/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 15:22:05,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 15:22:05,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 15:22:05,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-28 15:22:05,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 15:22:05,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 15:22:05,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 15:22:05,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 15:22:05,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 15:22:05,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 15:22:05,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 15:22:05,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 15:22:05,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 15:22:05,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 15:22:05,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 15:22:05,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 15:22:05,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 15:22:05,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 15:22:05,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 15:22:05,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 15:22:05,555 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 15:22:05,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 15:22:05,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 15:22:05,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 15:22:05,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 15:22:05,597 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 15:22:05,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 15:22:05,598 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 15:22:05,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 15:22:05,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 15:22:05,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 15:22:05,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 15:22:05,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 15:22:05,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 15:22:05,600 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 15:22:05,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 15:22:05,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 15:22:05,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 15:22:05,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 15:22:05,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 15:22:05,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 15:22:05,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 15:22:05,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 15:22:05,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 15:22:05,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 15:22:05,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 15:22:05,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 15:22:05,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 15:22:05,604 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 15:22:05,604 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 15:22:05,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 15:22:05,604 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 15:22:06,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 15:22:06,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 15:22:06,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 15:22:06,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 15:22:06,072 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 15:22:06,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2021-04-28 15:22:06,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32bac2e39/0025c3b336a74650b83efbf1b8b19aeb/FLAG48404d09f [2021-04-28 15:22:06,833 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 15:22:06,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2021-04-28 15:22:06,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32bac2e39/0025c3b336a74650b83efbf1b8b19aeb/FLAG48404d09f [2021-04-28 15:22:07,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32bac2e39/0025c3b336a74650b83efbf1b8b19aeb [2021-04-28 15:22:07,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 15:22:07,132 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 15:22:07,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 15:22:07,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 15:22:07,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 15:22:07,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:07,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247d2c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07, skipping insertion in model container [2021-04-28 15:22:07,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:07,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 15:22:07,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 15:22:07,497 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-04-28 15:22:07,718 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2021-04-28 15:22:07,737 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2021-04-28 15:22:07,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 15:22:07,758 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 15:22:07,789 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-04-28 15:22:07,836 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2021-04-28 15:22:07,844 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2021-04-28 15:22:07,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 15:22:07,968 INFO L208 MainTranslator]: Completed translation [2021-04-28 15:22:07,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07 WrapperNode [2021-04-28 15:22:07,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 15:22:07,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 15:22:07,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 15:22:07,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 15:22:07,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:08,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:08,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 15:22:08,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 15:22:08,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 15:22:08,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 15:22:08,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:08,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:08,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:08,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:08,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:08,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:08,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... [2021-04-28 15:22:08,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 15:22:08,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 15:22:08,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 15:22:08,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 15:22:08,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 15:22:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-28 15:22:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-04-28 15:22:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-04-28 15:22:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-04-28 15:22:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-04-28 15:22:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 15:22:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 15:22:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 15:22:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 15:22:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 15:22:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 15:22:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 15:22:08,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 15:22:08,255 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 15:22:08,703 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 15:22:08,704 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-04-28 15:22:08,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:22:08 BoogieIcfgContainer [2021-04-28 15:22:08,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 15:22:08,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 15:22:08,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 15:22:08,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 15:22:08,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 03:22:07" (1/3) ... [2021-04-28 15:22:08,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308ddc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:22:08, skipping insertion in model container [2021-04-28 15:22:08,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:22:07" (2/3) ... [2021-04-28 15:22:08,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308ddc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:22:08, skipping insertion in model container [2021-04-28 15:22:08,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:22:08" (3/3) ... [2021-04-28 15:22:08,714 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2021-04-28 15:22:08,721 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 15:22:08,726 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-04-28 15:22:08,727 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 15:22:08,757 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,758 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,758 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,758 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,758 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,759 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,759 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,759 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,759 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,760 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,760 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,760 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,760 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,780 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,781 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,781 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:22:08,789 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-04-28 15:22:08,812 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-04-28 15:22:08,838 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 15:22:08,838 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 15:22:08,838 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 15:22:08,838 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 15:22:08,839 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 15:22:08,839 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 15:22:08,839 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 15:22:08,839 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 15:22:08,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 170 flow [2021-04-28 15:22:08,894 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2021-04-28 15:22:08,894 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-28 15:22:08,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 74 events. 7/74 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2021-04-28 15:22:08,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 74 transitions, 170 flow [2021-04-28 15:22:08,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 62 transitions, 136 flow [2021-04-28 15:22:08,907 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:22:08,923 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 62 transitions, 136 flow [2021-04-28 15:22:08,927 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 62 transitions, 136 flow [2021-04-28 15:22:08,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 62 transitions, 136 flow [2021-04-28 15:22:08,951 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2021-04-28 15:22:08,951 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-28 15:22:08,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 6/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-04-28 15:22:08,956 INFO L146 LiptonReduction]: Number of co-enabled transitions 1116 [2021-04-28 15:22:13,889 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2021-04-28 15:22:14,168 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2021-04-28 15:22:14,448 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-04-28 15:22:14,735 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-04-28 15:22:14,968 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 15:22:15,184 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 15:22:16,657 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 15:22:16,760 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 15:22:16,881 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 15:22:16,999 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 15:22:17,356 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-28 15:22:17,464 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-28 15:22:17,588 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-28 15:22:17,691 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-28 15:22:18,337 INFO L158 LiptonReduction]: Checked pairs total: 5043 [2021-04-28 15:22:18,337 INFO L160 LiptonReduction]: Total number of compositions: 81 [2021-04-28 15:22:18,341 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9436 [2021-04-28 15:22:18,359 INFO L129 PetriNetUnfolder]: 2/50 cut-off events. [2021-04-28 15:22:18,359 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:22:18,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:22:18,360 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:22:18,361 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:22:18,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:22:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1697840670, now seen corresponding path program 1 times [2021-04-28 15:22:18,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:22:18,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229122635] [2021-04-28 15:22:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:22:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:22:18,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:18,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:22:18,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:18,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:22:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:22:18,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229122635] [2021-04-28 15:22:18,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:22:18,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 15:22:18,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778480597] [2021-04-28 15:22:18,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 15:22:18,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:22:18,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 15:22:18,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 15:22:18,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 155 [2021-04-28 15:22:18,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:18,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:22:18,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 155 [2021-04-28 15:22:18,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:22:18,718 INFO L129 PetriNetUnfolder]: 14/203 cut-off events. [2021-04-28 15:22:18,719 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-04-28 15:22:18,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 203 events. 14/203 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1406 event pairs, 4 based on Foata normal form. 7/86 useless extension candidates. Maximal degree in co-relation 250. Up to 47 conditions per place. [2021-04-28 15:22:18,722 INFO L132 encePairwiseOnDemand]: 135/155 looper letters, 9 selfloop transitions, 9 changer transitions 23/77 dead transitions. [2021-04-28 15:22:18,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 218 flow [2021-04-28 15:22:18,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 15:22:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 15:22:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2021-04-28 15:22:18,739 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7505376344086021 [2021-04-28 15:22:18,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2021-04-28 15:22:18,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2021-04-28 15:22:18,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:22:18,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2021-04-28 15:22:18,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:18,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:18,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:18,759 INFO L185 Difference]: Start difference. First operand has 75 places, 73 transitions, 158 flow. Second operand 3 states and 349 transitions. [2021-04-28 15:22:18,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 218 flow [2021-04-28 15:22:18,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-04-28 15:22:18,766 INFO L241 Difference]: Finished difference. Result has 75 places, 53 transitions, 158 flow [2021-04-28 15:22:18,769 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2021-04-28 15:22:18,770 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2021-04-28 15:22:18,770 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:22:18,770 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 53 transitions, 158 flow [2021-04-28 15:22:18,771 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 53 transitions, 158 flow [2021-04-28 15:22:18,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 158 flow [2021-04-28 15:22:18,787 INFO L129 PetriNetUnfolder]: 2/145 cut-off events. [2021-04-28 15:22:18,787 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-04-28 15:22:18,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 145 events. 2/145 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1035 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 192. Up to 29 conditions per place. [2021-04-28 15:22:18,791 INFO L146 LiptonReduction]: Number of co-enabled transitions 1132 [2021-04-28 15:22:18,802 INFO L158 LiptonReduction]: Checked pairs total: 392 [2021-04-28 15:22:18,802 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:22:18,802 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-04-28 15:22:18,804 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 158 flow [2021-04-28 15:22:18,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:18,805 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:22:18,805 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:22:18,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 15:22:18,806 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:22:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:22:18,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2006192531, now seen corresponding path program 1 times [2021-04-28 15:22:18,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:22:18,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472680011] [2021-04-28 15:22:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:22:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:22:18,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:18,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:22:18,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:18,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-28 15:22:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:22:18,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472680011] [2021-04-28 15:22:18,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:22:18,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 15:22:18,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045865876] [2021-04-28 15:22:18,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 15:22:18,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:22:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 15:22:18,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 15:22:18,889 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 155 [2021-04-28 15:22:18,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:18,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:22:18,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 155 [2021-04-28 15:22:18,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:22:18,949 INFO L129 PetriNetUnfolder]: 2/143 cut-off events. [2021-04-28 15:22:18,949 INFO L130 PetriNetUnfolder]: For 16/36 co-relation queries the response was YES. [2021-04-28 15:22:18,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 143 events. 2/143 cut-off events. For 16/36 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1010 event pairs, 0 based on Foata normal form. 7/68 useless extension candidates. Maximal degree in co-relation 246. Up to 30 conditions per place. [2021-04-28 15:22:18,952 INFO L132 encePairwiseOnDemand]: 145/155 looper letters, 7 selfloop transitions, 8 changer transitions 2/53 dead transitions. [2021-04-28 15:22:18,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 192 flow [2021-04-28 15:22:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 15:22:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 15:22:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2021-04-28 15:22:18,960 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7247311827956989 [2021-04-28 15:22:18,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2021-04-28 15:22:18,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2021-04-28 15:22:18,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:22:18,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2021-04-28 15:22:18,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:18,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:18,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:18,968 INFO L185 Difference]: Start difference. First operand has 53 places, 53 transitions, 158 flow. Second operand 3 states and 337 transitions. [2021-04-28 15:22:18,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 192 flow [2021-04-28 15:22:18,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 15:22:18,974 INFO L241 Difference]: Finished difference. Result has 54 places, 51 transitions, 160 flow [2021-04-28 15:22:18,974 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2021-04-28 15:22:18,975 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2021-04-28 15:22:18,976 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:22:18,979 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 51 transitions, 160 flow [2021-04-28 15:22:18,981 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 51 transitions, 160 flow [2021-04-28 15:22:18,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 51 transitions, 160 flow [2021-04-28 15:22:18,995 INFO L129 PetriNetUnfolder]: 2/135 cut-off events. [2021-04-28 15:22:18,996 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-04-28 15:22:18,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 135 events. 2/135 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 922 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 198. Up to 25 conditions per place. [2021-04-28 15:22:18,998 INFO L146 LiptonReduction]: Number of co-enabled transitions 1036 [2021-04-28 15:22:19,007 INFO L158 LiptonReduction]: Checked pairs total: 376 [2021-04-28 15:22:19,008 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:22:19,008 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-04-28 15:22:19,010 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 160 flow [2021-04-28 15:22:19,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:22:19,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:22:19,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 15:22:19,011 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:22:19,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:22:19,012 INFO L82 PathProgramCache]: Analyzing trace with hash 444697524, now seen corresponding path program 1 times [2021-04-28 15:22:19,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:22:19,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564922013] [2021-04-28 15:22:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:22:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:22:19,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:22:19,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:22:19,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 15:22:19,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 15:22:19,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 15:22:19,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:22:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:22:19,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564922013] [2021-04-28 15:22:19,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:22:19,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-28 15:22:19,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396680998] [2021-04-28 15:22:19,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-28 15:22:19,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:22:19,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-28 15:22:19,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-04-28 15:22:19,105 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 155 [2021-04-28 15:22:19,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:22:19,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 155 [2021-04-28 15:22:19,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:22:19,371 INFO L129 PetriNetUnfolder]: 138/512 cut-off events. [2021-04-28 15:22:19,371 INFO L130 PetriNetUnfolder]: For 151/151 co-relation queries the response was YES. [2021-04-28 15:22:19,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 512 events. 138/512 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 3767 event pairs, 21 based on Foata normal form. 15/297 useless extension candidates. Maximal degree in co-relation 879. Up to 110 conditions per place. [2021-04-28 15:22:19,374 INFO L132 encePairwiseOnDemand]: 139/155 looper letters, 25 selfloop transitions, 12 changer transitions 39/104 dead transitions. [2021-04-28 15:22:19,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 435 flow [2021-04-28 15:22:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-28 15:22:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-04-28 15:22:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1012 transitions. [2021-04-28 15:22:19,379 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6529032258064517 [2021-04-28 15:22:19,379 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1012 transitions. [2021-04-28 15:22:19,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1012 transitions. [2021-04-28 15:22:19,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:22:19,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1012 transitions. [2021-04-28 15:22:19,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 101.2) internal successors, (1012), 10 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,389 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,389 INFO L185 Difference]: Start difference. First operand has 52 places, 51 transitions, 160 flow. Second operand 10 states and 1012 transitions. [2021-04-28 15:22:19,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 435 flow [2021-04-28 15:22:19,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 15:22:19,396 INFO L241 Difference]: Finished difference. Result has 68 places, 55 transitions, 258 flow [2021-04-28 15:22:19,396 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=258, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2021-04-28 15:22:19,396 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2021-04-28 15:22:19,396 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:22:19,397 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 55 transitions, 258 flow [2021-04-28 15:22:19,397 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 55 transitions, 258 flow [2021-04-28 15:22:19,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 258 flow [2021-04-28 15:22:19,424 INFO L129 PetriNetUnfolder]: 56/280 cut-off events. [2021-04-28 15:22:19,424 INFO L130 PetriNetUnfolder]: For 204/216 co-relation queries the response was YES. [2021-04-28 15:22:19,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 280 events. 56/280 cut-off events. For 204/216 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1962 event pairs, 6 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 715. Up to 57 conditions per place. [2021-04-28 15:22:19,430 INFO L146 LiptonReduction]: Number of co-enabled transitions 932 [2021-04-28 15:22:19,451 INFO L158 LiptonReduction]: Checked pairs total: 164 [2021-04-28 15:22:19,451 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:22:19,451 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55 [2021-04-28 15:22:19,453 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 258 flow [2021-04-28 15:22:19,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,454 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:22:19,454 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:22:19,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 15:22:19,455 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:22:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:22:19,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1990270833, now seen corresponding path program 1 times [2021-04-28 15:22:19,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:22:19,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519480701] [2021-04-28 15:22:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:22:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:22:19,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:22:19,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:22:19,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 15:22:19,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 15:22:19,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 15:22:19,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:22:19,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:22:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:22:19,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519480701] [2021-04-28 15:22:19,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:22:19,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-28 15:22:19,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788714395] [2021-04-28 15:22:19,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-28 15:22:19,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:22:19,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-28 15:22:19,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-04-28 15:22:19,530 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 155 [2021-04-28 15:22:19,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:22:19,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 155 [2021-04-28 15:22:19,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:22:19,766 INFO L129 PetriNetUnfolder]: 118/384 cut-off events. [2021-04-28 15:22:19,766 INFO L130 PetriNetUnfolder]: For 328/428 co-relation queries the response was YES. [2021-04-28 15:22:19,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 384 events. 118/384 cut-off events. For 328/428 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2354 event pairs, 0 based on Foata normal form. 17/288 useless extension candidates. Maximal degree in co-relation 1059. Up to 89 conditions per place. [2021-04-28 15:22:19,769 INFO L132 encePairwiseOnDemand]: 139/155 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2021-04-28 15:22:19,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 102 transitions, 580 flow [2021-04-28 15:22:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-28 15:22:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-04-28 15:22:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1040 transitions. [2021-04-28 15:22:19,773 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6709677419354839 [2021-04-28 15:22:19,773 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1040 transitions. [2021-04-28 15:22:19,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1040 transitions. [2021-04-28 15:22:19,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:22:19,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1040 transitions. [2021-04-28 15:22:19,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,783 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,783 INFO L185 Difference]: Start difference. First operand has 60 places, 55 transitions, 258 flow. Second operand 10 states and 1040 transitions. [2021-04-28 15:22:19,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 102 transitions, 580 flow [2021-04-28 15:22:19,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 102 transitions, 521 flow, removed 19 selfloop flow, removed 6 redundant places. [2021-04-28 15:22:19,792 INFO L241 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2021-04-28 15:22:19,792 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2021-04-28 15:22:19,792 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2021-04-28 15:22:19,792 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:22:19,792 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 0 transitions, 0 flow [2021-04-28 15:22:19,793 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 0 transitions, 0 flow [2021-04-28 15:22:19,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-28 15:22:19,793 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-28 15:22:19,793 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:22:19,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-28 15:22:19,793 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 15:22:19,794 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 15:22:19,794 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:22:19,794 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-28 15:22:19,795 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-28 15:22:19,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:22:19,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 15:22:19,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 03:22:19 BasicIcfg [2021-04-28 15:22:19,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 15:22:19,802 INFO L168 Benchmark]: Toolchain (without parser) took 12716.83 ms. Allocated memory was 327.2 MB in the beginning and 474.0 MB in the end (delta: 146.8 MB). Free memory was 301.6 MB in the beginning and 183.5 MB in the end (delta: 118.1 MB). Peak memory consumption was 267.0 MB. Max. memory is 16.0 GB. [2021-04-28 15:22:19,803 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 327.2 MB. Free memory is still 296.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 15:22:19,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 832.13 ms. Allocated memory is still 327.2 MB. Free memory was 298.3 MB in the beginning and 268.4 MB in the end (delta: 30.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-04-28 15:22:19,804 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.87 ms. Allocated memory is still 327.2 MB. Free memory was 268.4 MB in the beginning and 308.5 MB in the end (delta: -40.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2021-04-28 15:22:19,805 INFO L168 Benchmark]: Boogie Preprocessor took 60.96 ms. Allocated memory is still 327.2 MB. Free memory was 308.5 MB in the beginning and 307.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 15:22:19,805 INFO L168 Benchmark]: RCFGBuilder took 576.77 ms. Allocated memory is still 327.2 MB. Free memory was 307.5 MB in the beginning and 285.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-28 15:22:19,806 INFO L168 Benchmark]: TraceAbstraction took 11093.17 ms. Allocated memory was 327.2 MB in the beginning and 474.0 MB in the end (delta: 146.8 MB). Free memory was 285.4 MB in the beginning and 183.5 MB in the end (delta: 101.9 MB). Peak memory consumption was 249.8 MB. Max. memory is 16.0 GB. [2021-04-28 15:22:19,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 327.2 MB. Free memory is still 296.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 832.13 ms. Allocated memory is still 327.2 MB. Free memory was 298.3 MB in the beginning and 268.4 MB in the end (delta: 30.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 96.87 ms. Allocated memory is still 327.2 MB. Free memory was 268.4 MB in the beginning and 308.5 MB in the end (delta: -40.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 60.96 ms. Allocated memory is still 327.2 MB. Free memory was 308.5 MB in the beginning and 307.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 576.77 ms. Allocated memory is still 327.2 MB. Free memory was 307.5 MB in the beginning and 285.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 11093.17 ms. Allocated memory was 327.2 MB in the beginning and 474.0 MB in the end (delta: 146.8 MB). Free memory was 285.4 MB in the beginning and 183.5 MB in the end (delta: 101.9 MB). Peak memory consumption was 249.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9410.1ms, 62 PlacesBefore, 75 PlacesAfterwards, 62 TransitionsBefore, 73 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 5043 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2030, positive: 1864, positive conditional: 1864, positive unconditional: 0, negative: 166, negative conditional: 166, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 774, positive: 739, positive conditional: 0, positive unconditional: 739, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 774, positive: 739, positive conditional: 0, positive unconditional: 739, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 774, positive: 733, positive conditional: 0, positive unconditional: 733, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 163, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 144, negative conditional: 0, negative unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2030, positive: 1125, positive conditional: 1125, positive unconditional: 0, negative: 131, negative conditional: 131, negative unconditional: 0, unknown: 774, unknown conditional: 774, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 744, Positive cache size: 709, Positive conditional cache size: 709, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.7ms, 75 PlacesBefore, 53 PlacesAfterwards, 53 TransitionsBefore, 53 TransitionsAfterwards, 1132 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 392 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 147, positive: 131, positive conditional: 131, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 39, positive: 39, positive conditional: 20, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 39, positive: 39, positive conditional: 20, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 39, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 147, positive: 92, positive conditional: 92, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 39, unknown conditional: 39, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 783, Positive cache size: 748, Positive conditional cache size: 748, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.2ms, 54 PlacesBefore, 52 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 1036 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 376 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 129, positive: 113, positive conditional: 113, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 129, positive: 101, positive conditional: 101, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 12, unknown conditional: 12, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 795, Positive cache size: 760, Positive conditional cache size: 760, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.2ms, 68 PlacesBefore, 60 PlacesAfterwards, 55 TransitionsBefore, 55 TransitionsAfterwards, 932 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 164 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 52, positive: 45, positive conditional: 45, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 23, positive conditional: 7, positive unconditional: 16, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 25, positive: 23, positive conditional: 7, positive unconditional: 16, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 52, positive: 22, positive conditional: 22, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 25, unknown conditional: 25, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 820, Positive cache size: 783, Positive conditional cache size: 783, Positive unconditional cache size: 0, Negative cache size: 37, Negative conditional cache size: 37, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 61 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 820, Positive cache size: 783, Positive conditional cache size: 783, Positive unconditional cache size: 0, Negative cache size: 37, Negative conditional cache size: 37, Negative unconditional cache size: 0 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 67 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 10964.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 810.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9510.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 122 SDtfs, 79 SDslu, 89 SDs, 0 SdLazy, 249 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 290.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 127.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.1ms SsaConstructionTime, 63.4ms SatisfiabilityAnalysisTime, 266.1ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...