340 [2022-01-19 00:56:13,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 366 transitions, 1303 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:13,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:13,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 340 [2022-01-19 00:56:13,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:16,064 INFO L129 PetriNetUnfolder]: 886/15274 cut-off events. [2022-01-19 00:56:16,064 INFO L130 PetriNetUnfolder]: For 8814/10372 co-relation queries the response was YES. [2022-01-19 00:56:16,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24091 conditions, 15274 events. 886/15274 cut-off events. For 8814/10372 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 219244 event pairs, 132 based on Foata normal form. 274/14619 useless extension candidates. Maximal degree in co-relation 24048. Up to 3915 conditions per place. [2022-01-19 00:56:16,169 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 64 selfloop transitions, 3 changer transitions 6/380 dead transitions. [2022-01-19 00:56:16,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 380 transitions, 1482 flow [2022-01-19 00:56:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:56:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:56:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-01-19 00:56:16,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8252100840336134 [2022-01-19 00:56:16,181 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-01-19 00:56:16,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-01-19 00:56:16,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:16,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-01-19 00:56:16,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:16,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:16,185 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:16,185 INFO L186 Difference]: Start difference. First operand has 376 places, 366 transitions, 1303 flow. Second operand 7 states and 1964 transitions. [2022-01-19 00:56:16,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 380 transitions, 1482 flow [2022-01-19 00:56:16,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 380 transitions, 1467 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:56:16,210 INFO L242 Difference]: Finished difference. Result has 386 places, 366 transitions, 1283 flow [2022-01-19 00:56:16,210 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1283, PETRI_PLACES=386, PETRI_TRANSITIONS=366} [2022-01-19 00:56:16,211 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 85 predicate places. [2022-01-19 00:56:16,211 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 366 transitions, 1283 flow [2022-01-19 00:56:16,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:16,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:16,211 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:16,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 00:56:16,211 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:16,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1945760589, now seen corresponding path program 1 times [2022-01-19 00:56:16,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:16,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450057725] [2022-01-19 00:56:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:16,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:16,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:16,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450057725] [2022-01-19 00:56:16,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450057725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:16,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:16,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 00:56:16,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285270179] [2022-01-19 00:56:16,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:16,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 00:56:16,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 00:56:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 00:56:16,255 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 340 [2022-01-19 00:56:16,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 366 transitions, 1283 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:16,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:16,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 340 [2022-01-19 00:56:16,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:18,275 INFO L129 PetriNetUnfolder]: 1020/15697 cut-off events. [2022-01-19 00:56:18,275 INFO L130 PetriNetUnfolder]: For 9513/11068 co-relation queries the response was YES. [2022-01-19 00:56:18,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25419 conditions, 15697 events. 1020/15697 cut-off events. For 9513/11068 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 225768 event pairs, 102 based on Foata normal form. 248/14877 useless extension candidates. Maximal degree in co-relation 25371. Up to 2837 conditions per place. [2022-01-19 00:56:18,385 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 61 selfloop transitions, 3 changer transitions 14/378 dead transitions. [2022-01-19 00:56:18,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 378 transitions, 1462 flow [2022-01-19 00:56:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:56:18,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:56:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-01-19 00:56:18,387 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8252100840336134 [2022-01-19 00:56:18,387 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-01-19 00:56:18,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-01-19 00:56:18,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:18,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-01-19 00:56:18,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:18,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:18,391 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:18,391 INFO L186 Difference]: Start difference. First operand has 386 places, 366 transitions, 1283 flow. Second operand 7 states and 1964 transitions. [2022-01-19 00:56:18,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 378 transitions, 1462 flow [2022-01-19 00:56:18,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 378 transitions, 1445 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-01-19 00:56:18,440 INFO L242 Difference]: Finished difference. Result has 389 places, 359 transitions, 1178 flow [2022-01-19 00:56:18,440 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1178, PETRI_PLACES=389, PETRI_TRANSITIONS=359} [2022-01-19 00:56:18,440 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 88 predicate places. [2022-01-19 00:56:18,440 INFO L470 AbstractCegarLoop]: Abstraction has has 389 places, 359 transitions, 1178 flow [2022-01-19 00:56:18,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:18,441 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:18,441 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:18,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 00:56:18,441 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:18,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash 728092825, now seen corresponding path program 1 times [2022-01-19 00:56:18,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:18,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691312229] [2022-01-19 00:56:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:18,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:18,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:18,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691312229] [2022-01-19 00:56:18,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691312229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:18,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:18,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:56:18,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681174204] [2022-01-19 00:56:18,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:18,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:56:18,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:18,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:56:18,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:56:18,482 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:18,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 359 transitions, 1178 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:18,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:18,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:18,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:22,162 INFO L129 PetriNetUnfolder]: 3557/30703 cut-off events. [2022-01-19 00:56:22,162 INFO L130 PetriNetUnfolder]: For 17651/18284 co-relation queries the response was YES. [2022-01-19 00:56:22,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47685 conditions, 30703 events. 3557/30703 cut-off events. For 17651/18284 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 474974 event pairs, 656 based on Foata normal form. 130/28895 useless extension candidates. Maximal degree in co-relation 47637. Up to 1895 conditions per place. [2022-01-19 00:56:22,528 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 56 selfloop transitions, 21 changer transitions 25/414 dead transitions. [2022-01-19 00:56:22,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 414 transitions, 1690 flow [2022-01-19 00:56:22,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:56:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:56:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2022-01-19 00:56:22,530 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9229411764705883 [2022-01-19 00:56:22,530 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2022-01-19 00:56:22,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2022-01-19 00:56:22,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:22,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2022-01-19 00:56:22,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:22,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:22,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:22,533 INFO L186 Difference]: Start difference. First operand has 389 places, 359 transitions, 1178 flow. Second operand 5 states and 1569 transitions. [2022-01-19 00:56:22,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 414 transitions, 1690 flow [2022-01-19 00:56:22,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 414 transitions, 1661 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 00:56:22,801 INFO L242 Difference]: Finished difference. Result has 386 places, 365 transitions, 1322 flow [2022-01-19 00:56:22,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1322, PETRI_PLACES=386, PETRI_TRANSITIONS=365} [2022-01-19 00:56:22,802 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 85 predicate places. [2022-01-19 00:56:22,802 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 365 transitions, 1322 flow [2022-01-19 00:56:22,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:22,802 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:22,802 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:22,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 00:56:22,803 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:22,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2052109271, now seen corresponding path program 2 times [2022-01-19 00:56:22,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:22,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491673383] [2022-01-19 00:56:22,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:22,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:22,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:22,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491673383] [2022-01-19 00:56:22,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491673383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:22,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:22,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:56:22,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136447373] [2022-01-19 00:56:22,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:22,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:56:22,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:22,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:56:22,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:56:22,855 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:22,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 365 transitions, 1322 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:22,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:22,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:22,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:26,159 INFO L129 PetriNetUnfolder]: 2763/26734 cut-off events. [2022-01-19 00:56:26,159 INFO L130 PetriNetUnfolder]: For 23794/24463 co-relation queries the response was YES. [2022-01-19 00:56:26,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42697 conditions, 26734 events. 2763/26734 cut-off events. For 23794/24463 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 399264 event pairs, 565 based on Foata normal form. 36/25186 useless extension candidates. Maximal degree in co-relation 42651. Up to 1392 conditions per place. [2022-01-19 00:56:26,515 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 73 selfloop transitions, 15 changer transitions 0/400 dead transitions. [2022-01-19 00:56:26,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 400 transitions, 1778 flow [2022-01-19 00:56:26,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:56:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:56:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 00:56:26,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 00:56:26,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 00:56:26,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 00:56:26,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:26,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 00:56:26,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:26,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:26,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:26,520 INFO L186 Difference]: Start difference. First operand has 386 places, 365 transitions, 1322 flow. Second operand 5 states and 1554 transitions. [2022-01-19 00:56:26,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 400 transitions, 1778 flow [2022-01-19 00:56:26,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 400 transitions, 1708 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-01-19 00:56:26,613 INFO L242 Difference]: Finished difference. Result has 378 places, 373 transitions, 1433 flow [2022-01-19 00:56:26,613 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1433, PETRI_PLACES=378, PETRI_TRANSITIONS=373} [2022-01-19 00:56:26,614 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 77 predicate places. [2022-01-19 00:56:26,614 INFO L470 AbstractCegarLoop]: Abstraction has has 378 places, 373 transitions, 1433 flow [2022-01-19 00:56:26,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:26,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:26,614 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:26,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 00:56:26,614 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:26,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1572503803, now seen corresponding path program 1 times [2022-01-19 00:56:26,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:26,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668991627] [2022-01-19 00:56:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:26,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:26,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:26,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668991627] [2022-01-19 00:56:26,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668991627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:26,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:26,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:56:26,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569053900] [2022-01-19 00:56:26,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:26,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:56:26,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:56:26,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:56:26,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:56:26,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 373 transitions, 1433 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:26,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:26,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:56:26,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:31,794 INFO L129 PetriNetUnfolder]: 9043/38001 cut-off events. [2022-01-19 00:56:31,794 INFO L130 PetriNetUnfolder]: For 22109/23019 co-relation queries the response was YES. [2022-01-19 00:56:32,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67137 conditions, 38001 events. 9043/38001 cut-off events. For 22109/23019 co-relation queries the response was YES. Maximal size of possible extension queue 2516. Compared 570437 event pairs, 5813 based on Foata normal form. 69/34460 useless extension candidates. Maximal degree in co-relation 67092. Up to 14979 conditions per place. [2022-01-19 00:56:32,220 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 102 selfloop transitions, 12 changer transitions 17/439 dead transitions. [2022-01-19 00:56:32,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 439 transitions, 1909 flow [2022-01-19 00:56:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 00:56:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 00:56:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3558 transitions. [2022-01-19 00:56:32,222 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8049773755656109 [2022-01-19 00:56:32,222 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3558 transitions. [2022-01-19 00:56:32,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3558 transitions. [2022-01-19 00:56:32,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:32,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3558 transitions. [2022-01-19 00:56:32,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.6923076923077) internal successors, (3558), 13 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:32,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:32,228 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:32,228 INFO L186 Difference]: Start difference. First operand has 378 places, 373 transitions, 1433 flow. Second operand 13 states and 3558 transitions. [2022-01-19 00:56:32,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 439 transitions, 1909 flow [2022-01-19 00:56:32,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 439 transitions, 1905 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 00:56:32,275 INFO L242 Difference]: Finished difference. Result has 399 places, 384 transitions, 1518 flow [2022-01-19 00:56:32,275 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1518, PETRI_PLACES=399, PETRI_TRANSITIONS=384} [2022-01-19 00:56:32,276 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 98 predicate places. [2022-01-19 00:56:32,276 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 384 transitions, 1518 flow [2022-01-19 00:56:32,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:32,276 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:32,276 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:32,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 00:56:32,276 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash 113123015, now seen corresponding path program 3 times [2022-01-19 00:56:32,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:32,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655803203] [2022-01-19 00:56:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:32,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:32,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:32,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655803203] [2022-01-19 00:56:32,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655803203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:32,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:32,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:56:32,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424382521] [2022-01-19 00:56:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:32,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:56:32,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:56:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:56:32,316 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:32,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 384 transitions, 1518 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:32,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:32,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:32,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:36,003 INFO L129 PetriNetUnfolder]: 2786/27583 cut-off events. [2022-01-19 00:56:36,003 INFO L130 PetriNetUnfolder]: For 25452/25788 co-relation queries the response was YES. [2022-01-19 00:56:36,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49420 conditions, 27583 events. 2786/27583 cut-off events. For 25452/25788 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 424393 event pairs, 723 based on Foata normal form. 82/26028 useless extension candidates. Maximal degree in co-relation 49365. Up to 1617 conditions per place. [2022-01-19 00:56:36,235 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 61 selfloop transitions, 29 changer transitions 1/414 dead transitions. [2022-01-19 00:56:36,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 414 transitions, 1907 flow [2022-01-19 00:56:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:56:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:56:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1562 transitions. [2022-01-19 00:56:36,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9188235294117647 [2022-01-19 00:56:36,236 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1562 transitions. [2022-01-19 00:56:36,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1562 transitions. [2022-01-19 00:56:36,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:36,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1562 transitions. [2022-01-19 00:56:36,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.4) internal successors, (1562), 5 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:36,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:36,239 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:36,239 INFO L186 Difference]: Start difference. First operand has 399 places, 384 transitions, 1518 flow. Second operand 5 states and 1562 transitions. [2022-01-19 00:56:36,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 414 transitions, 1907 flow [2022-01-19 00:56:36,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 414 transitions, 1903 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 00:56:36,471 INFO L242 Difference]: Finished difference. Result has 403 places, 391 transitions, 1730 flow [2022-01-19 00:56:36,471 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1730, PETRI_PLACES=403, PETRI_TRANSITIONS=391} [2022-01-19 00:56:36,472 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 102 predicate places. [2022-01-19 00:56:36,472 INFO L470 AbstractCegarLoop]: Abstraction has has 403 places, 391 transitions, 1730 flow [2022-01-19 00:56:36,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:36,472 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:36,472 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:36,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 00:56:36,472 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:36,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash 94491573, now seen corresponding path program 4 times [2022-01-19 00:56:36,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:36,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744461236] [2022-01-19 00:56:36,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:36,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:36,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:36,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744461236] [2022-01-19 00:56:36,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744461236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:36,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:36,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:56:36,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715945620] [2022-01-19 00:56:36,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:36,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:56:36,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:36,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:56:36,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:56:36,521 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:36,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 391 transitions, 1730 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:36,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:36,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:36,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:40,414 INFO L129 PetriNetUnfolder]: 3027/30964 cut-off events. [2022-01-19 00:56:40,414 INFO L130 PetriNetUnfolder]: For 35000/35336 co-relation queries the response was YES. [2022-01-19 00:56:40,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54041 conditions, 30964 events. 3027/30964 cut-off events. For 35000/35336 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 478622 event pairs, 582 based on Foata normal form. 88/29115 useless extension candidates. Maximal degree in co-relation 53984. Up to 2365 conditions per place. [2022-01-19 00:56:40,780 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 61 selfloop transitions, 28 changer transitions 0/412 dead transitions. [2022-01-19 00:56:40,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 412 transitions, 2039 flow [2022-01-19 00:56:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:56:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:56:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-01-19 00:56:40,781 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9170588235294118 [2022-01-19 00:56:40,781 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-01-19 00:56:40,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-01-19 00:56:40,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:40,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-01-19 00:56:40,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:40,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:40,784 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:40,784 INFO L186 Difference]: Start difference. First operand has 403 places, 391 transitions, 1730 flow. Second operand 5 states and 1559 transitions. [2022-01-19 00:56:40,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 412 transitions, 2039 flow [2022-01-19 00:56:40,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 412 transitions, 2029 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-01-19 00:56:40,989 INFO L242 Difference]: Finished difference. Result has 410 places, 395 transitions, 1894 flow [2022-01-19 00:56:40,989 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1894, PETRI_PLACES=410, PETRI_TRANSITIONS=395} [2022-01-19 00:56:40,990 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 109 predicate places. [2022-01-19 00:56:40,990 INFO L470 AbstractCegarLoop]: Abstraction has has 410 places, 395 transitions, 1894 flow [2022-01-19 00:56:40,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:40,990 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:40,990 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:40,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 00:56:40,990 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:40,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:40,991 INFO L85 PathProgramCache]: Analyzing trace with hash 798531221, now seen corresponding path program 1 times [2022-01-19 00:56:40,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:40,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360136553] [2022-01-19 00:56:40,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:40,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:41,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:41,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360136553] [2022-01-19 00:56:41,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360136553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:41,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:41,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:56:41,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615052100] [2022-01-19 00:56:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:41,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:56:41,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:56:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:56:41,026 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:41,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 395 transitions, 1894 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:41,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:41,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:41,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:45,309 INFO L129 PetriNetUnfolder]: 3013/33069 cut-off events. [2022-01-19 00:56:45,309 INFO L130 PetriNetUnfolder]: For 44463/44958 co-relation queries the response was YES. [2022-01-19 00:56:45,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58760 conditions, 33069 events. 3013/33069 cut-off events. For 44463/44958 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 522784 event pairs, 785 based on Foata normal form. 143/31160 useless extension candidates. Maximal degree in co-relation 58699. Up to 1844 conditions per place. [2022-01-19 00:56:45,638 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 112 selfloop transitions, 8 changer transitions 0/443 dead transitions. [2022-01-19 00:56:45,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 443 transitions, 2640 flow [2022-01-19 00:56:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:56:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:56:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 00:56:45,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 00:56:45,640 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 00:56:45,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 00:56:45,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:45,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 00:56:45,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:45,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:45,642 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:45,642 INFO L186 Difference]: Start difference. First operand has 410 places, 395 transitions, 1894 flow. Second operand 5 states and 1554 transitions. [2022-01-19 00:56:45,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 443 transitions, 2640 flow [2022-01-19 00:56:45,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 443 transitions, 2630 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-01-19 00:56:45,954 INFO L242 Difference]: Finished difference. Result has 416 places, 397 transitions, 1938 flow [2022-01-19 00:56:45,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1938, PETRI_PLACES=416, PETRI_TRANSITIONS=397} [2022-01-19 00:56:45,954 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 115 predicate places. [2022-01-19 00:56:45,955 INFO L470 AbstractCegarLoop]: Abstraction has has 416 places, 397 transitions, 1938 flow [2022-01-19 00:56:45,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:45,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:45,955 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:45,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 00:56:45,955 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:45,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash 581407537, now seen corresponding path program 2 times [2022-01-19 00:56:45,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:45,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035536228] [2022-01-19 00:56:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:45,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:45,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:45,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035536228] [2022-01-19 00:56:45,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035536228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:45,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:45,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:56:45,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016327953] [2022-01-19 00:56:45,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:45,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:56:45,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:56:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:56:45,999 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:46,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 397 transitions, 1938 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:46,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:46,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:46,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:51,174 INFO L129 PetriNetUnfolder]: 3627/38791 cut-off events. [2022-01-19 00:56:51,174 INFO L130 PetriNetUnfolder]: For 52350/52893 co-relation queries the response was YES. [2022-01-19 00:56:51,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71025 conditions, 38791 events. 3627/38791 cut-off events. For 52350/52893 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 634805 event pairs, 944 based on Foata normal form. 56/36573 useless extension candidates. Maximal degree in co-relation 70961. Up to 2970 conditions per place. [2022-01-19 00:56:51,511 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 95 selfloop transitions, 27 changer transitions 0/445 dead transitions. [2022-01-19 00:56:51,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 445 transitions, 2662 flow [2022-01-19 00:56:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:56:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:56:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1561 transitions. [2022-01-19 00:56:51,513 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.918235294117647 [2022-01-19 00:56:51,513 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1561 transitions. [2022-01-19 00:56:51,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1561 transitions. [2022-01-19 00:56:51,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:51,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1561 transitions. [2022-01-19 00:56:51,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.2) internal successors, (1561), 5 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:51,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:51,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:51,515 INFO L186 Difference]: Start difference. First operand has 416 places, 397 transitions, 1938 flow. Second operand 5 states and 1561 transitions. [2022-01-19 00:56:51,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 445 transitions, 2662 flow [2022-01-19 00:56:52,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 445 transitions, 2643 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-01-19 00:56:52,017 INFO L242 Difference]: Finished difference. Result has 422 places, 409 transitions, 2196 flow [2022-01-19 00:56:52,017 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2196, PETRI_PLACES=422, PETRI_TRANSITIONS=409} [2022-01-19 00:56:52,018 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 121 predicate places. [2022-01-19 00:56:52,018 INFO L470 AbstractCegarLoop]: Abstraction has has 422 places, 409 transitions, 2196 flow [2022-01-19 00:56:52,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:52,018 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:52,018 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:52,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 00:56:52,018 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:52,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash 121606111, now seen corresponding path program 5 times [2022-01-19 00:56:52,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:52,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430041749] [2022-01-19 00:56:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:52,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:52,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:52,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430041749] [2022-01-19 00:56:52,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430041749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:52,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:52,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:56:52,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296733046] [2022-01-19 00:56:52,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:52,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:56:52,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:56:52,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:56:52,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:56:52,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 409 transitions, 2196 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:52,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:52,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:56:52,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:57,480 INFO L129 PetriNetUnfolder]: 3736/40258 cut-off events. [2022-01-19 00:56:57,481 INFO L130 PetriNetUnfolder]: For 61556/62051 co-relation queries the response was YES. [2022-01-19 00:56:57,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73868 conditions, 40258 events. 3736/40258 cut-off events. For 61556/62051 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 655201 event pairs, 936 based on Foata normal form. 70/37872 useless extension candidates. Maximal degree in co-relation 73801. Up to 3193 conditions per place. [2022-01-19 00:56:57,916 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 80 selfloop transitions, 25 changer transitions 0/428 dead transitions. [2022-01-19 00:56:57,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 428 transitions, 2500 flow [2022-01-19 00:56:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:56:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:56:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1557 transitions. [2022-01-19 00:56:57,918 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9158823529411765 [2022-01-19 00:56:57,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1557 transitions. [2022-01-19 00:56:57,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1557 transitions. [2022-01-19 00:56:57,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:57,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1557 transitions. [2022-01-19 00:56:57,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:57,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:57,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:57,921 INFO L186 Difference]: Start difference. First operand has 422 places, 409 transitions, 2196 flow. Second operand 5 states and 1557 transitions. [2022-01-19 00:56:57,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 428 transitions, 2500 flow [2022-01-19 00:56:58,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 428 transitions, 2440 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-01-19 00:56:58,464 INFO L242 Difference]: Finished difference. Result has 426 places, 408 transitions, 2175 flow [2022-01-19 00:56:58,464 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2175, PETRI_PLACES=426, PETRI_TRANSITIONS=408} [2022-01-19 00:56:58,465 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 125 predicate places. [2022-01-19 00:56:58,465 INFO L470 AbstractCegarLoop]: Abstraction has has 426 places, 408 transitions, 2175 flow [2022-01-19 00:56:58,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:58,465 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:58,465 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:58,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 00:56:58,465 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:56:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash 32140543, now seen corresponding path program 2 times [2022-01-19 00:56:58,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:58,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527430664] [2022-01-19 00:56:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:58,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:56:58,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:58,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527430664] [2022-01-19 00:56:58,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527430664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:58,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:58,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:56:58,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282231801] [2022-01-19 00:56:58,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:58,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:56:58,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:58,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:56:58,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:56:58,524 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:56:58,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 408 transitions, 2175 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:56:58,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:58,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:56:58,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:57:07,158 INFO L129 PetriNetUnfolder]: 13285/55387 cut-off events. [2022-01-19 00:57:07,159 INFO L130 PetriNetUnfolder]: For 59657/61991 co-relation queries the response was YES. [2022-01-19 00:57:07,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120382 conditions, 55387 events. 13285/55387 cut-off events. For 59657/61991 co-relation queries the response was YES. Maximal size of possible extension queue 4095. Compared 885253 event pairs, 5024 based on Foata normal form. 136/50652 useless extension candidates. Maximal degree in co-relation 120314. Up to 14044 conditions per place. [2022-01-19 00:57:08,099 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 109 selfloop transitions, 18 changer transitions 16/475 dead transitions. [2022-01-19 00:57:08,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 475 transitions, 2736 flow [2022-01-19 00:57:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 00:57:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 00:57:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3556 transitions. [2022-01-19 00:57:08,102 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8045248868778281 [2022-01-19 00:57:08,102 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3556 transitions. [2022-01-19 00:57:08,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3556 transitions. [2022-01-19 00:57:08,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:57:08,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3556 transitions. [2022-01-19 00:57:08,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.53846153846155) internal successors, (3556), 13 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:08,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:08,107 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:08,107 INFO L186 Difference]: Start difference. First operand has 426 places, 408 transitions, 2175 flow. Second operand 13 states and 3556 transitions. [2022-01-19 00:57:08,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 475 transitions, 2736 flow [2022-01-19 00:57:09,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 475 transitions, 2701 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:57:09,438 INFO L242 Difference]: Finished difference. Result has 446 places, 419 transitions, 2293 flow [2022-01-19 00:57:09,438 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2140, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2293, PETRI_PLACES=446, PETRI_TRANSITIONS=419} [2022-01-19 00:57:09,438 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 145 predicate places. [2022-01-19 00:57:09,438 INFO L470 AbstractCegarLoop]: Abstraction has has 446 places, 419 transitions, 2293 flow [2022-01-19 00:57:09,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:09,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:57:09,439 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:57:09,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 00:57:09,439 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:57:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:57:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash 850323031, now seen corresponding path program 3 times [2022-01-19 00:57:09,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:57:09,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148056875] [2022-01-19 00:57:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:57:09,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:57:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:57:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:57:09,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:57:09,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148056875] [2022-01-19 00:57:09,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148056875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:57:09,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:57:09,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:57:09,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201517185] [2022-01-19 00:57:09,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:57:09,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:57:09,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:57:09,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:57:09,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:57:09,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:57:09,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 419 transitions, 2293 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:09,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:57:09,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:57:09,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:57:16,149 INFO L129 PetriNetUnfolder]: 4203/43947 cut-off events. [2022-01-19 00:57:16,150 INFO L130 PetriNetUnfolder]: For 74629/75138 co-relation queries the response was YES. [2022-01-19 00:57:16,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92564 conditions, 43947 events. 4203/43947 cut-off events. For 74629/75138 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 733114 event pairs, 1027 based on Foata normal form. 40/41474 useless extension candidates. Maximal degree in co-relation 92486. Up to 2498 conditions per place. [2022-01-19 00:57:16,888 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 84 selfloop transitions, 38 changer transitions 0/456 dead transitions. [2022-01-19 00:57:16,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 456 transitions, 2873 flow [2022-01-19 00:57:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:57:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:57:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1563 transitions. [2022-01-19 00:57:16,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9194117647058824 [2022-01-19 00:57:16,889 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1563 transitions. [2022-01-19 00:57:16,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1563 transitions. [2022-01-19 00:57:16,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:57:16,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1563 transitions. [2022-01-19 00:57:16,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.6) internal successors, (1563), 5 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:16,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:16,892 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:16,892 INFO L186 Difference]: Start difference. First operand has 446 places, 419 transitions, 2293 flow. Second operand 5 states and 1563 transitions. [2022-01-19 00:57:16,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 456 transitions, 2873 flow [2022-01-19 00:57:18,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 456 transitions, 2849 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-01-19 00:57:18,480 INFO L242 Difference]: Finished difference. Result has 449 places, 424 transitions, 2466 flow [2022-01-19 00:57:18,480 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2466, PETRI_PLACES=449, PETRI_TRANSITIONS=424} [2022-01-19 00:57:18,480 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 148 predicate places. [2022-01-19 00:57:18,480 INFO L470 AbstractCegarLoop]: Abstraction has has 449 places, 424 transitions, 2466 flow [2022-01-19 00:57:18,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:18,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:57:18,481 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:57:18,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 00:57:18,481 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:57:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:57:18,481 INFO L85 PathProgramCache]: Analyzing trace with hash -980895135, now seen corresponding path program 3 times [2022-01-19 00:57:18,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:57:18,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919949975] [2022-01-19 00:57:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:57:18,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:57:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:57:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:57:18,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:57:18,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919949975] [2022-01-19 00:57:18,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919949975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:57:18,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:57:18,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:57:18,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657886049] [2022-01-19 00:57:18,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:57:18,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:57:18,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:57:18,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:57:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:57:18,517 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:57:18,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 424 transitions, 2466 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:18,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:57:18,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:57:18,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:57:24,953 INFO L129 PetriNetUnfolder]: 4204/43912 cut-off events. [2022-01-19 00:57:24,953 INFO L130 PetriNetUnfolder]: For 84579/85223 co-relation queries the response was YES. [2022-01-19 00:57:25,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91300 conditions, 43912 events. 4204/43912 cut-off events. For 84579/85223 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 732708 event pairs, 1273 based on Foata normal form. 40/41338 useless extension candidates. Maximal degree in co-relation 91220. Up to 4034 conditions per place. [2022-01-19 00:57:25,931 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 75 selfloop transitions, 41 changer transitions 0/450 dead transitions. [2022-01-19 00:57:25,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 450 transitions, 2944 flow [2022-01-19 00:57:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:57:25,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:57:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 00:57:25,933 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 00:57:25,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 00:57:25,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 00:57:25,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:57:25,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 00:57:25,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:25,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:25,936 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:25,936 INFO L186 Difference]: Start difference. First operand has 449 places, 424 transitions, 2466 flow. Second operand 5 states and 1558 transitions. [2022-01-19 00:57:25,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 450 transitions, 2944 flow [2022-01-19 00:57:26,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 450 transitions, 2924 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 00:57:26,943 INFO L242 Difference]: Finished difference. Result has 456 places, 434 transitions, 2763 flow [2022-01-19 00:57:26,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2763, PETRI_PLACES=456, PETRI_TRANSITIONS=434} [2022-01-19 00:57:26,943 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 155 predicate places. [2022-01-19 00:57:26,944 INFO L470 AbstractCegarLoop]: Abstraction has has 456 places, 434 transitions, 2763 flow [2022-01-19 00:57:26,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:26,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:57:26,944 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:57:26,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 00:57:26,944 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:57:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:57:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 493838365, now seen corresponding path program 1 times [2022-01-19 00:57:26,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:57:26,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621472561] [2022-01-19 00:57:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:57:26,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:57:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:57:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:57:26,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:57:26,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621472561] [2022-01-19 00:57:26,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621472561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:57:26,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:57:26,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:57:26,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856225667] [2022-01-19 00:57:26,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:57:26,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:57:26,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:57:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:57:26,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:57:26,975 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 00:57:26,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 434 transitions, 2763 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:26,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:57:26,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 00:57:26,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:57:33,720 INFO L129 PetriNetUnfolder]: 4220/44659 cut-off events. [2022-01-19 00:57:33,720 INFO L130 PetriNetUnfolder]: For 93155/93678 co-relation queries the response was YES. [2022-01-19 00:57:34,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92956 conditions, 44659 events. 4220/44659 cut-off events. For 93155/93678 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 741503 event pairs, 1283 based on Foata normal form. 75/41959 useless extension candidates. Maximal degree in co-relation 92873. Up to 4126 conditions per place. [2022-01-19 00:57:34,468 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 71 selfloop transitions, 42 changer transitions 0/447 dead transitions. [2022-01-19 00:57:34,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 447 transitions, 3083 flow [2022-01-19 00:57:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:57:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:57:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1553 transitions. [2022-01-19 00:57:34,469 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9135294117647059 [2022-01-19 00:57:34,469 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1553 transitions. [2022-01-19 00:57:34,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1553 transitions. [2022-01-19 00:57:34,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:57:34,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1553 transitions. [2022-01-19 00:57:34,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:34,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:34,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:34,471 INFO L186 Difference]: Start difference. First operand has 456 places, 434 transitions, 2763 flow. Second operand 5 states and 1553 transitions. [2022-01-19 00:57:34,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 447 transitions, 3083 flow [2022-01-19 00:57:35,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 447 transitions, 3074 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-01-19 00:57:35,545 INFO L242 Difference]: Finished difference. Result has 461 places, 435 transitions, 2922 flow [2022-01-19 00:57:35,545 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2922, PETRI_PLACES=461, PETRI_TRANSITIONS=435} [2022-01-19 00:57:35,546 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 160 predicate places. [2022-01-19 00:57:35,546 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 435 transitions, 2922 flow [2022-01-19 00:57:35,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:35,546 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:57:35,546 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:57:35,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 00:57:35,546 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:57:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:57:35,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1946973185, now seen corresponding path program 1 times [2022-01-19 00:57:35,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:57:35,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777198307] [2022-01-19 00:57:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:57:35,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:57:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:57:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:57:35,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:57:35,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777198307] [2022-01-19 00:57:35,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777198307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:57:35,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:57:35,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:57:35,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978369032] [2022-01-19 00:57:35,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:57:35,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:57:35,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:57:35,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:57:35,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:57:35,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:57:35,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 435 transitions, 2922 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:35,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:57:35,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:57:35,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:57:46,645 INFO L129 PetriNetUnfolder]: 13992/62094 cut-off events. [2022-01-19 00:57:46,646 INFO L130 PetriNetUnfolder]: For 116145/118738 co-relation queries the response was YES. [2022-01-19 00:57:47,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147614 conditions, 62094 events. 13992/62094 cut-off events. For 116145/118738 co-relation queries the response was YES. Maximal size of possible extension queue 4333. Compared 1019886 event pairs, 9560 based on Foata normal form. 58/55992 useless extension candidates. Maximal degree in co-relation 147529. Up to 27114 conditions per place. [2022-01-19 00:57:47,939 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 128 selfloop transitions, 12 changer transitions 17/505 dead transitions. [2022-01-19 00:57:47,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 505 transitions, 3561 flow [2022-01-19 00:57:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 00:57:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 00:57:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3558 transitions. [2022-01-19 00:57:47,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8049773755656109 [2022-01-19 00:57:47,941 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3558 transitions. [2022-01-19 00:57:47,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3558 transitions. [2022-01-19 00:57:47,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:57:47,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3558 transitions. [2022-01-19 00:57:47,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.6923076923077) internal successors, (3558), 13 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:47,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:47,946 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:47,946 INFO L186 Difference]: Start difference. First operand has 461 places, 435 transitions, 2922 flow. Second operand 13 states and 3558 transitions. [2022-01-19 00:57:47,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 505 transitions, 3561 flow [2022-01-19 00:57:49,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 505 transitions, 3529 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 00:57:49,893 INFO L242 Difference]: Finished difference. Result has 481 places, 444 transitions, 2983 flow [2022-01-19 00:57:49,893 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2890, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2983, PETRI_PLACES=481, PETRI_TRANSITIONS=444} [2022-01-19 00:57:49,893 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 180 predicate places. [2022-01-19 00:57:49,893 INFO L470 AbstractCegarLoop]: Abstraction has has 481 places, 444 transitions, 2983 flow [2022-01-19 00:57:49,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:49,894 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:57:49,894 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:57:49,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 00:57:49,894 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:57:49,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:57:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash -594822665, now seen corresponding path program 3 times [2022-01-19 00:57:49,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:57:49,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327720134] [2022-01-19 00:57:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:57:49,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:57:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:57:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:57:49,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:57:49,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327720134] [2022-01-19 00:57:49,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327720134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:57:49,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:57:49,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:57:49,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681615112] [2022-01-19 00:57:49,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:57:49,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:57:49,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:57:49,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:57:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:57:49,965 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:57:49,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 444 transitions, 2983 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:57:49,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:57:49,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:57:49,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:58:02,275 INFO L129 PetriNetUnfolder]: 15799/67182 cut-off events. [2022-01-19 00:58:02,275 INFO L130 PetriNetUnfolder]: For 139802/142351 co-relation queries the response was YES. [2022-01-19 00:58:03,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173082 conditions, 67182 events. 15799/67182 cut-off events. For 139802/142351 co-relation queries the response was YES. Maximal size of possible extension queue 5003. Compared 1110702 event pairs, 8319 based on Foata normal form. 150/60773 useless extension candidates. Maximal degree in co-relation 172987. Up to 25779 conditions per place. [2022-01-19 00:58:03,742 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 101 selfloop transitions, 23 changer transitions 14/486 dead transitions. [2022-01-19 00:58:03,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 486 transitions, 3521 flow [2022-01-19 00:58:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 00:58:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 00:58:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3274 transitions. [2022-01-19 00:58:03,745 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8024509803921569 [2022-01-19 00:58:03,745 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3274 transitions. [2022-01-19 00:58:03,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3274 transitions. [2022-01-19 00:58:03,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:58:03,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3274 transitions. [2022-01-19 00:58:03,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.8333333333333) internal successors, (3274), 12 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:03,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:03,749 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:03,749 INFO L186 Difference]: Start difference. First operand has 481 places, 444 transitions, 2983 flow. Second operand 12 states and 3274 transitions. [2022-01-19 00:58:03,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 486 transitions, 3521 flow [2022-01-19 00:58:07,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 486 transitions, 3459 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-01-19 00:58:07,127 INFO L242 Difference]: Finished difference. Result has 490 places, 457 transitions, 3144 flow [2022-01-19 00:58:07,127 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3144, PETRI_PLACES=490, PETRI_TRANSITIONS=457} [2022-01-19 00:58:07,127 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 189 predicate places. [2022-01-19 00:58:07,128 INFO L470 AbstractCegarLoop]: Abstraction has has 490 places, 457 transitions, 3144 flow [2022-01-19 00:58:07,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:07,128 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:58:07,128 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:58:07,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 00:58:07,128 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:58:07,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:58:07,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1327646175, now seen corresponding path program 4 times [2022-01-19 00:58:07,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:58:07,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454122485] [2022-01-19 00:58:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:58:07,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:58:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:58:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:58:07,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:58:07,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454122485] [2022-01-19 00:58:07,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454122485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:58:07,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:58:07,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:58:07,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800482391] [2022-01-19 00:58:07,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:58:07,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:58:07,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:58:07,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:58:07,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:58:07,199 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:58:07,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 457 transitions, 3144 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:07,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:58:07,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:58:07,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:58:20,331 INFO L129 PetriNetUnfolder]: 16222/70970 cut-off events. [2022-01-19 00:58:20,331 INFO L130 PetriNetUnfolder]: For 175366/178177 co-relation queries the response was YES. [2022-01-19 00:58:21,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191137 conditions, 70970 events. 16222/70970 cut-off events. For 175366/178177 co-relation queries the response was YES. Maximal size of possible extension queue 5304. Compared 1189590 event pairs, 7691 based on Foata normal form. 155/64572 useless extension candidates. Maximal degree in co-relation 191039. Up to 26467 conditions per place. [2022-01-19 00:58:21,867 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 104 selfloop transitions, 29 changer transitions 13/494 dead transitions. [2022-01-19 00:58:21,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 494 transitions, 3670 flow [2022-01-19 00:58:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 00:58:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 00:58:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3007 transitions. [2022-01-19 00:58:21,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8040106951871657 [2022-01-19 00:58:21,869 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3007 transitions. [2022-01-19 00:58:21,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3007 transitions. [2022-01-19 00:58:21,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:58:21,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3007 transitions. [2022-01-19 00:58:21,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.3636363636364) internal successors, (3007), 11 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:21,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:21,873 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:21,873 INFO L186 Difference]: Start difference. First operand has 490 places, 457 transitions, 3144 flow. Second operand 11 states and 3007 transitions. [2022-01-19 00:58:21,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 494 transitions, 3670 flow [2022-01-19 00:58:27,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 494 transitions, 3602 flow, removed 34 selfloop flow, removed 2 redundant places. [2022-01-19 00:58:27,870 INFO L242 Difference]: Finished difference. Result has 504 places, 467 transitions, 3309 flow [2022-01-19 00:58:27,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3090, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3309, PETRI_PLACES=504, PETRI_TRANSITIONS=467} [2022-01-19 00:58:27,871 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 203 predicate places. [2022-01-19 00:58:27,871 INFO L470 AbstractCegarLoop]: Abstraction has has 504 places, 467 transitions, 3309 flow [2022-01-19 00:58:27,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:27,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:58:27,871 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:58:27,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 00:58:27,872 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:58:27,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:58:27,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1832784447, now seen corresponding path program 5 times [2022-01-19 00:58:27,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:58:27,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408401536] [2022-01-19 00:58:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:58:27,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:58:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:58:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:58:27,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:58:27,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408401536] [2022-01-19 00:58:27,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408401536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:58:27,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:58:27,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:58:27,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540592095] [2022-01-19 00:58:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:58:27,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:58:27,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:58:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:58:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:58:27,931 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:58:27,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 467 transitions, 3309 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:27,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:58:27,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:58:27,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:58:43,347 INFO L129 PetriNetUnfolder]: 16447/72177 cut-off events. [2022-01-19 00:58:43,347 INFO L130 PetriNetUnfolder]: For 216342/219358 co-relation queries the response was YES. [2022-01-19 00:58:45,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206725 conditions, 72177 events. 16447/72177 cut-off events. For 216342/219358 co-relation queries the response was YES. Maximal size of possible extension queue 5487. Compared 1219607 event pairs, 8724 based on Foata normal form. 169/65113 useless extension candidates. Maximal degree in co-relation 206620. Up to 28965 conditions per place. [2022-01-19 00:58:45,355 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 106 selfloop transitions, 28 changer transitions 15/497 dead transitions. [2022-01-19 00:58:45,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 497 transitions, 3794 flow [2022-01-19 00:58:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 00:58:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 00:58:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3005 transitions. [2022-01-19 00:58:45,358 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.803475935828877 [2022-01-19 00:58:45,358 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3005 transitions. [2022-01-19 00:58:45,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3005 transitions. [2022-01-19 00:58:45,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:58:45,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3005 transitions. [2022-01-19 00:58:45,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.1818181818182) internal successors, (3005), 11 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:45,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:45,361 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:45,361 INFO L186 Difference]: Start difference. First operand has 504 places, 467 transitions, 3309 flow. Second operand 11 states and 3005 transitions. [2022-01-19 00:58:45,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 497 transitions, 3794 flow [2022-01-19 00:58:50,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 497 transitions, 3724 flow, removed 26 selfloop flow, removed 3 redundant places. [2022-01-19 00:58:50,786 INFO L242 Difference]: Finished difference. Result has 515 places, 472 transitions, 3394 flow [2022-01-19 00:58:50,786 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=515, PETRI_TRANSITIONS=472} [2022-01-19 00:58:50,786 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 214 predicate places. [2022-01-19 00:58:50,787 INFO L470 AbstractCegarLoop]: Abstraction has has 515 places, 472 transitions, 3394 flow [2022-01-19 00:58:50,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:50,787 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:58:50,787 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:58:50,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 00:58:50,787 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:58:50,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:58:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1405731671, now seen corresponding path program 6 times [2022-01-19 00:58:50,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:58:50,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486043181] [2022-01-19 00:58:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:58:50,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:58:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:58:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:58:50,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:58:50,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486043181] [2022-01-19 00:58:50,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486043181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:58:50,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:58:50,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:58:50,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588464125] [2022-01-19 00:58:50,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:58:50,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:58:50,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:58:50,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:58:50,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:58:50,862 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:58:50,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 472 transitions, 3394 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:58:50,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:58:50,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:58:50,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:59:06,900 INFO L129 PetriNetUnfolder]: 16463/72715 cut-off events. [2022-01-19 00:59:06,901 INFO L130 PetriNetUnfolder]: For 226443/229507 co-relation queries the response was YES. [2022-01-19 00:59:08,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207868 conditions, 72715 events. 16463/72715 cut-off events. For 226443/229507 co-relation queries the response was YES. Maximal size of possible extension queue 5490. Compared 1231241 event pairs, 7863 based on Foata normal form. 196/66161 useless extension candidates. Maximal degree in co-relation 207759. Up to 26636 conditions per place. [2022-01-19 00:59:08,679 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 106 selfloop transitions, 32 changer transitions 19/503 dead transitions. [2022-01-19 00:59:08,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 503 transitions, 3890 flow [2022-01-19 00:59:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 00:59:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 00:59:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3273 transitions. [2022-01-19 00:59:08,682 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8022058823529412 [2022-01-19 00:59:08,682 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3273 transitions. [2022-01-19 00:59:08,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3273 transitions. [2022-01-19 00:59:08,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:59:08,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3273 transitions. [2022-01-19 00:59:08,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.75) internal successors, (3273), 12 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:08,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:08,686 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:08,686 INFO L186 Difference]: Start difference. First operand has 515 places, 472 transitions, 3394 flow. Second operand 12 states and 3273 transitions. [2022-01-19 00:59:08,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 503 transitions, 3890 flow [2022-01-19 00:59:14,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 503 transitions, 3815 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-01-19 00:59:14,636 INFO L242 Difference]: Finished difference. Result has 526 places, 476 transitions, 3448 flow [2022-01-19 00:59:14,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3448, PETRI_PLACES=526, PETRI_TRANSITIONS=476} [2022-01-19 00:59:14,637 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 225 predicate places. [2022-01-19 00:59:14,637 INFO L470 AbstractCegarLoop]: Abstraction has has 526 places, 476 transitions, 3448 flow [2022-01-19 00:59:14,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:14,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:59:14,637 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:59:14,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 00:59:14,637 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:59:14,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:59:14,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1508317059, now seen corresponding path program 2 times [2022-01-19 00:59:14,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:59:14,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846723532] [2022-01-19 00:59:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:59:14,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:59:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:59:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:59:14,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:59:14,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846723532] [2022-01-19 00:59:14,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846723532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:59:14,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:59:14,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:59:14,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847928646] [2022-01-19 00:59:14,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:59:14,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:59:14,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:59:14,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:59:14,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:59:14,708 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:59:14,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 476 transitions, 3448 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:14,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:59:14,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:59:14,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:59:28,952 INFO L129 PetriNetUnfolder]: 15136/68502 cut-off events. [2022-01-19 00:59:28,952 INFO L130 PetriNetUnfolder]: For 220957/224166 co-relation queries the response was YES. [2022-01-19 00:59:30,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194271 conditions, 68502 events. 15136/68502 cut-off events. For 220957/224166 co-relation queries the response was YES. Maximal size of possible extension queue 5059. Compared 1154324 event pairs, 10510 based on Foata normal form. 75/61737 useless extension candidates. Maximal degree in co-relation 194158. Up to 33083 conditions per place. [2022-01-19 00:59:30,974 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 139 selfloop transitions, 19 changer transitions 14/518 dead transitions. [2022-01-19 00:59:30,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 518 transitions, 4044 flow [2022-01-19 00:59:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 00:59:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 00:59:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3274 transitions. [2022-01-19 00:59:30,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8024509803921569 [2022-01-19 00:59:30,976 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3274 transitions. [2022-01-19 00:59:30,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3274 transitions. [2022-01-19 00:59:30,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:59:30,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3274 transitions. [2022-01-19 00:59:30,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.8333333333333) internal successors, (3274), 12 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:30,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:30,980 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:30,980 INFO L186 Difference]: Start difference. First operand has 526 places, 476 transitions, 3448 flow. Second operand 12 states and 3274 transitions. [2022-01-19 00:59:30,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 518 transitions, 4044 flow [2022-01-19 00:59:36,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 518 transitions, 3976 flow, removed 22 selfloop flow, removed 4 redundant places. [2022-01-19 00:59:36,009 INFO L242 Difference]: Finished difference. Result has 538 places, 489 transitions, 3552 flow [2022-01-19 00:59:36,009 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3552, PETRI_PLACES=538, PETRI_TRANSITIONS=489} [2022-01-19 00:59:36,009 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 237 predicate places. [2022-01-19 00:59:36,009 INFO L470 AbstractCegarLoop]: Abstraction has has 538 places, 489 transitions, 3552 flow [2022-01-19 00:59:36,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:36,010 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:59:36,010 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:59:36,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 00:59:36,010 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:59:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:59:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1942609535, now seen corresponding path program 3 times [2022-01-19 00:59:36,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:59:36,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706065501] [2022-01-19 00:59:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:59:36,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:59:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:59:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:59:36,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:59:36,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706065501] [2022-01-19 00:59:36,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706065501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:59:36,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:59:36,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:59:36,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456257438] [2022-01-19 00:59:36,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:59:36,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:59:36,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:59:36,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:59:36,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:59:36,082 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:59:36,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 489 transitions, 3552 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:36,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:59:36,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:59:36,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:59:50,834 INFO L129 PetriNetUnfolder]: 15148/68517 cut-off events. [2022-01-19 00:59:50,834 INFO L130 PetriNetUnfolder]: For 212710/216069 co-relation queries the response was YES. [2022-01-19 00:59:52,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194675 conditions, 68517 events. 15148/68517 cut-off events. For 212710/216069 co-relation queries the response was YES. Maximal size of possible extension queue 5048. Compared 1154140 event pairs, 10366 based on Foata normal form. 95/61908 useless extension candidates. Maximal degree in co-relation 194557. Up to 33299 conditions per place. [2022-01-19 00:59:52,778 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 137 selfloop transitions, 21 changer transitions 15/519 dead transitions. [2022-01-19 00:59:52,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 519 transitions, 4090 flow [2022-01-19 00:59:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 00:59:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 00:59:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3005 transitions. [2022-01-19 00:59:52,780 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.803475935828877 [2022-01-19 00:59:52,780 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3005 transitions. [2022-01-19 00:59:52,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3005 transitions. [2022-01-19 00:59:52,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:59:52,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3005 transitions. [2022-01-19 00:59:52,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.1818181818182) internal successors, (3005), 11 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:52,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:52,784 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:52,784 INFO L186 Difference]: Start difference. First operand has 538 places, 489 transitions, 3552 flow. Second operand 11 states and 3005 transitions. [2022-01-19 00:59:52,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 519 transitions, 4090 flow [2022-01-19 00:59:56,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 519 transitions, 4036 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-01-19 00:59:56,980 INFO L242 Difference]: Finished difference. Result has 550 places, 494 transitions, 3619 flow [2022-01-19 00:59:56,980 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3619, PETRI_PLACES=550, PETRI_TRANSITIONS=494} [2022-01-19 00:59:56,980 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 249 predicate places. [2022-01-19 00:59:56,980 INFO L470 AbstractCegarLoop]: Abstraction has has 550 places, 494 transitions, 3619 flow [2022-01-19 00:59:56,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:56,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:59:56,981 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:59:56,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 00:59:56,981 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:59:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:59:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1480323245, now seen corresponding path program 4 times [2022-01-19 00:59:56,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:59:56,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456028420] [2022-01-19 00:59:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:59:56,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:59:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:59:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:59:57,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:59:57,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456028420] [2022-01-19 00:59:57,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456028420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:59:57,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:59:57,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:59:57,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073217239] [2022-01-19 00:59:57,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:59:57,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:59:57,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:59:57,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:59:57,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:59:57,040 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 00:59:57,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 494 transitions, 3619 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:59:57,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:59:57,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 00:59:57,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:00:11,998 INFO L129 PetriNetUnfolder]: 15155/67928 cut-off events. [2022-01-19 01:00:11,999 INFO L130 PetriNetUnfolder]: For 219582/222711 co-relation queries the response was YES. [2022-01-19 01:00:14,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196218 conditions, 67928 events. 15155/67928 cut-off events. For 219582/222711 co-relation queries the response was YES. Maximal size of possible extension queue 5102. Compared 1142639 event pairs, 10383 based on Foata normal form. 31/61203 useless extension candidates. Maximal degree in co-relation 196095. Up to 33552 conditions per place. [2022-01-19 01:00:14,183 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 149 selfloop transitions, 23 changer transitions 13/531 dead transitions. [2022-01-19 01:00:14,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 531 transitions, 4229 flow [2022-01-19 01:00:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 01:00:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 01:00:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3007 transitions. [2022-01-19 01:00:14,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8040106951871657 [2022-01-19 01:00:14,185 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3007 transitions. [2022-01-19 01:00:14,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3007 transitions. [2022-01-19 01:00:14,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:00:14,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3007 transitions. [2022-01-19 01:00:14,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.3636363636364) internal successors, (3007), 11 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:14,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:14,189 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:14,189 INFO L186 Difference]: Start difference. First operand has 550 places, 494 transitions, 3619 flow. Second operand 11 states and 3007 transitions. [2022-01-19 01:00:14,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 531 transitions, 4229 flow [2022-01-19 01:00:18,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 531 transitions, 4195 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-01-19 01:00:18,677 INFO L242 Difference]: Finished difference. Result has 563 places, 504 transitions, 3772 flow [2022-01-19 01:00:18,677 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3772, PETRI_PLACES=563, PETRI_TRANSITIONS=504} [2022-01-19 01:00:18,677 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 262 predicate places. [2022-01-19 01:00:18,677 INFO L470 AbstractCegarLoop]: Abstraction has has 563 places, 504 transitions, 3772 flow [2022-01-19 01:00:18,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:18,678 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:00:18,678 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:00:18,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 01:00:18,678 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:00:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:00:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1988714171, now seen corresponding path program 5 times [2022-01-19 01:00:18,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:00:18,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17437232] [2022-01-19 01:00:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:00:18,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:00:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:00:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:00:18,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:00:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17437232] [2022-01-19 01:00:18,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17437232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:00:18,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:00:18,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 01:00:18,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795386699] [2022-01-19 01:00:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:00:18,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 01:00:18,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:00:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 01:00:18,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 01:00:18,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 01:00:18,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 504 transitions, 3772 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:18,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:00:18,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 01:00:18,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:00:33,844 INFO L129 PetriNetUnfolder]: 15189/68963 cut-off events. [2022-01-19 01:00:33,844 INFO L130 PetriNetUnfolder]: For 240216/243385 co-relation queries the response was YES. [2022-01-19 01:00:36,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202261 conditions, 68963 events. 15189/68963 cut-off events. For 240216/243385 co-relation queries the response was YES. Maximal size of possible extension queue 5146. Compared 1163893 event pairs, 9767 based on Foata normal form. 35/62389 useless extension candidates. Maximal degree in co-relation 202132. Up to 31189 conditions per place. [2022-01-19 01:00:36,251 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 170 selfloop transitions, 34 changer transitions 16/566 dead transitions. [2022-01-19 01:00:36,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 566 transitions, 4641 flow [2022-01-19 01:00:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 01:00:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 01:00:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3556 transitions. [2022-01-19 01:00:36,253 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8045248868778281 [2022-01-19 01:00:36,253 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3556 transitions. [2022-01-19 01:00:36,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3556 transitions. [2022-01-19 01:00:36,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:00:36,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3556 transitions. [2022-01-19 01:00:36,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.53846153846155) internal successors, (3556), 13 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:36,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:36,258 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:36,258 INFO L186 Difference]: Start difference. First operand has 563 places, 504 transitions, 3772 flow. Second operand 13 states and 3556 transitions. [2022-01-19 01:00:36,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 566 transitions, 4641 flow [2022-01-19 01:00:41,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 566 transitions, 4537 flow, removed 41 selfloop flow, removed 4 redundant places. [2022-01-19 01:00:41,015 INFO L242 Difference]: Finished difference. Result has 578 places, 513 transitions, 3907 flow [2022-01-19 01:00:41,016 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3907, PETRI_PLACES=578, PETRI_TRANSITIONS=513} [2022-01-19 01:00:41,016 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 277 predicate places. [2022-01-19 01:00:41,016 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 513 transitions, 3907 flow [2022-01-19 01:00:41,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:41,017 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:00:41,017 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:00:41,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 01:00:41,017 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:00:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:00:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash 303934179, now seen corresponding path program 2 times [2022-01-19 01:00:41,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:00:41,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907973237] [2022-01-19 01:00:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:00:41,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:00:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:00:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:00:41,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:00:41,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907973237] [2022-01-19 01:00:41,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907973237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:00:41,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:00:41,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:00:41,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665619471] [2022-01-19 01:00:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:00:41,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:00:41,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:00:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:00:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:00:41,046 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:00:41,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 513 transitions, 3907 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:41,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:00:41,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:00:41,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:00:50,699 INFO L129 PetriNetUnfolder]: 4723/50263 cut-off events. [2022-01-19 01:00:50,699 INFO L130 PetriNetUnfolder]: For 190514/192381 co-relation queries the response was YES. [2022-01-19 01:00:52,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132187 conditions, 50263 events. 4723/50263 cut-off events. For 190514/192381 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 860715 event pairs, 910 based on Foata normal form. 88/48005 useless extension candidates. Maximal degree in co-relation 132052. Up to 4458 conditions per place. [2022-01-19 01:00:52,284 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 79 selfloop transitions, 38 changer transitions 2/533 dead transitions. [2022-01-19 01:00:52,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 533 transitions, 4300 flow [2022-01-19 01:00:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:00:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:00:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 01:00:52,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 01:00:52,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 01:00:52,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 01:00:52,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:00:52,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 01:00:52,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:52,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:52,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:52,288 INFO L186 Difference]: Start difference. First operand has 578 places, 513 transitions, 3907 flow. Second operand 5 states and 1558 transitions. [2022-01-19 01:00:52,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 533 transitions, 4300 flow [2022-01-19 01:00:54,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 533 transitions, 4175 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-01-19 01:00:54,952 INFO L242 Difference]: Finished difference. Result has 575 places, 515 transitions, 3914 flow [2022-01-19 01:00:54,952 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3914, PETRI_PLACES=575, PETRI_TRANSITIONS=515} [2022-01-19 01:00:54,952 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 274 predicate places. [2022-01-19 01:00:54,953 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 515 transitions, 3914 flow [2022-01-19 01:00:54,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:54,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:00:54,953 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:00:54,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 01:00:54,953 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:00:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:00:54,953 INFO L85 PathProgramCache]: Analyzing trace with hash 835775517, now seen corresponding path program 4 times [2022-01-19 01:00:54,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:00:54,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904723169] [2022-01-19 01:00:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:00:54,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:00:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:00:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:00:55,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:00:55,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904723169] [2022-01-19 01:00:55,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904723169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:00:55,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:00:55,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:00:55,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836225866] [2022-01-19 01:00:55,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:00:55,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:00:55,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:00:55,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:00:55,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:00:55,018 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:00:55,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 515 transitions, 3914 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:00:55,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:00:55,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:00:55,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:01:05,284 INFO L129 PetriNetUnfolder]: 5006/53708 cut-off events. [2022-01-19 01:01:05,284 INFO L130 PetriNetUnfolder]: For 195305/196991 co-relation queries the response was YES. [2022-01-19 01:01:06,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136941 conditions, 53708 events. 5006/53708 cut-off events. For 195305/196991 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 922517 event pairs, 888 based on Foata normal form. 152/51487 useless extension candidates. Maximal degree in co-relation 136807. Up to 3123 conditions per place. [2022-01-19 01:01:06,779 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 119 selfloop transitions, 24 changer transitions 0/557 dead transitions. [2022-01-19 01:01:06,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 557 transitions, 4767 flow [2022-01-19 01:01:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:01:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:01:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2022-01-19 01:01:06,780 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152941176470588 [2022-01-19 01:01:06,780 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2022-01-19 01:01:06,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2022-01-19 01:01:06,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:01:06,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2022-01-19 01:01:06,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:06,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:06,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:06,782 INFO L186 Difference]: Start difference. First operand has 575 places, 515 transitions, 3914 flow. Second operand 5 states and 1556 transitions. [2022-01-19 01:01:06,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 557 transitions, 4767 flow [2022-01-19 01:01:09,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 557 transitions, 4739 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-01-19 01:01:09,453 INFO L242 Difference]: Finished difference. Result has 580 places, 523 transitions, 4194 flow [2022-01-19 01:01:09,453 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4194, PETRI_PLACES=580, PETRI_TRANSITIONS=523} [2022-01-19 01:01:09,454 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 279 predicate places. [2022-01-19 01:01:09,454 INFO L470 AbstractCegarLoop]: Abstraction has has 580 places, 523 transitions, 4194 flow [2022-01-19 01:01:09,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:09,454 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:01:09,454 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:01:09,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 01:01:09,454 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:01:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:01:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1897944631, now seen corresponding path program 5 times [2022-01-19 01:01:09,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:01:09,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235315088] [2022-01-19 01:01:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:01:09,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:01:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:01:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:01:09,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:01:09,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235315088] [2022-01-19 01:01:09,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235315088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:01:09,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:01:09,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:01:09,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847717574] [2022-01-19 01:01:09,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:01:09,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:01:09,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:01:09,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:01:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:01:09,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:01:09,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 523 transitions, 4194 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:09,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:01:09,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:01:09,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:01:19,410 INFO L129 PetriNetUnfolder]: 4805/50484 cut-off events. [2022-01-19 01:01:19,410 INFO L130 PetriNetUnfolder]: For 193667/194999 co-relation queries the response was YES. [2022-01-19 01:01:20,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133262 conditions, 50484 events. 4805/50484 cut-off events. For 193667/194999 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 861741 event pairs, 840 based on Foata normal form. 33/48467 useless extension candidates. Maximal degree in co-relation 133126. Up to 3111 conditions per place. [2022-01-19 01:01:20,996 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 101 selfloop transitions, 30 changer transitions 0/545 dead transitions. [2022-01-19 01:01:20,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 545 transitions, 4608 flow [2022-01-19 01:01:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:01:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:01:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 01:01:20,997 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 01:01:20,997 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 01:01:20,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 01:01:20,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:01:20,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 01:01:20,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:20,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:20,999 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:20,999 INFO L186 Difference]: Start difference. First operand has 580 places, 523 transitions, 4194 flow. Second operand 5 states and 1558 transitions. [2022-01-19 01:01:20,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 545 transitions, 4608 flow [2022-01-19 01:01:24,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 545 transitions, 4605 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 01:01:24,027 INFO L242 Difference]: Finished difference. Result has 583 places, 522 transitions, 4232 flow [2022-01-19 01:01:24,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4232, PETRI_PLACES=583, PETRI_TRANSITIONS=522} [2022-01-19 01:01:24,028 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 282 predicate places. [2022-01-19 01:01:24,028 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 522 transitions, 4232 flow [2022-01-19 01:01:24,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:24,029 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:01:24,029 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:01:24,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 01:01:24,029 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:01:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:01:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash 664043035, now seen corresponding path program 6 times [2022-01-19 01:01:24,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:01:24,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865032484] [2022-01-19 01:01:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:01:24,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:01:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:01:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:01:24,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:01:24,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865032484] [2022-01-19 01:01:24,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865032484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:01:24,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:01:24,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 01:01:24,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729869222] [2022-01-19 01:01:24,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:01:24,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 01:01:24,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:01:24,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 01:01:24,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 01:01:24,178 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 01:01:24,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 522 transitions, 4232 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:24,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:01:24,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 01:01:24,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:01:39,326 INFO L129 PetriNetUnfolder]: 14405/65559 cut-off events. [2022-01-19 01:01:39,327 INFO L130 PetriNetUnfolder]: For 224384/227352 co-relation queries the response was YES. [2022-01-19 01:01:41,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188133 conditions, 65559 events. 14405/65559 cut-off events. For 224384/227352 co-relation queries the response was YES. Maximal size of possible extension queue 4786. Compared 1097036 event pairs, 9884 based on Foata normal form. 35/59181 useless extension candidates. Maximal degree in co-relation 187997. Up to 31639 conditions per place. [2022-01-19 01:01:41,615 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 149 selfloop transitions, 32 changer transitions 17/553 dead transitions. [2022-01-19 01:01:41,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 553 transitions, 4833 flow [2022-01-19 01:01:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 01:01:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 01:01:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3273 transitions. [2022-01-19 01:01:41,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8022058823529412 [2022-01-19 01:01:41,618 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3273 transitions. [2022-01-19 01:01:41,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3273 transitions. [2022-01-19 01:01:41,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:01:41,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3273 transitions. [2022-01-19 01:01:41,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.75) internal successors, (3273), 12 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:41,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:41,622 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:41,622 INFO L186 Difference]: Start difference. First operand has 583 places, 522 transitions, 4232 flow. Second operand 12 states and 3273 transitions. [2022-01-19 01:01:41,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 553 transitions, 4833 flow [2022-01-19 01:01:45,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 553 transitions, 4792 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:01:45,712 INFO L242 Difference]: Finished difference. Result has 598 places, 528 transitions, 4366 flow [2022-01-19 01:01:45,712 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4191, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4366, PETRI_PLACES=598, PETRI_TRANSITIONS=528} [2022-01-19 01:01:45,713 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 297 predicate places. [2022-01-19 01:01:45,713 INFO L470 AbstractCegarLoop]: Abstraction has has 598 places, 528 transitions, 4366 flow [2022-01-19 01:01:45,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:45,713 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:01:45,713 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:01:45,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 01:01:45,713 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:01:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:01:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1339106453, now seen corresponding path program 4 times [2022-01-19 01:01:45,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:01:45,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663365218] [2022-01-19 01:01:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:01:45,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:01:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:01:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:01:46,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:01:46,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663365218] [2022-01-19 01:01:46,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663365218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:01:46,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:01:46,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-19 01:01:46,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019653330] [2022-01-19 01:01:46,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:01:46,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 01:01:46,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:01:46,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 01:01:46,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-01-19 01:01:46,291 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 01:01:46,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 528 transitions, 4366 flow. Second operand has 29 states, 29 states have (on average 227.44827586206895) internal successors, (6596), 29 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:01:46,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:01:46,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 01:01:46,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:02:15,980 INFO L129 PetriNetUnfolder]: 27696/133496 cut-off events. [2022-01-19 01:02:15,980 INFO L130 PetriNetUnfolder]: For 372099/381897 co-relation queries the response was YES. [2022-01-19 01:02:20,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 303651 conditions, 133496 events. 27696/133496 cut-off events. For 372099/381897 co-relation queries the response was YES. Maximal size of possible extension queue 5258. Compared 2385663 event pairs, 15053 based on Foata normal form. 2620/121014 useless extension candidates. Maximal degree in co-relation 303509. Up to 9489 conditions per place. [2022-01-19 01:02:20,977 INFO L132 encePairwiseOnDemand]: 300/340 looper letters, 399 selfloop transitions, 45 changer transitions 72/863 dead transitions. [2022-01-19 01:02:20,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 863 transitions, 7511 flow [2022-01-19 01:02:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 01:02:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 01:02:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10223 transitions. [2022-01-19 01:02:20,982 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.683355614973262 [2022-01-19 01:02:20,982 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10223 transitions. [2022-01-19 01:02:20,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10223 transitions. [2022-01-19 01:02:20,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:02:20,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10223 transitions. [2022-01-19 01:02:20,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 232.3409090909091) internal successors, (10223), 44 states have internal predecessors, (10223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:20,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 340.0) internal successors, (15300), 45 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:20,996 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 340.0) internal successors, (15300), 45 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:20,996 INFO L186 Difference]: Start difference. First operand has 598 places, 528 transitions, 4366 flow. Second operand 44 states and 10223 transitions. [2022-01-19 01:02:20,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 863 transitions, 7511 flow [2022-01-19 01:02:26,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 863 transitions, 7337 flow, removed 74 selfloop flow, removed 4 redundant places. [2022-01-19 01:02:26,321 INFO L242 Difference]: Finished difference. Result has 644 places, 502 transitions, 4142 flow [2022-01-19 01:02:26,322 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4142, PETRI_PLACES=644, PETRI_TRANSITIONS=502} [2022-01-19 01:02:26,322 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 343 predicate places. [2022-01-19 01:02:26,322 INFO L470 AbstractCegarLoop]: Abstraction has has 644 places, 502 transitions, 4142 flow [2022-01-19 01:02:26,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 227.44827586206895) internal successors, (6596), 29 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:26,323 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:02:26,323 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:02:26,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 01:02:26,323 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:02:26,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:02:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash -389523893, now seen corresponding path program 6 times [2022-01-19 01:02:26,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:02:26,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719203661] [2022-01-19 01:02:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:02:26,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:02:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:02:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:02:26,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:02:26,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719203661] [2022-01-19 01:02:26,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719203661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:02:26,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:02:26,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:02:26,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063921627] [2022-01-19 01:02:26,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:02:26,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:02:26,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:02:26,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:02:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:02:26,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:02:26,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 502 transitions, 4142 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:26,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:02:26,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:02:26,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:02:34,422 INFO L129 PetriNetUnfolder]: 3917/39289 cut-off events. [2022-01-19 01:02:34,422 INFO L130 PetriNetUnfolder]: For 189914/192157 co-relation queries the response was YES. [2022-01-19 01:02:35,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110899 conditions, 39289 events. 3917/39289 cut-off events. For 189914/192157 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 635266 event pairs, 689 based on Foata normal form. 45/37277 useless extension candidates. Maximal degree in co-relation 110750. Up to 1967 conditions per place. [2022-01-19 01:02:35,642 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 107 selfloop transitions, 31 changer transitions 2/534 dead transitions. [2022-01-19 01:02:35,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 534 transitions, 4844 flow [2022-01-19 01:02:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:02:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:02:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2022-01-19 01:02:35,643 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152941176470588 [2022-01-19 01:02:35,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2022-01-19 01:02:35,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2022-01-19 01:02:35,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:02:35,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2022-01-19 01:02:35,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:35,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:35,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:35,646 INFO L186 Difference]: Start difference. First operand has 644 places, 502 transitions, 4142 flow. Second operand 5 states and 1556 transitions. [2022-01-19 01:02:35,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 534 transitions, 4844 flow [2022-01-19 01:02:37,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 534 transitions, 4708 flow, removed 17 selfloop flow, removed 53 redundant places. [2022-01-19 01:02:37,308 INFO L242 Difference]: Finished difference. Result has 575 places, 505 transitions, 4201 flow [2022-01-19 01:02:37,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4006, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4201, PETRI_PLACES=575, PETRI_TRANSITIONS=505} [2022-01-19 01:02:37,309 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 274 predicate places. [2022-01-19 01:02:37,309 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 505 transitions, 4201 flow [2022-01-19 01:02:37,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:37,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:02:37,309 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:02:37,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 01:02:37,310 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:02:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:02:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash -148283951, now seen corresponding path program 4 times [2022-01-19 01:02:37,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:02:37,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486326768] [2022-01-19 01:02:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:02:37,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:02:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:02:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:02:37,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:02:37,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486326768] [2022-01-19 01:02:37,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486326768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:02:37,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:02:37,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:02:37,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621324744] [2022-01-19 01:02:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:02:37,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:02:37,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:02:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:02:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:02:37,341 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:02:37,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 505 transitions, 4201 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:37,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:02:37,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:02:37,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:02:44,424 INFO L129 PetriNetUnfolder]: 3849/38733 cut-off events. [2022-01-19 01:02:44,424 INFO L130 PetriNetUnfolder]: For 160208/161577 co-relation queries the response was YES. [2022-01-19 01:02:45,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99295 conditions, 38733 events. 3849/38733 cut-off events. For 160208/161577 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 626071 event pairs, 571 based on Foata normal form. 194/36928 useless extension candidates. Maximal degree in co-relation 99160. Up to 2083 conditions per place. [2022-01-19 01:02:45,469 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 89 selfloop transitions, 40 changer transitions 2/525 dead transitions. [2022-01-19 01:02:45,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 525 transitions, 4514 flow [2022-01-19 01:02:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:02:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:02:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1560 transitions. [2022-01-19 01:02:45,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-01-19 01:02:45,470 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1560 transitions. [2022-01-19 01:02:45,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1560 transitions. [2022-01-19 01:02:45,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:02:45,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1560 transitions. [2022-01-19 01:02:45,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:45,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:45,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:45,472 INFO L186 Difference]: Start difference. First operand has 575 places, 505 transitions, 4201 flow. Second operand 5 states and 1560 transitions. [2022-01-19 01:02:45,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 525 transitions, 4514 flow [2022-01-19 01:02:46,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 525 transitions, 4405 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-01-19 01:02:46,617 INFO L242 Difference]: Finished difference. Result has 576 places, 502 transitions, 4079 flow [2022-01-19 01:02:46,617 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3986, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4079, PETRI_PLACES=576, PETRI_TRANSITIONS=502} [2022-01-19 01:02:46,617 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 275 predicate places. [2022-01-19 01:02:46,618 INFO L470 AbstractCegarLoop]: Abstraction has has 576 places, 502 transitions, 4079 flow [2022-01-19 01:02:46,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:46,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:02:46,618 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:02:46,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 01:02:46,618 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:02:46,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:02:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1054970379, now seen corresponding path program 7 times [2022-01-19 01:02:46,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:02:46,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266725235] [2022-01-19 01:02:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:02:46,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:02:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:02:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:02:46,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:02:46,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266725235] [2022-01-19 01:02:46,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266725235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:02:46,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:02:46,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:02:46,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591149162] [2022-01-19 01:02:46,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:02:46,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:02:46,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:02:46,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:02:46,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:02:46,673 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:02:46,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 502 transitions, 4079 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:46,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:02:46,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:02:46,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:02:54,078 INFO L129 PetriNetUnfolder]: 3840/39720 cut-off events. [2022-01-19 01:02:54,078 INFO L130 PetriNetUnfolder]: For 158488/160555 co-relation queries the response was YES. [2022-01-19 01:02:55,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99855 conditions, 39720 events. 3840/39720 cut-off events. For 158488/160555 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 645310 event pairs, 736 based on Foata normal form. 86/37656 useless extension candidates. Maximal degree in co-relation 99719. Up to 1893 conditions per place. [2022-01-19 01:02:55,463 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 105 selfloop transitions, 35 changer transitions 2/536 dead transitions. [2022-01-19 01:02:55,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 536 transitions, 4839 flow [2022-01-19 01:02:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:02:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:02:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 01:02:55,465 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 01:02:55,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 01:02:55,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 01:02:55,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:02:55,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 01:02:55,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:55,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:55,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:55,468 INFO L186 Difference]: Start difference. First operand has 576 places, 502 transitions, 4079 flow. Second operand 5 states and 1554 transitions. [2022-01-19 01:02:55,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 536 transitions, 4839 flow [2022-01-19 01:02:56,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 536 transitions, 4811 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-01-19 01:02:56,691 INFO L242 Difference]: Finished difference. Result has 583 places, 511 transitions, 4465 flow [2022-01-19 01:02:56,691 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4059, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4465, PETRI_PLACES=583, PETRI_TRANSITIONS=511} [2022-01-19 01:02:56,691 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 282 predicate places. [2022-01-19 01:02:56,691 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 511 transitions, 4465 flow [2022-01-19 01:02:56,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:56,692 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:02:56,692 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:02:56,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 01:02:56,692 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:02:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:02:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash 388364671, now seen corresponding path program 8 times [2022-01-19 01:02:56,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:02:56,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377918429] [2022-01-19 01:02:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:02:56,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:02:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:02:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:02:56,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:02:56,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377918429] [2022-01-19 01:02:56,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377918429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:02:56,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:02:56,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:02:56,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711846785] [2022-01-19 01:02:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:02:56,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:02:56,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:02:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:02:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:02:56,737 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:02:56,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 511 transitions, 4465 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:02:56,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:02:56,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:02:56,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:03:04,261 INFO L129 PetriNetUnfolder]: 3835/39254 cut-off events. [2022-01-19 01:03:04,261 INFO L130 PetriNetUnfolder]: For 161736/163606 co-relation queries the response was YES. [2022-01-19 01:03:05,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99078 conditions, 39254 events. 3835/39254 cut-off events. For 161736/163606 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 635424 event pairs, 703 based on Foata normal form. 72/37154 useless extension candidates. Maximal degree in co-relation 98938. Up to 2085 conditions per place. [2022-01-19 01:03:05,707 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 93 selfloop transitions, 41 changer transitions 6/534 dead transitions. [2022-01-19 01:03:05,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 534 transitions, 4907 flow [2022-01-19 01:03:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:03:05,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:03:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 01:03:05,708 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 01:03:05,708 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 01:03:05,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 01:03:05,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:03:05,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 01:03:05,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:05,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:05,710 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:05,710 INFO L186 Difference]: Start difference. First operand has 583 places, 511 transitions, 4465 flow. Second operand 5 states and 1558 transitions. [2022-01-19 01:03:05,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 534 transitions, 4907 flow [2022-01-19 01:03:07,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 534 transitions, 4874 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:03:07,040 INFO L242 Difference]: Finished difference. Result has 587 places, 511 transitions, 4558 flow [2022-01-19 01:03:07,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4416, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4558, PETRI_PLACES=587, PETRI_TRANSITIONS=511} [2022-01-19 01:03:07,040 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 286 predicate places. [2022-01-19 01:03:07,040 INFO L470 AbstractCegarLoop]: Abstraction has has 587 places, 511 transitions, 4558 flow [2022-01-19 01:03:07,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:07,041 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:03:07,041 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:03:07,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 01:03:07,041 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:03:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:03:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash 92457819, now seen corresponding path program 6 times [2022-01-19 01:03:07,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:03:07,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588477574] [2022-01-19 01:03:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:03:07,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:03:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:03:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:03:07,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:03:07,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588477574] [2022-01-19 01:03:07,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588477574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:03:07,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:03:07,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:03:07,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758368936] [2022-01-19 01:03:07,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:03:07,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:03:07,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:03:07,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:03:07,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:03:07,100 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:03:07,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 511 transitions, 4558 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:07,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:03:07,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:03:07,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:03:14,291 INFO L129 PetriNetUnfolder]: 3749/37348 cut-off events. [2022-01-19 01:03:14,291 INFO L130 PetriNetUnfolder]: For 169154/170692 co-relation queries the response was YES. [2022-01-19 01:03:15,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96174 conditions, 37348 events. 3749/37348 cut-off events. For 169154/170692 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 599380 event pairs, 610 based on Foata normal form. 29/35249 useless extension candidates. Maximal degree in co-relation 96032. Up to 1700 conditions per place. [2022-01-19 01:03:15,516 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 122 selfloop transitions, 27 changer transitions 1/544 dead transitions. [2022-01-19 01:03:15,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 544 transitions, 5293 flow [2022-01-19 01:03:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:03:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:03:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-01-19 01:03:15,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9170588235294118 [2022-01-19 01:03:15,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-01-19 01:03:15,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-01-19 01:03:15,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:03:15,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-01-19 01:03:15,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:15,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:15,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:15,519 INFO L186 Difference]: Start difference. First operand has 587 places, 511 transitions, 4558 flow. Second operand 5 states and 1559 transitions. [2022-01-19 01:03:15,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 544 transitions, 5293 flow [2022-01-19 01:03:17,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 544 transitions, 5232 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-01-19 01:03:17,063 INFO L242 Difference]: Finished difference. Result has 591 places, 514 transitions, 4702 flow [2022-01-19 01:03:17,064 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4502, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4702, PETRI_PLACES=591, PETRI_TRANSITIONS=514} [2022-01-19 01:03:17,064 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 290 predicate places. [2022-01-19 01:03:17,064 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 514 transitions, 4702 flow [2022-01-19 01:03:17,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:17,064 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:03:17,064 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:03:17,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 01:03:17,065 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:03:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:03:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1307940441, now seen corresponding path program 7 times [2022-01-19 01:03:17,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:03:17,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042856195] [2022-01-19 01:03:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:03:17,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:03:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:03:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:03:17,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:03:17,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042856195] [2022-01-19 01:03:17,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042856195] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:03:17,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:03:17,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:03:17,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843467479] [2022-01-19 01:03:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:03:17,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:03:17,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:03:17,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:03:17,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:03:17,105 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:03:17,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 514 transitions, 4702 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:17,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:03:17,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:03:17,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:03:24,581 INFO L129 PetriNetUnfolder]: 3784/38434 cut-off events. [2022-01-19 01:03:24,581 INFO L130 PetriNetUnfolder]: For 174504/176168 co-relation queries the response was YES. [2022-01-19 01:03:25,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98858 conditions, 38434 events. 3784/38434 cut-off events. For 174504/176168 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 620699 event pairs, 617 based on Foata normal form. 112/36475 useless extension candidates. Maximal degree in co-relation 98715. Up to 2052 conditions per place. [2022-01-19 01:03:25,864 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 126 selfloop transitions, 12 changer transitions 5/537 dead transitions. [2022-01-19 01:03:25,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 537 transitions, 5208 flow [2022-01-19 01:03:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:03:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:03:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1548 transitions. [2022-01-19 01:03:25,866 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9105882352941177 [2022-01-19 01:03:25,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1548 transitions. [2022-01-19 01:03:25,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1548 transitions. [2022-01-19 01:03:25,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:03:25,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1548 transitions. [2022-01-19 01:03:25,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.6) internal successors, (1548), 5 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:25,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:25,868 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:25,868 INFO L186 Difference]: Start difference. First operand has 591 places, 514 transitions, 4702 flow. Second operand 5 states and 1548 transitions. [2022-01-19 01:03:25,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 537 transitions, 5208 flow [2022-01-19 01:03:27,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 537 transitions, 5181 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 01:03:27,578 INFO L242 Difference]: Finished difference. Result has 593 places, 511 transitions, 4630 flow [2022-01-19 01:03:27,578 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4630, PETRI_PLACES=593, PETRI_TRANSITIONS=511} [2022-01-19 01:03:27,578 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 292 predicate places. [2022-01-19 01:03:27,578 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 511 transitions, 4630 flow [2022-01-19 01:03:27,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:27,578 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:03:27,579 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:03:27,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 01:03:27,579 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:03:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:03:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash -555172231, now seen corresponding path program 3 times [2022-01-19 01:03:27,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:03:27,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512820762] [2022-01-19 01:03:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:03:27,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:03:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:03:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:03:27,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:03:27,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512820762] [2022-01-19 01:03:27,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512820762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:03:27,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:03:27,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:03:27,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068148606] [2022-01-19 01:03:27,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:03:27,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:03:27,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:03:27,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:03:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:03:27,615 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:03:27,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 511 transitions, 4630 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:27,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:03:27,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:03:27,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:03:34,166 INFO L129 PetriNetUnfolder]: 3514/33747 cut-off events. [2022-01-19 01:03:34,166 INFO L130 PetriNetUnfolder]: For 160529/162332 co-relation queries the response was YES. [2022-01-19 01:03:35,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90006 conditions, 33747 events. 3514/33747 cut-off events. For 160529/162332 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 531886 event pairs, 910 based on Foata normal form. 89/31850 useless extension candidates. Maximal degree in co-relation 89864. Up to 3171 conditions per place. [2022-01-19 01:03:35,421 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 89 selfloop transitions, 38 changer transitions 3/524 dead transitions. [2022-01-19 01:03:35,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 524 transitions, 4915 flow [2022-01-19 01:03:35,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:03:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:03:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 01:03:35,422 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 01:03:35,422 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 01:03:35,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 01:03:35,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:03:35,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 01:03:35,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:35,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:35,424 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:35,424 INFO L186 Difference]: Start difference. First operand has 593 places, 511 transitions, 4630 flow. Second operand 5 states and 1554 transitions. [2022-01-19 01:03:35,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 524 transitions, 4915 flow [2022-01-19 01:03:36,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 524 transitions, 4874 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 01:03:36,788 INFO L242 Difference]: Finished difference. Result has 592 places, 507 transitions, 4576 flow [2022-01-19 01:03:36,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4500, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4576, PETRI_PLACES=592, PETRI_TRANSITIONS=507} [2022-01-19 01:03:36,789 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 291 predicate places. [2022-01-19 01:03:36,789 INFO L470 AbstractCegarLoop]: Abstraction has has 592 places, 507 transitions, 4576 flow [2022-01-19 01:03:36,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:36,789 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:03:36,789 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:03:36,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 01:03:36,789 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:03:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:03:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1065020315, now seen corresponding path program 4 times [2022-01-19 01:03:36,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:03:36,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550444940] [2022-01-19 01:03:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:03:36,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:03:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:03:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:03:36,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:03:36,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550444940] [2022-01-19 01:03:36,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550444940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:03:36,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:03:36,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:03:36,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751834698] [2022-01-19 01:03:36,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:03:36,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:03:36,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:03:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:03:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:03:36,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:03:36,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 507 transitions, 4576 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:36,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:03:36,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:03:36,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:03:43,601 INFO L129 PetriNetUnfolder]: 3490/33329 cut-off events. [2022-01-19 01:03:43,602 INFO L130 PetriNetUnfolder]: For 156388/158203 co-relation queries the response was YES. [2022-01-19 01:03:44,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89493 conditions, 33329 events. 3490/33329 cut-off events. For 156388/158203 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 524023 event pairs, 1006 based on Foata normal form. 23/31345 useless extension candidates. Maximal degree in co-relation 89352. Up to 3451 conditions per place. [2022-01-19 01:03:44,550 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 100 selfloop transitions, 16 changer transitions 3/513 dead transitions. [2022-01-19 01:03:44,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 513 transitions, 4787 flow [2022-01-19 01:03:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 01:03:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 01:03:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1238 transitions. [2022-01-19 01:03:44,552 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9102941176470588 [2022-01-19 01:03:44,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1238 transitions. [2022-01-19 01:03:44,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1238 transitions. [2022-01-19 01:03:44,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:03:44,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1238 transitions. [2022-01-19 01:03:44,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:44,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:44,553 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:44,553 INFO L186 Difference]: Start difference. First operand has 592 places, 507 transitions, 4576 flow. Second operand 4 states and 1238 transitions. [2022-01-19 01:03:44,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 513 transitions, 4787 flow [2022-01-19 01:03:45,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 513 transitions, 4727 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-01-19 01:03:45,776 INFO L242 Difference]: Finished difference. Result has 594 places, 502 transitions, 4422 flow [2022-01-19 01:03:45,777 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4422, PETRI_PLACES=594, PETRI_TRANSITIONS=502} [2022-01-19 01:03:45,777 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 293 predicate places. [2022-01-19 01:03:45,777 INFO L470 AbstractCegarLoop]: Abstraction has has 594 places, 502 transitions, 4422 flow [2022-01-19 01:03:45,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:45,777 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:03:45,777 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:03:45,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 01:03:45,777 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:03:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:03:45,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2038518433, now seen corresponding path program 9 times [2022-01-19 01:03:45,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:03:45,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841944374] [2022-01-19 01:03:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:03:45,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:03:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:03:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:03:45,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:03:45,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841944374] [2022-01-19 01:03:45,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841944374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:03:45,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:03:45,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:03:45,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578997310] [2022-01-19 01:03:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:03:45,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:03:45,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:03:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:03:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:03:45,818 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:03:45,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 502 transitions, 4422 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:45,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:03:45,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:03:45,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:03:51,561 INFO L129 PetriNetUnfolder]: 3242/29797 cut-off events. [2022-01-19 01:03:51,561 INFO L130 PetriNetUnfolder]: For 151888/153553 co-relation queries the response was YES. [2022-01-19 01:03:52,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83687 conditions, 29797 events. 3242/29797 cut-off events. For 151888/153553 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 460584 event pairs, 648 based on Foata normal form. 12/28195 useless extension candidates. Maximal degree in co-relation 83546. Up to 1828 conditions per place. [2022-01-19 01:03:52,068 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 83 selfloop transitions, 36 changer transitions 6/519 dead transitions. [2022-01-19 01:03:52,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 519 transitions, 4769 flow [2022-01-19 01:03:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:03:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:03:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1552 transitions. [2022-01-19 01:03:52,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129411764705883 [2022-01-19 01:03:52,070 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1552 transitions. [2022-01-19 01:03:52,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1552 transitions. [2022-01-19 01:03:52,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:03:52,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1552 transitions. [2022-01-19 01:03:52,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:52,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:52,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:52,072 INFO L186 Difference]: Start difference. First operand has 594 places, 502 transitions, 4422 flow. Second operand 5 states and 1552 transitions. [2022-01-19 01:03:52,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 519 transitions, 4769 flow [2022-01-19 01:03:53,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 519 transitions, 4712 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 01:03:53,360 INFO L242 Difference]: Finished difference. Result has 595 places, 502 transitions, 4435 flow [2022-01-19 01:03:53,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4435, PETRI_PLACES=595, PETRI_TRANSITIONS=502} [2022-01-19 01:03:53,360 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 294 predicate places. [2022-01-19 01:03:53,360 INFO L470 AbstractCegarLoop]: Abstraction has has 595 places, 502 transitions, 4435 flow [2022-01-19 01:03:53,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:53,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:03:53,360 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:03:53,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 01:03:53,361 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:03:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:03:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1899479315, now seen corresponding path program 5 times [2022-01-19 01:03:53,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:03:53,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116036093] [2022-01-19 01:03:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:03:53,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:03:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:03:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:03:53,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:03:53,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116036093] [2022-01-19 01:03:53,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116036093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:03:53,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:03:53,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:03:53,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429916142] [2022-01-19 01:03:53,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:03:53,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:03:53,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:03:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:03:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:03:53,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:03:53,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 502 transitions, 4435 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:53,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:03:53,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:03:53,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:03:58,550 INFO L129 PetriNetUnfolder]: 3008/27402 cut-off events. [2022-01-19 01:03:58,551 INFO L130 PetriNetUnfolder]: For 144254/145546 co-relation queries the response was YES. [2022-01-19 01:03:58,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76263 conditions, 27402 events. 3008/27402 cut-off events. For 144254/145546 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 419150 event pairs, 749 based on Foata normal form. 22/25635 useless extension candidates. Maximal degree in co-relation 76123. Up to 2381 conditions per place. [2022-01-19 01:03:59,030 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 97 selfloop transitions, 15 changer transitions 2/508 dead transitions. [2022-01-19 01:03:59,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 508 transitions, 4655 flow [2022-01-19 01:03:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 01:03:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 01:03:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1237 transitions. [2022-01-19 01:03:59,031 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9095588235294118 [2022-01-19 01:03:59,031 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1237 transitions. [2022-01-19 01:03:59,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1237 transitions. [2022-01-19 01:03:59,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:03:59,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1237 transitions. [2022-01-19 01:03:59,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.25) internal successors, (1237), 4 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:59,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:59,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:03:59,033 INFO L186 Difference]: Start difference. First operand has 595 places, 502 transitions, 4435 flow. Second operand 4 states and 1237 transitions. [2022-01-19 01:03:59,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 508 transitions, 4655 flow [2022-01-19 01:04:00,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 508 transitions, 4577 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 01:04:00,106 INFO L242 Difference]: Finished difference. Result has 595 places, 499 transitions, 4299 flow [2022-01-19 01:04:00,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4299, PETRI_PLACES=595, PETRI_TRANSITIONS=499} [2022-01-19 01:04:00,106 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 294 predicate places. [2022-01-19 01:04:00,106 INFO L470 AbstractCegarLoop]: Abstraction has has 595 places, 499 transitions, 4299 flow [2022-01-19 01:04:00,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:00,107 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:04:00,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:04:00,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 01:04:00,107 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:04:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:04:00,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1979565471, now seen corresponding path program 8 times [2022-01-19 01:04:00,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:04:00,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588531006] [2022-01-19 01:04:00,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:04:00,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:04:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:04:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:04:00,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:04:00,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588531006] [2022-01-19 01:04:00,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588531006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:04:00,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:04:00,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:04:00,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540303166] [2022-01-19 01:04:00,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:04:00,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:04:00,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:04:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:04:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:04:00,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:04:00,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 499 transitions, 4299 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:00,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:04:00,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:04:00,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:04:06,243 INFO L129 PetriNetUnfolder]: 3478/32113 cut-off events. [2022-01-19 01:04:06,243 INFO L130 PetriNetUnfolder]: For 148299/149789 co-relation queries the response was YES. [2022-01-19 01:04:06,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88772 conditions, 32113 events. 3478/32113 cut-off events. For 148299/149789 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 499736 event pairs, 539 based on Foata normal form. 13/30266 useless extension candidates. Maximal degree in co-relation 88633. Up to 1765 conditions per place. [2022-01-19 01:04:06,833 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 107 selfloop transitions, 26 changer transitions 3/530 dead transitions. [2022-01-19 01:04:06,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 530 transitions, 4975 flow [2022-01-19 01:04:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:04:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:04:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1552 transitions. [2022-01-19 01:04:06,834 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129411764705883 [2022-01-19 01:04:06,834 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1552 transitions. [2022-01-19 01:04:06,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1552 transitions. [2022-01-19 01:04:06,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:04:06,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1552 transitions. [2022-01-19 01:04:06,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:06,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:06,836 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:06,836 INFO L186 Difference]: Start difference. First operand has 595 places, 499 transitions, 4299 flow. Second operand 5 states and 1552 transitions. [2022-01-19 01:04:06,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 530 transitions, 4975 flow [2022-01-19 01:04:08,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 530 transitions, 4937 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:04:08,177 INFO L242 Difference]: Finished difference. Result has 600 places, 506 transitions, 4547 flow [2022-01-19 01:04:08,177 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4547, PETRI_PLACES=600, PETRI_TRANSITIONS=506} [2022-01-19 01:04:08,177 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 299 predicate places. [2022-01-19 01:04:08,177 INFO L470 AbstractCegarLoop]: Abstraction has has 600 places, 506 transitions, 4547 flow [2022-01-19 01:04:08,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:08,178 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:04:08,178 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:04:08,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 01:04:08,178 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:04:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:04:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1455420565, now seen corresponding path program 9 times [2022-01-19 01:04:08,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:04:08,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490722282] [2022-01-19 01:04:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:04:08,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:04:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:04:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:04:08,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:04:08,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490722282] [2022-01-19 01:04:08,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490722282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:04:08,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:04:08,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:04:08,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991970703] [2022-01-19 01:04:08,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:04:08,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:04:08,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:04:08,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:04:08,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:04:08,218 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:04:08,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 506 transitions, 4547 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:08,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:04:08,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:04:08,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:04:13,983 INFO L129 PetriNetUnfolder]: 3273/29064 cut-off events. [2022-01-19 01:04:13,984 INFO L130 PetriNetUnfolder]: For 153490/155078 co-relation queries the response was YES. [2022-01-19 01:04:14,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85399 conditions, 29064 events. 3273/29064 cut-off events. For 153490/155078 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 445780 event pairs, 680 based on Foata normal form. 26/27457 useless extension candidates. Maximal degree in co-relation 85257. Up to 1556 conditions per place. [2022-01-19 01:04:14,439 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 89 selfloop transitions, 39 changer transitions 6/528 dead transitions. [2022-01-19 01:04:14,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 528 transitions, 5002 flow [2022-01-19 01:04:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:04:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:04:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2022-01-19 01:04:14,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152941176470588 [2022-01-19 01:04:14,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2022-01-19 01:04:14,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2022-01-19 01:04:14,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:04:14,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2022-01-19 01:04:14,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:14,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:14,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:14,442 INFO L186 Difference]: Start difference. First operand has 600 places, 506 transitions, 4547 flow. Second operand 5 states and 1556 transitions. [2022-01-19 01:04:14,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 528 transitions, 5002 flow [2022-01-19 01:04:15,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 528 transitions, 4995 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:04:15,718 INFO L242 Difference]: Finished difference. Result has 603 places, 508 transitions, 4688 flow [2022-01-19 01:04:15,718 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4512, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4688, PETRI_PLACES=603, PETRI_TRANSITIONS=508} [2022-01-19 01:04:15,718 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 302 predicate places. [2022-01-19 01:04:15,718 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 508 transitions, 4688 flow [2022-01-19 01:04:15,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:15,719 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:04:15,719 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:04:15,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 01:04:15,719 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:04:15,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:04:15,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1105113117, now seen corresponding path program 10 times [2022-01-19 01:04:15,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:04:15,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668308650] [2022-01-19 01:04:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:04:15,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:04:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:04:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:04:15,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:04:15,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668308650] [2022-01-19 01:04:15,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668308650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:04:15,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:04:15,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:04:15,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144597130] [2022-01-19 01:04:15,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:04:15,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:04:15,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:04:15,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:04:15,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:04:15,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:04:15,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 508 transitions, 4688 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:15,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:04:15,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:04:15,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:04:21,642 INFO L129 PetriNetUnfolder]: 3352/30036 cut-off events. [2022-01-19 01:04:21,642 INFO L130 PetriNetUnfolder]: For 170487/172179 co-relation queries the response was YES. [2022-01-19 01:04:22,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85275 conditions, 30036 events. 3352/30036 cut-off events. For 170487/172179 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 461862 event pairs, 715 based on Foata normal form. 35/28321 useless extension candidates. Maximal degree in co-relation 85132. Up to 1672 conditions per place. [2022-01-19 01:04:22,140 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 98 selfloop transitions, 29 changer transitions 8/529 dead transitions. [2022-01-19 01:04:22,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 529 transitions, 5163 flow [2022-01-19 01:04:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:04:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:04:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1552 transitions. [2022-01-19 01:04:22,141 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129411764705883 [2022-01-19 01:04:22,141 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1552 transitions. [2022-01-19 01:04:22,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1552 transitions. [2022-01-19 01:04:22,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:04:22,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1552 transitions. [2022-01-19 01:04:22,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:22,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:22,143 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:22,143 INFO L186 Difference]: Start difference. First operand has 603 places, 508 transitions, 4688 flow. Second operand 5 states and 1552 transitions. [2022-01-19 01:04:22,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 529 transitions, 5163 flow [2022-01-19 01:04:23,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 529 transitions, 5155 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-01-19 01:04:23,535 INFO L242 Difference]: Finished difference. Result has 608 places, 505 transitions, 4679 flow [2022-01-19 01:04:23,535 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4656, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4679, PETRI_PLACES=608, PETRI_TRANSITIONS=505} [2022-01-19 01:04:23,536 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 307 predicate places. [2022-01-19 01:04:23,536 INFO L470 AbstractCegarLoop]: Abstraction has has 608 places, 505 transitions, 4679 flow [2022-01-19 01:04:23,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:23,536 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:04:23,536 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:04:23,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 01:04:23,536 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:04:23,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:04:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1577870249, now seen corresponding path program 10 times [2022-01-19 01:04:23,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:04:23,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046534374] [2022-01-19 01:04:23,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:04:23,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:04:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:04:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:04:23,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:04:23,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046534374] [2022-01-19 01:04:23,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046534374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:04:23,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:04:23,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:04:23,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577236543] [2022-01-19 01:04:23,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:04:23,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:04:23,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:04:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:04:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:04:23,574 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:04:23,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 505 transitions, 4679 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:23,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:04:23,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:04:23,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:04:29,464 INFO L129 PetriNetUnfolder]: 3343/29876 cut-off events. [2022-01-19 01:04:29,464 INFO L130 PetriNetUnfolder]: For 166877/168461 co-relation queries the response was YES. [2022-01-19 01:04:30,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85605 conditions, 29876 events. 3343/29876 cut-off events. For 166877/168461 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 458164 event pairs, 487 based on Foata normal form. 21/28194 useless extension candidates. Maximal degree in co-relation 85460. Up to 1562 conditions per place. [2022-01-19 01:04:30,159 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 95 selfloop transitions, 29 changer transitions 2/520 dead transitions. [2022-01-19 01:04:30,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 520 transitions, 5056 flow [2022-01-19 01:04:30,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:04:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:04:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1547 transitions. [2022-01-19 01:04:30,161 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.91 [2022-01-19 01:04:30,161 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1547 transitions. [2022-01-19 01:04:30,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1547 transitions. [2022-01-19 01:04:30,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:04:30,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1547 transitions. [2022-01-19 01:04:30,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.4) internal successors, (1547), 5 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:30,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:30,162 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:30,163 INFO L186 Difference]: Start difference. First operand has 608 places, 505 transitions, 4679 flow. Second operand 5 states and 1547 transitions. [2022-01-19 01:04:30,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 520 transitions, 5056 flow [2022-01-19 01:04:31,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 520 transitions, 5014 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 01:04:31,446 INFO L242 Difference]: Finished difference. Result has 609 places, 504 transitions, 4677 flow [2022-01-19 01:04:31,447 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4677, PETRI_PLACES=609, PETRI_TRANSITIONS=504} [2022-01-19 01:04:31,562 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 308 predicate places. [2022-01-19 01:04:31,562 INFO L470 AbstractCegarLoop]: Abstraction has has 609 places, 504 transitions, 4677 flow [2022-01-19 01:04:31,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:31,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:04:31,563 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:04:31,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 01:04:31,563 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:04:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:04:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1720319565, now seen corresponding path program 11 times [2022-01-19 01:04:31,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:04:31,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614182602] [2022-01-19 01:04:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:04:31,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:04:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:04:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:04:31,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:04:31,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614182602] [2022-01-19 01:04:31,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614182602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:04:31,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:04:31,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:04:31,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309660456] [2022-01-19 01:04:31,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:04:31,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:04:31,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:04:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:04:31,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:04:31,592 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:04:31,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 504 transitions, 4677 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:31,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:04:31,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:04:31,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:04:37,277 INFO L129 PetriNetUnfolder]: 3329/29216 cut-off events. [2022-01-19 01:04:37,278 INFO L130 PetriNetUnfolder]: For 165534/167106 co-relation queries the response was YES. [2022-01-19 01:04:38,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84968 conditions, 29216 events. 3329/29216 cut-off events. For 165534/167106 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 445568 event pairs, 438 based on Foata normal form. 21/27568 useless extension candidates. Maximal degree in co-relation 84823. Up to 1847 conditions per place. [2022-01-19 01:04:38,110 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 110 selfloop transitions, 13 changer transitions 7/524 dead transitions. [2022-01-19 01:04:38,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 524 transitions, 5088 flow [2022-01-19 01:04:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:04:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:04:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1549 transitions. [2022-01-19 01:04:38,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111764705882353 [2022-01-19 01:04:38,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1549 transitions. [2022-01-19 01:04:38,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1549 transitions. [2022-01-19 01:04:38,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:04:38,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1549 transitions. [2022-01-19 01:04:38,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:38,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:38,113 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:38,113 INFO L186 Difference]: Start difference. First operand has 609 places, 504 transitions, 4677 flow. Second operand 5 states and 1549 transitions. [2022-01-19 01:04:38,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 524 transitions, 5088 flow [2022-01-19 01:04:39,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 524 transitions, 5055 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:04:39,589 INFO L242 Difference]: Finished difference. Result has 611 places, 502 transitions, 4612 flow [2022-01-19 01:04:39,589 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4618, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4612, PETRI_PLACES=611, PETRI_TRANSITIONS=502} [2022-01-19 01:04:39,589 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 310 predicate places. [2022-01-19 01:04:39,589 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 502 transitions, 4612 flow [2022-01-19 01:04:39,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:39,590 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:04:39,590 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:04:39,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 01:04:39,590 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:04:39,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:04:39,590 INFO L85 PathProgramCache]: Analyzing trace with hash 814846189, now seen corresponding path program 12 times [2022-01-19 01:04:39,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:04:39,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693539129] [2022-01-19 01:04:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:04:39,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:04:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:04:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:04:39,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:04:39,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693539129] [2022-01-19 01:04:39,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693539129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:04:39,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:04:39,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:04:39,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826851503] [2022-01-19 01:04:39,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:04:39,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:04:39,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:04:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:04:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:04:39,620 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:04:39,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 502 transitions, 4612 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:39,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:04:39,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:04:39,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:04:45,332 INFO L129 PetriNetUnfolder]: 3241/27729 cut-off events. [2022-01-19 01:04:45,333 INFO L130 PetriNetUnfolder]: For 161831/163777 co-relation queries the response was YES. [2022-01-19 01:04:45,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82361 conditions, 27729 events. 3241/27729 cut-off events. For 161831/163777 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 418575 event pairs, 460 based on Foata normal form. 32/26170 useless extension candidates. Maximal degree in co-relation 82216. Up to 1847 conditions per place. [2022-01-19 01:04:45,906 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 105 selfloop transitions, 11 changer transitions 12/522 dead transitions. [2022-01-19 01:04:45,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 522 transitions, 5018 flow [2022-01-19 01:04:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:04:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:04:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1549 transitions. [2022-01-19 01:04:45,908 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111764705882353 [2022-01-19 01:04:45,908 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1549 transitions. [2022-01-19 01:04:45,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1549 transitions. [2022-01-19 01:04:45,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:04:45,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1549 transitions. [2022-01-19 01:04:45,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:45,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:45,910 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:45,910 INFO L186 Difference]: Start difference. First operand has 611 places, 502 transitions, 4612 flow. Second operand 5 states and 1549 transitions. [2022-01-19 01:04:45,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 522 transitions, 5018 flow [2022-01-19 01:04:47,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 522 transitions, 4978 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 01:04:47,100 INFO L242 Difference]: Finished difference. Result has 611 places, 498 transitions, 4489 flow [2022-01-19 01:04:47,101 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4535, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4489, PETRI_PLACES=611, PETRI_TRANSITIONS=498} [2022-01-19 01:04:47,101 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 310 predicate places. [2022-01-19 01:04:47,101 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 498 transitions, 4489 flow [2022-01-19 01:04:47,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:47,101 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:04:47,101 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:04:47,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 01:04:47,101 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:04:47,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:04:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash 177107899, now seen corresponding path program 11 times [2022-01-19 01:04:47,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:04:47,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863741665] [2022-01-19 01:04:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:04:47,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:04:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:04:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:04:47,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:04:47,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863741665] [2022-01-19 01:04:47,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863741665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:04:47,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:04:47,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:04:47,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915925266] [2022-01-19 01:04:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:04:47,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:04:47,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:04:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:04:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:04:47,150 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:04:47,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 498 transitions, 4489 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:47,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:04:47,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:04:47,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:04:51,985 INFO L129 PetriNetUnfolder]: 2881/23373 cut-off events. [2022-01-19 01:04:51,985 INFO L130 PetriNetUnfolder]: For 149834/151082 co-relation queries the response was YES. [2022-01-19 01:04:52,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73267 conditions, 23373 events. 2881/23373 cut-off events. For 149834/151082 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 343296 event pairs, 641 based on Foata normal form. 33/22000 useless extension candidates. Maximal degree in co-relation 73123. Up to 1314 conditions per place. [2022-01-19 01:04:52,735 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 77 selfloop transitions, 38 changer transitions 5/514 dead transitions. [2022-01-19 01:04:52,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 514 transitions, 4805 flow [2022-01-19 01:04:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:04:52,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:04:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1557 transitions. [2022-01-19 01:04:52,737 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9158823529411765 [2022-01-19 01:04:52,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1557 transitions. [2022-01-19 01:04:52,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1557 transitions. [2022-01-19 01:04:52,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:04:52,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1557 transitions. [2022-01-19 01:04:52,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:52,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:52,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:52,739 INFO L186 Difference]: Start difference. First operand has 611 places, 498 transitions, 4489 flow. Second operand 5 states and 1557 transitions. [2022-01-19 01:04:52,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 514 transitions, 4805 flow [2022-01-19 01:04:53,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 514 transitions, 4745 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-01-19 01:04:53,913 INFO L242 Difference]: Finished difference. Result has 610 places, 497 transitions, 4485 flow [2022-01-19 01:04:53,913 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4409, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4485, PETRI_PLACES=610, PETRI_TRANSITIONS=497} [2022-01-19 01:04:53,913 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 309 predicate places. [2022-01-19 01:04:53,913 INFO L470 AbstractCegarLoop]: Abstraction has has 610 places, 497 transitions, 4485 flow [2022-01-19 01:04:53,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:53,913 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:04:53,914 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:04:53,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 01:04:53,914 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:04:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:04:53,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1213810355, now seen corresponding path program 12 times [2022-01-19 01:04:53,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:04:53,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476314700] [2022-01-19 01:04:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:04:53,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:04:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:04:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:04:53,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:04:53,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476314700] [2022-01-19 01:04:53,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476314700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:04:53,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:04:53,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:04:53,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283579203] [2022-01-19 01:04:53,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:04:53,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:04:53,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:04:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:04:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:04:53,952 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 01:04:53,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 497 transitions, 4485 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:53,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:04:53,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 01:04:53,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:04:58,969 INFO L129 PetriNetUnfolder]: 3078/25517 cut-off events. [2022-01-19 01:04:58,969 INFO L130 PetriNetUnfolder]: For 146429/147659 co-relation queries the response was YES. [2022-01-19 01:04:59,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76444 conditions, 25517 events. 3078/25517 cut-off events. For 146429/147659 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 379569 event pairs, 595 based on Foata normal form. 26/23913 useless extension candidates. Maximal degree in co-relation 76302. Up to 1428 conditions per place. [2022-01-19 01:04:59,663 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 71 selfloop transitions, 41 changer transitions 5/511 dead transitions. [2022-01-19 01:04:59,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 511 transitions, 4785 flow [2022-01-19 01:04:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:04:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:04:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1557 transitions. [2022-01-19 01:04:59,664 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9158823529411765 [2022-01-19 01:04:59,664 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1557 transitions. [2022-01-19 01:04:59,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1557 transitions. [2022-01-19 01:04:59,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:04:59,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1557 transitions. [2022-01-19 01:04:59,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:59,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:59,666 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:04:59,666 INFO L186 Difference]: Start difference. First operand has 610 places, 497 transitions, 4485 flow. Second operand 5 states and 1557 transitions. [2022-01-19 01:04:59,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 511 transitions, 4785 flow [2022-01-19 01:05:00,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 511 transitions, 4694 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 01:05:00,915 INFO L242 Difference]: Finished difference. Result has 610 places, 496 transitions, 4452 flow [2022-01-19 01:05:00,915 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4370, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4452, PETRI_PLACES=610, PETRI_TRANSITIONS=496} [2022-01-19 01:05:00,915 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 309 predicate places. [2022-01-19 01:05:00,916 INFO L470 AbstractCegarLoop]: Abstraction has has 610 places, 496 transitions, 4452 flow [2022-01-19 01:05:00,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:00,916 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:05:00,916 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:05:00,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 01:05:00,916 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:05:00,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:05:00,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1660460544, now seen corresponding path program 1 times [2022-01-19 01:05:00,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:05:00,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788337467] [2022-01-19 01:05:00,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:05:00,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:05:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:05:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:05:01,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:05:01,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788337467] [2022-01-19 01:05:01,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788337467] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:05:01,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407964741] [2022-01-19 01:05:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:05:01,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:05:01,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:05:01,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:05:01,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 01:05:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:05:01,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 01:05:01,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:05:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:05:02,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:05:03,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:05:03,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407964741] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 01:05:03,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 01:05:03,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-01-19 01:05:03,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894161189] [2022-01-19 01:05:03,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:05:03,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 01:05:03,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:05:03,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 01:05:03,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 01:05:03,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 01:05:03,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 496 transitions, 4452 flow. Second operand has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:03,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:05:03,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 01:05:03,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:05:15,703 INFO L129 PetriNetUnfolder]: 11636/59666 cut-off events. [2022-01-19 01:05:15,704 INFO L130 PetriNetUnfolder]: For 117805/123458 co-relation queries the response was YES. [2022-01-19 01:05:17,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120920 conditions, 59666 events. 11636/59666 cut-off events. For 117805/123458 co-relation queries the response was YES. Maximal size of possible extension queue 2474. Compared 974412 event pairs, 5754 based on Foata normal form. 685/52948 useless extension candidates. Maximal degree in co-relation 120780. Up to 6986 conditions per place. [2022-01-19 01:05:17,652 INFO L132 encePairwiseOnDemand]: 312/340 looper letters, 313 selfloop transitions, 44 changer transitions 29/722 dead transitions. [2022-01-19 01:05:17,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 722 transitions, 6447 flow [2022-01-19 01:05:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 01:05:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 01:05:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7104 transitions. [2022-01-19 01:05:17,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6964705882352941 [2022-01-19 01:05:17,655 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7104 transitions. [2022-01-19 01:05:17,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7104 transitions. [2022-01-19 01:05:17,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:05:17,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7104 transitions. [2022-01-19 01:05:17,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 236.8) internal successors, (7104), 30 states have internal predecessors, (7104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:17,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:17,664 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:17,665 INFO L186 Difference]: Start difference. First operand has 610 places, 496 transitions, 4452 flow. Second operand 30 states and 7104 transitions. [2022-01-19 01:05:17,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 722 transitions, 6447 flow [2022-01-19 01:05:18,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 722 transitions, 6385 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 01:05:18,226 INFO L242 Difference]: Finished difference. Result has 642 places, 501 transitions, 4459 flow [2022-01-19 01:05:18,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4459, PETRI_PLACES=642, PETRI_TRANSITIONS=501} [2022-01-19 01:05:18,227 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 341 predicate places. [2022-01-19 01:05:18,227 INFO L470 AbstractCegarLoop]: Abstraction has has 642 places, 501 transitions, 4459 flow [2022-01-19 01:05:18,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:18,227 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:05:18,227 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:05:18,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 01:05:18,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-19 01:05:18,428 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:05:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:05:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1778909278, now seen corresponding path program 2 times [2022-01-19 01:05:18,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:05:18,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489048728] [2022-01-19 01:05:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:05:18,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:05:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:05:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:05:18,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:05:18,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489048728] [2022-01-19 01:05:18,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489048728] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:05:18,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021451232] [2022-01-19 01:05:18,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 01:05:18,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:05:18,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:05:18,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:05:18,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 01:05:18,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 01:05:18,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:05:18,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 01:05:18,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:05:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:05:19,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 01:05:19,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021451232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:05:19,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 01:05:19,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [19] total 32 [2022-01-19 01:05:19,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173669490] [2022-01-19 01:05:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:05:19,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 01:05:19,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:05:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 01:05:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2022-01-19 01:05:19,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 01:05:19,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 501 transitions, 4459 flow. Second operand has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:19,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:05:19,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 01:05:19,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:05:33,097 INFO L129 PetriNetUnfolder]: 12474/60626 cut-off events. [2022-01-19 01:05:33,097 INFO L130 PetriNetUnfolder]: For 124828/131007 co-relation queries the response was YES. [2022-01-19 01:05:35,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127644 conditions, 60626 events. 12474/60626 cut-off events. For 124828/131007 co-relation queries the response was YES. Maximal size of possible extension queue 2641. Compared 984196 event pairs, 6342 based on Foata normal form. 585/53622 useless extension candidates. Maximal degree in co-relation 127500. Up to 7512 conditions per place. [2022-01-19 01:05:35,429 INFO L132 encePairwiseOnDemand]: 306/340 looper letters, 284 selfloop transitions, 46 changer transitions 14/678 dead transitions. [2022-01-19 01:05:35,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 678 transitions, 6080 flow [2022-01-19 01:05:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 01:05:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 01:05:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8132 transitions. [2022-01-19 01:05:35,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6833613445378152 [2022-01-19 01:05:35,433 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8132 transitions. [2022-01-19 01:05:35,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8132 transitions. [2022-01-19 01:05:35,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:05:35,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8132 transitions. [2022-01-19 01:05:35,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 232.34285714285716) internal successors, (8132), 35 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:35,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:35,443 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:35,443 INFO L186 Difference]: Start difference. First operand has 642 places, 501 transitions, 4459 flow. Second operand 35 states and 8132 transitions. [2022-01-19 01:05:35,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 678 transitions, 6080 flow [2022-01-19 01:05:36,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 678 transitions, 5974 flow, removed 38 selfloop flow, removed 18 redundant places. [2022-01-19 01:05:36,049 INFO L242 Difference]: Finished difference. Result has 658 places, 521 transitions, 4608 flow [2022-01-19 01:05:36,049 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4399, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4608, PETRI_PLACES=658, PETRI_TRANSITIONS=521} [2022-01-19 01:05:36,049 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 357 predicate places. [2022-01-19 01:05:36,049 INFO L470 AbstractCegarLoop]: Abstraction has has 658 places, 521 transitions, 4608 flow [2022-01-19 01:05:36,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:36,050 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:05:36,050 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:05:36,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 01:05:36,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-19 01:05:36,252 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:05:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:05:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1880461646, now seen corresponding path program 3 times [2022-01-19 01:05:36,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:05:36,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878171425] [2022-01-19 01:05:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:05:36,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:05:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:05:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:05:36,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:05:36,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878171425] [2022-01-19 01:05:36,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878171425] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:05:36,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118512935] [2022-01-19 01:05:36,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 01:05:36,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:05:36,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:05:36,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:05:36,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 01:05:36,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 01:05:36,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:05:36,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 01:05:36,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:05:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:05:37,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 01:05:37,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118512935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:05:37,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 01:05:37,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [19] total 32 [2022-01-19 01:05:37,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26428660] [2022-01-19 01:05:37,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:05:37,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 01:05:37,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:05:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 01:05:37,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2022-01-19 01:05:37,435 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 01:05:37,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 521 transitions, 4608 flow. Second operand has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:37,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:05:37,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 01:05:37,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:05:50,643 INFO L129 PetriNetUnfolder]: 12536/61177 cut-off events. [2022-01-19 01:05:50,643 INFO L130 PetriNetUnfolder]: For 134667/141278 co-relation queries the response was YES. [2022-01-19 01:05:52,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131110 conditions, 61177 events. 12536/61177 cut-off events. For 134667/141278 co-relation queries the response was YES. Maximal size of possible extension queue 2613. Compared 994972 event pairs, 5605 based on Foata normal form. 622/54216 useless extension candidates. Maximal degree in co-relation 130963. Up to 7512 conditions per place. [2022-01-19 01:05:52,865 INFO L132 encePairwiseOnDemand]: 306/340 looper letters, 292 selfloop transitions, 53 changer transitions 36/715 dead transitions. [2022-01-19 01:05:52,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 715 transitions, 6571 flow [2022-01-19 01:05:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 01:05:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 01:05:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8135 transitions. [2022-01-19 01:05:52,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6836134453781513 [2022-01-19 01:05:52,869 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8135 transitions. [2022-01-19 01:05:52,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8135 transitions. [2022-01-19 01:05:52,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:05:52,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8135 transitions. [2022-01-19 01:05:52,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 232.42857142857142) internal successors, (8135), 35 states have internal predecessors, (8135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:52,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:52,879 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:52,879 INFO L186 Difference]: Start difference. First operand has 658 places, 521 transitions, 4608 flow. Second operand 35 states and 8135 transitions. [2022-01-19 01:05:52,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 715 transitions, 6571 flow [2022-01-19 01:05:53,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 715 transitions, 6483 flow, removed 23 selfloop flow, removed 22 redundant places. [2022-01-19 01:05:53,681 INFO L242 Difference]: Finished difference. Result has 669 places, 531 transitions, 4777 flow [2022-01-19 01:05:53,681 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4777, PETRI_PLACES=669, PETRI_TRANSITIONS=531} [2022-01-19 01:05:53,682 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 368 predicate places. [2022-01-19 01:05:53,682 INFO L470 AbstractCegarLoop]: Abstraction has has 669 places, 531 transitions, 4777 flow [2022-01-19 01:05:53,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:53,682 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:05:53,683 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:05:53,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 01:05:53,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:05:53,883 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:05:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:05:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1627662569, now seen corresponding path program 1 times [2022-01-19 01:05:53,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:05:53,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124050607] [2022-01-19 01:05:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:05:53,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:05:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:05:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:05:54,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:05:54,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124050607] [2022-01-19 01:05:54,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124050607] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:05:54,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142065622] [2022-01-19 01:05:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:05:54,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:05:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:05:54,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:05:54,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 01:05:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:05:54,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 01:05:54,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:05:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:05:54,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:05:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:05:54,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142065622] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 01:05:54,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 01:05:54,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-01-19 01:05:54,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244554154] [2022-01-19 01:05:54,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:05:54,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 01:05:54,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:05:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 01:05:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-19 01:05:54,907 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 340 [2022-01-19 01:05:54,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 531 transitions, 4777 flow. Second operand has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:05:54,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:05:54,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 340 [2022-01-19 01:05:54,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:06:03,700 INFO L129 PetriNetUnfolder]: 6980/41541 cut-off events. [2022-01-19 01:06:03,700 INFO L130 PetriNetUnfolder]: For 89591/93094 co-relation queries the response was YES. [2022-01-19 01:06:05,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88920 conditions, 41541 events. 6980/41541 cut-off events. For 89591/93094 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 653929 event pairs, 2867 based on Foata normal form. 139/36727 useless extension candidates. Maximal degree in co-relation 88769. Up to 5289 conditions per place. [2022-01-19 01:06:05,226 INFO L132 encePairwiseOnDemand]: 316/340 looper letters, 205 selfloop transitions, 30 changer transitions 4/605 dead transitions. [2022-01-19 01:06:05,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 605 transitions, 5524 flow [2022-01-19 01:06:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 01:06:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 01:06:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4864 transitions. [2022-01-19 01:06:05,229 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7152941176470589 [2022-01-19 01:06:05,229 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4864 transitions. [2022-01-19 01:06:05,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4864 transitions. [2022-01-19 01:06:05,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:06:05,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4864 transitions. [2022-01-19 01:06:05,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 243.2) internal successors, (4864), 20 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:05,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 340.0) internal successors, (7140), 21 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:05,235 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 340.0) internal successors, (7140), 21 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:05,235 INFO L186 Difference]: Start difference. First operand has 669 places, 531 transitions, 4777 flow. Second operand 20 states and 4864 transitions. [2022-01-19 01:06:05,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 605 transitions, 5524 flow [2022-01-19 01:06:05,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 605 transitions, 5449 flow, removed 13 selfloop flow, removed 24 redundant places. [2022-01-19 01:06:05,725 INFO L242 Difference]: Finished difference. Result has 660 places, 532 transitions, 4803 flow [2022-01-19 01:06:05,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4720, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4803, PETRI_PLACES=660, PETRI_TRANSITIONS=532} [2022-01-19 01:06:05,726 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 359 predicate places. [2022-01-19 01:06:05,726 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 532 transitions, 4803 flow [2022-01-19 01:06:05,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:05,726 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:06:05,726 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:06:05,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 01:06:05,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:06:05,939 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:06:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:06:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash 496985548, now seen corresponding path program 4 times [2022-01-19 01:06:05,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:06:05,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122832499] [2022-01-19 01:06:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:05,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:06:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:06,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:06:06,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122832499] [2022-01-19 01:06:06,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122832499] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:06:06,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296796468] [2022-01-19 01:06:06,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 01:06:06,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:06:06,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:06:06,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:06:06,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 01:06:06,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 01:06:06,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:06:06,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 01:06:06,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:06:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:07,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:06:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:08,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296796468] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 01:06:08,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 01:06:08,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-01-19 01:06:08,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647962916] [2022-01-19 01:06:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:06:08,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 01:06:08,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:06:08,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 01:06:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 01:06:08,497 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 01:06:08,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 532 transitions, 4803 flow. Second operand has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:08,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:06:08,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 01:06:08,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:06:21,731 INFO L129 PetriNetUnfolder]: 11831/61666 cut-off events. [2022-01-19 01:06:21,732 INFO L130 PetriNetUnfolder]: For 154490/161167 co-relation queries the response was YES. [2022-01-19 01:06:24,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135321 conditions, 61666 events. 11831/61666 cut-off events. For 154490/161167 co-relation queries the response was YES. Maximal size of possible extension queue 2407. Compared 1014584 event pairs, 6509 based on Foata normal form. 580/54663 useless extension candidates. Maximal degree in co-relation 135170. Up to 7434 conditions per place. [2022-01-19 01:06:24,269 INFO L132 encePairwiseOnDemand]: 312/340 looper letters, 340 selfloop transitions, 46 changer transitions 18/740 dead transitions. [2022-01-19 01:06:24,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 740 transitions, 6947 flow [2022-01-19 01:06:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 01:06:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 01:06:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7103 transitions. [2022-01-19 01:06:24,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6963725490196079 [2022-01-19 01:06:24,272 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7103 transitions. [2022-01-19 01:06:24,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7103 transitions. [2022-01-19 01:06:24,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:06:24,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7103 transitions. [2022-01-19 01:06:24,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 236.76666666666668) internal successors, (7103), 30 states have internal predecessors, (7103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:24,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:24,281 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:24,281 INFO L186 Difference]: Start difference. First operand has 660 places, 532 transitions, 4803 flow. Second operand 30 states and 7103 transitions. [2022-01-19 01:06:24,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 740 transitions, 6947 flow [2022-01-19 01:06:25,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 740 transitions, 6880 flow, removed 11 selfloop flow, removed 14 redundant places. [2022-01-19 01:06:25,241 INFO L242 Difference]: Finished difference. Result has 677 places, 533 transitions, 4863 flow [2022-01-19 01:06:25,241 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4746, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4863, PETRI_PLACES=677, PETRI_TRANSITIONS=533} [2022-01-19 01:06:25,242 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 376 predicate places. [2022-01-19 01:06:25,242 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 533 transitions, 4863 flow [2022-01-19 01:06:25,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:25,242 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:06:25,242 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:06:25,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 01:06:25,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:06:25,445 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:06:25,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:06:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -551412746, now seen corresponding path program 1 times [2022-01-19 01:06:25,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:06:25,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420611200] [2022-01-19 01:06:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:25,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:06:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:25,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:06:25,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420611200] [2022-01-19 01:06:25,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420611200] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:06:25,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312434462] [2022-01-19 01:06:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:25,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:06:25,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:06:25,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:06:25,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 01:06:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:25,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 01:06:25,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:06:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:26,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:06:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:26,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312434462] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 01:06:26,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 01:06:26,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-01-19 01:06:26,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591617876] [2022-01-19 01:06:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:06:26,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 01:06:26,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:06:26,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 01:06:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-19 01:06:26,513 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 340 [2022-01-19 01:06:26,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 533 transitions, 4863 flow. Second operand has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:26,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:06:26,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 340 [2022-01-19 01:06:26,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:06:37,387 INFO L129 PetriNetUnfolder]: 8459/50435 cut-off events. [2022-01-19 01:06:37,388 INFO L130 PetriNetUnfolder]: For 108250/112469 co-relation queries the response was YES. [2022-01-19 01:06:39,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106566 conditions, 50435 events. 8459/50435 cut-off events. For 108250/112469 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 819491 event pairs, 3784 based on Foata normal form. 67/44526 useless extension candidates. Maximal degree in co-relation 106413. Up to 9470 conditions per place. [2022-01-19 01:06:39,329 INFO L132 encePairwiseOnDemand]: 319/340 looper letters, 217 selfloop transitions, 39 changer transitions 4/626 dead transitions. [2022-01-19 01:06:39,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 626 transitions, 5740 flow [2022-01-19 01:06:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 01:06:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 01:06:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4398 transitions. [2022-01-19 01:06:39,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7186274509803922 [2022-01-19 01:06:39,331 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4398 transitions. [2022-01-19 01:06:39,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4398 transitions. [2022-01-19 01:06:39,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:06:39,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4398 transitions. [2022-01-19 01:06:39,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 244.33333333333334) internal successors, (4398), 18 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:39,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 340.0) internal successors, (6460), 19 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:39,337 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 340.0) internal successors, (6460), 19 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:39,337 INFO L186 Difference]: Start difference. First operand has 677 places, 533 transitions, 4863 flow. Second operand 18 states and 4398 transitions. [2022-01-19 01:06:39,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 626 transitions, 5740 flow [2022-01-19 01:06:39,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 626 transitions, 5631 flow, removed 7 selfloop flow, removed 26 redundant places. [2022-01-19 01:06:39,981 INFO L242 Difference]: Finished difference. Result has 675 places, 540 transitions, 4933 flow [2022-01-19 01:06:39,981 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4770, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4933, PETRI_PLACES=675, PETRI_TRANSITIONS=540} [2022-01-19 01:06:39,982 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 374 predicate places. [2022-01-19 01:06:39,982 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 540 transitions, 4933 flow [2022-01-19 01:06:39,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:39,982 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:06:39,982 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:06:39,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-19 01:06:40,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:06:40,190 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:06:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:06:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1461126064, now seen corresponding path program 1 times [2022-01-19 01:06:40,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:06:40,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503154282] [2022-01-19 01:06:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:40,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:06:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:40,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:06:40,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503154282] [2022-01-19 01:06:40,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503154282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:06:40,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:06:40,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 01:06:40,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890885018] [2022-01-19 01:06:40,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:06:40,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 01:06:40,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:06:40,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 01:06:40,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 01:06:40,241 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 01:06:40,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 540 transitions, 4933 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:40,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:06:40,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 01:06:40,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:06:45,507 INFO L129 PetriNetUnfolder]: 3608/24349 cut-off events. [2022-01-19 01:06:45,507 INFO L130 PetriNetUnfolder]: For 85485/89284 co-relation queries the response was YES. [2022-01-19 01:06:46,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61172 conditions, 24349 events. 3608/24349 cut-off events. For 85485/89284 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 366642 event pairs, 1254 based on Foata normal form. 27/22345 useless extension candidates. Maximal degree in co-relation 61012. Up to 2900 conditions per place. [2022-01-19 01:06:46,194 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 104 selfloop transitions, 12 changer transitions 26/558 dead transitions. [2022-01-19 01:06:46,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 558 transitions, 5249 flow [2022-01-19 01:06:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:06:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:06:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2784 transitions. [2022-01-19 01:06:46,196 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8188235294117647 [2022-01-19 01:06:46,196 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2784 transitions. [2022-01-19 01:06:46,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2784 transitions. [2022-01-19 01:06:46,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:06:46,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2784 transitions. [2022-01-19 01:06:46,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 278.4) internal successors, (2784), 10 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:46,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:46,200 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:46,200 INFO L186 Difference]: Start difference. First operand has 675 places, 540 transitions, 4933 flow. Second operand 10 states and 2784 transitions. [2022-01-19 01:06:46,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 558 transitions, 5249 flow [2022-01-19 01:06:46,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 558 transitions, 5195 flow, removed 12 selfloop flow, removed 11 redundant places. [2022-01-19 01:06:46,699 INFO L242 Difference]: Finished difference. Result has 673 places, 509 transitions, 4677 flow [2022-01-19 01:06:46,700 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4677, PETRI_PLACES=673, PETRI_TRANSITIONS=509} [2022-01-19 01:06:46,700 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 372 predicate places. [2022-01-19 01:06:46,700 INFO L470 AbstractCegarLoop]: Abstraction has has 673 places, 509 transitions, 4677 flow [2022-01-19 01:06:46,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:46,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:06:46,701 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:06:46,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 01:06:46,701 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:06:46,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:06:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash -633588800, now seen corresponding path program 1 times [2022-01-19 01:06:46,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:06:46,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368398914] [2022-01-19 01:06:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:46,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:06:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:46,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:06:46,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368398914] [2022-01-19 01:06:46,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368398914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:06:46,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:06:46,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 01:06:46,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486056047] [2022-01-19 01:06:46,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:06:46,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 01:06:46,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:06:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 01:06:46,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 01:06:46,749 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 01:06:46,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 509 transitions, 4677 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:46,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:06:46,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 01:06:46,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:06:49,833 INFO L129 PetriNetUnfolder]: 2595/13834 cut-off events. [2022-01-19 01:06:49,834 INFO L130 PetriNetUnfolder]: For 47505/49783 co-relation queries the response was YES. [2022-01-19 01:06:49,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36566 conditions, 13834 events. 2595/13834 cut-off events. For 47505/49783 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 180979 event pairs, 1182 based on Foata normal form. 58/12761 useless extension candidates. Maximal degree in co-relation 36407. Up to 3153 conditions per place. [2022-01-19 01:06:50,013 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 102 selfloop transitions, 12 changer transitions 6/529 dead transitions. [2022-01-19 01:06:50,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 529 transitions, 4981 flow [2022-01-19 01:06:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:06:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:06:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2780 transitions. [2022-01-19 01:06:50,015 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-01-19 01:06:50,015 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2780 transitions. [2022-01-19 01:06:50,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2780 transitions. [2022-01-19 01:06:50,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:06:50,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2780 transitions. [2022-01-19 01:06:50,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:50,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:50,018 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:50,018 INFO L186 Difference]: Start difference. First operand has 673 places, 509 transitions, 4677 flow. Second operand 10 states and 2780 transitions. [2022-01-19 01:06:50,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 529 transitions, 4981 flow [2022-01-19 01:06:50,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 529 transitions, 4930 flow, removed 3 selfloop flow, removed 20 redundant places. [2022-01-19 01:06:50,249 INFO L242 Difference]: Finished difference. Result has 651 places, 502 transitions, 4601 flow [2022-01-19 01:06:50,249 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4582, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4601, PETRI_PLACES=651, PETRI_TRANSITIONS=502} [2022-01-19 01:06:50,250 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 350 predicate places. [2022-01-19 01:06:50,250 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 502 transitions, 4601 flow [2022-01-19 01:06:50,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:50,250 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:06:50,250 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:06:50,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 01:06:50,250 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:06:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:06:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash -556891992, now seen corresponding path program 1 times [2022-01-19 01:06:50,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:06:50,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760464362] [2022-01-19 01:06:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:50,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:06:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:50,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:06:50,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760464362] [2022-01-19 01:06:50,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760464362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:06:50,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:06:50,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 01:06:50,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740924085] [2022-01-19 01:06:50,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:06:50,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 01:06:50,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:06:50,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 01:06:50,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 01:06:50,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 01:06:50,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 502 transitions, 4601 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:50,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:06:50,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 01:06:50,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:06:52,707 INFO L129 PetriNetUnfolder]: 1639/10470 cut-off events. [2022-01-19 01:06:52,707 INFO L130 PetriNetUnfolder]: For 42344/44307 co-relation queries the response was YES. [2022-01-19 01:06:52,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29702 conditions, 10470 events. 1639/10470 cut-off events. For 42344/44307 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 132194 event pairs, 441 based on Foata normal form. 34/9758 useless extension candidates. Maximal degree in co-relation 29546. Up to 1301 conditions per place. [2022-01-19 01:06:52,851 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 81 selfloop transitions, 12 changer transitions 45/530 dead transitions. [2022-01-19 01:06:52,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 530 transitions, 4948 flow [2022-01-19 01:06:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:06:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:06:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2773 transitions. [2022-01-19 01:06:52,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8155882352941176 [2022-01-19 01:06:52,853 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2773 transitions. [2022-01-19 01:06:52,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2773 transitions. [2022-01-19 01:06:52,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:06:52,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2773 transitions. [2022-01-19 01:06:52,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 277.3) internal successors, (2773), 10 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:52,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:52,856 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:52,856 INFO L186 Difference]: Start difference. First operand has 651 places, 502 transitions, 4601 flow. Second operand 10 states and 2773 transitions. [2022-01-19 01:06:52,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 530 transitions, 4948 flow [2022-01-19 01:06:53,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 530 transitions, 4912 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-01-19 01:06:53,063 INFO L242 Difference]: Finished difference. Result has 651 places, 460 transitions, 4201 flow [2022-01-19 01:06:53,064 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4547, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4201, PETRI_PLACES=651, PETRI_TRANSITIONS=460} [2022-01-19 01:06:53,064 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 350 predicate places. [2022-01-19 01:06:53,064 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 460 transitions, 4201 flow [2022-01-19 01:06:53,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:53,064 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:06:53,064 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:06:53,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 01:06:53,065 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:06:53,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:06:53,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1630836678, now seen corresponding path program 1 times [2022-01-19 01:06:53,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:06:53,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449608671] [2022-01-19 01:06:53,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:53,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:06:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:53,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:06:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449608671] [2022-01-19 01:06:53,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449608671] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:06:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838426132] [2022-01-19 01:06:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:53,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:06:53,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:06:53,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:06:53,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 01:06:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:53,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 01:06:53,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:06:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:53,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:06:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:06:54,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838426132] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 01:06:54,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 01:06:54,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-01-19 01:06:54,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056617459] [2022-01-19 01:06:54,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:06:54,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 01:06:54,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:06:54,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 01:06:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-19 01:06:54,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 340 [2022-01-19 01:06:54,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 460 transitions, 4201 flow. Second operand has 11 states, 11 states have (on average 267.45454545454544) internal successors, (2942), 11 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:54,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:06:54,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 340 [2022-01-19 01:06:54,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:06:57,730 INFO L129 PetriNetUnfolder]: 3619/17220 cut-off events. [2022-01-19 01:06:57,731 INFO L130 PetriNetUnfolder]: For 32023/33157 co-relation queries the response was YES. [2022-01-19 01:06:57,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37430 conditions, 17220 events. 3619/17220 cut-off events. For 32023/33157 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 227169 event pairs, 1146 based on Foata normal form. 193/16129 useless extension candidates. Maximal degree in co-relation 37274. Up to 1892 conditions per place. [2022-01-19 01:06:57,977 INFO L132 encePairwiseOnDemand]: 323/340 looper letters, 105 selfloop transitions, 18 changer transitions 1/512 dead transitions. [2022-01-19 01:06:57,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 512 transitions, 4639 flow [2022-01-19 01:06:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 01:06:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 01:06:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4068 transitions. [2022-01-19 01:06:57,980 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7976470588235294 [2022-01-19 01:06:57,980 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4068 transitions. [2022-01-19 01:06:57,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4068 transitions. [2022-01-19 01:06:57,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:06:57,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4068 transitions. [2022-01-19 01:06:57,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 271.2) internal successors, (4068), 15 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:57,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 340.0) internal successors, (5440), 16 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:57,985 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 340.0) internal successors, (5440), 16 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:57,985 INFO L186 Difference]: Start difference. First operand has 651 places, 460 transitions, 4201 flow. Second operand 15 states and 4068 transitions. [2022-01-19 01:06:57,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 512 transitions, 4639 flow [2022-01-19 01:06:58,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 512 transitions, 4443 flow, removed 59 selfloop flow, removed 40 redundant places. [2022-01-19 01:06:58,218 INFO L242 Difference]: Finished difference. Result has 582 places, 465 transitions, 4132 flow [2022-01-19 01:06:58,218 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4132, PETRI_PLACES=582, PETRI_TRANSITIONS=465} [2022-01-19 01:06:58,219 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 281 predicate places. [2022-01-19 01:06:58,219 INFO L470 AbstractCegarLoop]: Abstraction has has 582 places, 465 transitions, 4132 flow [2022-01-19 01:06:58,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 267.45454545454544) internal successors, (2942), 11 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:58,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:06:58,219 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:06:58,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 01:06:58,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:06:58,423 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:06:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:06:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash 520118201, now seen corresponding path program 1 times [2022-01-19 01:06:58,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:06:58,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959027955] [2022-01-19 01:06:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:58,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:06:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:06:58,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:06:58,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959027955] [2022-01-19 01:06:58,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959027955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:06:58,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:06:58,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 01:06:58,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977750535] [2022-01-19 01:06:58,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:06:58,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 01:06:58,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:06:58,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 01:06:58,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 01:06:58,468 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 01:06:58,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 465 transitions, 4132 flow. Second operand has 7 states, 7 states have (on average 274.2857142857143) internal successors, (1920), 7 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:58,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:06:58,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 01:06:58,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:06:59,645 INFO L129 PetriNetUnfolder]: 821/5563 cut-off events. [2022-01-19 01:06:59,645 INFO L130 PetriNetUnfolder]: For 16521/17362 co-relation queries the response was YES. [2022-01-19 01:06:59,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13195 conditions, 5563 events. 821/5563 cut-off events. For 16521/17362 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 60950 event pairs, 328 based on Foata normal form. 58/5232 useless extension candidates. Maximal degree in co-relation 13063. Up to 1156 conditions per place. [2022-01-19 01:06:59,729 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 56 selfloop transitions, 8 changer transitions 29/485 dead transitions. [2022-01-19 01:06:59,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 485 transitions, 4362 flow [2022-01-19 01:06:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:06:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:06:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2770 transitions. [2022-01-19 01:06:59,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8147058823529412 [2022-01-19 01:06:59,731 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2770 transitions. [2022-01-19 01:06:59,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2770 transitions. [2022-01-19 01:06:59,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:06:59,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2770 transitions. [2022-01-19 01:06:59,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 277.0) internal successors, (2770), 10 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:59,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:59,734 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:59,734 INFO L186 Difference]: Start difference. First operand has 582 places, 465 transitions, 4132 flow. Second operand 10 states and 2770 transitions. [2022-01-19 01:06:59,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 485 transitions, 4362 flow [2022-01-19 01:06:59,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 485 transitions, 4336 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-01-19 01:06:59,805 INFO L242 Difference]: Finished difference. Result has 580 places, 454 transitions, 4066 flow [2022-01-19 01:06:59,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4098, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4066, PETRI_PLACES=580, PETRI_TRANSITIONS=454} [2022-01-19 01:06:59,805 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 279 predicate places. [2022-01-19 01:06:59,805 INFO L470 AbstractCegarLoop]: Abstraction has has 580 places, 454 transitions, 4066 flow [2022-01-19 01:06:59,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 274.2857142857143) internal successors, (1920), 7 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:06:59,805 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:06:59,806 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:06:59,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 01:06:59,806 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:06:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:06:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash 438695501, now seen corresponding path program 1 times [2022-01-19 01:06:59,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:06:59,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482559165] [2022-01-19 01:06:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:59,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:06:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:06:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:06:59,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:06:59,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482559165] [2022-01-19 01:06:59,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482559165] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:06:59,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477348917] [2022-01-19 01:06:59,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:06:59,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:06:59,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:06:59,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:06:59,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 01:07:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:07:00,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 01:07:00,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:07:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:07:00,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:07:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:07:01,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477348917] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 01:07:01,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 01:07:01,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [20, 18] total 37 [2022-01-19 01:07:01,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951359816] [2022-01-19 01:07:01,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:07:01,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 01:07:01,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:07:01,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 01:07:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2022-01-19 01:07:01,958 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 01:07:01,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 454 transitions, 4066 flow. Second operand has 18 states, 18 states have (on average 232.38888888888889) internal successors, (4183), 18 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:01,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:07:01,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 01:07:01,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:07:06,148 INFO L129 PetriNetUnfolder]: 4137/20863 cut-off events. [2022-01-19 01:07:06,148 INFO L130 PetriNetUnfolder]: For 37393/40526 co-relation queries the response was YES. [2022-01-19 01:07:06,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42327 conditions, 20863 events. 4137/20863 cut-off events. For 37393/40526 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 290340 event pairs, 1940 based on Foata normal form. 763/19653 useless extension candidates. Maximal degree in co-relation 42196. Up to 3149 conditions per place. [2022-01-19 01:07:06,486 INFO L132 encePairwiseOnDemand]: 317/340 looper letters, 169 selfloop transitions, 24 changer transitions 14/543 dead transitions. [2022-01-19 01:07:06,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 543 transitions, 4958 flow [2022-01-19 01:07:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 01:07:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 01:07:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5169 transitions. [2022-01-19 01:07:06,489 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6910427807486631 [2022-01-19 01:07:06,489 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5169 transitions. [2022-01-19 01:07:06,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5169 transitions. [2022-01-19 01:07:06,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:07:06,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5169 transitions. [2022-01-19 01:07:06,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 234.95454545454547) internal successors, (5169), 22 states have internal predecessors, (5169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:06,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 340.0) internal successors, (7820), 23 states have internal predecessors, (7820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:06,495 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 340.0) internal successors, (7820), 23 states have internal predecessors, (7820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:06,495 INFO L186 Difference]: Start difference. First operand has 580 places, 454 transitions, 4066 flow. Second operand 22 states and 5169 transitions. [2022-01-19 01:07:06,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 543 transitions, 4958 flow [2022-01-19 01:07:06,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 543 transitions, 4879 flow, removed 13 selfloop flow, removed 17 redundant places. [2022-01-19 01:07:06,658 INFO L242 Difference]: Finished difference. Result has 583 places, 458 transitions, 4093 flow [2022-01-19 01:07:06,659 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4093, PETRI_PLACES=583, PETRI_TRANSITIONS=458} [2022-01-19 01:07:06,659 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 282 predicate places. [2022-01-19 01:07:06,659 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 458 transitions, 4093 flow [2022-01-19 01:07:06,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.38888888888889) internal successors, (4183), 18 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:06,660 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:07:06,660 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:07:06,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 01:07:06,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-19 01:07:06,861 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:07:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:07:06,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1482609683, now seen corresponding path program 2 times [2022-01-19 01:07:06,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:07:06,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165900974] [2022-01-19 01:07:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:07:06,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:07:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:07:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:07:07,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:07:07,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165900974] [2022-01-19 01:07:07,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165900974] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:07:07,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733592355] [2022-01-19 01:07:07,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 01:07:07,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:07:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:07:07,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:07:07,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 01:07:07,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 01:07:07,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:07:07,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 01:07:07,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:07:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 01:07:07,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 01:07:07,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733592355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:07:07,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 01:07:07,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 26 [2022-01-19 01:07:07,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828015475] [2022-01-19 01:07:07,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:07:07,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 01:07:07,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:07:07,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 01:07:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2022-01-19 01:07:07,756 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 340 [2022-01-19 01:07:07,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 458 transitions, 4093 flow. Second operand has 10 states, 10 states have (on average 257.7) internal successors, (2577), 10 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:07,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:07:07,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 340 [2022-01-19 01:07:07,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:07:12,956 INFO L129 PetriNetUnfolder]: 4979/25792 cut-off events. [2022-01-19 01:07:12,957 INFO L130 PetriNetUnfolder]: For 46898/51259 co-relation queries the response was YES. [2022-01-19 01:07:13,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51139 conditions, 25792 events. 4979/25792 cut-off events. For 46898/51259 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 371953 event pairs, 1686 based on Foata normal form. 880/24257 useless extension candidates. Maximal degree in co-relation 51009. Up to 4667 conditions per place. [2022-01-19 01:07:13,394 INFO L132 encePairwiseOnDemand]: 330/340 looper letters, 128 selfloop transitions, 2 changer transitions 37/534 dead transitions. [2022-01-19 01:07:13,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 534 transitions, 4853 flow [2022-01-19 01:07:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 01:07:13,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 01:07:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2886 transitions. [2022-01-19 01:07:13,396 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7716577540106951 [2022-01-19 01:07:13,396 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2886 transitions. [2022-01-19 01:07:13,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2886 transitions. [2022-01-19 01:07:13,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:07:13,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2886 transitions. [2022-01-19 01:07:13,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 262.3636363636364) internal successors, (2886), 11 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:13,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:13,400 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:13,400 INFO L186 Difference]: Start difference. First operand has 583 places, 458 transitions, 4093 flow. Second operand 11 states and 2886 transitions. [2022-01-19 01:07:13,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 534 transitions, 4853 flow [2022-01-19 01:07:13,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 534 transitions, 4790 flow, removed 7 selfloop flow, removed 18 redundant places. [2022-01-19 01:07:13,542 INFO L242 Difference]: Finished difference. Result has 582 places, 459 transitions, 4073 flow [2022-01-19 01:07:13,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4040, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4073, PETRI_PLACES=582, PETRI_TRANSITIONS=459} [2022-01-19 01:07:13,543 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 281 predicate places. [2022-01-19 01:07:13,543 INFO L470 AbstractCegarLoop]: Abstraction has has 582 places, 459 transitions, 4073 flow [2022-01-19 01:07:13,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 257.7) internal successors, (2577), 10 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:13,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:07:13,543 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:07:13,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 01:07:13,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:07:13,745 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:07:13,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:07:13,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1441027375, now seen corresponding path program 3 times [2022-01-19 01:07:13,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:07:13,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263846378] [2022-01-19 01:07:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:07:13,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:07:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:07:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:07:13,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:07:13,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263846378] [2022-01-19 01:07:13,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263846378] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:07:13,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305012167] [2022-01-19 01:07:13,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 01:07:13,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:07:13,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:07:13,960 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:07:13,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 01:07:14,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 01:07:14,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:07:14,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 01:07:14,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:07:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 01:07:14,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 01:07:14,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305012167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:07:14,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 01:07:14,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [20] total 36 [2022-01-19 01:07:14,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695822287] [2022-01-19 01:07:14,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:07:14,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-19 01:07:14,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:07:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-19 01:07:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 01:07:14,778 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 01:07:14,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 459 transitions, 4073 flow. Second operand has 20 states, 20 states have (on average 229.0) internal successors, (4580), 20 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:14,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:07:14,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 01:07:14,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:07:21,137 INFO L129 PetriNetUnfolder]: 5151/27894 cut-off events. [2022-01-19 01:07:21,137 INFO L130 PetriNetUnfolder]: For 53489/57862 co-relation queries the response was YES. [2022-01-19 01:07:21,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57770 conditions, 27894 events. 5151/27894 cut-off events. For 53489/57862 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 411596 event pairs, 2954 based on Foata normal form. 880/26181 useless extension candidates. Maximal degree in co-relation 57633. Up to 4266 conditions per place. [2022-01-19 01:07:21,671 INFO L132 encePairwiseOnDemand]: 308/340 looper letters, 175 selfloop transitions, 41 changer transitions 14/564 dead transitions. [2022-01-19 01:07:21,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 564 transitions, 5135 flow [2022-01-19 01:07:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 01:07:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 01:07:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6921 transitions. [2022-01-19 01:07:21,674 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6785294117647059 [2022-01-19 01:07:21,674 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6921 transitions. [2022-01-19 01:07:21,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6921 transitions. [2022-01-19 01:07:21,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:07:21,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6921 transitions. [2022-01-19 01:07:21,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 230.7) internal successors, (6921), 30 states have internal predecessors, (6921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:21,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:21,683 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:21,683 INFO L186 Difference]: Start difference. First operand has 582 places, 459 transitions, 4073 flow. Second operand 30 states and 6921 transitions. [2022-01-19 01:07:21,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 564 transitions, 5135 flow [2022-01-19 01:07:21,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 564 transitions, 5063 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-01-19 01:07:21,914 INFO L242 Difference]: Finished difference. Result has 604 places, 475 transitions, 4234 flow [2022-01-19 01:07:21,914 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4058, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4234, PETRI_PLACES=604, PETRI_TRANSITIONS=475} [2022-01-19 01:07:21,914 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 303 predicate places. [2022-01-19 01:07:21,914 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 475 transitions, 4234 flow [2022-01-19 01:07:21,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 229.0) internal successors, (4580), 20 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:21,915 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:07:21,915 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:07:21,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 01:07:22,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-01-19 01:07:22,123 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:07:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:07:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash -532894407, now seen corresponding path program 4 times [2022-01-19 01:07:22,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:07:22,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38959033] [2022-01-19 01:07:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:07:22,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:07:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:07:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:07:22,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:07:22,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38959033] [2022-01-19 01:07:22,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38959033] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:07:22,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527755430] [2022-01-19 01:07:22,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 01:07:22,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:07:22,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:07:22,340 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:07:22,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 01:07:22,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 01:07:22,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:07:22,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 01:07:22,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:07:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:07:23,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:07:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:07:24,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527755430] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 01:07:24,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 01:07:24,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [20, 18] total 37 [2022-01-19 01:07:24,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442426634] [2022-01-19 01:07:24,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:07:24,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 01:07:24,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:07:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 01:07:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2022-01-19 01:07:24,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 01:07:24,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 475 transitions, 4234 flow. Second operand has 18 states, 18 states have (on average 232.38888888888889) internal successors, (4183), 18 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:24,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:07:24,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 01:07:24,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:07:29,672 INFO L129 PetriNetUnfolder]: 4629/26122 cut-off events. [2022-01-19 01:07:29,673 INFO L130 PetriNetUnfolder]: For 52877/56971 co-relation queries the response was YES. [2022-01-19 01:07:30,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55386 conditions, 26122 events. 4629/26122 cut-off events. For 52877/56971 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 383330 event pairs, 2597 based on Foata normal form. 860/24540 useless extension candidates. Maximal degree in co-relation 55248. Up to 3928 conditions per place. [2022-01-19 01:07:30,060 INFO L132 encePairwiseOnDemand]: 317/340 looper letters, 171 selfloop transitions, 27 changer transitions 13/547 dead transitions. [2022-01-19 01:07:30,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 547 transitions, 5120 flow [2022-01-19 01:07:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 01:07:30,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 01:07:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5169 transitions. [2022-01-19 01:07:30,063 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6910427807486631 [2022-01-19 01:07:30,063 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5169 transitions. [2022-01-19 01:07:30,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5169 transitions. [2022-01-19 01:07:30,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:07:30,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5169 transitions. [2022-01-19 01:07:30,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 234.95454545454547) internal successors, (5169), 22 states have internal predecessors, (5169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:30,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 340.0) internal successors, (7820), 23 states have internal predecessors, (7820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:30,069 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 340.0) internal successors, (7820), 23 states have internal predecessors, (7820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:30,069 INFO L186 Difference]: Start difference. First operand has 604 places, 475 transitions, 4234 flow. Second operand 22 states and 5169 transitions. [2022-01-19 01:07:30,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 547 transitions, 5120 flow [2022-01-19 01:07:30,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 547 transitions, 5058 flow, removed 15 selfloop flow, removed 17 redundant places. [2022-01-19 01:07:30,248 INFO L242 Difference]: Finished difference. Result has 602 places, 471 transitions, 4233 flow [2022-01-19 01:07:30,248 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4194, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4233, PETRI_PLACES=602, PETRI_TRANSITIONS=471} [2022-01-19 01:07:30,248 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 301 predicate places. [2022-01-19 01:07:30,248 INFO L470 AbstractCegarLoop]: Abstraction has has 602 places, 471 transitions, 4233 flow [2022-01-19 01:07:30,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.38888888888889) internal successors, (4183), 18 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:07:30,249 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:07:30,249 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:07:30,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-19 01:07:30,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:07:30,450 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:07:30,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:07:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1642384188, now seen corresponding path program 1 times [2022-01-19 01:07:30,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:07:30,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754180461] [2022-01-19 01:07:30,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:07:30,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:07:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:07:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:07:30,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:07:30,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754180461] [2022-01-19 01:07:30,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754180461] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:07:30,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209665359] [2022-01-19 01:07:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:07:30,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:07:30,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:07:30,565 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:07:30,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 01:07:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:07:30,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 01:07:30,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-01-19 01:07:30,804 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 01:07:30,817 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 01:07:30,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-19 01:07:30,835 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 01:07:31,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:07:31,005 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 221 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. [2022-01-19 01:07:31,006 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 01:07:31,006 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 01:07:31,006 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 01:07:31,009 INFO L732 BasicCegarLoop]: Path program histogram: [12, 12, 6, 6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:07:31,010 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 01:07:31,010 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 01:07:31,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:07:31 BasicIcfg [2022-01-19 01:07:31,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 01:07:31,012 INFO L158 Benchmark]: Toolchain (without parser) took 712339.58ms. Allocated memory was 429.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 372.4MB in the beginning and 12.9GB in the end (delta: -12.5GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2022-01-19 01:07:31,012 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 429.9MB. Free memory was 389.6MB in the beginning and 389.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 01:07:31,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.15ms. Allocated memory was 429.9MB in the beginning and 568.3MB in the end (delta: 138.4MB). Free memory was 372.2MB in the beginning and 537.8MB in the end (delta: -165.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.0GB. [2022-01-19 01:07:31,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.37ms. Allocated memory is still 568.3MB. Free memory was 536.8MB in the beginning and 534.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 01:07:31,013 INFO L158 Benchmark]: Boogie Preprocessor took 31.48ms. Allocated memory is still 568.3MB. Free memory was 534.7MB in the beginning and 533.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 01:07:31,013 INFO L158 Benchmark]: RCFGBuilder took 446.01ms. Allocated memory is still 568.3MB. Free memory was 533.4MB in the beginning and 507.4MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2022-01-19 01:07:31,013 INFO L158 Benchmark]: TraceAbstraction took 711544.27ms. Allocated memory was 568.3MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 507.4MB in the beginning and 12.9GB in the end (delta: -12.4GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2022-01-19 01:07:31,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 429.9MB. Free memory was 389.6MB in the beginning and 389.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 270.15ms. Allocated memory was 429.9MB in the beginning and 568.3MB in the end (delta: 138.4MB). Free memory was 372.2MB in the beginning and 537.8MB in the end (delta: -165.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.37ms. Allocated memory is still 568.3MB. Free memory was 536.8MB in the beginning and 534.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.48ms. Allocated memory is still 568.3MB. Free memory was 534.7MB in the beginning and 533.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 446.01ms. Allocated memory is still 568.3MB. Free memory was 533.4MB in the beginning and 507.4MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 711544.27ms. Allocated memory was 568.3MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 507.4MB in the beginning and 12.9GB in the end (delta: -12.4GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 221 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 221 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 221 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 221 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 411 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 711.4s, OverallIterations: 74, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 685.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10973 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10973 mSDsluCounter, 14680 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15721 mSDsCounter, 408 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19805 IncrementalHoareTripleChecker+Invalid, 20213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 408 mSolverCounterUnsat, 2493 mSDtfsCounter, 19805 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4767 GetRequests, 3669 SyntacticMatches, 17 SemanticMatches, 1081 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8952 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4933occurred in iteration=64, InterpolantAutomatonStates: 810, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 16306 NumberOfCodeBlocks, 16209 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 17633 ConstructedInterpolants, 0 QuantifiedInterpolants, 64818 SizeOfPredicates, 169 NumberOfNonLiveVariables, 4821 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 91 InterpolantComputations, 73 PerfectInterpolantSequences, 27/53 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown