/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 10:36:31,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 10:36:31,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 10:36:31,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 10:36:31,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 10:36:31,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 10:36:31,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 10:36:31,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 10:36:31,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 10:36:31,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 10:36:31,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 10:36:31,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 10:36:31,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 10:36:31,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 10:36:31,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 10:36:31,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 10:36:31,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 10:36:31,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 10:36:31,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 10:36:31,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 10:36:31,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 10:36:31,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 10:36:31,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 10:36:31,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 10:36:31,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 10:36:31,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 10:36:31,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 10:36:31,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 10:36:31,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 10:36:31,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 10:36:31,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 10:36:31,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 10:36:31,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 10:36:31,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 10:36:31,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 10:36:31,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 10:36:31,883 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 10:36:31,906 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 10:36:31,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 10:36:31,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 10:36:31,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 10:36:31,907 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 10:36:31,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 10:36:31,908 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 10:36:31,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 10:36:31,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 10:36:31,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 10:36:31,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 10:36:31,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 10:36:31,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 10:36:31,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 10:36:31,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 10:36:31,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 10:36:31,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 10:36:31,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 10:36:31,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 10:36:31,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 10:36:31,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 10:36:31,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 10:36:31,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 10:36:31,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 10:36:31,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 10:36:31,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 10:36:31,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 10:36:31,910 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 10:36:31,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 10:36:31,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 10:36:31,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 10:36:32,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 10:36:32,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 10:36:32,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 10:36:32,238 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 10:36:32,238 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 10:36:32,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-03-26 10:36:32,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804f9db43/b9f904e6d7f245a8973de7c16e0d548e/FLAG355cc5894 [2021-03-26 10:36:32,831 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 10:36:32,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-03-26 10:36:32,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804f9db43/b9f904e6d7f245a8973de7c16e0d548e/FLAG355cc5894 [2021-03-26 10:36:33,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804f9db43/b9f904e6d7f245a8973de7c16e0d548e [2021-03-26 10:36:33,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 10:36:33,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 10:36:33,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 10:36:33,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 10:36:33,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 10:36:33,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ceee96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33, skipping insertion in model container [2021-03-26 10:36:33,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 10:36:33,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 10:36:33,505 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-wmm/safe020_pso.oepc.i[950,963] [2021-03-26 10:36:33,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:36:33,664 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 10:36:33,675 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-wmm/safe020_pso.oepc.i[950,963] [2021-03-26 10:36:33,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:36:33,792 INFO L208 MainTranslator]: Completed translation [2021-03-26 10:36:33,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33 WrapperNode [2021-03-26 10:36:33,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 10:36:33,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 10:36:33,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 10:36:33,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 10:36:33,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 10:36:33,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 10:36:33,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 10:36:33,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 10:36:33,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (1/1) ... [2021-03-26 10:36:33,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 10:36:33,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 10:36:33,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 10:36:33,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 10:36:33,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (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 [2021-03-26 10:36:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 10:36:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 10:36:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 10:36:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 10:36:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 10:36:33,953 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 10:36:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 10:36:33,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 10:36:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 10:36:33,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 10:36:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 10:36:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 10:36:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 10:36:33,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 10:36:33,956 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 10:36:34,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 10:36:34,288 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 10:36:34,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:36:34 BoogieIcfgContainer [2021-03-26 10:36:34,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 10:36:34,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 10:36:34,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 10:36:34,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 10:36:34,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 10:36:33" (1/3) ... [2021-03-26 10:36:34,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b5b87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:36:34, skipping insertion in model container [2021-03-26 10:36:34,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:36:33" (2/3) ... [2021-03-26 10:36:34,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b5b87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:36:34, skipping insertion in model container [2021-03-26 10:36:34,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:36:34" (3/3) ... [2021-03-26 10:36:34,295 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2021-03-26 10:36:34,300 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 10:36:34,303 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 10:36:34,304 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 10:36:34,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,330 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,330 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,330 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,332 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,333 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,333 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,337 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,337 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,339 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,339 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,339 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,339 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:36:34,340 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 10:36:34,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 10:36:34,367 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 10:36:34,368 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 10:36:34,368 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 10:36:34,368 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 10:36:34,368 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 10:36:34,368 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 10:36:34,368 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 10:36:34,368 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 10:36:34,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-26 10:36:34,407 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-26 10:36:34,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:36:34,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-26 10:36:34,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-26 10:36:34,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-26 10:36:34,415 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:36:34,435 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-26 10:36:34,438 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-26 10:36:34,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-26 10:36:34,452 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-26 10:36:34,452 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:36:34,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-26 10:36:34,455 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-26 10:36:35,783 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-03-26 10:36:35,943 INFO L154 LiptonReduction]: Checked pairs total: 958 [2021-03-26 10:36:35,944 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 10:36:35,949 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1535 [2021-03-26 10:36:35,961 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-26 10:36:35,962 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:36:35,962 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:36:35,962 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:36:35,963 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:36:35,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:36:35,968 INFO L82 PathProgramCache]: Analyzing trace with hash 456015442, now seen corresponding path program 1 times [2021-03-26 10:36:35,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:36:35,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942463445] [2021-03-26 10:36:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:36:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:36:36,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:36,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:36,198 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:36:36,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:36:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:36:36,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942463445] [2021-03-26 10:36:36,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:36:36,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:36:36,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505393555] [2021-03-26 10:36:36,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:36:36,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:36:36,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:36:36,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:36:36,237 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2021-03-26 10:36:36,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:36,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:36:36,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2021-03-26 10:36:36,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:36:36,281 INFO L129 PetriNetUnfolder]: 8/48 cut-off events. [2021-03-26 10:36:36,281 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:36:36,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 48 events. 8/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 121 event pairs, 2 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 73. Up to 19 conditions per place. [2021-03-26 10:36:36,283 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 6 selfloop transitions, 5 changer transitions 0/24 dead transitions. [2021-03-26 10:36:36,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 79 flow [2021-03-26 10:36:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:36:36,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:36:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2021-03-26 10:36:36,299 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8490990990990991 [2021-03-26 10:36:36,300 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2021-03-26 10:36:36,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2021-03-26 10:36:36,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:36:36,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2021-03-26 10:36:36,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:36,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:36,318 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:36,320 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 4 states and 377 transitions. [2021-03-26 10:36:36,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 79 flow [2021-03-26 10:36:36,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 10:36:36,324 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 73 flow [2021-03-26 10:36:36,325 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2021-03-26 10:36:36,326 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-03-26 10:36:36,326 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:36:36,326 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 22 transitions, 73 flow [2021-03-26 10:36:36,327 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 22 transitions, 73 flow [2021-03-26 10:36:36,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 22 transitions, 73 flow [2021-03-26 10:36:36,339 INFO L129 PetriNetUnfolder]: 6/45 cut-off events. [2021-03-26 10:36:36,339 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 10:36:36,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 45 events. 6/45 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 124 event pairs, 4 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 76. Up to 16 conditions per place. [2021-03-26 10:36:36,341 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-26 10:36:36,649 INFO L154 LiptonReduction]: Checked pairs total: 119 [2021-03-26 10:36:36,649 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 10:36:36,650 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 324 [2021-03-26 10:36:36,651 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 67 flow [2021-03-26 10:36:36,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:36,651 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:36:36,651 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:36:36,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 10:36:36,651 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:36:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:36:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1251576527, now seen corresponding path program 1 times [2021-03-26 10:36:36,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:36:36,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187469244] [2021-03-26 10:36:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:36:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:36:36,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:36,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:36:36,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:36,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:36,730 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:36:36,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:36:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:36:36,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187469244] [2021-03-26 10:36:36,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:36:36,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:36:36,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498199202] [2021-03-26 10:36:36,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:36:36,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:36:36,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:36:36,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:36:36,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2021-03-26 10:36:36,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:36,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:36:36,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2021-03-26 10:36:36,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:36:36,805 INFO L129 PetriNetUnfolder]: 35/109 cut-off events. [2021-03-26 10:36:36,806 INFO L130 PetriNetUnfolder]: For 78/98 co-relation queries the response was YES. [2021-03-26 10:36:36,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 109 events. 35/109 cut-off events. For 78/98 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 446 event pairs, 2 based on Foata normal form. 9/117 useless extension candidates. Maximal degree in co-relation 263. Up to 35 conditions per place. [2021-03-26 10:36:36,809 INFO L132 encePairwiseOnDemand]: 107/114 looper letters, 9 selfloop transitions, 15 changer transitions 0/34 dead transitions. [2021-03-26 10:36:36,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 183 flow [2021-03-26 10:36:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:36:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:36:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2021-03-26 10:36:36,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8017543859649123 [2021-03-26 10:36:36,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2021-03-26 10:36:36,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2021-03-26 10:36:36,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:36:36,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2021-03-26 10:36:36,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:36,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:36,815 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:36,815 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 67 flow. Second operand 5 states and 457 transitions. [2021-03-26 10:36:36,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 183 flow [2021-03-26 10:36:36,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 165 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 10:36:36,817 INFO L241 Difference]: Finished difference. Result has 35 places, 30 transitions, 178 flow [2021-03-26 10:36:36,817 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2021-03-26 10:36:36,818 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-26 10:36:36,818 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:36:36,818 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 30 transitions, 178 flow [2021-03-26 10:36:36,818 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 30 transitions, 178 flow [2021-03-26 10:36:36,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 178 flow [2021-03-26 10:36:36,829 INFO L129 PetriNetUnfolder]: 22/93 cut-off events. [2021-03-26 10:36:36,829 INFO L130 PetriNetUnfolder]: For 81/100 co-relation queries the response was YES. [2021-03-26 10:36:36,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 93 events. 22/93 cut-off events. For 81/100 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 404 event pairs, 4 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 275. Up to 34 conditions per place. [2021-03-26 10:36:36,831 INFO L142 LiptonReduction]: Number of co-enabled transitions 148 [2021-03-26 10:36:36,981 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-26 10:36:37,184 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-26 10:36:37,252 INFO L154 LiptonReduction]: Checked pairs total: 196 [2021-03-26 10:36:37,253 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:36:37,253 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 435 [2021-03-26 10:36:37,254 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 176 flow [2021-03-26 10:36:37,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,254 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:36:37,254 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:36:37,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 10:36:37,254 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:36:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:36:37,255 INFO L82 PathProgramCache]: Analyzing trace with hash 792750374, now seen corresponding path program 1 times [2021-03-26 10:36:37,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:36:37,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790157897] [2021-03-26 10:36:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:36:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:36:37,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,294 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:36:37,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:36:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:36:37,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790157897] [2021-03-26 10:36:37,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:36:37,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:36:37,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595939465] [2021-03-26 10:36:37,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:36:37,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:36:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:36:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:36:37,303 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 115 [2021-03-26 10:36:37,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:36:37,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 115 [2021-03-26 10:36:37,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:36:37,356 INFO L129 PetriNetUnfolder]: 25/99 cut-off events. [2021-03-26 10:36:37,356 INFO L130 PetriNetUnfolder]: For 198/248 co-relation queries the response was YES. [2021-03-26 10:36:37,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 99 events. 25/99 cut-off events. For 198/248 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 440 event pairs, 2 based on Foata normal form. 12/110 useless extension candidates. Maximal degree in co-relation 355. Up to 32 conditions per place. [2021-03-26 10:36:37,357 INFO L132 encePairwiseOnDemand]: 108/115 looper letters, 7 selfloop transitions, 8 changer transitions 12/36 dead transitions. [2021-03-26 10:36:37,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 285 flow [2021-03-26 10:36:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:36:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:36:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-26 10:36:37,363 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878260869565218 [2021-03-26 10:36:37,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-26 10:36:37,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-26 10:36:37,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:36:37,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-26 10:36:37,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,366 INFO L185 Difference]: Start difference. First operand has 34 places, 29 transitions, 176 flow. Second operand 5 states and 453 transitions. [2021-03-26 10:36:37,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 285 flow [2021-03-26 10:36:37,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 10:36:37,369 INFO L241 Difference]: Finished difference. Result has 40 places, 22 transitions, 148 flow [2021-03-26 10:36:37,370 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2021-03-26 10:36:37,370 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-26 10:36:37,370 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:36:37,370 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 22 transitions, 148 flow [2021-03-26 10:36:37,370 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 22 transitions, 148 flow [2021-03-26 10:36:37,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 22 transitions, 148 flow [2021-03-26 10:36:37,375 INFO L129 PetriNetUnfolder]: 9/50 cut-off events. [2021-03-26 10:36:37,375 INFO L130 PetriNetUnfolder]: For 97/100 co-relation queries the response was YES. [2021-03-26 10:36:37,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 50 events. 9/50 cut-off events. For 97/100 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 163 event pairs, 4 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 173. Up to 20 conditions per place. [2021-03-26 10:36:37,376 INFO L142 LiptonReduction]: Number of co-enabled transitions 110 [2021-03-26 10:36:37,399 INFO L154 LiptonReduction]: Checked pairs total: 80 [2021-03-26 10:36:37,399 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:36:37,399 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-26 10:36:37,400 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 152 flow [2021-03-26 10:36:37,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:36:37,401 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:36:37,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 10:36:37,401 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:36:37,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:36:37,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2224087, now seen corresponding path program 1 times [2021-03-26 10:36:37,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:36:37,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508356085] [2021-03-26 10:36:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:36:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:36:37,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,452 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:36:37,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:36:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:36:37,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508356085] [2021-03-26 10:36:37,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:36:37,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:36:37,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970119639] [2021-03-26 10:36:37,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:36:37,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:36:37,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:36:37,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:36:37,465 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2021-03-26 10:36:37,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:36:37,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2021-03-26 10:36:37,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:36:37,481 INFO L129 PetriNetUnfolder]: 7/42 cut-off events. [2021-03-26 10:36:37,481 INFO L130 PetriNetUnfolder]: For 121/135 co-relation queries the response was YES. [2021-03-26 10:36:37,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 42 events. 7/42 cut-off events. For 121/135 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 1 based on Foata normal form. 3/44 useless extension candidates. Maximal degree in co-relation 173. Up to 16 conditions per place. [2021-03-26 10:36:37,482 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 3 selfloop transitions, 9 changer transitions 0/23 dead transitions. [2021-03-26 10:36:37,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 23 transitions, 186 flow [2021-03-26 10:36:37,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:36:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:36:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2021-03-26 10:36:37,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8168103448275862 [2021-03-26 10:36:37,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2021-03-26 10:36:37,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2021-03-26 10:36:37,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:36:37,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2021-03-26 10:36:37,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,486 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,486 INFO L185 Difference]: Start difference. First operand has 40 places, 22 transitions, 152 flow. Second operand 4 states and 379 transitions. [2021-03-26 10:36:37,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 23 transitions, 186 flow [2021-03-26 10:36:37,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 23 transitions, 146 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-26 10:36:37,489 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 147 flow [2021-03-26 10:36:37,489 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2021-03-26 10:36:37,489 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2021-03-26 10:36:37,489 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:36:37,490 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 23 transitions, 147 flow [2021-03-26 10:36:37,490 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 23 transitions, 147 flow [2021-03-26 10:36:37,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 23 transitions, 147 flow [2021-03-26 10:36:37,495 INFO L129 PetriNetUnfolder]: 7/43 cut-off events. [2021-03-26 10:36:37,495 INFO L130 PetriNetUnfolder]: For 59/65 co-relation queries the response was YES. [2021-03-26 10:36:37,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 43 events. 7/43 cut-off events. For 59/65 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 107 event pairs, 1 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 140. Up to 16 conditions per place. [2021-03-26 10:36:37,496 INFO L142 LiptonReduction]: Number of co-enabled transitions 114 [2021-03-26 10:36:37,518 INFO L154 LiptonReduction]: Checked pairs total: 139 [2021-03-26 10:36:37,518 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:36:37,518 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-26 10:36:37,519 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 148 flow [2021-03-26 10:36:37,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,519 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:36:37,519 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:36:37,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 10:36:37,520 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:36:37,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:36:37,520 INFO L82 PathProgramCache]: Analyzing trace with hash 68312801, now seen corresponding path program 1 times [2021-03-26 10:36:37,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:36:37,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876523919] [2021-03-26 10:36:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:36:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:36:37,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:36:37,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:36:37,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876523919] [2021-03-26 10:36:37,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:36:37,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:36:37,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889781001] [2021-03-26 10:36:37,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 10:36:37,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:36:37,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 10:36:37,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 10:36:37,557 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-26 10:36:37,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:36:37,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-26 10:36:37,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:36:37,575 INFO L129 PetriNetUnfolder]: 45/119 cut-off events. [2021-03-26 10:36:37,575 INFO L130 PetriNetUnfolder]: For 157/171 co-relation queries the response was YES. [2021-03-26 10:36:37,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 119 events. 45/119 cut-off events. For 157/171 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 504 event pairs, 16 based on Foata normal form. 3/114 useless extension candidates. Maximal degree in co-relation 342. Up to 77 conditions per place. [2021-03-26 10:36:37,576 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 4 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2021-03-26 10:36:37,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 170 flow [2021-03-26 10:36:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 10:36:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 10:36:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2021-03-26 10:36:37,585 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2021-03-26 10:36:37,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2021-03-26 10:36:37,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2021-03-26 10:36:37,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:36:37,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2021-03-26 10:36:37,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,587 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 148 flow. Second operand 3 states and 291 transitions. [2021-03-26 10:36:37,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 170 flow [2021-03-26 10:36:37,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 161 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-26 10:36:37,590 INFO L241 Difference]: Finished difference. Result has 39 places, 26 transitions, 165 flow [2021-03-26 10:36:37,590 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2021-03-26 10:36:37,591 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2021-03-26 10:36:37,591 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:36:37,591 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 26 transitions, 165 flow [2021-03-26 10:36:37,591 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 26 transitions, 165 flow [2021-03-26 10:36:37,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 26 transitions, 165 flow [2021-03-26 10:36:37,599 INFO L129 PetriNetUnfolder]: 45/122 cut-off events. [2021-03-26 10:36:37,600 INFO L130 PetriNetUnfolder]: For 177/195 co-relation queries the response was YES. [2021-03-26 10:36:37,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 122 events. 45/122 cut-off events. For 177/195 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 549 event pairs, 16 based on Foata normal form. 2/118 useless extension candidates. Maximal degree in co-relation 355. Up to 77 conditions per place. [2021-03-26 10:36:37,601 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-26 10:36:37,603 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:36:37,603 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:36:37,603 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 10:36:37,604 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 165 flow [2021-03-26 10:36:37,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,604 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:36:37,604 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:36:37,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 10:36:37,604 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:36:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:36:37,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2140771766, now seen corresponding path program 1 times [2021-03-26 10:36:37,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:36:37,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949743453] [2021-03-26 10:36:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:36:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:36:37,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:36:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:36:37,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949743453] [2021-03-26 10:36:37,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:36:37,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:36:37,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789998334] [2021-03-26 10:36:37,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:36:37,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:36:37,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:36:37,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:36:37,640 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-26 10:36:37,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:36:37,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-26 10:36:37,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:36:37,668 INFO L129 PetriNetUnfolder]: 23/76 cut-off events. [2021-03-26 10:36:37,669 INFO L130 PetriNetUnfolder]: For 115/151 co-relation queries the response was YES. [2021-03-26 10:36:37,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 76 events. 23/76 cut-off events. For 115/151 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 253 event pairs, 2 based on Foata normal form. 23/96 useless extension candidates. Maximal degree in co-relation 260. Up to 48 conditions per place. [2021-03-26 10:36:37,670 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 4 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2021-03-26 10:36:37,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 199 flow [2021-03-26 10:36:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:36:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:36:37,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2021-03-26 10:36:37,673 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2021-03-26 10:36:37,673 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2021-03-26 10:36:37,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2021-03-26 10:36:37,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:36:37,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2021-03-26 10:36:37,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 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) [2021-03-26 10:36:37,676 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 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) [2021-03-26 10:36:37,676 INFO L185 Difference]: Start difference. First operand has 39 places, 26 transitions, 165 flow. Second operand 4 states and 388 transitions. [2021-03-26 10:36:37,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 199 flow [2021-03-26 10:36:37,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 29 transitions, 179 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-26 10:36:37,680 INFO L241 Difference]: Finished difference. Result has 40 places, 29 transitions, 185 flow [2021-03-26 10:36:37,680 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2021-03-26 10:36:37,680 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-26 10:36:37,680 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:36:37,681 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 29 transitions, 185 flow [2021-03-26 10:36:37,681 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 29 transitions, 185 flow [2021-03-26 10:36:37,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 29 transitions, 185 flow [2021-03-26 10:36:37,687 INFO L129 PetriNetUnfolder]: 24/79 cut-off events. [2021-03-26 10:36:37,687 INFO L130 PetriNetUnfolder]: For 84/115 co-relation queries the response was YES. [2021-03-26 10:36:37,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 79 events. 24/79 cut-off events. For 84/115 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 278 event pairs, 3 based on Foata normal form. 6/82 useless extension candidates. Maximal degree in co-relation 258. Up to 49 conditions per place. [2021-03-26 10:36:37,688 INFO L142 LiptonReduction]: Number of co-enabled transitions 116 [2021-03-26 10:36:37,690 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:36:37,690 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:36:37,690 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 10:36:37,691 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 185 flow [2021-03-26 10:36:37,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,691 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:36:37,692 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:36:37,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 10:36:37,692 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:36:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:36:37,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1954369822, now seen corresponding path program 1 times [2021-03-26 10:36:37,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:36:37,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211021154] [2021-03-26 10:36:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:36:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:36:37,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:36:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:36:37,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211021154] [2021-03-26 10:36:37,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:36:37,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:36:37,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722452654] [2021-03-26 10:36:37,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:36:37,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:36:37,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:36:37,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:36:37,731 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-26 10:36:37,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:36:37,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-26 10:36:37,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:36:37,753 INFO L129 PetriNetUnfolder]: 16/55 cut-off events. [2021-03-26 10:36:37,753 INFO L130 PetriNetUnfolder]: For 111/175 co-relation queries the response was YES. [2021-03-26 10:36:37,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 55 events. 16/55 cut-off events. For 111/175 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 152 event pairs, 0 based on Foata normal form. 36/88 useless extension candidates. Maximal degree in co-relation 213. Up to 33 conditions per place. [2021-03-26 10:36:37,754 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 1 selfloop transitions, 10 changer transitions 0/29 dead transitions. [2021-03-26 10:36:37,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 29 transitions, 207 flow [2021-03-26 10:36:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:36:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:36:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 482 transitions. [2021-03-26 10:36:37,756 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8239316239316239 [2021-03-26 10:36:37,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 482 transitions. [2021-03-26 10:36:37,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 482 transitions. [2021-03-26 10:36:37,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:36:37,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 482 transitions. [2021-03-26 10:36:37,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,759 INFO L185 Difference]: Start difference. First operand has 40 places, 29 transitions, 185 flow. Second operand 5 states and 482 transitions. [2021-03-26 10:36:37,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 29 transitions, 207 flow [2021-03-26 10:36:37,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 180 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-26 10:36:37,761 INFO L241 Difference]: Finished difference. Result has 41 places, 29 transitions, 186 flow [2021-03-26 10:36:37,761 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2021-03-26 10:36:37,761 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2021-03-26 10:36:37,761 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:36:37,761 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 29 transitions, 186 flow [2021-03-26 10:36:37,761 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 29 transitions, 186 flow [2021-03-26 10:36:37,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 29 transitions, 186 flow [2021-03-26 10:36:37,766 INFO L129 PetriNetUnfolder]: 16/56 cut-off events. [2021-03-26 10:36:37,766 INFO L130 PetriNetUnfolder]: For 88/98 co-relation queries the response was YES. [2021-03-26 10:36:37,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 56 events. 16/56 cut-off events. For 88/98 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 181 event pairs, 0 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 178. Up to 25 conditions per place. [2021-03-26 10:36:37,767 INFO L142 LiptonReduction]: Number of co-enabled transitions 100 [2021-03-26 10:36:37,839 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:36:37,839 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:36:37,839 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-26 10:36:37,840 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 184 flow [2021-03-26 10:36:37,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,841 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:36:37,841 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:36:37,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 10:36:37,841 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:36:37,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:36:37,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1708901648, now seen corresponding path program 1 times [2021-03-26 10:36:37,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:36:37,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235389549] [2021-03-26 10:36:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:36:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:36:37,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:36:37,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:36:37,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:36:37,921 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:36:37,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:36:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:36:37,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235389549] [2021-03-26 10:36:37,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:36:37,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:36:37,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956629190] [2021-03-26 10:36:37,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:36:37,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:36:37,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:36:37,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:36:37,931 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 118 [2021-03-26 10:36:37,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:36:37,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 118 [2021-03-26 10:36:37,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:36:37,966 INFO L129 PetriNetUnfolder]: 18/59 cut-off events. [2021-03-26 10:36:37,966 INFO L130 PetriNetUnfolder]: For 167/210 co-relation queries the response was YES. [2021-03-26 10:36:37,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 59 events. 18/59 cut-off events. For 167/210 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 190 event pairs, 0 based on Foata normal form. 23/79 useless extension candidates. Maximal degree in co-relation 207. Up to 25 conditions per place. [2021-03-26 10:36:37,967 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2021-03-26 10:36:37,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 30 transitions, 225 flow [2021-03-26 10:36:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:36:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:36:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2021-03-26 10:36:37,969 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.764406779661017 [2021-03-26 10:36:37,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2021-03-26 10:36:37,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2021-03-26 10:36:37,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:36:37,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2021-03-26 10:36:37,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,972 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,972 INFO L185 Difference]: Start difference. First operand has 40 places, 28 transitions, 184 flow. Second operand 5 states and 451 transitions. [2021-03-26 10:36:37,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 30 transitions, 225 flow [2021-03-26 10:36:37,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 183 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-26 10:36:37,974 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-26 10:36:37,974 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-26 10:36:37,974 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2021-03-26 10:36:37,974 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:36:37,974 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-26 10:36:37,974 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-26 10:36:37,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 10:36:37,975 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 10:36:37,975 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:36:37,975 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. [2021-03-26 10:36:37,975 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 10:36:37,975 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:36:37,976 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:36:37,976 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 10:36:37,977 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 10:36:37,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:36:37,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 10:36:37,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 10:36:37 BasicIcfg [2021-03-26 10:36:37,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 10:36:37,981 INFO L168 Benchmark]: Toolchain (without parser) took 4692.84 ms. Allocated memory was 255.9 MB in the beginning and 434.1 MB in the end (delta: 178.3 MB). Free memory was 234.3 MB in the beginning and 399.4 MB in the end (delta: -165.1 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.0 GB. [2021-03-26 10:36:37,981 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:36:37,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.99 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.3 MB in the beginning and 322.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-26 10:36:37,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.77 ms. Allocated memory is still 360.7 MB. Free memory was 322.3 MB in the beginning and 320.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:36:37,988 INFO L168 Benchmark]: Boogie Preprocessor took 26.85 ms. Allocated memory is still 360.7 MB. Free memory was 320.7 MB in the beginning and 319.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:36:37,988 INFO L168 Benchmark]: RCFGBuilder took 414.84 ms. Allocated memory is still 360.7 MB. Free memory was 319.3 MB in the beginning and 297.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-26 10:36:37,988 INFO L168 Benchmark]: TraceAbstraction took 3689.42 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 297.2 MB in the beginning and 399.4 MB in the end (delta: -102.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:36:37,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 503.99 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.3 MB in the beginning and 322.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.77 ms. Allocated memory is still 360.7 MB. Free memory was 322.3 MB in the beginning and 320.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.85 ms. Allocated memory is still 360.7 MB. Free memory was 320.7 MB in the beginning and 319.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 414.84 ms. Allocated memory is still 360.7 MB. Free memory was 319.3 MB in the beginning and 297.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3689.42 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 297.2 MB in the beginning and 399.4 MB in the end (delta: -102.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1506.7ms, 67 PlacesBefore, 30 PlacesAfterwards, 58 TransitionsBefore, 20 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 958 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 677, positive: 643, positive conditional: 643, positive unconditional: 0, negative: 34, negative conditional: 34, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 677, positive: 643, positive conditional: 0, positive unconditional: 643, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 677, positive: 643, positive conditional: 0, positive unconditional: 643, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 553, positive: 532, positive conditional: 0, positive unconditional: 532, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 553, positive: 527, positive conditional: 0, positive unconditional: 527, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 677, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 553, unknown conditional: 0, unknown unconditional: 553] , Statistics on independence cache: Total cache size (in pairs): 553, Positive cache size: 532, Positive conditional cache size: 0, Positive unconditional cache size: 532, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 322.9ms, 32 PlacesBefore, 29 PlacesAfterwards, 22 TransitionsBefore, 19 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 119 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 66, positive: 56, positive conditional: 56, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 66, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 66, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 23, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 23, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 34, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 66, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 23, unknown conditional: 0, unknown unconditional: 23] , Statistics on independence cache: Total cache size (in pairs): 576, Positive cache size: 551, Positive conditional cache size: 0, Positive unconditional cache size: 551, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Eliminated conditions: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 434.4ms, 35 PlacesBefore, 34 PlacesAfterwards, 30 TransitionsBefore, 29 TransitionsAfterwards, 148 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 196 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 178, positive: 164, positive conditional: 164, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 178, positive: 164, positive conditional: 4, positive unconditional: 160, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 178, positive: 164, positive conditional: 4, positive unconditional: 160, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 178, positive: 154, positive conditional: 4, positive unconditional: 150, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 587, Positive cache size: 561, Positive conditional cache size: 0, Positive unconditional cache size: 561, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 54 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.5ms, 40 PlacesBefore, 40 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 80 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 74, positive: 67, positive conditional: 67, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 74, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 74, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 74, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 589, Positive cache size: 563, Positive conditional cache size: 0, Positive unconditional cache size: 563, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 27 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.0ms, 37 PlacesBefore, 37 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 114 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 139 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 110, positive: 97, positive conditional: 97, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 110, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 110, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.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: 110, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 589, Positive cache size: 563, Positive conditional cache size: 0, Positive unconditional cache size: 563, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 34 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.7ms, 39 PlacesBefore, 39 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 589, Positive cache size: 563, Positive conditional cache size: 0, Positive unconditional cache size: 563, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.1ms, 40 PlacesBefore, 40 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 116 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 589, Positive cache size: 563, Positive conditional cache size: 0, Positive unconditional cache size: 563, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 78.0ms, 41 PlacesBefore, 40 PlacesAfterwards, 29 TransitionsBefore, 28 TransitionsAfterwards, 100 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 589, Positive cache size: 563, Positive conditional cache size: 0, Positive unconditional cache size: 563, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 37 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: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 589, Positive cache size: 563, Positive conditional cache size: 0, Positive unconditional cache size: 563, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - PositiveResult [Line: 18]: 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 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3614.5ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 421.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1588.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 26 SDslu, 22 SDs, 0 SdLazy, 93 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=7, InterpolantAutomatonStates: 35, 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: 17.7ms SsaConstructionTime, 162.4ms SatisfiabilityAnalysisTime, 342.5ms InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...