/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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:20:15,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:20:15,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:20:16,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:20:16,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:20:16,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:20:16,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:20:16,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:20:16,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:20:16,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:20:16,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:20:16,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:20:16,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:20:16,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:20:16,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:20:16,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:20:16,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:20:16,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:20:16,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:20:16,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:20:16,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:20:16,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:20:16,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:20:16,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:20:16,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 07:20:16,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 07:20:16,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 07:20:16,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 07:20:16,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 07:20:16,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 07:20:16,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 07:20:16,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 07:20:16,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 07:20:16,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 07:20:16,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 07:20:16,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 07:20:16,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 07:20:16,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 07:20:16,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:20:16,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:20:16,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:20:16,087 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-Before.epf [2022-01-19 07:20:16,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:20:16,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:20:16,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:20:16,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:20:16,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:20:16,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:20:16,116 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:20:16,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:20:16,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:20:16,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:20:16,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:20:16,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:20:16,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:20:16,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:20:16,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:20:16,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:20:16,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:20:16,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:20:16,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:20:16,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:20:16,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:20:16,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:20:16,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:20:16,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:20:16,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:20:16,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:20:16,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:20:16,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:20:16,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:20:16,120 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:20:16,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:20:16,121 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:20:16,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:20:16,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:20:16,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:20:16,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:20:16,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:20:16,348 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:20:16,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2022-01-19 07:20:16,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a19336a/a0723c71a4d94314950de416b8e14277/FLAGaa8af06ee [2022-01-19 07:20:16,730 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:20:16,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2022-01-19 07:20:16,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a19336a/a0723c71a4d94314950de416b8e14277/FLAGaa8af06ee [2022-01-19 07:20:17,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a19336a/a0723c71a4d94314950de416b8e14277 [2022-01-19 07:20:17,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:20:17,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:20:17,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:20:17,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:20:17,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:20:17,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3be81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17, skipping insertion in model container [2022-01-19 07:20:17,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:20:17,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:20:17,377 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-trans.wvr.c[3292,3305] [2022-01-19 07:20:17,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:20:17,391 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:20:17,413 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-trans.wvr.c[3292,3305] [2022-01-19 07:20:17,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:20:17,432 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:20:17,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17 WrapperNode [2022-01-19 07:20:17,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:20:17,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:20:17,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:20:17,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:20:17,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,482 INFO L137 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 172 [2022-01-19 07:20:17,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:20:17,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:20:17,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:20:17,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:20:17,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:20:17,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:20:17,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:20:17,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:20:17,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (1/1) ... [2022-01-19 07:20:17,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:20:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:20:17,548 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 07:20:17,557 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 07:20:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:20:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:20:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:20:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:20:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:20:17,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:20:17,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:20:17,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:20:17,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 07:20:17,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 07:20:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:20:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 07:20:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:20:17,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:20:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:20:17,582 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 07:20:17,694 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:20:17,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:20:17,994 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:20:18,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:20:18,003 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-19 07:20:18,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:20:18 BoogieIcfgContainer [2022-01-19 07:20:18,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:20:18,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:20:18,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:20:18,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:20:18,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:20:17" (1/3) ... [2022-01-19 07:20:18,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc2e3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:20:18, skipping insertion in model container [2022-01-19 07:20:18,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:17" (2/3) ... [2022-01-19 07:20:18,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc2e3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:20:18, skipping insertion in model container [2022-01-19 07:20:18,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:20:18" (3/3) ... [2022-01-19 07:20:18,011 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-01-19 07:20:18,016 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:20:18,016 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:20:18,016 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:20:18,059 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,059 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,060 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,060 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,060 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,061 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,061 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,061 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,061 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,062 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,062 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,062 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,062 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,062 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,062 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,063 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,063 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,063 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,063 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,063 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,064 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,064 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,064 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,064 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,064 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,065 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,067 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,067 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,067 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,067 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,067 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,067 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,068 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,068 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,068 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,069 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,070 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,070 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,070 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,070 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,070 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,070 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,071 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,071 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,071 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,071 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,072 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,074 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,075 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,075 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,075 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,075 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,075 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,076 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,077 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,081 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,081 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,082 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,082 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,082 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,082 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,083 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,083 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,083 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,083 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,084 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,084 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,085 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,085 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,085 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,085 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,087 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,087 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,087 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,087 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,087 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,087 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,090 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,090 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,091 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,091 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,091 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,091 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,092 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,092 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,095 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,096 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,096 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,096 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,096 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,097 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,097 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,097 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,097 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,098 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,098 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,098 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,098 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,098 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,098 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,099 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,099 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,099 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,099 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,099 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,100 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,100 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,100 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,100 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,100 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,100 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,101 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,101 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,101 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,101 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,101 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,101 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,102 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,102 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,102 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,102 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,102 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,102 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,102 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,102 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,103 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,103 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,103 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,103 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,103 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,103 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,103 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,103 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,104 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,104 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,104 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,104 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,104 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,104 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,104 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,105 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,105 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,105 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,106 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,106 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,106 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,106 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,106 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,106 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,108 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,108 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,108 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,108 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,108 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,108 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,108 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,108 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,109 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,109 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,109 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,109 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,109 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,109 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,109 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,112 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,113 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,116 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,116 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,117 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,118 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,118 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:18,122 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 07:20:18,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:20:18,168 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 07:20:18,168 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 07:20:18,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 308 places, 332 transitions, 688 flow [2022-01-19 07:20:18,295 INFO L129 PetriNetUnfolder]: 34/329 cut-off events. [2022-01-19 07:20:18,295 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:20:18,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 329 events. 34/329 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 506 event pairs, 0 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-01-19 07:20:18,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 332 transitions, 688 flow [2022-01-19 07:20:18,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 318 transitions, 654 flow [2022-01-19 07:20:18,360 INFO L129 PetriNetUnfolder]: 34/317 cut-off events. [2022-01-19 07:20:18,360 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:20:18,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:18,361 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] [2022-01-19 07:20:18,361 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 07:20:18,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1152647938, now seen corresponding path program 1 times [2022-01-19 07:20:18,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:18,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763245170] [2022-01-19 07:20:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:18,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:18,651 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 07:20:18,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:18,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763245170] [2022-01-19 07:20:18,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763245170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:18,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:18,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 07:20:18,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521905405] [2022-01-19 07:20:18,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:18,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 07:20:18,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 07:20:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 07:20:18,689 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 332 [2022-01-19 07:20:18,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 318 transitions, 654 flow. Second operand has 2 states, 2 states have (on average 316.5) internal successors, (633), 2 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:18,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:18,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 332 [2022-01-19 07:20:18,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:18,761 INFO L129 PetriNetUnfolder]: 21/305 cut-off events. [2022-01-19 07:20:18,761 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-01-19 07:20:18,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 305 events. 21/305 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 505 event pairs, 0 based on Foata normal form. 19/296 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-01-19 07:20:18,766 INFO L132 encePairwiseOnDemand]: 319/332 looper letters, 6 selfloop transitions, 0 changer transitions 7/305 dead transitions. [2022-01-19 07:20:18,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 305 transitions, 640 flow [2022-01-19 07:20:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 07:20:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 07:20:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 643 transitions. [2022-01-19 07:20:18,781 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9683734939759037 [2022-01-19 07:20:18,781 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 643 transitions. [2022-01-19 07:20:18,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 643 transitions. [2022-01-19 07:20:18,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:18,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 643 transitions. [2022-01-19 07:20:18,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 321.5) internal successors, (643), 2 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:18,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:18,799 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:18,800 INFO L186 Difference]: Start difference. First operand has 294 places, 318 transitions, 654 flow. Second operand 2 states and 643 transitions. [2022-01-19 07:20:18,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 305 transitions, 640 flow [2022-01-19 07:20:18,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 305 transitions, 628 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 07:20:18,817 INFO L242 Difference]: Finished difference. Result has 289 places, 298 transitions, 602 flow [2022-01-19 07:20:18,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=602, PETRI_PLACES=289, PETRI_TRANSITIONS=298} [2022-01-19 07:20:18,823 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, -5 predicate places. [2022-01-19 07:20:18,824 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 298 transitions, 602 flow [2022-01-19 07:20:18,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 316.5) internal successors, (633), 2 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:18,825 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:18,825 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] [2022-01-19 07:20:18,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:20:18,826 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 07:20:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:18,826 INFO L85 PathProgramCache]: Analyzing trace with hash 694363901, now seen corresponding path program 1 times [2022-01-19 07:20:18,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:18,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944991591] [2022-01-19 07:20:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:18,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:19,000 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 07:20:19,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:19,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944991591] [2022-01-19 07:20:19,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944991591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:19,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:19,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:20:19,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153675170] [2022-01-19 07:20:19,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:19,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:20:19,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:19,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:20:19,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:20:19,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-01-19 07:20:19,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 298 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:19,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-01-19 07:20:19,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:19,096 INFO L129 PetriNetUnfolder]: 40/413 cut-off events. [2022-01-19 07:20:19,097 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-01-19 07:20:19,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 413 events. 40/413 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1188 event pairs, 6 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 460. Up to 22 conditions per place. [2022-01-19 07:20:19,102 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 14 selfloop transitions, 2 changer transitions 0/304 dead transitions. [2022-01-19 07:20:19,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 304 transitions, 651 flow [2022-01-19 07:20:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:20:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:20:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2022-01-19 07:20:19,105 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9447791164658634 [2022-01-19 07:20:19,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2022-01-19 07:20:19,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2022-01-19 07:20:19,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:19,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2022-01-19 07:20:19,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,113 INFO L186 Difference]: Start difference. First operand has 289 places, 298 transitions, 602 flow. Second operand 3 states and 941 transitions. [2022-01-19 07:20:19,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 304 transitions, 651 flow [2022-01-19 07:20:19,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 304 transitions, 651 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:20:19,122 INFO L242 Difference]: Finished difference. Result has 285 places, 298 transitions, 610 flow [2022-01-19 07:20:19,122 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=285, PETRI_TRANSITIONS=298} [2022-01-19 07:20:19,123 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, -9 predicate places. [2022-01-19 07:20:19,124 INFO L470 AbstractCegarLoop]: Abstraction has has 285 places, 298 transitions, 610 flow [2022-01-19 07:20:19,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,125 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:19,125 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] [2022-01-19 07:20:19,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:20:19,125 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 07:20:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:19,127 INFO L85 PathProgramCache]: Analyzing trace with hash -391066335, now seen corresponding path program 1 times [2022-01-19 07:20:19,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:19,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492168396] [2022-01-19 07:20:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:19,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:19,278 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 07:20:19,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:19,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492168396] [2022-01-19 07:20:19,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492168396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:19,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:19,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:20:19,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628809460] [2022-01-19 07:20:19,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:19,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:20:19,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:20:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:20:19,285 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-01-19 07:20:19,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 298 transitions, 610 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:19,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-01-19 07:20:19,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:19,390 INFO L129 PetriNetUnfolder]: 49/489 cut-off events. [2022-01-19 07:20:19,390 INFO L130 PetriNetUnfolder]: For 21/25 co-relation queries the response was YES. [2022-01-19 07:20:19,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 489 events. 49/489 cut-off events. For 21/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1590 event pairs, 9 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 549. Up to 31 conditions per place. [2022-01-19 07:20:19,396 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 13 selfloop transitions, 2 changer transitions 0/303 dead transitions. [2022-01-19 07:20:19,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 303 transitions, 654 flow [2022-01-19 07:20:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:20:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:20:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 940 transitions. [2022-01-19 07:20:19,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9437751004016064 [2022-01-19 07:20:19,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 940 transitions. [2022-01-19 07:20:19,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 940 transitions. [2022-01-19 07:20:19,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:19,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 940 transitions. [2022-01-19 07:20:19,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,454 INFO L186 Difference]: Start difference. First operand has 285 places, 298 transitions, 610 flow. Second operand 3 states and 940 transitions. [2022-01-19 07:20:19,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 303 transitions, 654 flow [2022-01-19 07:20:19,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 303 transitions, 650 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:20:19,462 INFO L242 Difference]: Finished difference. Result has 286 places, 298 transitions, 614 flow [2022-01-19 07:20:19,462 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=614, PETRI_PLACES=286, PETRI_TRANSITIONS=298} [2022-01-19 07:20:19,464 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, -8 predicate places. [2022-01-19 07:20:19,464 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 298 transitions, 614 flow [2022-01-19 07:20:19,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,465 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:19,465 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] [2022-01-19 07:20:19,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:20:19,466 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 07:20:19,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash -453812997, now seen corresponding path program 1 times [2022-01-19 07:20:19,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:19,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816268107] [2022-01-19 07:20:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:19,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:19,620 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 07:20:19,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:19,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816268107] [2022-01-19 07:20:19,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816268107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:19,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:19,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:20:19,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65678422] [2022-01-19 07:20:19,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:19,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:20:19,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:19,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:20:19,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:20:19,627 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-01-19 07:20:19,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 298 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:19,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-01-19 07:20:19,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:19,715 INFO L129 PetriNetUnfolder]: 54/498 cut-off events. [2022-01-19 07:20:19,715 INFO L130 PetriNetUnfolder]: For 45/57 co-relation queries the response was YES. [2022-01-19 07:20:19,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 498 events. 54/498 cut-off events. For 45/57 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1762 event pairs, 14 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 589. Up to 53 conditions per place. [2022-01-19 07:20:19,720 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 12 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2022-01-19 07:20:19,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 302 transitions, 653 flow [2022-01-19 07:20:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:20:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:20:19,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 939 transitions. [2022-01-19 07:20:19,723 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9427710843373494 [2022-01-19 07:20:19,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 939 transitions. [2022-01-19 07:20:19,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 939 transitions. [2022-01-19 07:20:19,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:19,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 939 transitions. [2022-01-19 07:20:19,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,728 INFO L186 Difference]: Start difference. First operand has 286 places, 298 transitions, 614 flow. Second operand 3 states and 939 transitions. [2022-01-19 07:20:19,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 302 transitions, 653 flow [2022-01-19 07:20:19,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 302 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:20:19,734 INFO L242 Difference]: Finished difference. Result has 287 places, 298 transitions, 618 flow [2022-01-19 07:20:19,734 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=287, PETRI_TRANSITIONS=298} [2022-01-19 07:20:19,736 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, -7 predicate places. [2022-01-19 07:20:19,736 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 298 transitions, 618 flow [2022-01-19 07:20:19,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,737 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:19,737 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] [2022-01-19 07:20:19,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 07:20:19,737 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 07:20:19,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1308435147, now seen corresponding path program 1 times [2022-01-19 07:20:19,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:19,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178272107] [2022-01-19 07:20:19,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:19,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:19,937 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 07:20:19,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:19,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178272107] [2022-01-19 07:20:19,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178272107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:19,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:19,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:20:19,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201068665] [2022-01-19 07:20:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:19,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:20:19,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:20:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:20:19,942 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 332 [2022-01-19 07:20:19,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 298 transitions, 618 flow. Second operand has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:19,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:19,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 332 [2022-01-19 07:20:19,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:20,743 INFO L129 PetriNetUnfolder]: 1398/5083 cut-off events. [2022-01-19 07:20:20,744 INFO L130 PetriNetUnfolder]: For 372/372 co-relation queries the response was YES. [2022-01-19 07:20:20,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7456 conditions, 5083 events. 1398/5083 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 47559 event pairs, 539 based on Foata normal form. 8/4452 useless extension candidates. Maximal degree in co-relation 7449. Up to 1226 conditions per place. [2022-01-19 07:20:20,773 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 89 selfloop transitions, 2 changer transitions 8/336 dead transitions. [2022-01-19 07:20:20,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 336 transitions, 904 flow [2022-01-19 07:20:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:20:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:20:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1850 transitions. [2022-01-19 07:20:20,776 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7960413080895009 [2022-01-19 07:20:20,776 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1850 transitions. [2022-01-19 07:20:20,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1850 transitions. [2022-01-19 07:20:20,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:20,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1850 transitions. [2022-01-19 07:20:20,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.2857142857143) internal successors, (1850), 7 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:20,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:20,783 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:20,783 INFO L186 Difference]: Start difference. First operand has 287 places, 298 transitions, 618 flow. Second operand 7 states and 1850 transitions. [2022-01-19 07:20:20,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 336 transitions, 904 flow [2022-01-19 07:20:20,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 336 transitions, 900 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:20:20,788 INFO L242 Difference]: Finished difference. Result has 296 places, 299 transitions, 633 flow [2022-01-19 07:20:20,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=633, PETRI_PLACES=296, PETRI_TRANSITIONS=299} [2022-01-19 07:20:20,790 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 2 predicate places. [2022-01-19 07:20:20,790 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 299 transitions, 633 flow [2022-01-19 07:20:20,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:20,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:20,791 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] [2022-01-19 07:20:20,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 07:20:20,792 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 07:20:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1507448843, now seen corresponding path program 2 times [2022-01-19 07:20:20,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:20,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185669907] [2022-01-19 07:20:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:20,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:21,140 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 07:20:21,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:21,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185669907] [2022-01-19 07:20:21,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185669907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:21,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:21,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-19 07:20:21,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455803709] [2022-01-19 07:20:21,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:21,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-19 07:20:21,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:21,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-19 07:20:21,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-01-19 07:20:21,145 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 332 [2022-01-19 07:20:21,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 299 transitions, 633 flow. Second operand has 17 states, 17 states have (on average 231.88235294117646) internal successors, (3942), 17 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:21,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:21,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 332 [2022-01-19 07:20:21,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:22,514 INFO L129 PetriNetUnfolder]: 1440/6220 cut-off events. [2022-01-19 07:20:22,514 INFO L130 PetriNetUnfolder]: For 1409/1466 co-relation queries the response was YES. [2022-01-19 07:20:22,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 6220 events. 1440/6220 cut-off events. For 1409/1466 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 62363 event pairs, 403 based on Foata normal form. 41/5503 useless extension candidates. Maximal degree in co-relation 9799. Up to 940 conditions per place. [2022-01-19 07:20:22,552 INFO L132 encePairwiseOnDemand]: 307/332 looper letters, 145 selfloop transitions, 29 changer transitions 4/393 dead transitions. [2022-01-19 07:20:22,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 393 transitions, 1225 flow [2022-01-19 07:20:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 07:20:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 07:20:22,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5421 transitions. [2022-01-19 07:20:22,561 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7099266631744369 [2022-01-19 07:20:22,561 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5421 transitions. [2022-01-19 07:20:22,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5421 transitions. [2022-01-19 07:20:22,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:22,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5421 transitions. [2022-01-19 07:20:22,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 235.69565217391303) internal successors, (5421), 23 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:22,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 332.0) internal successors, (7968), 24 states have internal predecessors, (7968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:22,581 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 332.0) internal successors, (7968), 24 states have internal predecessors, (7968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:22,581 INFO L186 Difference]: Start difference. First operand has 296 places, 299 transitions, 633 flow. Second operand 23 states and 5421 transitions. [2022-01-19 07:20:22,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 393 transitions, 1225 flow [2022-01-19 07:20:22,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 393 transitions, 1205 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-01-19 07:20:22,595 INFO L242 Difference]: Finished difference. Result has 323 places, 317 transitions, 788 flow [2022-01-19 07:20:22,595 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=788, PETRI_PLACES=323, PETRI_TRANSITIONS=317} [2022-01-19 07:20:22,595 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 29 predicate places. [2022-01-19 07:20:22,595 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 317 transitions, 788 flow [2022-01-19 07:20:22,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 231.88235294117646) internal successors, (3942), 17 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:22,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:22,597 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] [2022-01-19 07:20:22,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 07:20:22,597 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 07:20:22,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash -832404211, now seen corresponding path program 1 times [2022-01-19 07:20:22,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:22,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028068768] [2022-01-19 07:20:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:22,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:22,639 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 07:20:22,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:22,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028068768] [2022-01-19 07:20:22,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028068768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:22,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:22,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:22,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979354857] [2022-01-19 07:20:22,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:22,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:22,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:22,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:22,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:22,642 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:20:22,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 317 transitions, 788 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:22,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:22,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:20:22,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:23,804 INFO L129 PetriNetUnfolder]: 1728/9883 cut-off events. [2022-01-19 07:20:23,805 INFO L130 PetriNetUnfolder]: For 860/984 co-relation queries the response was YES. [2022-01-19 07:20:23,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13150 conditions, 9883 events. 1728/9883 cut-off events. For 860/984 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 119282 event pairs, 484 based on Foata normal form. 4/8388 useless extension candidates. Maximal degree in co-relation 13129. Up to 976 conditions per place. [2022-01-19 07:20:23,855 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 50 selfloop transitions, 12 changer transitions 0/355 dead transitions. [2022-01-19 07:20:23,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 355 transitions, 1000 flow [2022-01-19 07:20:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:20:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:20:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2022-01-19 07:20:23,858 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9240963855421687 [2022-01-19 07:20:23,858 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2022-01-19 07:20:23,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2022-01-19 07:20:23,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:23,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2022-01-19 07:20:23,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:23,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:23,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:23,863 INFO L186 Difference]: Start difference. First operand has 323 places, 317 transitions, 788 flow. Second operand 5 states and 1534 transitions. [2022-01-19 07:20:23,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 355 transitions, 1000 flow [2022-01-19 07:20:23,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 355 transitions, 986 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-01-19 07:20:23,871 INFO L242 Difference]: Finished difference. Result has 322 places, 329 transitions, 862 flow [2022-01-19 07:20:23,871 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=322, PETRI_TRANSITIONS=329} [2022-01-19 07:20:23,872 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 28 predicate places. [2022-01-19 07:20:23,872 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 329 transitions, 862 flow [2022-01-19 07:20:23,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:23,872 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:23,873 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] [2022-01-19 07:20:23,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 07:20:23,873 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 07:20:23,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:23,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1996925835, now seen corresponding path program 2 times [2022-01-19 07:20:23,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:23,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768188739] [2022-01-19 07:20:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:23,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:23,903 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 07:20:23,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:23,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768188739] [2022-01-19 07:20:23,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768188739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:23,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:23,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:23,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136487781] [2022-01-19 07:20:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:23,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:23,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:23,905 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:20:23,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 329 transitions, 862 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:23,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:23,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:20:23,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:25,321 INFO L129 PetriNetUnfolder]: 1828/12107 cut-off events. [2022-01-19 07:20:25,321 INFO L130 PetriNetUnfolder]: For 2408/2476 co-relation queries the response was YES. [2022-01-19 07:20:25,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16988 conditions, 12107 events. 1828/12107 cut-off events. For 2408/2476 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 152500 event pairs, 660 based on Foata normal form. 34/11250 useless extension candidates. Maximal degree in co-relation 16966. Up to 1389 conditions per place. [2022-01-19 07:20:25,391 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 64 selfloop transitions, 12 changer transitions 0/369 dead transitions. [2022-01-19 07:20:25,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 369 transitions, 1166 flow [2022-01-19 07:20:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:20:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:20:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2022-01-19 07:20:25,394 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9240963855421687 [2022-01-19 07:20:25,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2022-01-19 07:20:25,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2022-01-19 07:20:25,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:25,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2022-01-19 07:20:25,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:25,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:25,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:25,399 INFO L186 Difference]: Start difference. First operand has 322 places, 329 transitions, 862 flow. Second operand 5 states and 1534 transitions. [2022-01-19 07:20:25,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 369 transitions, 1166 flow [2022-01-19 07:20:25,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 369 transitions, 1166 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:20:25,409 INFO L242 Difference]: Finished difference. Result has 329 places, 341 transitions, 996 flow [2022-01-19 07:20:25,409 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=996, PETRI_PLACES=329, PETRI_TRANSITIONS=341} [2022-01-19 07:20:25,410 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 35 predicate places. [2022-01-19 07:20:25,410 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 341 transitions, 996 flow [2022-01-19 07:20:25,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:25,410 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:25,410 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] [2022-01-19 07:20:25,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 07:20:25,410 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 07:20:25,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:25,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1087342295, now seen corresponding path program 1 times [2022-01-19 07:20:25,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:25,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538336737] [2022-01-19 07:20:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:25,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:25,556 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 07:20:25,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:25,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538336737] [2022-01-19 07:20:25,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538336737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:25,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:25,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 07:20:25,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958299781] [2022-01-19 07:20:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:25,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:20:25,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:25,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:20:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:20:25,559 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-01-19 07:20:25,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 341 transitions, 996 flow. Second operand has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:25,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:25,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-01-19 07:20:25,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:28,077 INFO L129 PetriNetUnfolder]: 4857/18610 cut-off events. [2022-01-19 07:20:28,078 INFO L130 PetriNetUnfolder]: For 8359/8955 co-relation queries the response was YES. [2022-01-19 07:20:28,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32604 conditions, 18610 events. 4857/18610 cut-off events. For 8359/8955 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 240631 event pairs, 1887 based on Foata normal form. 44/17487 useless extension candidates. Maximal degree in co-relation 32578. Up to 5916 conditions per place. [2022-01-19 07:20:28,173 INFO L132 encePairwiseOnDemand]: 318/332 looper letters, 69 selfloop transitions, 28 changer transitions 6/387 dead transitions. [2022-01-19 07:20:28,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 387 transitions, 1405 flow [2022-01-19 07:20:28,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:20:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:20:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1915 transitions. [2022-01-19 07:20:28,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8240103270223752 [2022-01-19 07:20:28,176 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1915 transitions. [2022-01-19 07:20:28,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1915 transitions. [2022-01-19 07:20:28,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:28,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1915 transitions. [2022-01-19 07:20:28,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.57142857142856) internal successors, (1915), 7 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:28,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:28,182 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:28,182 INFO L186 Difference]: Start difference. First operand has 329 places, 341 transitions, 996 flow. Second operand 7 states and 1915 transitions. [2022-01-19 07:20:28,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 387 transitions, 1405 flow [2022-01-19 07:20:28,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 387 transitions, 1401 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-01-19 07:20:28,200 INFO L242 Difference]: Finished difference. Result has 340 places, 366 transitions, 1261 flow [2022-01-19 07:20:28,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1261, PETRI_PLACES=340, PETRI_TRANSITIONS=366} [2022-01-19 07:20:28,201 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 46 predicate places. [2022-01-19 07:20:28,201 INFO L470 AbstractCegarLoop]: Abstraction has has 340 places, 366 transitions, 1261 flow [2022-01-19 07:20:28,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:28,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:28,201 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] [2022-01-19 07:20:28,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 07:20:28,202 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 07:20:28,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash -901944175, now seen corresponding path program 2 times [2022-01-19 07:20:28,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:28,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551426394] [2022-01-19 07:20:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:28,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:28,269 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 07:20:28,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:28,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551426394] [2022-01-19 07:20:28,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551426394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:28,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:28,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:20:28,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239168040] [2022-01-19 07:20:28,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:28,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:20:28,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:28,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:20:28,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:20:28,275 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-01-19 07:20:28,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 366 transitions, 1261 flow. Second operand has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:28,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:28,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-01-19 07:20:28,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:31,054 INFO L129 PetriNetUnfolder]: 4858/18580 cut-off events. [2022-01-19 07:20:31,054 INFO L130 PetriNetUnfolder]: For 20783/24809 co-relation queries the response was YES. [2022-01-19 07:20:31,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41473 conditions, 18580 events. 4858/18580 cut-off events. For 20783/24809 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 240490 event pairs, 1784 based on Foata normal form. 450/17891 useless extension candidates. Maximal degree in co-relation 41441. Up to 4807 conditions per place. [2022-01-19 07:20:31,188 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 93 selfloop transitions, 6 changer transitions 26/409 dead transitions. [2022-01-19 07:20:31,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 409 transitions, 1844 flow [2022-01-19 07:20:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 07:20:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 07:20:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2176 transitions. [2022-01-19 07:20:31,192 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2022-01-19 07:20:31,192 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2176 transitions. [2022-01-19 07:20:31,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2176 transitions. [2022-01-19 07:20:31,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:31,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2176 transitions. [2022-01-19 07:20:31,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:31,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:31,199 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:31,199 INFO L186 Difference]: Start difference. First operand has 340 places, 366 transitions, 1261 flow. Second operand 8 states and 2176 transitions. [2022-01-19 07:20:31,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 409 transitions, 1844 flow [2022-01-19 07:20:31,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 409 transitions, 1838 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 07:20:31,241 INFO L242 Difference]: Finished difference. Result has 346 places, 364 transitions, 1258 flow [2022-01-19 07:20:31,255 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1258, PETRI_PLACES=346, PETRI_TRANSITIONS=364} [2022-01-19 07:20:31,256 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 52 predicate places. [2022-01-19 07:20:31,256 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 364 transitions, 1258 flow [2022-01-19 07:20:31,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:31,257 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:31,257 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] [2022-01-19 07:20:31,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 07:20:31,257 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 07:20:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1470030149, now seen corresponding path program 1 times [2022-01-19 07:20:31,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:31,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094982774] [2022-01-19 07:20:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:31,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:31,333 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 07:20:31,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:31,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094982774] [2022-01-19 07:20:31,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094982774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:31,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:31,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:31,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96974615] [2022-01-19 07:20:31,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:31,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:31,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:31,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:31,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:31,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:20:31,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 364 transitions, 1258 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:31,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:31,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:20:31,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:33,587 INFO L129 PetriNetUnfolder]: 3141/19700 cut-off events. [2022-01-19 07:20:33,587 INFO L130 PetriNetUnfolder]: For 13565/14937 co-relation queries the response was YES. [2022-01-19 07:20:33,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36293 conditions, 19700 events. 3141/19700 cut-off events. For 13565/14937 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 279230 event pairs, 1342 based on Foata normal form. 16/18167 useless extension candidates. Maximal degree in co-relation 36259. Up to 2389 conditions per place. [2022-01-19 07:20:33,698 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 65 selfloop transitions, 6 changer transitions 3/390 dead transitions. [2022-01-19 07:20:33,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 390 transitions, 1528 flow [2022-01-19 07:20:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:20:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:20:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1220 transitions. [2022-01-19 07:20:33,713 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9186746987951807 [2022-01-19 07:20:33,713 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1220 transitions. [2022-01-19 07:20:33,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1220 transitions. [2022-01-19 07:20:33,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:33,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1220 transitions. [2022-01-19 07:20:33,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 07:20:33,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:33,730 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:33,730 INFO L186 Difference]: Start difference. First operand has 346 places, 364 transitions, 1258 flow. Second operand 4 states and 1220 transitions. [2022-01-19 07:20:33,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 390 transitions, 1528 flow [2022-01-19 07:20:33,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 390 transitions, 1519 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-01-19 07:20:33,903 INFO L242 Difference]: Finished difference. Result has 345 places, 366 transitions, 1290 flow [2022-01-19 07:20:33,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1290, PETRI_PLACES=345, PETRI_TRANSITIONS=366} [2022-01-19 07:20:33,904 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 51 predicate places. [2022-01-19 07:20:33,904 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 366 transitions, 1290 flow [2022-01-19 07:20:33,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:33,904 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:33,905 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] [2022-01-19 07:20:33,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 07:20:33,905 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 07:20:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:33,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1696890719, now seen corresponding path program 1 times [2022-01-19 07:20:33,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:33,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340590029] [2022-01-19 07:20:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:33,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:34,051 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 07:20:34,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:34,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340590029] [2022-01-19 07:20:34,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340590029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:34,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:34,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:20:34,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698492380] [2022-01-19 07:20:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:34,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:20:34,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:20:34,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:20:34,054 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-01-19 07:20:34,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 366 transitions, 1290 flow. Second operand has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:34,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:34,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-01-19 07:20:34,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:37,954 INFO L129 PetriNetUnfolder]: 5864/22978 cut-off events. [2022-01-19 07:20:37,954 INFO L130 PetriNetUnfolder]: For 28051/31928 co-relation queries the response was YES. [2022-01-19 07:20:38,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50977 conditions, 22978 events. 5864/22978 cut-off events. For 28051/31928 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 315000 event pairs, 2891 based on Foata normal form. 459/22007 useless extension candidates. Maximal degree in co-relation 50943. Up to 7734 conditions per place. [2022-01-19 07:20:38,090 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 130 selfloop transitions, 7 changer transitions 31/456 dead transitions. [2022-01-19 07:20:38,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 456 transitions, 2344 flow [2022-01-19 07:20:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 07:20:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 07:20:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2177 transitions. [2022-01-19 07:20:38,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8196536144578314 [2022-01-19 07:20:38,116 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2177 transitions. [2022-01-19 07:20:38,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2177 transitions. [2022-01-19 07:20:38,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:38,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2177 transitions. [2022-01-19 07:20:38,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.125) internal successors, (2177), 8 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:38,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:38,123 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:38,123 INFO L186 Difference]: Start difference. First operand has 345 places, 366 transitions, 1290 flow. Second operand 8 states and 2177 transitions. [2022-01-19 07:20:38,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 456 transitions, 2344 flow [2022-01-19 07:20:38,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 456 transitions, 2340 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:20:38,283 INFO L242 Difference]: Finished difference. Result has 356 places, 370 transitions, 1342 flow [2022-01-19 07:20:38,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1342, PETRI_PLACES=356, PETRI_TRANSITIONS=370} [2022-01-19 07:20:38,284 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 62 predicate places. [2022-01-19 07:20:38,284 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 370 transitions, 1342 flow [2022-01-19 07:20:38,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:38,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:38,285 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] [2022-01-19 07:20:38,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 07:20:38,285 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 07:20:38,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1989539289, now seen corresponding path program 2 times [2022-01-19 07:20:38,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:38,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593708688] [2022-01-19 07:20:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:38,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:38,335 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 07:20:38,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:38,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593708688] [2022-01-19 07:20:38,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593708688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:38,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:38,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:38,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98493949] [2022-01-19 07:20:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:38,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:38,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:38,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:20:38,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 370 transitions, 1342 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:38,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:38,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:20:38,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:41,244 INFO L129 PetriNetUnfolder]: 3297/22054 cut-off events. [2022-01-19 07:20:41,244 INFO L130 PetriNetUnfolder]: For 17373/19525 co-relation queries the response was YES. [2022-01-19 07:20:41,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42508 conditions, 22054 events. 3297/22054 cut-off events. For 17373/19525 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 323425 event pairs, 1570 based on Foata normal form. 188/20579 useless extension candidates. Maximal degree in co-relation 42469. Up to 2687 conditions per place. [2022-01-19 07:20:41,580 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 50 selfloop transitions, 6 changer transitions 11/387 dead transitions. [2022-01-19 07:20:41,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 387 transitions, 1554 flow [2022-01-19 07:20:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:20:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:20:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1220 transitions. [2022-01-19 07:20:41,585 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9186746987951807 [2022-01-19 07:20:41,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1220 transitions. [2022-01-19 07:20:41,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1220 transitions. [2022-01-19 07:20:41,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:41,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1220 transitions. [2022-01-19 07:20:41,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 07:20:41,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:41,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:41,592 INFO L186 Difference]: Start difference. First operand has 356 places, 370 transitions, 1342 flow. Second operand 4 states and 1220 transitions. [2022-01-19 07:20:41,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 387 transitions, 1554 flow [2022-01-19 07:20:41,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 387 transitions, 1545 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-01-19 07:20:41,873 INFO L242 Difference]: Finished difference. Result has 355 places, 366 transitions, 1329 flow [2022-01-19 07:20:41,874 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1329, PETRI_PLACES=355, PETRI_TRANSITIONS=366} [2022-01-19 07:20:41,874 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 61 predicate places. [2022-01-19 07:20:41,875 INFO L470 AbstractCegarLoop]: Abstraction has has 355 places, 366 transitions, 1329 flow [2022-01-19 07:20:41,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:41,875 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:41,875 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] [2022-01-19 07:20:41,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 07:20:41,875 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 07:20:41,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:41,876 INFO L85 PathProgramCache]: Analyzing trace with hash 577724799, now seen corresponding path program 3 times [2022-01-19 07:20:41,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:41,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819936064] [2022-01-19 07:20:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:41,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:41,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:41,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819936064] [2022-01-19 07:20:41,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819936064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:41,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:41,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:41,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768810718] [2022-01-19 07:20:41,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:41,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:41,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:41,916 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:20:41,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 366 transitions, 1329 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:41,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:41,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:20:41,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:44,682 INFO L129 PetriNetUnfolder]: 3293/22177 cut-off events. [2022-01-19 07:20:44,683 INFO L130 PetriNetUnfolder]: For 17222/19238 co-relation queries the response was YES. [2022-01-19 07:20:44,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41077 conditions, 22177 events. 3293/22177 cut-off events. For 17222/19238 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 320893 event pairs, 1147 based on Foata normal form. 180/20749 useless extension candidates. Maximal degree in co-relation 41038. Up to 2161 conditions per place. [2022-01-19 07:20:44,823 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 46 selfloop transitions, 10 changer transitions 3/379 dead transitions. [2022-01-19 07:20:44,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 379 transitions, 1501 flow [2022-01-19 07:20:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:20:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:20:44,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1218 transitions. [2022-01-19 07:20:44,825 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9171686746987951 [2022-01-19 07:20:44,825 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1218 transitions. [2022-01-19 07:20:44,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1218 transitions. [2022-01-19 07:20:44,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:44,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1218 transitions. [2022-01-19 07:20:44,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:44,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:44,829 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:44,829 INFO L186 Difference]: Start difference. First operand has 355 places, 366 transitions, 1329 flow. Second operand 4 states and 1218 transitions. [2022-01-19 07:20:44,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 379 transitions, 1501 flow [2022-01-19 07:20:45,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 379 transitions, 1489 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 07:20:45,005 INFO L242 Difference]: Finished difference. Result has 357 places, 365 transitions, 1336 flow [2022-01-19 07:20:45,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1336, PETRI_PLACES=357, PETRI_TRANSITIONS=365} [2022-01-19 07:20:45,006 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 63 predicate places. [2022-01-19 07:20:45,006 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 365 transitions, 1336 flow [2022-01-19 07:20:45,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:45,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:45,006 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] [2022-01-19 07:20:45,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 07:20:45,007 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 07:20:45,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:45,007 INFO L85 PathProgramCache]: Analyzing trace with hash -96806065, now seen corresponding path program 1 times [2022-01-19 07:20:45,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:45,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147150616] [2022-01-19 07:20:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:45,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:45,040 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 07:20:45,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:45,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147150616] [2022-01-19 07:20:45,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147150616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:45,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:45,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:45,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332661434] [2022-01-19 07:20:45,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:45,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:45,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:45,042 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:20:45,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 365 transitions, 1336 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:45,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:45,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:20:45,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:48,642 INFO L129 PetriNetUnfolder]: 3285/21541 cut-off events. [2022-01-19 07:20:48,643 INFO L130 PetriNetUnfolder]: For 22840/25387 co-relation queries the response was YES. [2022-01-19 07:20:48,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43436 conditions, 21541 events. 3285/21541 cut-off events. For 22840/25387 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 315141 event pairs, 906 based on Foata normal form. 276/20383 useless extension candidates. Maximal degree in co-relation 43397. Up to 2693 conditions per place. [2022-01-19 07:20:48,765 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 65 selfloop transitions, 14 changer transitions 9/408 dead transitions. [2022-01-19 07:20:48,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 408 transitions, 1771 flow [2022-01-19 07:20:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:20:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:20:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1533 transitions. [2022-01-19 07:20:48,769 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9234939759036145 [2022-01-19 07:20:48,769 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1533 transitions. [2022-01-19 07:20:48,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1533 transitions. [2022-01-19 07:20:48,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:48,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1533 transitions. [2022-01-19 07:20:48,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.6) internal successors, (1533), 5 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:48,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:48,773 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:48,773 INFO L186 Difference]: Start difference. First operand has 357 places, 365 transitions, 1336 flow. Second operand 5 states and 1533 transitions. [2022-01-19 07:20:48,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 408 transitions, 1771 flow [2022-01-19 07:20:48,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 408 transitions, 1751 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 07:20:48,977 INFO L242 Difference]: Finished difference. Result has 362 places, 370 transitions, 1419 flow [2022-01-19 07:20:48,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1419, PETRI_PLACES=362, PETRI_TRANSITIONS=370} [2022-01-19 07:20:48,978 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 68 predicate places. [2022-01-19 07:20:48,978 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 370 transitions, 1419 flow [2022-01-19 07:20:48,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:48,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:48,979 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] [2022-01-19 07:20:48,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 07:20:48,979 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 07:20:48,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:48,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1152912389, now seen corresponding path program 1 times [2022-01-19 07:20:48,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:48,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567109433] [2022-01-19 07:20:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:48,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:49,038 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 07:20:49,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567109433] [2022-01-19 07:20:49,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567109433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:49,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:49,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:20:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691450382] [2022-01-19 07:20:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:49,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:20:49,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:20:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:20:49,040 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-01-19 07:20:49,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 370 transitions, 1419 flow. Second operand has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:49,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:49,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-01-19 07:20:49,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:52,091 INFO L129 PetriNetUnfolder]: 5105/21837 cut-off events. [2022-01-19 07:20:52,091 INFO L130 PetriNetUnfolder]: For 33726/39330 co-relation queries the response was YES. [2022-01-19 07:20:52,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51494 conditions, 21837 events. 5105/21837 cut-off events. For 33726/39330 co-relation queries the response was YES. Maximal size of possible extension queue 1105. Compared 303186 event pairs, 2307 based on Foata normal form. 1024/21697 useless extension candidates. Maximal degree in co-relation 51454. Up to 6780 conditions per place. [2022-01-19 07:20:52,214 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 118 selfloop transitions, 10 changer transitions 20/437 dead transitions. [2022-01-19 07:20:52,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 437 transitions, 2140 flow [2022-01-19 07:20:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 07:20:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 07:20:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2178 transitions. [2022-01-19 07:20:52,217 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8200301204819277 [2022-01-19 07:20:52,218 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2178 transitions. [2022-01-19 07:20:52,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2178 transitions. [2022-01-19 07:20:52,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:52,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2178 transitions. [2022-01-19 07:20:52,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.25) internal successors, (2178), 8 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:52,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:52,223 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:52,223 INFO L186 Difference]: Start difference. First operand has 362 places, 370 transitions, 1419 flow. Second operand 8 states and 2178 transitions. [2022-01-19 07:20:52,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 437 transitions, 2140 flow [2022-01-19 07:20:52,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 437 transitions, 2136 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-01-19 07:20:52,364 INFO L242 Difference]: Finished difference. Result has 373 places, 377 transitions, 1524 flow [2022-01-19 07:20:52,365 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1524, PETRI_PLACES=373, PETRI_TRANSITIONS=377} [2022-01-19 07:20:52,365 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 79 predicate places. [2022-01-19 07:20:52,365 INFO L470 AbstractCegarLoop]: Abstraction has has 373 places, 377 transitions, 1524 flow [2022-01-19 07:20:52,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:52,365 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:52,365 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] [2022-01-19 07:20:52,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 07:20:52,366 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 07:20:52,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:52,366 INFO L85 PathProgramCache]: Analyzing trace with hash -824429605, now seen corresponding path program 3 times [2022-01-19 07:20:52,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:52,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264709441] [2022-01-19 07:20:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:52,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:52,392 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 07:20:52,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:52,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264709441] [2022-01-19 07:20:52,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264709441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:52,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:52,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:52,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753296827] [2022-01-19 07:20:52,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:52,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:52,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:52,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:52,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:52,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:20:52,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 377 transitions, 1524 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:52,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:52,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:20:52,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:55,106 INFO L129 PetriNetUnfolder]: 3255/21298 cut-off events. [2022-01-19 07:20:55,106 INFO L130 PetriNetUnfolder]: For 22455/24451 co-relation queries the response was YES. [2022-01-19 07:20:55,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42625 conditions, 21298 events. 3255/21298 cut-off events. For 22455/24451 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 312128 event pairs, 806 based on Foata normal form. 358/20174 useless extension candidates. Maximal degree in co-relation 42579. Up to 2238 conditions per place. [2022-01-19 07:20:55,246 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 53 selfloop transitions, 22 changer transitions 22/416 dead transitions. [2022-01-19 07:20:55,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 416 transitions, 1912 flow [2022-01-19 07:20:55,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:20:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:20:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1535 transitions. [2022-01-19 07:20:55,250 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9246987951807228 [2022-01-19 07:20:55,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1535 transitions. [2022-01-19 07:20:55,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1535 transitions. [2022-01-19 07:20:55,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:55,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1535 transitions. [2022-01-19 07:20:55,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:55,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:55,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:55,267 INFO L186 Difference]: Start difference. First operand has 373 places, 377 transitions, 1524 flow. Second operand 5 states and 1535 transitions. [2022-01-19 07:20:55,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 416 transitions, 1912 flow [2022-01-19 07:20:55,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 416 transitions, 1901 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 07:20:55,555 INFO L242 Difference]: Finished difference. Result has 374 places, 373 transitions, 1536 flow [2022-01-19 07:20:55,555 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1536, PETRI_PLACES=374, PETRI_TRANSITIONS=373} [2022-01-19 07:20:55,556 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 80 predicate places. [2022-01-19 07:20:55,556 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 373 transitions, 1536 flow [2022-01-19 07:20:55,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:55,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:55,556 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] [2022-01-19 07:20:55,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 07:20:55,556 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 07:20:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash -521417833, now seen corresponding path program 1 times [2022-01-19 07:20:55,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:55,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078493812] [2022-01-19 07:20:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:55,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:55,865 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 07:20:55,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:55,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078493812] [2022-01-19 07:20:55,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078493812] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:20:55,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930592561] [2022-01-19 07:20:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:55,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:20:55,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:20:55,868 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 07:20:55,871 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 07:20:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:55,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 07:20:55,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:20:56,658 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 07:20:56,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:20:57,235 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 07:20:57,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930592561] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:20:57,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:20:57,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 14] total 31 [2022-01-19 07:20:57,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607384242] [2022-01-19 07:20:57,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:57,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:20:57,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:57,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:20:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2022-01-19 07:20:57,239 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 332 [2022-01-19 07:20:57,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 373 transitions, 1536 flow. Second operand has 14 states, 14 states have (on average 231.0) internal successors, (3234), 14 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:57,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:57,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 332 [2022-01-19 07:20:57,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:03,624 INFO L129 PetriNetUnfolder]: 9411/43425 cut-off events. [2022-01-19 07:21:03,624 INFO L130 PetriNetUnfolder]: For 48610/54036 co-relation queries the response was YES. [2022-01-19 07:21:04,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85860 conditions, 43425 events. 9411/43425 cut-off events. For 48610/54036 co-relation queries the response was YES. Maximal size of possible extension queue 1636. Compared 660519 event pairs, 5233 based on Foata normal form. 1295/39624 useless extension candidates. Maximal degree in co-relation 85814. Up to 4862 conditions per place. [2022-01-19 07:21:04,093 INFO L132 encePairwiseOnDemand]: 305/332 looper letters, 223 selfloop transitions, 38 changer transitions 12/528 dead transitions. [2022-01-19 07:21:04,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 528 transitions, 2790 flow [2022-01-19 07:21:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 07:21:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 07:21:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4509 transitions. [2022-01-19 07:21:04,096 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7148065948002537 [2022-01-19 07:21:04,096 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4509 transitions. [2022-01-19 07:21:04,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4509 transitions. [2022-01-19 07:21:04,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:04,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4509 transitions. [2022-01-19 07:21:04,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 237.31578947368422) internal successors, (4509), 19 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:04,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 332.0) internal successors, (6640), 20 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:04,106 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 332.0) internal successors, (6640), 20 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:04,106 INFO L186 Difference]: Start difference. First operand has 374 places, 373 transitions, 1536 flow. Second operand 19 states and 4509 transitions. [2022-01-19 07:21:04,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 528 transitions, 2790 flow [2022-01-19 07:21:04,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 528 transitions, 2731 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-01-19 07:21:04,452 INFO L242 Difference]: Finished difference. Result has 395 places, 391 transitions, 1689 flow [2022-01-19 07:21:04,452 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1689, PETRI_PLACES=395, PETRI_TRANSITIONS=391} [2022-01-19 07:21:04,453 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 101 predicate places. [2022-01-19 07:21:04,453 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 391 transitions, 1689 flow [2022-01-19 07:21:04,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 231.0) internal successors, (3234), 14 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:04,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:04,454 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, 1] [2022-01-19 07:21:04,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 07:21:04,667 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,SelfDestructingSolverStorable17 [2022-01-19 07:21:04,668 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 07:21:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1793301877, now seen corresponding path program 2 times [2022-01-19 07:21:04,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:04,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172399776] [2022-01-19 07:21:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:04,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:04,789 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 07:21:04,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:04,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172399776] [2022-01-19 07:21:04,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172399776] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:21:04,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314484069] [2022-01-19 07:21:04,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:21:04,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:21:04,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:21:04,812 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 07:21:04,813 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 07:21:04,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 07:21:04,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:21:04,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 07:21:04,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:21:05,215 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 07:21:05,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 07:21:05,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314484069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:05,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 07:21:05,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 17 [2022-01-19 07:21:05,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915645844] [2022-01-19 07:21:05,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:05,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:21:05,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:21:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-01-19 07:21:05,218 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 332 [2022-01-19 07:21:05,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 391 transitions, 1689 flow. Second operand has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:05,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:05,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 332 [2022-01-19 07:21:05,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:12,463 INFO L129 PetriNetUnfolder]: 10012/48053 cut-off events. [2022-01-19 07:21:12,464 INFO L130 PetriNetUnfolder]: For 65285/71275 co-relation queries the response was YES. [2022-01-19 07:21:12,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98665 conditions, 48053 events. 10012/48053 cut-off events. For 65285/71275 co-relation queries the response was YES. Maximal size of possible extension queue 1805. Compared 746335 event pairs, 5064 based on Foata normal form. 1567/44430 useless extension candidates. Maximal degree in co-relation 98615. Up to 13530 conditions per place. [2022-01-19 07:21:12,927 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 130 selfloop transitions, 5 changer transitions 13/438 dead transitions. [2022-01-19 07:21:12,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 438 transitions, 2312 flow [2022-01-19 07:21:12,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:21:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:21:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1847 transitions. [2022-01-19 07:21:12,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.794750430292599 [2022-01-19 07:21:12,929 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1847 transitions. [2022-01-19 07:21:12,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1847 transitions. [2022-01-19 07:21:12,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:12,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1847 transitions. [2022-01-19 07:21:12,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.85714285714283) internal successors, (1847), 7 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:12,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:12,932 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:12,932 INFO L186 Difference]: Start difference. First operand has 395 places, 391 transitions, 1689 flow. Second operand 7 states and 1847 transitions. [2022-01-19 07:21:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 438 transitions, 2312 flow [2022-01-19 07:21:13,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 438 transitions, 2265 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-01-19 07:21:13,362 INFO L242 Difference]: Finished difference. Result has 395 places, 393 transitions, 1716 flow [2022-01-19 07:21:13,362 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1716, PETRI_PLACES=395, PETRI_TRANSITIONS=393} [2022-01-19 07:21:13,362 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 101 predicate places. [2022-01-19 07:21:13,362 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 393 transitions, 1716 flow [2022-01-19 07:21:13,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:13,363 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:13,363 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] [2022-01-19 07:21:13,379 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 07:21:13,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:21:13,576 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 07:21:13,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:13,576 INFO L85 PathProgramCache]: Analyzing trace with hash -347700357, now seen corresponding path program 3 times [2022-01-19 07:21:13,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:13,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5843884] [2022-01-19 07:21:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:13,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:13,721 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 07:21:13,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:13,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5843884] [2022-01-19 07:21:13,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5843884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:13,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:13,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:21:13,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414311654] [2022-01-19 07:21:13,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:13,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:21:13,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:21:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:21:13,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 332 [2022-01-19 07:21:13,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 393 transitions, 1716 flow. Second operand has 14 states, 14 states have (on average 235.78571428571428) internal successors, (3301), 14 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:13,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:13,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 332 [2022-01-19 07:21:13,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:21,345 INFO L129 PetriNetUnfolder]: 9072/49802 cut-off events. [2022-01-19 07:21:21,345 INFO L130 PetriNetUnfolder]: For 85245/91138 co-relation queries the response was YES. [2022-01-19 07:21:21,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104557 conditions, 49802 events. 9072/49802 cut-off events. For 85245/91138 co-relation queries the response was YES. Maximal size of possible extension queue 1874. Compared 802615 event pairs, 2714 based on Foata normal form. 1051/45840 useless extension candidates. Maximal degree in co-relation 104505. Up to 5463 conditions per place. [2022-01-19 07:21:21,813 INFO L132 encePairwiseOnDemand]: 311/332 looper letters, 184 selfloop transitions, 56 changer transitions 12/512 dead transitions. [2022-01-19 07:21:21,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 512 transitions, 3123 flow [2022-01-19 07:21:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:21:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:21:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4768 transitions. [2022-01-19 07:21:21,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7180722891566265 [2022-01-19 07:21:21,816 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4768 transitions. [2022-01-19 07:21:21,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4768 transitions. [2022-01-19 07:21:21,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:21,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4768 transitions. [2022-01-19 07:21:21,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 238.4) internal successors, (4768), 20 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:21,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:21,824 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:21,824 INFO L186 Difference]: Start difference. First operand has 395 places, 393 transitions, 1716 flow. Second operand 20 states and 4768 transitions. [2022-01-19 07:21:21,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 512 transitions, 3123 flow [2022-01-19 07:21:22,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 512 transitions, 3094 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-01-19 07:21:22,542 INFO L242 Difference]: Finished difference. Result has 415 places, 420 transitions, 2145 flow [2022-01-19 07:21:22,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2145, PETRI_PLACES=415, PETRI_TRANSITIONS=420} [2022-01-19 07:21:22,543 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 121 predicate places. [2022-01-19 07:21:22,543 INFO L470 AbstractCegarLoop]: Abstraction has has 415 places, 420 transitions, 2145 flow [2022-01-19 07:21:22,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.78571428571428) internal successors, (3301), 14 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:22,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:22,543 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] [2022-01-19 07:21:22,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 07:21:22,544 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 07:21:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:22,544 INFO L85 PathProgramCache]: Analyzing trace with hash -187297197, now seen corresponding path program 1 times [2022-01-19 07:21:22,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:22,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715204672] [2022-01-19 07:21:22,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:22,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:22,571 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 07:21:22,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:22,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715204672] [2022-01-19 07:21:22,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715204672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:22,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:22,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:21:22,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94797544] [2022-01-19 07:21:22,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:22,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:21:22,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:22,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:21:22,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:21:22,573 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:21:22,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 420 transitions, 2145 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:22,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:22,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:21:22,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:28,659 INFO L129 PetriNetUnfolder]: 4752/38142 cut-off events. [2022-01-19 07:21:28,659 INFO L130 PetriNetUnfolder]: For 62597/67704 co-relation queries the response was YES. [2022-01-19 07:21:29,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82594 conditions, 38142 events. 4752/38142 cut-off events. For 62597/67704 co-relation queries the response was YES. Maximal size of possible extension queue 1638. Compared 632596 event pairs, 1800 based on Foata normal form. 499/36007 useless extension candidates. Maximal degree in co-relation 82536. Up to 3683 conditions per place. [2022-01-19 07:21:29,227 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 60 selfloop transitions, 14 changer transitions 1/441 dead transitions. [2022-01-19 07:21:29,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 441 transitions, 2390 flow [2022-01-19 07:21:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1523 transitions. [2022-01-19 07:21:29,230 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9174698795180722 [2022-01-19 07:21:29,230 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1523 transitions. [2022-01-19 07:21:29,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1523 transitions. [2022-01-19 07:21:29,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:29,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1523 transitions. [2022-01-19 07:21:29,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.6) internal successors, (1523), 5 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:29,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:29,234 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:29,234 INFO L186 Difference]: Start difference. First operand has 415 places, 420 transitions, 2145 flow. Second operand 5 states and 1523 transitions. [2022-01-19 07:21:29,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 441 transitions, 2390 flow [2022-01-19 07:21:29,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 441 transitions, 2330 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-01-19 07:21:29,911 INFO L242 Difference]: Finished difference. Result has 408 places, 424 transitions, 2174 flow [2022-01-19 07:21:29,911 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2174, PETRI_PLACES=408, PETRI_TRANSITIONS=424} [2022-01-19 07:21:29,911 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 114 predicate places. [2022-01-19 07:21:29,911 INFO L470 AbstractCegarLoop]: Abstraction has has 408 places, 424 transitions, 2174 flow [2022-01-19 07:21:29,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:29,912 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:29,912 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] [2022-01-19 07:21:29,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 07:21:29,912 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 07:21:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash 675677403, now seen corresponding path program 1 times [2022-01-19 07:21:29,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:29,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630576572] [2022-01-19 07:21:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:29,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:29,941 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 07:21:29,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630576572] [2022-01-19 07:21:29,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630576572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:29,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:29,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:21:29,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908325051] [2022-01-19 07:21:29,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:29,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:21:29,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:29,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:21:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:21:29,942 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:21:29,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 424 transitions, 2174 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:29,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:29,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:21:29,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:36,353 INFO L129 PetriNetUnfolder]: 4847/40832 cut-off events. [2022-01-19 07:21:36,354 INFO L130 PetriNetUnfolder]: For 73894/79082 co-relation queries the response was YES. [2022-01-19 07:21:36,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87708 conditions, 40832 events. 4847/40832 cut-off events. For 73894/79082 co-relation queries the response was YES. Maximal size of possible extension queue 1705. Compared 687041 event pairs, 1416 based on Foata normal form. 502/38598 useless extension candidates. Maximal degree in co-relation 87652. Up to 4247 conditions per place. [2022-01-19 07:21:37,052 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 68 selfloop transitions, 30 changer transitions 8/472 dead transitions. [2022-01-19 07:21:37,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 472 transitions, 2748 flow [2022-01-19 07:21:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:37,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1535 transitions. [2022-01-19 07:21:37,054 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9246987951807228 [2022-01-19 07:21:37,054 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1535 transitions. [2022-01-19 07:21:37,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1535 transitions. [2022-01-19 07:21:37,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:37,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1535 transitions. [2022-01-19 07:21:37,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:37,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:37,061 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:37,061 INFO L186 Difference]: Start difference. First operand has 408 places, 424 transitions, 2174 flow. Second operand 5 states and 1535 transitions. [2022-01-19 07:21:37,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 472 transitions, 2748 flow [2022-01-19 07:21:38,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 472 transitions, 2735 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 07:21:38,170 INFO L242 Difference]: Finished difference. Result has 415 places, 440 transitions, 2477 flow [2022-01-19 07:21:38,171 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2477, PETRI_PLACES=415, PETRI_TRANSITIONS=440} [2022-01-19 07:21:38,173 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 121 predicate places. [2022-01-19 07:21:38,173 INFO L470 AbstractCegarLoop]: Abstraction has has 415 places, 440 transitions, 2477 flow [2022-01-19 07:21:38,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:38,173 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:38,174 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] [2022-01-19 07:21:38,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 07:21:38,174 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 07:21:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:38,174 INFO L85 PathProgramCache]: Analyzing trace with hash 526203443, now seen corresponding path program 2 times [2022-01-19 07:21:38,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:38,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109041354] [2022-01-19 07:21:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:38,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:38,214 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 07:21:38,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:38,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109041354] [2022-01-19 07:21:38,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109041354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:38,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:38,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:21:38,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086609555] [2022-01-19 07:21:38,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:38,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:21:38,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:38,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:21:38,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:21:38,215 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:21:38,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 440 transitions, 2477 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:38,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:38,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:21:38,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:44,685 INFO L129 PetriNetUnfolder]: 4450/39240 cut-off events. [2022-01-19 07:21:44,685 INFO L130 PetriNetUnfolder]: For 77648/83196 co-relation queries the response was YES. [2022-01-19 07:21:45,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84543 conditions, 39240 events. 4450/39240 cut-off events. For 77648/83196 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 652108 event pairs, 1725 based on Foata normal form. 474/37150 useless extension candidates. Maximal degree in co-relation 84484. Up to 3953 conditions per place. [2022-01-19 07:21:45,346 INFO L132 encePairwiseOnDemand]: 325/332 looper letters, 75 selfloop transitions, 17 changer transitions 1/459 dead transitions. [2022-01-19 07:21:45,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 459 transitions, 2708 flow [2022-01-19 07:21:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1528 transitions. [2022-01-19 07:21:45,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9204819277108434 [2022-01-19 07:21:45,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1528 transitions. [2022-01-19 07:21:45,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1528 transitions. [2022-01-19 07:21:45,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:45,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1528 transitions. [2022-01-19 07:21:45,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.6) internal successors, (1528), 5 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:45,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:45,359 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:45,359 INFO L186 Difference]: Start difference. First operand has 415 places, 440 transitions, 2477 flow. Second operand 5 states and 1528 transitions. [2022-01-19 07:21:45,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 459 transitions, 2708 flow [2022-01-19 07:21:45,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 459 transitions, 2700 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-01-19 07:21:45,985 INFO L242 Difference]: Finished difference. Result has 421 places, 439 transitions, 2508 flow [2022-01-19 07:21:45,986 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2438, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2508, PETRI_PLACES=421, PETRI_TRANSITIONS=439} [2022-01-19 07:21:45,986 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 127 predicate places. [2022-01-19 07:21:45,986 INFO L470 AbstractCegarLoop]: Abstraction has has 421 places, 439 transitions, 2508 flow [2022-01-19 07:21:45,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:45,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:45,986 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] [2022-01-19 07:21:45,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 07:21:45,987 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 07:21:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1430628829, now seen corresponding path program 3 times [2022-01-19 07:21:45,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:45,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125778576] [2022-01-19 07:21:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:45,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:46,031 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 07:21:46,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:46,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125778576] [2022-01-19 07:21:46,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125778576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:46,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:46,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:21:46,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052660639] [2022-01-19 07:21:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:46,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:21:46,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:21:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:21:46,033 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:21:46,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 439 transitions, 2508 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:46,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:46,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:21:46,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:52,500 INFO L129 PetriNetUnfolder]: 4512/39886 cut-off events. [2022-01-19 07:21:52,500 INFO L130 PetriNetUnfolder]: For 79764/85880 co-relation queries the response was YES. [2022-01-19 07:21:53,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86665 conditions, 39886 events. 4512/39886 cut-off events. For 79764/85880 co-relation queries the response was YES. Maximal size of possible extension queue 1577. Compared 663884 event pairs, 2053 based on Foata normal form. 342/37500 useless extension candidates. Maximal degree in co-relation 86604. Up to 5064 conditions per place. [2022-01-19 07:21:53,087 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 71 selfloop transitions, 7 changer transitions 3/447 dead transitions. [2022-01-19 07:21:53,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 447 transitions, 2686 flow [2022-01-19 07:21:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:21:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:21:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1213 transitions. [2022-01-19 07:21:53,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9134036144578314 [2022-01-19 07:21:53,089 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1213 transitions. [2022-01-19 07:21:53,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1213 transitions. [2022-01-19 07:21:53,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:53,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1213 transitions. [2022-01-19 07:21:53,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:53,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:53,091 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:53,091 INFO L186 Difference]: Start difference. First operand has 421 places, 439 transitions, 2508 flow. Second operand 4 states and 1213 transitions. [2022-01-19 07:21:53,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 447 transitions, 2686 flow [2022-01-19 07:21:54,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 447 transitions, 2686 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:21:54,059 INFO L242 Difference]: Finished difference. Result has 425 places, 437 transitions, 2502 flow [2022-01-19 07:21:54,059 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2502, PETRI_PLACES=425, PETRI_TRANSITIONS=437} [2022-01-19 07:21:54,059 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 131 predicate places. [2022-01-19 07:21:54,059 INFO L470 AbstractCegarLoop]: Abstraction has has 425 places, 437 transitions, 2502 flow [2022-01-19 07:21:54,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:54,060 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:54,060 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] [2022-01-19 07:21:54,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 07:21:54,060 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 07:21:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -662587281, now seen corresponding path program 4 times [2022-01-19 07:21:54,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:54,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604456235] [2022-01-19 07:21:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:54,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:54,089 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 07:21:54,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:54,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604456235] [2022-01-19 07:21:54,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604456235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:54,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:54,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:21:54,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064364223] [2022-01-19 07:21:54,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:54,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:21:54,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:21:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:21:54,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:21:54,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 437 transitions, 2502 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:54,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:54,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:21:54,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:59,031 INFO L129 PetriNetUnfolder]: 3869/32920 cut-off events. [2022-01-19 07:21:59,031 INFO L130 PetriNetUnfolder]: For 72122/75925 co-relation queries the response was YES. [2022-01-19 07:21:59,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72030 conditions, 32920 events. 3869/32920 cut-off events. For 72122/75925 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 531104 event pairs, 1009 based on Foata normal form. 381/31243 useless extension candidates. Maximal degree in co-relation 71967. Up to 3447 conditions per place. [2022-01-19 07:21:59,416 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 53 selfloop transitions, 26 changer transitions 20/458 dead transitions. [2022-01-19 07:21:59,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 458 transitions, 2750 flow [2022-01-19 07:21:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1529 transitions. [2022-01-19 07:21:59,418 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9210843373493975 [2022-01-19 07:21:59,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1529 transitions. [2022-01-19 07:21:59,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1529 transitions. [2022-01-19 07:21:59,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:59,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1529 transitions. [2022-01-19 07:21:59,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.8) internal successors, (1529), 5 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:59,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:59,420 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:59,420 INFO L186 Difference]: Start difference. First operand has 425 places, 437 transitions, 2502 flow. Second operand 5 states and 1529 transitions. [2022-01-19 07:21:59,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 458 transitions, 2750 flow [2022-01-19 07:21:59,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 458 transitions, 2734 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 07:21:59,901 INFO L242 Difference]: Finished difference. Result has 427 places, 425 transitions, 2419 flow [2022-01-19 07:21:59,901 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2419, PETRI_PLACES=427, PETRI_TRANSITIONS=425} [2022-01-19 07:21:59,901 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 133 predicate places. [2022-01-19 07:21:59,902 INFO L470 AbstractCegarLoop]: Abstraction has has 427 places, 425 transitions, 2419 flow [2022-01-19 07:21:59,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:59,902 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:59,908 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] [2022-01-19 07:21:59,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 07:21:59,909 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 07:21:59,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:59,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1029623181, now seen corresponding path program 5 times [2022-01-19 07:21:59,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:59,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197350117] [2022-01-19 07:21:59,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:59,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:59,982 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 07:21:59,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:59,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197350117] [2022-01-19 07:21:59,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197350117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:59,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:59,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:21:59,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523482798] [2022-01-19 07:21:59,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:59,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:21:59,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:59,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:21:59,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:21:59,983 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:21:59,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 425 transitions, 2419 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:59,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:59,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:21:59,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:05,253 INFO L129 PetriNetUnfolder]: 3799/32774 cut-off events. [2022-01-19 07:22:05,253 INFO L130 PetriNetUnfolder]: For 64075/67427 co-relation queries the response was YES. [2022-01-19 07:22:05,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69953 conditions, 32774 events. 3799/32774 cut-off events. For 64075/67427 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 520654 event pairs, 1385 based on Foata normal form. 187/30810 useless extension candidates. Maximal degree in co-relation 69890. Up to 3139 conditions per place. [2022-01-19 07:22:05,702 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 55 selfloop transitions, 13 changer transitions 3/430 dead transitions. [2022-01-19 07:22:05,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 430 transitions, 2556 flow [2022-01-19 07:22:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:22:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:22:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1209 transitions. [2022-01-19 07:22:05,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9103915662650602 [2022-01-19 07:22:05,704 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1209 transitions. [2022-01-19 07:22:05,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1209 transitions. [2022-01-19 07:22:05,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:05,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1209 transitions. [2022-01-19 07:22:05,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:05,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:05,707 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:05,707 INFO L186 Difference]: Start difference. First operand has 427 places, 425 transitions, 2419 flow. Second operand 4 states and 1209 transitions. [2022-01-19 07:22:05,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 430 transitions, 2556 flow [2022-01-19 07:22:06,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 430 transitions, 2482 flow, removed 14 selfloop flow, removed 7 redundant places. [2022-01-19 07:22:06,213 INFO L242 Difference]: Finished difference. Result has 414 places, 423 transitions, 2334 flow [2022-01-19 07:22:06,214 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2334, PETRI_PLACES=414, PETRI_TRANSITIONS=423} [2022-01-19 07:22:06,214 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 120 predicate places. [2022-01-19 07:22:06,214 INFO L470 AbstractCegarLoop]: Abstraction has has 414 places, 423 transitions, 2334 flow [2022-01-19 07:22:06,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:06,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:06,215 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] [2022-01-19 07:22:06,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 07:22:06,215 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 07:22:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1629439128, now seen corresponding path program 1 times [2022-01-19 07:22:06,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:06,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522765337] [2022-01-19 07:22:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:06,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:22:06,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:06,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522765337] [2022-01-19 07:22:06,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522765337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:22:06,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:22:06,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:22:06,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029813342] [2022-01-19 07:22:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:06,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:22:06,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:22:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:22:06,260 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:22:06,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 423 transitions, 2334 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:06,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:06,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:22:06,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:11,375 INFO L129 PetriNetUnfolder]: 4055/34597 cut-off events. [2022-01-19 07:22:11,376 INFO L130 PetriNetUnfolder]: For 70712/74210 co-relation queries the response was YES. [2022-01-19 07:22:11,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74607 conditions, 34597 events. 4055/34597 cut-off events. For 70712/74210 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 559406 event pairs, 1299 based on Foata normal form. 244/32473 useless extension candidates. Maximal degree in co-relation 74549. Up to 3133 conditions per place. [2022-01-19 07:22:11,760 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 82 selfloop transitions, 19 changer transitions 6/466 dead transitions. [2022-01-19 07:22:11,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 466 transitions, 3012 flow [2022-01-19 07:22:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:22:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:22:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1521 transitions. [2022-01-19 07:22:11,762 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9162650602409639 [2022-01-19 07:22:11,762 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1521 transitions. [2022-01-19 07:22:11,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1521 transitions. [2022-01-19 07:22:11,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:11,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1521 transitions. [2022-01-19 07:22:11,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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 07:22:11,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:11,765 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:11,765 INFO L186 Difference]: Start difference. First operand has 414 places, 423 transitions, 2334 flow. Second operand 5 states and 1521 transitions. [2022-01-19 07:22:11,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 466 transitions, 3012 flow [2022-01-19 07:22:12,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 466 transitions, 2990 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-01-19 07:22:12,241 INFO L242 Difference]: Finished difference. Result has 419 places, 434 transitions, 2595 flow [2022-01-19 07:22:12,241 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2595, PETRI_PLACES=419, PETRI_TRANSITIONS=434} [2022-01-19 07:22:12,241 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 125 predicate places. [2022-01-19 07:22:12,241 INFO L470 AbstractCegarLoop]: Abstraction has has 419 places, 434 transitions, 2595 flow [2022-01-19 07:22:12,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:12,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:12,242 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, 1] [2022-01-19 07:22:12,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 07:22:12,242 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 07:22:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash -689714854, now seen corresponding path program 2 times [2022-01-19 07:22:12,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:12,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293369579] [2022-01-19 07:22:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:12,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:22:12,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:12,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293369579] [2022-01-19 07:22:12,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293369579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:22:12,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:22:12,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:22:12,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301739247] [2022-01-19 07:22:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:12,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:22:12,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:12,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:22:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:22:12,283 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:22:12,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 434 transitions, 2595 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:12,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:12,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:22:12,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:17,921 INFO L129 PetriNetUnfolder]: 4372/37256 cut-off events. [2022-01-19 07:22:17,923 INFO L130 PetriNetUnfolder]: For 73806/77063 co-relation queries the response was YES. [2022-01-19 07:22:18,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80507 conditions, 37256 events. 4372/37256 cut-off events. For 73806/77063 co-relation queries the response was YES. Maximal size of possible extension queue 1574. Compared 619349 event pairs, 1340 based on Foata normal form. 244/34946 useless extension candidates. Maximal degree in co-relation 80446. Up to 3303 conditions per place. [2022-01-19 07:22:18,409 INFO L132 encePairwiseOnDemand]: 325/332 looper letters, 59 selfloop transitions, 33 changer transitions 5/456 dead transitions. [2022-01-19 07:22:18,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 456 transitions, 2906 flow [2022-01-19 07:22:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:22:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:22:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1526 transitions. [2022-01-19 07:22:18,411 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9192771084337349 [2022-01-19 07:22:18,411 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1526 transitions. [2022-01-19 07:22:18,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1526 transitions. [2022-01-19 07:22:18,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:18,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1526 transitions. [2022-01-19 07:22:18,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.2) internal successors, (1526), 5 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:18,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:18,413 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:18,413 INFO L186 Difference]: Start difference. First operand has 419 places, 434 transitions, 2595 flow. Second operand 5 states and 1526 transitions. [2022-01-19 07:22:18,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 456 transitions, 2906 flow [2022-01-19 07:22:18,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 456 transitions, 2903 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:22:18,926 INFO L242 Difference]: Finished difference. Result has 424 places, 434 transitions, 2685 flow [2022-01-19 07:22:18,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2685, PETRI_PLACES=424, PETRI_TRANSITIONS=434} [2022-01-19 07:22:18,930 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 130 predicate places. [2022-01-19 07:22:18,930 INFO L470 AbstractCegarLoop]: Abstraction has has 424 places, 434 transitions, 2685 flow [2022-01-19 07:22:18,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:18,931 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:18,931 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] [2022-01-19 07:22:18,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 07:22:18,931 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 07:22:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash -172368648, now seen corresponding path program 1 times [2022-01-19 07:22:18,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:18,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698495637] [2022-01-19 07:22:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:18,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:19,049 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 07:22:19,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:19,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698495637] [2022-01-19 07:22:19,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698495637] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:22:19,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40125474] [2022-01-19 07:22:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:19,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:22:19,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:22:19,051 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 07:22:19,083 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 07:22:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:19,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 07:22:19,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:22:19,646 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 07:22:19,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:22:20,237 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 07:22:20,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40125474] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:22:20,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:22:20,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-01-19 07:22:20,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235590843] [2022-01-19 07:22:20,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:20,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 07:22:20,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 07:22:20,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-19 07:22:20,239 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 332 [2022-01-19 07:22:20,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 434 transitions, 2685 flow. Second operand has 11 states, 11 states have (on average 260.45454545454544) internal successors, (2865), 11 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:20,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:20,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 332 [2022-01-19 07:22:20,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:28,711 INFO L129 PetriNetUnfolder]: 10137/50368 cut-off events. [2022-01-19 07:22:28,711 INFO L130 PetriNetUnfolder]: For 110312/115310 co-relation queries the response was YES. [2022-01-19 07:22:29,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109516 conditions, 50368 events. 10137/50368 cut-off events. For 110312/115310 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 801735 event pairs, 3026 based on Foata normal form. 310/44542 useless extension candidates. Maximal degree in co-relation 109453. Up to 5409 conditions per place. [2022-01-19 07:22:29,439 INFO L132 encePairwiseOnDemand]: 314/332 looper letters, 220 selfloop transitions, 28 changer transitions 13/573 dead transitions. [2022-01-19 07:22:29,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 573 transitions, 4109 flow [2022-01-19 07:22:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 07:22:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 07:22:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5048 transitions. [2022-01-19 07:22:29,442 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8002536461636017 [2022-01-19 07:22:29,442 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5048 transitions. [2022-01-19 07:22:29,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5048 transitions. [2022-01-19 07:22:29,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:29,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5048 transitions. [2022-01-19 07:22:29,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 265.6842105263158) internal successors, (5048), 19 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:29,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 332.0) internal successors, (6640), 20 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:29,450 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 332.0) internal successors, (6640), 20 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:29,450 INFO L186 Difference]: Start difference. First operand has 424 places, 434 transitions, 2685 flow. Second operand 19 states and 5048 transitions. [2022-01-19 07:22:29,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 573 transitions, 4109 flow [2022-01-19 07:22:30,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 573 transitions, 4074 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:22:30,028 INFO L242 Difference]: Finished difference. Result has 443 places, 437 transitions, 2695 flow [2022-01-19 07:22:30,028 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2695, PETRI_PLACES=443, PETRI_TRANSITIONS=437} [2022-01-19 07:22:30,028 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 149 predicate places. [2022-01-19 07:22:30,029 INFO L470 AbstractCegarLoop]: Abstraction has has 443 places, 437 transitions, 2695 flow [2022-01-19 07:22:30,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 260.45454545454544) internal successors, (2865), 11 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:30,029 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:30,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:22:30,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-19 07:22:30,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-19 07:22:30,243 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 07:22:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash 362017285, now seen corresponding path program 1 times [2022-01-19 07:22:30,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:30,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831793392] [2022-01-19 07:22:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:30,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:30,303 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 07:22:30,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:30,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831793392] [2022-01-19 07:22:30,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831793392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:22:30,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:22:30,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:22:30,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692910578] [2022-01-19 07:22:30,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:30,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:22:30,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:30,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:22:30,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:22:30,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:22:30,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 437 transitions, 2695 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:30,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:30,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:22:30,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:36,406 INFO L129 PetriNetUnfolder]: 4228/36950 cut-off events. [2022-01-19 07:22:36,406 INFO L130 PetriNetUnfolder]: For 78765/81868 co-relation queries the response was YES. [2022-01-19 07:22:36,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80612 conditions, 36950 events. 4228/36950 cut-off events. For 78765/81868 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 614468 event pairs, 1247 based on Foata normal form. 226/34776 useless extension candidates. Maximal degree in co-relation 80546. Up to 3236 conditions per place. [2022-01-19 07:22:36,832 INFO L132 encePairwiseOnDemand]: 325/332 looper letters, 71 selfloop transitions, 26 changer transitions 0/459 dead transitions. [2022-01-19 07:22:36,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 459 transitions, 3060 flow [2022-01-19 07:22:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:22:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:22:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1524 transitions. [2022-01-19 07:22:36,833 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9180722891566265 [2022-01-19 07:22:36,833 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1524 transitions. [2022-01-19 07:22:36,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1524 transitions. [2022-01-19 07:22:36,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:36,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1524 transitions. [2022-01-19 07:22:36,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.8) internal successors, (1524), 5 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:36,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:36,835 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:36,836 INFO L186 Difference]: Start difference. First operand has 443 places, 437 transitions, 2695 flow. Second operand 5 states and 1524 transitions. [2022-01-19 07:22:36,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 459 transitions, 3060 flow [2022-01-19 07:22:37,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 459 transitions, 3024 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-01-19 07:22:37,423 INFO L242 Difference]: Finished difference. Result has 440 places, 440 transitions, 2810 flow [2022-01-19 07:22:37,424 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2810, PETRI_PLACES=440, PETRI_TRANSITIONS=440} [2022-01-19 07:22:37,424 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 146 predicate places. [2022-01-19 07:22:37,424 INFO L470 AbstractCegarLoop]: Abstraction has has 440 places, 440 transitions, 2810 flow [2022-01-19 07:22:37,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:37,425 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:37,425 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 07:22:37,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 07:22:37,425 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 07:22:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash -639401874, now seen corresponding path program 1 times [2022-01-19 07:22:37,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:37,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59000996] [2022-01-19 07:22:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:37,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:37,473 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 07:22:37,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:37,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59000996] [2022-01-19 07:22:37,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59000996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:22:37,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:22:37,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:22:37,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301801483] [2022-01-19 07:22:37,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:37,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:22:37,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:22:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:22:37,475 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 332 [2022-01-19 07:22:37,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 440 transitions, 2810 flow. Second operand has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:37,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:37,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 332 [2022-01-19 07:22:37,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:42,702 INFO L129 PetriNetUnfolder]: 5359/31479 cut-off events. [2022-01-19 07:22:42,703 INFO L130 PetriNetUnfolder]: For 80055/87775 co-relation queries the response was YES. [2022-01-19 07:22:42,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70650 conditions, 31479 events. 5359/31479 cut-off events. For 80055/87775 co-relation queries the response was YES. Maximal size of possible extension queue 1429. Compared 484755 event pairs, 2798 based on Foata normal form. 362/28887 useless extension candidates. Maximal degree in co-relation 70581. Up to 6685 conditions per place. [2022-01-19 07:22:42,956 INFO L132 encePairwiseOnDemand]: 321/332 looper letters, 83 selfloop transitions, 14 changer transitions 77/485 dead transitions. [2022-01-19 07:22:42,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 485 transitions, 3432 flow [2022-01-19 07:22:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 07:22:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 07:22:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2704 transitions. [2022-01-19 07:22:42,959 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8144578313253013 [2022-01-19 07:22:42,959 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2704 transitions. [2022-01-19 07:22:42,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2704 transitions. [2022-01-19 07:22:42,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:42,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2704 transitions. [2022-01-19 07:22:42,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 270.4) internal successors, (2704), 10 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:42,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:42,973 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:42,973 INFO L186 Difference]: Start difference. First operand has 440 places, 440 transitions, 2810 flow. Second operand 10 states and 2704 transitions. [2022-01-19 07:22:42,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 485 transitions, 3432 flow [2022-01-19 07:22:43,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 485 transitions, 3383 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-01-19 07:22:43,329 INFO L242 Difference]: Finished difference. Result has 449 places, 405 transitions, 2452 flow [2022-01-19 07:22:43,329 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2452, PETRI_PLACES=449, PETRI_TRANSITIONS=405} [2022-01-19 07:22:43,330 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 155 predicate places. [2022-01-19 07:22:43,330 INFO L470 AbstractCegarLoop]: Abstraction has has 449 places, 405 transitions, 2452 flow [2022-01-19 07:22:43,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:43,330 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:43,330 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 07:22:43,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 07:22:43,330 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 07:22:43,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:43,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2063265941, now seen corresponding path program 1 times [2022-01-19 07:22:43,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:43,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988732753] [2022-01-19 07:22:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:43,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:43,379 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 07:22:43,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:43,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988732753] [2022-01-19 07:22:43,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988732753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:22:43,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:22:43,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:22:43,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086961835] [2022-01-19 07:22:43,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:43,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:22:43,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:43,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:22:43,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:22:43,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 332 [2022-01-19 07:22:43,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 405 transitions, 2452 flow. Second operand has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:43,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:43,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 332 [2022-01-19 07:22:43,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:45,088 INFO L129 PetriNetUnfolder]: 1080/9714 cut-off events. [2022-01-19 07:22:45,088 INFO L130 PetriNetUnfolder]: For 18948/21265 co-relation queries the response was YES. [2022-01-19 07:22:45,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20831 conditions, 9714 events. 1080/9714 cut-off events. For 18948/21265 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 126813 event pairs, 563 based on Foata normal form. 145/9151 useless extension candidates. Maximal degree in co-relation 20761. Up to 1706 conditions per place. [2022-01-19 07:22:45,195 INFO L132 encePairwiseOnDemand]: 321/332 looper letters, 63 selfloop transitions, 8 changer transitions 48/428 dead transitions. [2022-01-19 07:22:45,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 428 transitions, 2731 flow [2022-01-19 07:22:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 07:22:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 07:22:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2714 transitions. [2022-01-19 07:22:45,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8174698795180723 [2022-01-19 07:22:45,197 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2714 transitions. [2022-01-19 07:22:45,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2714 transitions. [2022-01-19 07:22:45,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:45,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2714 transitions. [2022-01-19 07:22:45,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 271.4) internal successors, (2714), 10 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:45,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:45,201 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:45,201 INFO L186 Difference]: Start difference. First operand has 449 places, 405 transitions, 2452 flow. Second operand 10 states and 2714 transitions. [2022-01-19 07:22:45,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 428 transitions, 2731 flow [2022-01-19 07:22:45,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 428 transitions, 2628 flow, removed 27 selfloop flow, removed 22 redundant places. [2022-01-19 07:22:45,273 INFO L242 Difference]: Finished difference. Result has 421 places, 378 transitions, 2187 flow [2022-01-19 07:22:45,273 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2187, PETRI_PLACES=421, PETRI_TRANSITIONS=378} [2022-01-19 07:22:45,274 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 127 predicate places. [2022-01-19 07:22:45,275 INFO L470 AbstractCegarLoop]: Abstraction has has 421 places, 378 transitions, 2187 flow [2022-01-19 07:22:45,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:45,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:45,275 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] [2022-01-19 07:22:45,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 07:22:45,275 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 07:22:45,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1944799903, now seen corresponding path program 1 times [2022-01-19 07:22:45,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:45,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254870185] [2022-01-19 07:22:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:45,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:22:45,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:45,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254870185] [2022-01-19 07:22:45,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254870185] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:22:45,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520044743] [2022-01-19 07:22:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:45,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:22:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:22:45,412 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 07:22:45,413 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 07:22:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:45,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 07:22:45,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:22:46,144 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 07:22:46,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:22:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:22:46,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520044743] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:22:46,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:22:46,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2022-01-19 07:22:46,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771610813] [2022-01-19 07:22:46,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:22:46,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 07:22:46,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 07:22:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 07:22:46,750 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 332 [2022-01-19 07:22:46,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 378 transitions, 2187 flow. Second operand has 34 states, 34 states have (on average 226.02941176470588) internal successors, (7685), 34 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:46,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:46,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 332 [2022-01-19 07:22:46,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:23:01,555 INFO L129 PetriNetUnfolder]: 16478/81389 cut-off events. [2022-01-19 07:23:01,556 INFO L130 PetriNetUnfolder]: For 128323/137376 co-relation queries the response was YES. [2022-01-19 07:23:02,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173752 conditions, 81389 events. 16478/81389 cut-off events. For 128323/137376 co-relation queries the response was YES. Maximal size of possible extension queue 3301. Compared 1377765 event pairs, 6660 based on Foata normal form. 3585/76953 useless extension candidates. Maximal degree in co-relation 173694. Up to 8833 conditions per place. [2022-01-19 07:23:02,590 INFO L132 encePairwiseOnDemand]: 294/332 looper letters, 384 selfloop transitions, 104 changer transitions 54/803 dead transitions. [2022-01-19 07:23:02,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 803 transitions, 5949 flow [2022-01-19 07:23:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-19 07:23:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-01-19 07:23:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 15778 transitions. [2022-01-19 07:23:02,625 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6789156626506024 [2022-01-19 07:23:02,625 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 15778 transitions. [2022-01-19 07:23:02,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 15778 transitions. [2022-01-19 07:23:02,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:23:02,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 15778 transitions. [2022-01-19 07:23:02,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 225.4) internal successors, (15778), 70 states have internal predecessors, (15778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:02,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 332.0) internal successors, (23572), 71 states have internal predecessors, (23572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:02,653 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 332.0) internal successors, (23572), 71 states have internal predecessors, (23572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:02,653 INFO L186 Difference]: Start difference. First operand has 421 places, 378 transitions, 2187 flow. Second operand 70 states and 15778 transitions. [2022-01-19 07:23:02,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 803 transitions, 5949 flow [2022-01-19 07:23:04,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 803 transitions, 5828 flow, removed 21 selfloop flow, removed 19 redundant places. [2022-01-19 07:23:04,036 INFO L242 Difference]: Finished difference. Result has 485 places, 464 transitions, 3168 flow [2022-01-19 07:23:04,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=3168, PETRI_PLACES=485, PETRI_TRANSITIONS=464} [2022-01-19 07:23:04,046 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 191 predicate places. [2022-01-19 07:23:04,046 INFO L470 AbstractCegarLoop]: Abstraction has has 485 places, 464 transitions, 3168 flow [2022-01-19 07:23:04,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 226.02941176470588) internal successors, (7685), 34 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:04,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:23:04,047 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] [2022-01-19 07:23:04,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-19 07:23:04,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:23:04,259 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 07:23:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:23:04,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2095618797, now seen corresponding path program 1 times [2022-01-19 07:23:04,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:23:04,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979372006] [2022-01-19 07:23:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:04,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:23:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:23:04,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:23:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979372006] [2022-01-19 07:23:04,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979372006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:23:04,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:23:04,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 07:23:04,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752405444] [2022-01-19 07:23:04,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:23:04,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:23:04,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:23:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:23:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:23:04,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 332 [2022-01-19 07:23:04,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 464 transitions, 3168 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:04,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:23:04,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 332 [2022-01-19 07:23:04,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:23:11,254 INFO L129 PetriNetUnfolder]: 3737/38159 cut-off events. [2022-01-19 07:23:11,254 INFO L130 PetriNetUnfolder]: For 122251/130883 co-relation queries the response was YES. [2022-01-19 07:23:11,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93381 conditions, 38159 events. 3737/38159 cut-off events. For 122251/130883 co-relation queries the response was YES. Maximal size of possible extension queue 1749. Compared 657788 event pairs, 1179 based on Foata normal form. 830/36588 useless extension candidates. Maximal degree in co-relation 93301. Up to 6524 conditions per place. [2022-01-19 07:23:11,713 INFO L132 encePairwiseOnDemand]: 325/332 looper letters, 94 selfloop transitions, 39 changer transitions 4/514 dead transitions. [2022-01-19 07:23:11,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 514 transitions, 3986 flow [2022-01-19 07:23:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:23:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:23:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1946 transitions. [2022-01-19 07:23:11,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8373493975903614 [2022-01-19 07:23:11,714 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1946 transitions. [2022-01-19 07:23:11,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1946 transitions. [2022-01-19 07:23:11,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:23:11,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1946 transitions. [2022-01-19 07:23:11,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:11,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:11,717 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:11,717 INFO L186 Difference]: Start difference. First operand has 485 places, 464 transitions, 3168 flow. Second operand 7 states and 1946 transitions. [2022-01-19 07:23:11,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 514 transitions, 3986 flow [2022-01-19 07:23:12,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 514 transitions, 3711 flow, removed 95 selfloop flow, removed 25 redundant places. [2022-01-19 07:23:12,304 INFO L242 Difference]: Finished difference. Result has 461 places, 502 transitions, 3603 flow [2022-01-19 07:23:12,305 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3603, PETRI_PLACES=461, PETRI_TRANSITIONS=502} [2022-01-19 07:23:12,305 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 167 predicate places. [2022-01-19 07:23:12,305 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 502 transitions, 3603 flow [2022-01-19 07:23:12,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:12,305 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:23:12,305 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] [2022-01-19 07:23:12,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 07:23:12,305 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 07:23:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:23:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1050068299, now seen corresponding path program 1 times [2022-01-19 07:23:12,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:23:12,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554770057] [2022-01-19 07:23:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:12,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:23:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:23:12,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:23:12,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554770057] [2022-01-19 07:23:12,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554770057] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:23:12,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002606246] [2022-01-19 07:23:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:12,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:23:12,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:23:12,425 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 07:23:12,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 07:23:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:12,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 07:23:12,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:23:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:23:12,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:23:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:23:13,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002606246] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:23:13,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:23:13,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 13] total 26 [2022-01-19 07:23:13,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490445160] [2022-01-19 07:23:13,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:23:13,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 07:23:13,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:23:13,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 07:23:13,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-19 07:23:13,533 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 332 [2022-01-19 07:23:13,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 502 transitions, 3603 flow. Second operand has 13 states, 13 states have (on average 236.3846153846154) internal successors, (3073), 13 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:13,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:23:13,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 332 [2022-01-19 07:23:13,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:23:28,968 INFO L129 PetriNetUnfolder]: 16181/86964 cut-off events. [2022-01-19 07:23:28,968 INFO L130 PetriNetUnfolder]: For 239092/251172 co-relation queries the response was YES. [2022-01-19 07:23:30,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200707 conditions, 86964 events. 16181/86964 cut-off events. For 239092/251172 co-relation queries the response was YES. Maximal size of possible extension queue 3854. Compared 1522879 event pairs, 8790 based on Foata normal form. 2471/79569 useless extension candidates. Maximal degree in co-relation 200635. Up to 15656 conditions per place. [2022-01-19 07:23:30,845 INFO L132 encePairwiseOnDemand]: 315/332 looper letters, 184 selfloop transitions, 38 changer transitions 13/548 dead transitions. [2022-01-19 07:23:30,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 548 transitions, 4414 flow [2022-01-19 07:23:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 07:23:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 07:23:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3351 transitions. [2022-01-19 07:23:30,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7209552495697074 [2022-01-19 07:23:30,847 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3351 transitions. [2022-01-19 07:23:30,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3351 transitions. [2022-01-19 07:23:30,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:23:30,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3351 transitions. [2022-01-19 07:23:30,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 239.35714285714286) internal successors, (3351), 14 states have internal predecessors, (3351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:30,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 332.0) internal successors, (4980), 15 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:30,877 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 332.0) internal successors, (4980), 15 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:30,877 INFO L186 Difference]: Start difference. First operand has 461 places, 502 transitions, 3603 flow. Second operand 14 states and 3351 transitions. [2022-01-19 07:23:30,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 548 transitions, 4414 flow [2022-01-19 07:23:33,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 548 transitions, 4381 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-01-19 07:23:33,619 INFO L242 Difference]: Finished difference. Result has 473 places, 497 transitions, 3618 flow [2022-01-19 07:23:33,620 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3618, PETRI_PLACES=473, PETRI_TRANSITIONS=497} [2022-01-19 07:23:33,620 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 179 predicate places. [2022-01-19 07:23:33,620 INFO L470 AbstractCegarLoop]: Abstraction has has 473 places, 497 transitions, 3618 flow [2022-01-19 07:23:33,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 236.3846153846154) internal successors, (3073), 13 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:33,620 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:23:33,620 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] [2022-01-19 07:23:33,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-19 07:23:33,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-19 07:23:33,823 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 07:23:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:23:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash 532025413, now seen corresponding path program 1 times [2022-01-19 07:23:33,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:23:33,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422553436] [2022-01-19 07:23:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:33,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:23:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:23:33,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:23:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422553436] [2022-01-19 07:23:33,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422553436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:23:33,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:23:33,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:23:33,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558825446] [2022-01-19 07:23:33,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:23:33,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:23:33,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:23:33,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:23:33,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:23:33,881 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:23:33,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 497 transitions, 3618 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:33,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:23:33,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:23:33,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:23:43,697 INFO L129 PetriNetUnfolder]: 7025/55588 cut-off events. [2022-01-19 07:23:43,697 INFO L130 PetriNetUnfolder]: For 173982/183536 co-relation queries the response was YES. [2022-01-19 07:23:44,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133512 conditions, 55588 events. 7025/55588 cut-off events. For 173982/183536 co-relation queries the response was YES. Maximal size of possible extension queue 2434. Compared 962526 event pairs, 1983 based on Foata normal form. 543/52180 useless extension candidates. Maximal degree in co-relation 133438. Up to 5848 conditions per place. [2022-01-19 07:23:44,399 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 49 selfloop transitions, 15 changer transitions 42/515 dead transitions. [2022-01-19 07:23:44,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 515 transitions, 3909 flow [2022-01-19 07:23:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:23:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:23:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1521 transitions. [2022-01-19 07:23:44,415 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9162650602409639 [2022-01-19 07:23:44,415 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1521 transitions. [2022-01-19 07:23:44,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1521 transitions. [2022-01-19 07:23:44,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:23:44,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1521 transitions. [2022-01-19 07:23:44,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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 07:23:44,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:44,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:44,417 INFO L186 Difference]: Start difference. First operand has 473 places, 497 transitions, 3618 flow. Second operand 5 states and 1521 transitions. [2022-01-19 07:23:44,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 515 transitions, 3909 flow [2022-01-19 07:23:46,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 515 transitions, 3866 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-01-19 07:23:46,163 INFO L242 Difference]: Finished difference. Result has 467 places, 461 transitions, 3070 flow [2022-01-19 07:23:46,163 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3070, PETRI_PLACES=467, PETRI_TRANSITIONS=461} [2022-01-19 07:23:46,164 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 173 predicate places. [2022-01-19 07:23:46,164 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 461 transitions, 3070 flow [2022-01-19 07:23:46,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:46,164 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:23:46,164 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] [2022-01-19 07:23:46,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 07:23:46,164 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 07:23:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:23:46,164 INFO L85 PathProgramCache]: Analyzing trace with hash -173715173, now seen corresponding path program 2 times [2022-01-19 07:23:46,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:23:46,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554190559] [2022-01-19 07:23:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:46,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:23:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:23:46,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:23:46,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554190559] [2022-01-19 07:23:46,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554190559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:23:46,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:23:46,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:23:46,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649347644] [2022-01-19 07:23:46,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:23:46,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:23:46,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:23:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:23:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:23:46,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:23:46,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 461 transitions, 3070 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:46,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:23:46,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:23:46,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:23:51,171 INFO L129 PetriNetUnfolder]: 3732/30057 cut-off events. [2022-01-19 07:23:51,171 INFO L130 PetriNetUnfolder]: For 103726/109056 co-relation queries the response was YES. [2022-01-19 07:23:51,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72984 conditions, 30057 events. 3732/30057 cut-off events. For 103726/109056 co-relation queries the response was YES. Maximal size of possible extension queue 1562. Compared 483411 event pairs, 1013 based on Foata normal form. 327/28531 useless extension candidates. Maximal degree in co-relation 72911. Up to 3184 conditions per place. [2022-01-19 07:23:51,564 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 47 selfloop transitions, 19 changer transitions 4/477 dead transitions. [2022-01-19 07:23:51,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 477 transitions, 3268 flow [2022-01-19 07:23:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:23:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:23:51,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1517 transitions. [2022-01-19 07:23:51,565 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9138554216867469 [2022-01-19 07:23:51,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1517 transitions. [2022-01-19 07:23:51,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1517 transitions. [2022-01-19 07:23:51,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:23:51,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1517 transitions. [2022-01-19 07:23:51,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.4) internal successors, (1517), 5 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:51,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:51,567 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:51,567 INFO L186 Difference]: Start difference. First operand has 467 places, 461 transitions, 3070 flow. Second operand 5 states and 1517 transitions. [2022-01-19 07:23:51,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 477 transitions, 3268 flow [2022-01-19 07:23:52,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 477 transitions, 3111 flow, removed 19 selfloop flow, removed 17 redundant places. [2022-01-19 07:23:52,116 INFO L242 Difference]: Finished difference. Result has 446 places, 460 transitions, 2976 flow [2022-01-19 07:23:52,117 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2976, PETRI_PLACES=446, PETRI_TRANSITIONS=460} [2022-01-19 07:23:52,117 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 152 predicate places. [2022-01-19 07:23:52,117 INFO L470 AbstractCegarLoop]: Abstraction has has 446 places, 460 transitions, 2976 flow [2022-01-19 07:23:52,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:52,118 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:23:52,118 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] [2022-01-19 07:23:52,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 07:23:52,118 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 07:23:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:23:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1373948169, now seen corresponding path program 3 times [2022-01-19 07:23:52,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:23:52,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148524694] [2022-01-19 07:23:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:52,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:23:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:23:52,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:23:52,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148524694] [2022-01-19 07:23:52,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148524694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:23:52,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:23:52,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:23:52,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476510045] [2022-01-19 07:23:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:23:52,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:23:52,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:23:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:23:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:23:52,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:23:52,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 460 transitions, 2976 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:52,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:23:52,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:23:52,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:23:58,117 INFO L129 PetriNetUnfolder]: 4138/36327 cut-off events. [2022-01-19 07:23:58,117 INFO L130 PetriNetUnfolder]: For 94598/100061 co-relation queries the response was YES. [2022-01-19 07:23:58,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82859 conditions, 36327 events. 4138/36327 cut-off events. For 94598/100061 co-relation queries the response was YES. Maximal size of possible extension queue 1646. Compared 597901 event pairs, 1138 based on Foata normal form. 242/34180 useless extension candidates. Maximal degree in co-relation 82796. Up to 3377 conditions per place. [2022-01-19 07:23:58,564 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 52 selfloop transitions, 17 changer transitions 2/478 dead transitions. [2022-01-19 07:23:58,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 478 transitions, 3226 flow [2022-01-19 07:23:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:23:58,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:23:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1514 transitions. [2022-01-19 07:23:58,565 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9120481927710843 [2022-01-19 07:23:58,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1514 transitions. [2022-01-19 07:23:58,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1514 transitions. [2022-01-19 07:23:58,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:23:58,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1514 transitions. [2022-01-19 07:23:58,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.8) internal successors, (1514), 5 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:58,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:58,567 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:58,567 INFO L186 Difference]: Start difference. First operand has 446 places, 460 transitions, 2976 flow. Second operand 5 states and 1514 transitions. [2022-01-19 07:23:58,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 478 transitions, 3226 flow [2022-01-19 07:23:59,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 478 transitions, 3226 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:23:59,151 INFO L242 Difference]: Finished difference. Result has 453 places, 464 transitions, 3094 flow [2022-01-19 07:23:59,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3094, PETRI_PLACES=453, PETRI_TRANSITIONS=464} [2022-01-19 07:23:59,152 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 159 predicate places. [2022-01-19 07:23:59,152 INFO L470 AbstractCegarLoop]: Abstraction has has 453 places, 464 transitions, 3094 flow [2022-01-19 07:23:59,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:59,152 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:23:59,153 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] [2022-01-19 07:23:59,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 07:23:59,153 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 07:23:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:23:59,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1640491779, now seen corresponding path program 4 times [2022-01-19 07:23:59,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:23:59,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121266922] [2022-01-19 07:23:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:59,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:23:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:23:59,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:23:59,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121266922] [2022-01-19 07:23:59,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121266922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:23:59,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:23:59,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:23:59,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050040061] [2022-01-19 07:23:59,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:23:59,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:23:59,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:23:59,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:23:59,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:23:59,208 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:23:59,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 464 transitions, 3094 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:59,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:23:59,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:23:59,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:05,349 INFO L129 PetriNetUnfolder]: 4048/35331 cut-off events. [2022-01-19 07:24:05,349 INFO L130 PetriNetUnfolder]: For 103618/109046 co-relation queries the response was YES. [2022-01-19 07:24:05,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81592 conditions, 35331 events. 4048/35331 cut-off events. For 103618/109046 co-relation queries the response was YES. Maximal size of possible extension queue 1621. Compared 578646 event pairs, 1138 based on Foata normal form. 332/33274 useless extension candidates. Maximal degree in co-relation 81525. Up to 3377 conditions per place. [2022-01-19 07:24:05,658 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 49 selfloop transitions, 17 changer transitions 3/476 dead transitions. [2022-01-19 07:24:05,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 476 transitions, 3270 flow [2022-01-19 07:24:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:24:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:24:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1514 transitions. [2022-01-19 07:24:05,660 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9120481927710843 [2022-01-19 07:24:05,660 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1514 transitions. [2022-01-19 07:24:05,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1514 transitions. [2022-01-19 07:24:05,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:05,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1514 transitions. [2022-01-19 07:24:05,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.8) internal successors, (1514), 5 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:05,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:05,665 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:05,665 INFO L186 Difference]: Start difference. First operand has 453 places, 464 transitions, 3094 flow. Second operand 5 states and 1514 transitions. [2022-01-19 07:24:05,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 476 transitions, 3270 flow [2022-01-19 07:24:06,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 476 transitions, 3259 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:24:06,259 INFO L242 Difference]: Finished difference. Result has 457 places, 464 transitions, 3131 flow [2022-01-19 07:24:06,259 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3131, PETRI_PLACES=457, PETRI_TRANSITIONS=464} [2022-01-19 07:24:06,261 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 163 predicate places. [2022-01-19 07:24:06,261 INFO L470 AbstractCegarLoop]: Abstraction has has 457 places, 464 transitions, 3131 flow [2022-01-19 07:24:06,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:06,261 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:24:06,261 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] [2022-01-19 07:24:06,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 07:24:06,261 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 07:24:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:24:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash -382432549, now seen corresponding path program 5 times [2022-01-19 07:24:06,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:24:06,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398167993] [2022-01-19 07:24:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:06,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:24:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:24:06,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:24:06,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398167993] [2022-01-19 07:24:06,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398167993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:24:06,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:24:06,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:24:06,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875740279] [2022-01-19 07:24:06,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:24:06,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:24:06,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:24:06,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:24:06,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:24:06,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:24:06,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 464 transitions, 3131 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:06,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:24:06,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:24:06,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:12,660 INFO L129 PetriNetUnfolder]: 4251/37857 cut-off events. [2022-01-19 07:24:12,660 INFO L130 PetriNetUnfolder]: For 108272/114015 co-relation queries the response was YES. [2022-01-19 07:24:13,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86727 conditions, 37857 events. 4251/37857 cut-off events. For 108272/114015 co-relation queries the response was YES. Maximal size of possible extension queue 1693. Compared 628848 event pairs, 1088 based on Foata normal form. 316/35595 useless extension candidates. Maximal degree in co-relation 86659. Up to 3838 conditions per place. [2022-01-19 07:24:13,195 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 51 selfloop transitions, 18 changer transitions 1/477 dead transitions. [2022-01-19 07:24:13,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 477 transitions, 3307 flow [2022-01-19 07:24:13,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:24:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:24:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1511 transitions. [2022-01-19 07:24:13,196 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9102409638554216 [2022-01-19 07:24:13,196 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1511 transitions. [2022-01-19 07:24:13,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1511 transitions. [2022-01-19 07:24:13,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:13,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1511 transitions. [2022-01-19 07:24:13,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.2) internal successors, (1511), 5 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:13,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:13,199 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:13,199 INFO L186 Difference]: Start difference. First operand has 457 places, 464 transitions, 3131 flow. Second operand 5 states and 1511 transitions. [2022-01-19 07:24:13,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 477 transitions, 3307 flow [2022-01-19 07:24:13,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 477 transitions, 3291 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 07:24:13,831 INFO L242 Difference]: Finished difference. Result has 461 places, 464 transitions, 3169 flow [2022-01-19 07:24:13,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3102, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3169, PETRI_PLACES=461, PETRI_TRANSITIONS=464} [2022-01-19 07:24:13,831 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 167 predicate places. [2022-01-19 07:24:13,831 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 464 transitions, 3169 flow [2022-01-19 07:24:13,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:13,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:24:13,837 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] [2022-01-19 07:24:13,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 07:24:13,837 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 07:24:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:24:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash 436964739, now seen corresponding path program 6 times [2022-01-19 07:24:13,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:24:13,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384717084] [2022-01-19 07:24:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:13,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:24:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:24:13,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:24:13,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384717084] [2022-01-19 07:24:13,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384717084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:24:13,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:24:13,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:24:13,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755305047] [2022-01-19 07:24:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:24:13,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:24:13,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:24:13,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:24:13,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:24:13,930 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:24:13,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 464 transitions, 3169 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:13,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:24:13,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:24:13,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:20,262 INFO L129 PetriNetUnfolder]: 4340/39043 cut-off events. [2022-01-19 07:24:20,262 INFO L130 PetriNetUnfolder]: For 113377/119074 co-relation queries the response was YES. [2022-01-19 07:24:20,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88863 conditions, 39043 events. 4340/39043 cut-off events. For 113377/119074 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 651881 event pairs, 1122 based on Foata normal form. 246/36653 useless extension candidates. Maximal degree in co-relation 88793. Up to 3958 conditions per place. [2022-01-19 07:24:20,928 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 50 selfloop transitions, 15 changer transitions 2/474 dead transitions. [2022-01-19 07:24:20,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 474 transitions, 3305 flow [2022-01-19 07:24:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:24:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:24:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1508 transitions. [2022-01-19 07:24:20,930 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.908433734939759 [2022-01-19 07:24:20,930 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1508 transitions. [2022-01-19 07:24:20,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1508 transitions. [2022-01-19 07:24:20,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:20,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1508 transitions. [2022-01-19 07:24:20,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.6) internal successors, (1508), 5 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:20,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:20,933 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:20,933 INFO L186 Difference]: Start difference. First operand has 461 places, 464 transitions, 3169 flow. Second operand 5 states and 1508 transitions. [2022-01-19 07:24:20,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 474 transitions, 3305 flow [2022-01-19 07:24:21,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 474 transitions, 3290 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 07:24:21,616 INFO L242 Difference]: Finished difference. Result has 462 places, 463 transitions, 3158 flow [2022-01-19 07:24:21,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3158, PETRI_PLACES=462, PETRI_TRANSITIONS=463} [2022-01-19 07:24:21,617 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 168 predicate places. [2022-01-19 07:24:21,617 INFO L470 AbstractCegarLoop]: Abstraction has has 462 places, 463 transitions, 3158 flow [2022-01-19 07:24:21,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:21,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:24:21,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:24:21,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 07:24:21,619 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 07:24:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:24:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2009014015, now seen corresponding path program 7 times [2022-01-19 07:24:21,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:24:21,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290816908] [2022-01-19 07:24:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:21,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:24:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:24:21,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:24:21,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290816908] [2022-01-19 07:24:21,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290816908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:24:21,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:24:21,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:24:21,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771112175] [2022-01-19 07:24:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:24:21,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:24:21,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:24:21,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:24:21,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:24:21,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:24:21,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 463 transitions, 3158 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:21,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:24:21,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:24:21,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:27,835 INFO L129 PetriNetUnfolder]: 4335/39038 cut-off events. [2022-01-19 07:24:27,835 INFO L130 PetriNetUnfolder]: For 110677/116374 co-relation queries the response was YES. [2022-01-19 07:24:28,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89206 conditions, 39038 events. 4335/39038 cut-off events. For 110677/116374 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 652008 event pairs, 1088 based on Foata normal form. 226/36628 useless extension candidates. Maximal degree in co-relation 89138. Up to 3958 conditions per place. [2022-01-19 07:24:28,397 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 50 selfloop transitions, 14 changer transitions 1/472 dead transitions. [2022-01-19 07:24:28,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 472 transitions, 3290 flow [2022-01-19 07:24:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:24:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:24:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1507 transitions. [2022-01-19 07:24:28,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9078313253012048 [2022-01-19 07:24:28,399 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1507 transitions. [2022-01-19 07:24:28,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1507 transitions. [2022-01-19 07:24:28,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:28,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1507 transitions. [2022-01-19 07:24:28,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:28,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:28,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:28,405 INFO L186 Difference]: Start difference. First operand has 462 places, 463 transitions, 3158 flow. Second operand 5 states and 1507 transitions. [2022-01-19 07:24:28,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 472 transitions, 3290 flow [2022-01-19 07:24:29,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 472 transitions, 3272 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:24:29,156 INFO L242 Difference]: Finished difference. Result has 464 places, 462 transitions, 3145 flow [2022-01-19 07:24:29,156 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3145, PETRI_PLACES=464, PETRI_TRANSITIONS=462} [2022-01-19 07:24:29,157 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 170 predicate places. [2022-01-19 07:24:29,157 INFO L470 AbstractCegarLoop]: Abstraction has has 464 places, 462 transitions, 3145 flow [2022-01-19 07:24:29,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:29,157 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:24:29,158 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] [2022-01-19 07:24:29,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 07:24:29,158 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 07:24:29,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:24:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash -557047913, now seen corresponding path program 8 times [2022-01-19 07:24:29,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:24:29,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432473951] [2022-01-19 07:24:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:29,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:24:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:24:29,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:24:29,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432473951] [2022-01-19 07:24:29,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432473951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:24:29,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:24:29,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:24:29,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182339076] [2022-01-19 07:24:29,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:24:29,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:24:29,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:24:29,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:24:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:24:29,421 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:24:29,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 462 transitions, 3145 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:29,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:24:29,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:24:29,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:35,796 INFO L129 PetriNetUnfolder]: 4275/37842 cut-off events. [2022-01-19 07:24:35,796 INFO L130 PetriNetUnfolder]: For 108272/113789 co-relation queries the response was YES. [2022-01-19 07:24:36,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86875 conditions, 37842 events. 4275/37842 cut-off events. For 108272/113789 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 627233 event pairs, 1055 based on Foata normal form. 221/35497 useless extension candidates. Maximal degree in co-relation 86807. Up to 3823 conditions per place. [2022-01-19 07:24:36,454 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 52 selfloop transitions, 11 changer transitions 3/473 dead transitions. [2022-01-19 07:24:36,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 473 transitions, 3286 flow [2022-01-19 07:24:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:24:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:24:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1507 transitions. [2022-01-19 07:24:36,455 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9078313253012048 [2022-01-19 07:24:36,455 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1507 transitions. [2022-01-19 07:24:36,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1507 transitions. [2022-01-19 07:24:36,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:36,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1507 transitions. [2022-01-19 07:24:36,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:36,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:36,458 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:36,458 INFO L186 Difference]: Start difference. First operand has 464 places, 462 transitions, 3145 flow. Second operand 5 states and 1507 transitions. [2022-01-19 07:24:36,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 473 transitions, 3286 flow [2022-01-19 07:24:37,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 473 transitions, 3268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:24:37,326 INFO L242 Difference]: Finished difference. Result has 466 places, 460 transitions, 3103 flow [2022-01-19 07:24:37,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3105, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3103, PETRI_PLACES=466, PETRI_TRANSITIONS=460} [2022-01-19 07:24:37,327 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 172 predicate places. [2022-01-19 07:24:37,327 INFO L470 AbstractCegarLoop]: Abstraction has has 466 places, 460 transitions, 3103 flow [2022-01-19 07:24:37,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:37,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:24:37,328 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] [2022-01-19 07:24:37,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 07:24:37,328 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 07:24:37,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:24:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1880426503, now seen corresponding path program 9 times [2022-01-19 07:24:37,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:24:37,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20603511] [2022-01-19 07:24:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:37,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:24:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:24:37,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:24:37,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20603511] [2022-01-19 07:24:37,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20603511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:24:37,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:24:37,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:24:37,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347697794] [2022-01-19 07:24:37,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:24:37,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:24:37,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:24:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:24:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:24:37,367 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 07:24:37,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 460 transitions, 3103 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:37,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:24:37,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 07:24:37,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:43,194 INFO L129 PetriNetUnfolder]: 4088/35536 cut-off events. [2022-01-19 07:24:43,195 INFO L130 PetriNetUnfolder]: For 103126/108523 co-relation queries the response was YES. [2022-01-19 07:24:43,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82246 conditions, 35536 events. 4088/35536 cut-off events. For 103126/108523 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 581724 event pairs, 1025 based on Foata normal form. 231/33336 useless extension candidates. Maximal degree in co-relation 82178. Up to 3598 conditions per place. [2022-01-19 07:24:43,772 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 47 selfloop transitions, 9 changer transitions 6/469 dead transitions. [2022-01-19 07:24:43,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 469 transitions, 3223 flow [2022-01-19 07:24:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:24:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:24:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1504 transitions. [2022-01-19 07:24:43,774 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9060240963855422 [2022-01-19 07:24:43,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1504 transitions. [2022-01-19 07:24:43,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1504 transitions. [2022-01-19 07:24:43,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:43,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1504 transitions. [2022-01-19 07:24:43,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:43,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:43,776 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:43,776 INFO L186 Difference]: Start difference. First operand has 466 places, 460 transitions, 3103 flow. Second operand 5 states and 1504 transitions. [2022-01-19 07:24:43,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 469 transitions, 3223 flow [2022-01-19 07:24:44,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 469 transitions, 3204 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 07:24:44,378 INFO L242 Difference]: Finished difference. Result has 467 places, 457 transitions, 3039 flow [2022-01-19 07:24:44,378 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3039, PETRI_PLACES=467, PETRI_TRANSITIONS=457} [2022-01-19 07:24:44,378 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 173 predicate places. [2022-01-19 07:24:44,378 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 457 transitions, 3039 flow [2022-01-19 07:24:44,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:44,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:24:44,379 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] [2022-01-19 07:24:44,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 07:24:44,379 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 07:24:44,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:24:44,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1033195849, now seen corresponding path program 1 times [2022-01-19 07:24:44,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:24:44,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989296969] [2022-01-19 07:24:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:44,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:24:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:44,505 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 07:24:44,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:24:44,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989296969] [2022-01-19 07:24:44,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989296969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:24:44,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36903722] [2022-01-19 07:24:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:44,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:24:44,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:24:44,516 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 07:24:44,517 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 07:24:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:44,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 07:24:44,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:24:45,148 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 07:24:45,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:24:45,854 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 07:24:45,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36903722] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:24:45,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:24:45,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 29 [2022-01-19 07:24:45,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021568512] [2022-01-19 07:24:45,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:24:45,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 07:24:45,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:24:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 07:24:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-01-19 07:24:45,856 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 332 [2022-01-19 07:24:45,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 457 transitions, 3039 flow. Second operand has 11 states, 11 states have (on average 260.72727272727275) internal successors, (2868), 11 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:45,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:24:45,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 332 [2022-01-19 07:24:45,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:57,224 INFO L129 PetriNetUnfolder]: 15587/67095 cut-off events. [2022-01-19 07:24:57,225 INFO L130 PetriNetUnfolder]: For 203830/213714 co-relation queries the response was YES. [2022-01-19 07:24:58,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152942 conditions, 67095 events. 15587/67095 cut-off events. For 203830/213714 co-relation queries the response was YES. Maximal size of possible extension queue 2973. Compared 1073132 event pairs, 4748 based on Foata normal form. 1571/59979 useless extension candidates. Maximal degree in co-relation 152874. Up to 7519 conditions per place. [2022-01-19 07:24:58,398 INFO L132 encePairwiseOnDemand]: 316/332 looper letters, 227 selfloop transitions, 28 changer transitions 1/548 dead transitions. [2022-01-19 07:24:58,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 548 transitions, 4464 flow [2022-01-19 07:24:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 07:24:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 07:24:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3693 transitions. [2022-01-19 07:24:58,415 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7945352839931153 [2022-01-19 07:24:58,415 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3693 transitions. [2022-01-19 07:24:58,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3693 transitions. [2022-01-19 07:24:58,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:58,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3693 transitions. [2022-01-19 07:24:58,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 263.7857142857143) internal successors, (3693), 14 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:58,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 332.0) internal successors, (4980), 15 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:58,422 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 332.0) internal successors, (4980), 15 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:58,422 INFO L186 Difference]: Start difference. First operand has 467 places, 457 transitions, 3039 flow. Second operand 14 states and 3693 transitions. [2022-01-19 07:24:58,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 548 transitions, 4464 flow [2022-01-19 07:24:59,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 548 transitions, 4424 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 07:24:59,580 INFO L242 Difference]: Finished difference. Result has 477 places, 461 transitions, 3077 flow [2022-01-19 07:24:59,581 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3077, PETRI_PLACES=477, PETRI_TRANSITIONS=461} [2022-01-19 07:24:59,581 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 183 predicate places. [2022-01-19 07:24:59,581 INFO L470 AbstractCegarLoop]: Abstraction has has 477 places, 461 transitions, 3077 flow [2022-01-19 07:24:59,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 260.72727272727275) internal successors, (2868), 11 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:59,582 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:24:59,582 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, 1, 1, 1, 1] [2022-01-19 07:24:59,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 07:24:59,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:24:59,799 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 07:24:59,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:24:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1328221634, now seen corresponding path program 1 times [2022-01-19 07:24:59,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:24:59,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029180790] [2022-01-19 07:24:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:59,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:24:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:24:59,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:24:59,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029180790] [2022-01-19 07:24:59,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029180790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:24:59,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:24:59,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:24:59,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561818237] [2022-01-19 07:24:59,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:24:59,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:24:59,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:24:59,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:24:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:24:59,903 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 332 [2022-01-19 07:24:59,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 461 transitions, 3077 flow. Second operand has 7 states, 7 states have (on average 267.85714285714283) internal successors, (1875), 7 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:59,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:24:59,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 332 [2022-01-19 07:24:59,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:25:07,747 INFO L129 PetriNetUnfolder]: 8485/41037 cut-off events. [2022-01-19 07:25:07,747 INFO L130 PetriNetUnfolder]: For 116834/124094 co-relation queries the response was YES. [2022-01-19 07:25:08,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93301 conditions, 41037 events. 8485/41037 cut-off events. For 116834/124094 co-relation queries the response was YES. Maximal size of possible extension queue 2363. Compared 653246 event pairs, 4702 based on Foata normal form. 405/36438 useless extension candidates. Maximal degree in co-relation 93232. Up to 9523 conditions per place. [2022-01-19 07:25:08,171 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 91 selfloop transitions, 11 changer transitions 66/485 dead transitions. [2022-01-19 07:25:08,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 485 transitions, 3517 flow [2022-01-19 07:25:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 07:25:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 07:25:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2169 transitions. [2022-01-19 07:25:08,173 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166415662650602 [2022-01-19 07:25:08,173 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2169 transitions. [2022-01-19 07:25:08,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2169 transitions. [2022-01-19 07:25:08,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:25:08,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2169 transitions. [2022-01-19 07:25:08,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 271.125) internal successors, (2169), 8 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:08,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:08,176 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:08,176 INFO L186 Difference]: Start difference. First operand has 477 places, 461 transitions, 3077 flow. Second operand 8 states and 2169 transitions. [2022-01-19 07:25:08,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 485 transitions, 3517 flow [2022-01-19 07:25:08,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 485 transitions, 3473 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-01-19 07:25:08,648 INFO L242 Difference]: Finished difference. Result has 473 places, 417 transitions, 2484 flow [2022-01-19 07:25:08,648 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3025, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2484, PETRI_PLACES=473, PETRI_TRANSITIONS=417} [2022-01-19 07:25:08,648 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 179 predicate places. [2022-01-19 07:25:08,648 INFO L470 AbstractCegarLoop]: Abstraction has has 473 places, 417 transitions, 2484 flow [2022-01-19 07:25:08,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.85714285714283) internal successors, (1875), 7 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:08,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:25:08,649 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:25:08,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 07:25:08,649 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 07:25:08,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:25:08,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1287650472, now seen corresponding path program 1 times [2022-01-19 07:25:08,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:25:08,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626508181] [2022-01-19 07:25:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:08,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:25:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:08,760 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 07:25:08,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:25:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626508181] [2022-01-19 07:25:08,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626508181] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:25:08,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514926254] [2022-01-19 07:25:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:08,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:25:08,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:25:08,762 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 07:25:08,763 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 07:25:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:08,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 07:25:08,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:25:09,290 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 07:25:09,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:25:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:25:09,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514926254] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:25:09,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:25:09,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-01-19 07:25:09,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781944000] [2022-01-19 07:25:09,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:25:09,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 07:25:09,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:25:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 07:25:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-19 07:25:09,798 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 332 [2022-01-19 07:25:09,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 417 transitions, 2484 flow. Second operand has 11 states, 11 states have (on average 260.8181818181818) internal successors, (2869), 11 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:09,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:25:09,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 332 [2022-01-19 07:25:09,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:25:16,816 INFO L129 PetriNetUnfolder]: 10249/39631 cut-off events. [2022-01-19 07:25:16,817 INFO L130 PetriNetUnfolder]: For 128507/133331 co-relation queries the response was YES. [2022-01-19 07:25:17,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98116 conditions, 39631 events. 10249/39631 cut-off events. For 128507/133331 co-relation queries the response was YES. Maximal size of possible extension queue 2230. Compared 585245 event pairs, 2142 based on Foata normal form. 2311/37523 useless extension candidates. Maximal degree in co-relation 98047. Up to 10620 conditions per place. [2022-01-19 07:25:17,216 INFO L132 encePairwiseOnDemand]: 316/332 looper letters, 116 selfloop transitions, 30 changer transitions 50/461 dead transitions. [2022-01-19 07:25:17,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 461 transitions, 3343 flow [2022-01-19 07:25:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 07:25:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 07:25:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3917 transitions. [2022-01-19 07:25:17,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7865461847389559 [2022-01-19 07:25:17,218 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3917 transitions. [2022-01-19 07:25:17,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3917 transitions. [2022-01-19 07:25:17,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:25:17,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3917 transitions. [2022-01-19 07:25:17,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 261.1333333333333) internal successors, (3917), 15 states have internal predecessors, (3917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:17,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:17,223 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:17,223 INFO L186 Difference]: Start difference. First operand has 473 places, 417 transitions, 2484 flow. Second operand 15 states and 3917 transitions. [2022-01-19 07:25:17,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 461 transitions, 3343 flow [2022-01-19 07:25:18,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 461 transitions, 3263 flow, removed 26 selfloop flow, removed 14 redundant places. [2022-01-19 07:25:18,056 INFO L242 Difference]: Finished difference. Result has 465 places, 385 transitions, 2111 flow [2022-01-19 07:25:18,056 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2111, PETRI_PLACES=465, PETRI_TRANSITIONS=385} [2022-01-19 07:25:18,057 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 171 predicate places. [2022-01-19 07:25:18,057 INFO L470 AbstractCegarLoop]: Abstraction has has 465 places, 385 transitions, 2111 flow [2022-01-19 07:25:18,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 260.8181818181818) internal successors, (2869), 11 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:18,057 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:25:18,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:25:18,073 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 07:25:18,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:25:18,271 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 07:25:18,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:25:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash -83746299, now seen corresponding path program 1 times [2022-01-19 07:25:18,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:25:18,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380586516] [2022-01-19 07:25:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:18,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:25:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 07:25:18,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:25:18,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380586516] [2022-01-19 07:25:18,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380586516] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:25:18,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792190003] [2022-01-19 07:25:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:18,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:25:18,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:25:18,443 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 07:25:18,444 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 07:25:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:18,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 07:25:18,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:25:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 07:25:19,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:25:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 07:25:19,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792190003] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:25:19,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:25:19,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 29 [2022-01-19 07:25:19,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035164526] [2022-01-19 07:25:19,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:25:19,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 07:25:19,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:25:19,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 07:25:19,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2022-01-19 07:25:19,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 332 [2022-01-19 07:25:19,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 385 transitions, 2111 flow. Second operand has 29 states, 29 states have (on average 226.93103448275863) internal successors, (6581), 29 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:19,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:25:19,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 332 [2022-01-19 07:25:19,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:25:37,539 INFO L129 PetriNetUnfolder]: 20539/94635 cut-off events. [2022-01-19 07:25:37,539 INFO L130 PetriNetUnfolder]: For 191236/205372 co-relation queries the response was YES. [2022-01-19 07:25:39,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205556 conditions, 94635 events. 20539/94635 cut-off events. For 191236/205372 co-relation queries the response was YES. Maximal size of possible extension queue 3933. Compared 1608855 event pairs, 7722 based on Foata normal form. 6037/93307 useless extension candidates. Maximal degree in co-relation 205494. Up to 11213 conditions per place. [2022-01-19 07:25:39,218 INFO L132 encePairwiseOnDemand]: 303/332 looper letters, 276 selfloop transitions, 83 changer transitions 25/619 dead transitions. [2022-01-19 07:25:39,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 619 transitions, 4809 flow [2022-01-19 07:25:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-19 07:25:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-01-19 07:25:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 7521 transitions. [2022-01-19 07:25:39,223 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6864731653888281 [2022-01-19 07:25:39,223 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 7521 transitions. [2022-01-19 07:25:39,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 7521 transitions. [2022-01-19 07:25:39,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:25:39,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 7521 transitions. [2022-01-19 07:25:39,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 227.9090909090909) internal successors, (7521), 33 states have internal predecessors, (7521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:39,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 332.0) internal successors, (11288), 34 states have internal predecessors, (11288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:39,243 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 332.0) internal successors, (11288), 34 states have internal predecessors, (11288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:39,243 INFO L186 Difference]: Start difference. First operand has 465 places, 385 transitions, 2111 flow. Second operand 33 states and 7521 transitions. [2022-01-19 07:25:39,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 619 transitions, 4809 flow [2022-01-19 07:25:40,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 619 transitions, 4724 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-01-19 07:25:40,984 INFO L242 Difference]: Finished difference. Result has 496 places, 422 transitions, 2612 flow [2022-01-19 07:25:40,984 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2612, PETRI_PLACES=496, PETRI_TRANSITIONS=422} [2022-01-19 07:25:40,985 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 202 predicate places. [2022-01-19 07:25:40,985 INFO L470 AbstractCegarLoop]: Abstraction has has 496 places, 422 transitions, 2612 flow [2022-01-19 07:25:40,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 226.93103448275863) internal successors, (6581), 29 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:40,985 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:25:40,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:25:41,001 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 07:25:41,199 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,SelfDestructingSolverStorable47 [2022-01-19 07:25:41,199 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 07:25:41,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:25:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash -608065967, now seen corresponding path program 1 times [2022-01-19 07:25:41,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:25:41,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452359359] [2022-01-19 07:25:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:41,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:25:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:25:42,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:25:42,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452359359] [2022-01-19 07:25:42,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452359359] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:25:42,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929870933] [2022-01-19 07:25:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:42,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:25:42,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:25:42,307 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 07:25:42,308 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 07:25:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:42,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-19 07:25:42,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:25:44,420 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 07:25:44,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-01-19 07:25:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 07:25:44,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:25:46,133 INFO L353 Elim1Store]: treesize reduction 50, result has 63.5 percent of original size [2022-01-19 07:25:46,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 104 [2022-01-19 07:25:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 07:25:46,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929870933] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:25:46,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:25:46,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 33, 19] total 84 [2022-01-19 07:25:46,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569549668] [2022-01-19 07:25:46,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:25:46,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-19 07:25:46,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:25:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-19 07:25:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=6515, Unknown=2, NotChecked=0, Total=6972 [2022-01-19 07:25:46,555 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 332 [2022-01-19 07:25:46,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 422 transitions, 2612 flow. Second operand has 84 states, 84 states have (on average 192.1904761904762) internal successors, (16144), 84 states have internal predecessors, (16144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:46,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:25:46,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 332 [2022-01-19 07:25:46,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand