/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:04:14,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:04:14,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:04:14,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:04:14,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:04:14,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:04:14,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:04:14,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:04:14,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:04:14,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:04:14,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:04:14,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:04:14,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:04:14,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:04:14,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:04:14,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:04:14,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:04:14,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:04:14,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:04:14,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:04:14,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:04:14,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:04:14,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:04:14,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:04:14,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:04:14,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:04:14,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:04:14,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:04:14,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:04:14,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:04:14,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:04:14,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:04:14,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:04:14,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:04:14,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:04:14,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:04:14,813 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-RepeatedVariableLbe.epf [2021-03-25 05:04:14,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:04:14,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:04:14,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:04:14,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:04:14,852 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:04:14,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:04:14,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:04:14,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:04:14,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:04:14,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:04:14,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:04:14,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:04:14,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:04:14,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:04:14,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:04:14,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:04:14,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:04:14,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:04:14,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:04:14,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:04:14,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:04:14,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:04:14,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:04:14,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:04:14,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:04:14,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:04:14,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:04:14,856 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:04:14,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:04:14,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:04:14,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:04:15,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:04:15,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:04:15,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:04:15,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:04:15,156 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:04:15,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-03-25 05:04:15,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d7ca4e4/bbc65a5a5ab248f4bdfe0259a18dfba1/FLAG5a52d8ff8 [2021-03-25 05:04:15,772 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:04:15,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-03-25 05:04:15,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d7ca4e4/bbc65a5a5ab248f4bdfe0259a18dfba1/FLAG5a52d8ff8 [2021-03-25 05:04:16,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d7ca4e4/bbc65a5a5ab248f4bdfe0259a18dfba1 [2021-03-25 05:04:16,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:04:16,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:04:16,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:04:16,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:04:16,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:04:16,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6177cd14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16, skipping insertion in model container [2021-03-25 05:04:16,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:04:16,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:04:16,379 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/safe017_tso.oepc.i[950,963] [2021-03-25 05:04:16,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:04:16,562 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:04:16,574 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/safe017_tso.oepc.i[950,963] [2021-03-25 05:04:16,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:04:16,667 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:04:16,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16 WrapperNode [2021-03-25 05:04:16,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:04:16,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:04:16,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:04:16,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:04:16,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:04:16,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:04:16,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:04:16,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:04:16,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (1/1) ... [2021-03-25 05:04:16,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:04:16,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:04:16,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:04:16,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:04:16,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (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 [2021-03-25 05:04:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:04:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:04:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:04:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:04:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:04:16,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:04:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:04:16,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:04:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:04:16,838 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:04:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:04:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:04:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:04:16,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:04:16,839 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:04:17,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:04:17,218 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:04:17,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:04:17 BoogieIcfgContainer [2021-03-25 05:04:17,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:04:17,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:04:17,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:04:17,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:04:17,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:04:16" (1/3) ... [2021-03-25 05:04:17,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25699fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:04:17, skipping insertion in model container [2021-03-25 05:04:17,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:16" (2/3) ... [2021-03-25 05:04:17,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25699fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:04:17, skipping insertion in model container [2021-03-25 05:04:17,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:04:17" (3/3) ... [2021-03-25 05:04:17,225 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2021-03-25 05:04:17,229 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:04:17,231 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:04:17,232 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:04:17,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,256 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,256 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,263 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,263 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,263 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,263 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,277 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,277 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,277 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,277 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:17,278 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:04:17,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:04:17,323 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:04:17,323 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:04:17,323 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:04:17,323 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:04:17,324 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:04:17,324 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:04:17,324 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:04:17,324 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:04:17,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-03-25 05:04:17,388 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-03-25 05:04:17,389 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:17,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-25 05:04:17,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 72 transitions, 159 flow [2021-03-25 05:04:17,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2021-03-25 05:04:17,409 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:17,418 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2021-03-25 05:04:17,421 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2021-03-25 05:04:17,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2021-03-25 05:04:17,445 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-03-25 05:04:17,445 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:17,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-25 05:04:17,448 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-25 05:04:18,537 INFO L154 LiptonReduction]: Checked pairs total: 1064 [2021-03-25 05:04:18,537 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 05:04:18,539 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1131 [2021-03-25 05:04:18,546 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:04:18,547 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:18,547 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:18,547 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:18,548 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:18,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:18,552 INFO L82 PathProgramCache]: Analyzing trace with hash 2096371605, now seen corresponding path program 1 times [2021-03-25 05:04:18,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:18,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022648556] [2021-03-25 05:04:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:18,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:18,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:18,733 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:04:18,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:04:18,743 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:04:18,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:04:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:18,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022648556] [2021-03-25 05:04:18,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:18,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:04:18,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395899622] [2021-03-25 05:04:18,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:04:18,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:18,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:04:18,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:04:18,767 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2021-03-25 05:04:18,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:18,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:18,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2021-03-25 05:04:18,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:18,848 INFO L129 PetriNetUnfolder]: 110/265 cut-off events. [2021-03-25 05:04:18,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:18,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 265 events. 110/265 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1353 event pairs, 32 based on Foata normal form. 25/281 useless extension candidates. Maximal degree in co-relation 470. Up to 98 conditions per place. [2021-03-25 05:04:18,852 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 9 selfloop transitions, 6 changer transitions 11/38 dead transitions. [2021-03-25 05:04:18,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 137 flow [2021-03-25 05:04:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:04:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:04:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2021-03-25 05:04:18,863 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7872727272727272 [2021-03-25 05:04:18,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2021-03-25 05:04:18,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2021-03-25 05:04:18,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:18,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2021-03-25 05:04:18,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:18,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:18,882 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:18,883 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 433 transitions. [2021-03-25 05:04:18,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 137 flow [2021-03-25 05:04:18,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:04:18,887 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 108 flow [2021-03-25 05:04:18,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-25 05:04:18,889 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-25 05:04:18,889 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:18,889 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 26 transitions, 108 flow [2021-03-25 05:04:18,890 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 26 transitions, 108 flow [2021-03-25 05:04:18,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 108 flow [2021-03-25 05:04:18,917 INFO L129 PetriNetUnfolder]: 63/170 cut-off events. [2021-03-25 05:04:18,917 INFO L130 PetriNetUnfolder]: For 74/84 co-relation queries the response was YES. [2021-03-25 05:04:18,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 170 events. 63/170 cut-off events. For 74/84 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 774 event pairs, 24 based on Foata normal form. 3/161 useless extension candidates. Maximal degree in co-relation 406. Up to 76 conditions per place. [2021-03-25 05:04:18,922 INFO L142 LiptonReduction]: Number of co-enabled transitions 134 [2021-03-25 05:04:19,184 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-03-25 05:04:19,355 INFO L154 LiptonReduction]: Checked pairs total: 135 [2021-03-25 05:04:19,356 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:04:19,356 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 467 [2021-03-25 05:04:19,358 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 102 flow [2021-03-25 05:04:19,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:19,358 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:19,358 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:19,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:04:19,358 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:19,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:19,359 INFO L82 PathProgramCache]: Analyzing trace with hash 562991605, now seen corresponding path program 1 times [2021-03-25 05:04:19,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:19,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562277518] [2021-03-25 05:04:19,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:19,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:19,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:19,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:19,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:19,464 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:04:19,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:04:19,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:04:19,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:04:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:19,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562277518] [2021-03-25 05:04:19,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:19,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:04:19,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813808843] [2021-03-25 05:04:19,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:04:19,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:19,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:04:19,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:04:19,481 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 113 [2021-03-25 05:04:19,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:19,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:19,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 113 [2021-03-25 05:04:19,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:19,557 INFO L129 PetriNetUnfolder]: 66/201 cut-off events. [2021-03-25 05:04:19,558 INFO L130 PetriNetUnfolder]: For 197/256 co-relation queries the response was YES. [2021-03-25 05:04:19,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 201 events. 66/201 cut-off events. For 197/256 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1042 event pairs, 2 based on Foata normal form. 27/225 useless extension candidates. Maximal degree in co-relation 623. Up to 80 conditions per place. [2021-03-25 05:04:19,560 INFO L132 encePairwiseOnDemand]: 104/113 looper letters, 13 selfloop transitions, 11 changer transitions 19/52 dead transitions. [2021-03-25 05:04:19,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 360 flow [2021-03-25 05:04:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:04:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:04:19,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-25 05:04:19,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7661188369152971 [2021-03-25 05:04:19,564 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-25 05:04:19,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-25 05:04:19,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:19,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-25 05:04:19,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:19,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:19,570 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:19,570 INFO L185 Difference]: Start difference. First operand has 31 places, 23 transitions, 102 flow. Second operand 7 states and 606 transitions. [2021-03-25 05:04:19,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 360 flow [2021-03-25 05:04:19,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:04:19,576 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 194 flow [2021-03-25 05:04:19,576 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2021-03-25 05:04:19,577 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-25 05:04:19,577 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:19,577 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 30 transitions, 194 flow [2021-03-25 05:04:19,578 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 30 transitions, 194 flow [2021-03-25 05:04:19,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 194 flow [2021-03-25 05:04:19,597 INFO L129 PetriNetUnfolder]: 39/121 cut-off events. [2021-03-25 05:04:19,597 INFO L130 PetriNetUnfolder]: For 261/286 co-relation queries the response was YES. [2021-03-25 05:04:19,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 121 events. 39/121 cut-off events. For 261/286 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 523 event pairs, 9 based on Foata normal form. 5/121 useless extension candidates. Maximal degree in co-relation 391. Up to 53 conditions per place. [2021-03-25 05:04:19,604 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-25 05:04:19,735 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-25 05:04:19,910 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-25 05:04:19,968 INFO L154 LiptonReduction]: Checked pairs total: 210 [2021-03-25 05:04:19,968 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:04:19,968 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 391 [2021-03-25 05:04:19,969 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 190 flow [2021-03-25 05:04:19,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:19,969 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:19,969 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:19,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:04:19,970 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:19,970 INFO L82 PathProgramCache]: Analyzing trace with hash 885063118, now seen corresponding path program 1 times [2021-03-25 05:04:19,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:19,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008208665] [2021-03-25 05:04:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:20,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,004 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:04:20,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:04:20,011 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:04:20,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:04:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:20,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008208665] [2021-03-25 05:04:20,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:20,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:04:20,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82625099] [2021-03-25 05:04:20,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:04:20,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:20,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:04:20,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:04:20,031 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2021-03-25 05:04:20,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:20,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2021-03-25 05:04:20,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:20,089 INFO L129 PetriNetUnfolder]: 44/142 cut-off events. [2021-03-25 05:04:20,089 INFO L130 PetriNetUnfolder]: For 553/641 co-relation queries the response was YES. [2021-03-25 05:04:20,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 142 events. 44/142 cut-off events. For 553/641 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 651 event pairs, 2 based on Foata normal form. 13/151 useless extension candidates. Maximal degree in co-relation 564. Up to 53 conditions per place. [2021-03-25 05:04:20,091 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 16 selfloop transitions, 12 changer transitions 11/48 dead transitions. [2021-03-25 05:04:20,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 416 flow [2021-03-25 05:04:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:04:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:04:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2021-03-25 05:04:20,094 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7468671679197995 [2021-03-25 05:04:20,094 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2021-03-25 05:04:20,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2021-03-25 05:04:20,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:20,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2021-03-25 05:04:20,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,100 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,100 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 190 flow. Second operand 7 states and 596 transitions. [2021-03-25 05:04:20,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 416 flow [2021-03-25 05:04:20,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 404 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-03-25 05:04:20,105 INFO L241 Difference]: Finished difference. Result has 49 places, 34 transitions, 290 flow [2021-03-25 05:04:20,105 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2021-03-25 05:04:20,105 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-25 05:04:20,105 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:20,105 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 34 transitions, 290 flow [2021-03-25 05:04:20,106 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 34 transitions, 290 flow [2021-03-25 05:04:20,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 34 transitions, 290 flow [2021-03-25 05:04:20,127 INFO L129 PetriNetUnfolder]: 29/103 cut-off events. [2021-03-25 05:04:20,128 INFO L130 PetriNetUnfolder]: For 374/400 co-relation queries the response was YES. [2021-03-25 05:04:20,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 103 events. 29/103 cut-off events. For 374/400 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 426 event pairs, 3 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 407. Up to 41 conditions per place. [2021-03-25 05:04:20,129 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-25 05:04:20,132 INFO L154 LiptonReduction]: Checked pairs total: 111 [2021-03-25 05:04:20,132 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:04:20,132 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-25 05:04:20,133 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 290 flow [2021-03-25 05:04:20,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,133 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:20,133 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:20,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:04:20,134 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1065867183, now seen corresponding path program 1 times [2021-03-25 05:04:20,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:20,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937611352] [2021-03-25 05:04:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:20,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,165 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:04:20,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:04:20,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:04:20,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:04:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:20,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937611352] [2021-03-25 05:04:20,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:20,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:04:20,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596939705] [2021-03-25 05:04:20,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:04:20,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:20,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:04:20,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:04:20,182 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2021-03-25 05:04:20,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:20,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2021-03-25 05:04:20,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:20,234 INFO L129 PetriNetUnfolder]: 35/123 cut-off events. [2021-03-25 05:04:20,234 INFO L130 PetriNetUnfolder]: For 742/814 co-relation queries the response was YES. [2021-03-25 05:04:20,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 123 events. 35/123 cut-off events. For 742/814 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 531 event pairs, 3 based on Foata normal form. 21/143 useless extension candidates. Maximal degree in co-relation 580. Up to 41 conditions per place. [2021-03-25 05:04:20,236 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 14 selfloop transitions, 17 changer transitions 8/48 dead transitions. [2021-03-25 05:04:20,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 510 flow [2021-03-25 05:04:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:04:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:04:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2021-03-25 05:04:20,238 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7468671679197995 [2021-03-25 05:04:20,238 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2021-03-25 05:04:20,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2021-03-25 05:04:20,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:20,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2021-03-25 05:04:20,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,247 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,247 INFO L185 Difference]: Start difference. First operand has 46 places, 34 transitions, 290 flow. Second operand 7 states and 596 transitions. [2021-03-25 05:04:20,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 510 flow [2021-03-25 05:04:20,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 483 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-25 05:04:20,252 INFO L241 Difference]: Finished difference. Result has 51 places, 37 transitions, 351 flow [2021-03-25 05:04:20,252 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2021-03-25 05:04:20,253 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-25 05:04:20,253 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:20,253 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 37 transitions, 351 flow [2021-03-25 05:04:20,253 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 37 transitions, 351 flow [2021-03-25 05:04:20,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 37 transitions, 351 flow [2021-03-25 05:04:20,264 INFO L129 PetriNetUnfolder]: 26/97 cut-off events. [2021-03-25 05:04:20,264 INFO L130 PetriNetUnfolder]: For 393/419 co-relation queries the response was YES. [2021-03-25 05:04:20,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 97 events. 26/97 cut-off events. For 393/419 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 398 event pairs, 1 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 422. Up to 37 conditions per place. [2021-03-25 05:04:20,266 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-25 05:04:20,269 INFO L154 LiptonReduction]: Checked pairs total: 164 [2021-03-25 05:04:20,269 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:04:20,269 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 05:04:20,271 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 351 flow [2021-03-25 05:04:20,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,272 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:20,272 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:20,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:04:20,272 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:20,273 INFO L82 PathProgramCache]: Analyzing trace with hash 457127928, now seen corresponding path program 1 times [2021-03-25 05:04:20,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:20,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91304923] [2021-03-25 05:04:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:20,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:20,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,308 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:04:20,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:04:20,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:04:20,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:04:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:20,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91304923] [2021-03-25 05:04:20,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:20,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:04:20,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450341783] [2021-03-25 05:04:20,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:04:20,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:04:20,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:04:20,325 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2021-03-25 05:04:20,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:20,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2021-03-25 05:04:20,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:20,366 INFO L129 PetriNetUnfolder]: 26/115 cut-off events. [2021-03-25 05:04:20,366 INFO L130 PetriNetUnfolder]: For 757/824 co-relation queries the response was YES. [2021-03-25 05:04:20,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 115 events. 26/115 cut-off events. For 757/824 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 514 event pairs, 1 based on Foata normal form. 22/135 useless extension candidates. Maximal degree in co-relation 577. Up to 37 conditions per place. [2021-03-25 05:04:20,368 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 11 selfloop transitions, 19 changer transitions 6/45 dead transitions. [2021-03-25 05:04:20,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 527 flow [2021-03-25 05:04:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:04:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:04:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 591 transitions. [2021-03-25 05:04:20,370 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7406015037593985 [2021-03-25 05:04:20,370 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 591 transitions. [2021-03-25 05:04:20,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 591 transitions. [2021-03-25 05:04:20,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:20,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 591 transitions. [2021-03-25 05:04:20,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.42857142857143) internal successors, (591), 7 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,373 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,374 INFO L185 Difference]: Start difference. First operand has 48 places, 37 transitions, 351 flow. Second operand 7 states and 591 transitions. [2021-03-25 05:04:20,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 527 flow [2021-03-25 05:04:20,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 483 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-25 05:04:20,377 INFO L241 Difference]: Finished difference. Result has 54 places, 37 transitions, 402 flow [2021-03-25 05:04:20,378 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=402, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2021-03-25 05:04:20,378 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2021-03-25 05:04:20,378 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:20,378 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 37 transitions, 402 flow [2021-03-25 05:04:20,378 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 37 transitions, 402 flow [2021-03-25 05:04:20,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 37 transitions, 402 flow [2021-03-25 05:04:20,387 INFO L129 PetriNetUnfolder]: 20/88 cut-off events. [2021-03-25 05:04:20,387 INFO L130 PetriNetUnfolder]: For 509/547 co-relation queries the response was YES. [2021-03-25 05:04:20,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 88 events. 20/88 cut-off events. For 509/547 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 362 event pairs, 3 based on Foata normal form. 4/90 useless extension candidates. Maximal degree in co-relation 406. Up to 32 conditions per place. [2021-03-25 05:04:20,388 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-25 05:04:20,391 INFO L154 LiptonReduction]: Checked pairs total: 161 [2021-03-25 05:04:20,391 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:04:20,391 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-25 05:04:20,392 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 402 flow [2021-03-25 05:04:20,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:20,392 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:20,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:04:20,393 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:20,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:20,393 INFO L82 PathProgramCache]: Analyzing trace with hash -790007433, now seen corresponding path program 1 times [2021-03-25 05:04:20,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:20,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412384536] [2021-03-25 05:04:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:20,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:04:20,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:04:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:20,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412384536] [2021-03-25 05:04:20,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:20,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:04:20,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487988127] [2021-03-25 05:04:20,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:04:20,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:20,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:04:20,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:04:20,426 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-25 05:04:20,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 402 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:20,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-25 05:04:20,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:20,463 INFO L129 PetriNetUnfolder]: 23/122 cut-off events. [2021-03-25 05:04:20,463 INFO L130 PetriNetUnfolder]: For 981/1037 co-relation queries the response was YES. [2021-03-25 05:04:20,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 122 events. 23/122 cut-off events. For 981/1037 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 631 event pairs, 2 based on Foata normal form. 18/139 useless extension candidates. Maximal degree in co-relation 626. Up to 39 conditions per place. [2021-03-25 05:04:20,464 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 7 selfloop transitions, 6 changer transitions 15/44 dead transitions. [2021-03-25 05:04:20,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 548 flow [2021-03-25 05:04:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:04:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:04:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2021-03-25 05:04:20,466 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7701754385964912 [2021-03-25 05:04:20,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2021-03-25 05:04:20,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2021-03-25 05:04:20,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:20,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2021-03-25 05:04:20,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2021-03-25 05:04:20,469 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) [2021-03-25 05:04:20,469 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) [2021-03-25 05:04:20,469 INFO L185 Difference]: Start difference. First operand has 51 places, 37 transitions, 402 flow. Second operand 5 states and 439 transitions. [2021-03-25 05:04:20,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 548 flow [2021-03-25 05:04:20,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 44 transitions, 524 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-25 05:04:20,473 INFO L241 Difference]: Finished difference. Result has 54 places, 29 transitions, 302 flow [2021-03-25 05:04:20,474 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=54, PETRI_TRANSITIONS=29} [2021-03-25 05:04:20,474 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2021-03-25 05:04:20,474 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:20,474 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 29 transitions, 302 flow [2021-03-25 05:04:20,474 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 29 transitions, 302 flow [2021-03-25 05:04:20,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 29 transitions, 302 flow [2021-03-25 05:04:20,480 INFO L129 PetriNetUnfolder]: 9/60 cut-off events. [2021-03-25 05:04:20,480 INFO L130 PetriNetUnfolder]: For 353/376 co-relation queries the response was YES. [2021-03-25 05:04:20,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 60 events. 9/60 cut-off events. For 353/376 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 217 event pairs, 2 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 271. Up to 18 conditions per place. [2021-03-25 05:04:20,481 INFO L142 LiptonReduction]: Number of co-enabled transitions 146 [2021-03-25 05:04:20,483 INFO L154 LiptonReduction]: Checked pairs total: 164 [2021-03-25 05:04:20,484 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:04:20,484 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-25 05:04:20,484 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 29 transitions, 302 flow [2021-03-25 05:04:20,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,485 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:20,485 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:20,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:04:20,485 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:20,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:20,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1861810015, now seen corresponding path program 2 times [2021-03-25 05:04:20,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:20,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529886837] [2021-03-25 05:04:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:20,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,513 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:04:20,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:04:20,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:20,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529886837] [2021-03-25 05:04:20,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:20,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:04:20,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414561657] [2021-03-25 05:04:20,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:04:20,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:20,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:04:20,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:04:20,521 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2021-03-25 05:04:20,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 29 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:20,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2021-03-25 05:04:20,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:20,568 INFO L129 PetriNetUnfolder]: 92/235 cut-off events. [2021-03-25 05:04:20,568 INFO L130 PetriNetUnfolder]: For 1108/1183 co-relation queries the response was YES. [2021-03-25 05:04:20,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 235 events. 92/235 cut-off events. For 1108/1183 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1309 event pairs, 33 based on Foata normal form. 29/247 useless extension candidates. Maximal degree in co-relation 744. Up to 138 conditions per place. [2021-03-25 05:04:20,570 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 5 selfloop transitions, 7 changer transitions 4/39 dead transitions. [2021-03-25 05:04:20,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 39 transitions, 354 flow [2021-03-25 05:04:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:04:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:04:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2021-03-25 05:04:20,572 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7596491228070176 [2021-03-25 05:04:20,572 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2021-03-25 05:04:20,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2021-03-25 05:04:20,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:20,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2021-03-25 05:04:20,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,574 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) [2021-03-25 05:04:20,574 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) [2021-03-25 05:04:20,575 INFO L185 Difference]: Start difference. First operand has 53 places, 29 transitions, 302 flow. Second operand 5 states and 433 transitions. [2021-03-25 05:04:20,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 39 transitions, 354 flow [2021-03-25 05:04:20,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 286 flow, removed 8 selfloop flow, removed 9 redundant places. [2021-03-25 05:04:20,578 INFO L241 Difference]: Finished difference. Result has 51 places, 35 transitions, 284 flow [2021-03-25 05:04:20,578 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2021-03-25 05:04:20,578 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-25 05:04:20,578 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:20,579 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 35 transitions, 284 flow [2021-03-25 05:04:20,579 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 35 transitions, 284 flow [2021-03-25 05:04:20,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 35 transitions, 284 flow [2021-03-25 05:04:20,591 INFO L129 PetriNetUnfolder]: 31/148 cut-off events. [2021-03-25 05:04:20,591 INFO L130 PetriNetUnfolder]: For 501/554 co-relation queries the response was YES. [2021-03-25 05:04:20,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 148 events. 31/148 cut-off events. For 501/554 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 875 event pairs, 11 based on Foata normal form. 4/140 useless extension candidates. Maximal degree in co-relation 514. Up to 59 conditions per place. [2021-03-25 05:04:20,593 INFO L142 LiptonReduction]: Number of co-enabled transitions 234 [2021-03-25 05:04:20,596 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:04:20,596 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:04:20,596 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 05:04:20,596 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 284 flow [2021-03-25 05:04:20,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:20,597 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:20,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:04:20,597 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:20,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:20,597 INFO L82 PathProgramCache]: Analyzing trace with hash -272978311, now seen corresponding path program 1 times [2021-03-25 05:04:20,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:20,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20744496] [2021-03-25 05:04:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:20,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,625 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:04:20,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:04:20,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:20,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20744496] [2021-03-25 05:04:20,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:20,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:04:20,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920518180] [2021-03-25 05:04:20,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:04:20,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:20,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:04:20,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:04:20,633 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2021-03-25 05:04:20,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:20,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2021-03-25 05:04:20,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:20,684 INFO L129 PetriNetUnfolder]: 51/169 cut-off events. [2021-03-25 05:04:20,685 INFO L130 PetriNetUnfolder]: For 891/1151 co-relation queries the response was YES. [2021-03-25 05:04:20,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 169 events. 51/169 cut-off events. For 891/1151 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 912 event pairs, 4 based on Foata normal form. 76/231 useless extension candidates. Maximal degree in co-relation 639. Up to 73 conditions per place. [2021-03-25 05:04:20,686 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 5 selfloop transitions, 10 changer transitions 11/45 dead transitions. [2021-03-25 05:04:20,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 374 flow [2021-03-25 05:04:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:04:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:04:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2021-03-25 05:04:20,688 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7581453634085213 [2021-03-25 05:04:20,688 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2021-03-25 05:04:20,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2021-03-25 05:04:20,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:20,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2021-03-25 05:04:20,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,692 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,692 INFO L185 Difference]: Start difference. First operand has 51 places, 35 transitions, 284 flow. Second operand 7 states and 605 transitions. [2021-03-25 05:04:20,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 374 flow [2021-03-25 05:04:20,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 368 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-03-25 05:04:20,695 INFO L241 Difference]: Finished difference. Result has 59 places, 34 transitions, 308 flow [2021-03-25 05:04:20,695 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=59, PETRI_TRANSITIONS=34} [2021-03-25 05:04:20,696 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2021-03-25 05:04:20,696 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:20,696 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 34 transitions, 308 flow [2021-03-25 05:04:20,696 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 34 transitions, 308 flow [2021-03-25 05:04:20,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 34 transitions, 308 flow [2021-03-25 05:04:20,706 INFO L129 PetriNetUnfolder]: 29/111 cut-off events. [2021-03-25 05:04:20,707 INFO L130 PetriNetUnfolder]: For 517/568 co-relation queries the response was YES. [2021-03-25 05:04:20,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 111 events. 29/111 cut-off events. For 517/568 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 509 event pairs, 4 based on Foata normal form. 11/119 useless extension candidates. Maximal degree in co-relation 474. Up to 66 conditions per place. [2021-03-25 05:04:20,708 INFO L142 LiptonReduction]: Number of co-enabled transitions 174 [2021-03-25 05:04:20,712 INFO L154 LiptonReduction]: Checked pairs total: 23 [2021-03-25 05:04:20,712 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:04:20,713 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 05:04:20,713 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 292 flow [2021-03-25 05:04:20,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,713 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:20,713 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:20,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:04:20,714 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:20,714 INFO L82 PathProgramCache]: Analyzing trace with hash -192230689, now seen corresponding path program 1 times [2021-03-25 05:04:20,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:20,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940511107] [2021-03-25 05:04:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:20,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:20,757 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:04:20,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:04:20,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:20,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:20,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940511107] [2021-03-25 05:04:20,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:20,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:04:20,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300183154] [2021-03-25 05:04:20,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:04:20,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:20,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:04:20,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:04:20,766 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2021-03-25 05:04:20,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:20,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2021-03-25 05:04:20,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:20,812 INFO L129 PetriNetUnfolder]: 22/78 cut-off events. [2021-03-25 05:04:20,812 INFO L130 PetriNetUnfolder]: For 499/596 co-relation queries the response was YES. [2021-03-25 05:04:20,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 78 events. 22/78 cut-off events. For 499/596 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 271 event pairs, 0 based on Foata normal form. 37/112 useless extension candidates. Maximal degree in co-relation 379. Up to 49 conditions per place. [2021-03-25 05:04:20,813 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 2 selfloop transitions, 10 changer transitions 12/35 dead transitions. [2021-03-25 05:04:20,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 35 transitions, 347 flow [2021-03-25 05:04:20,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:04:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:04:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2021-03-25 05:04:20,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7506265664160401 [2021-03-25 05:04:20,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2021-03-25 05:04:20,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2021-03-25 05:04:20,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:20,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2021-03-25 05:04:20,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,818 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:20,818 INFO L185 Difference]: Start difference. First operand has 57 places, 32 transitions, 292 flow. Second operand 7 states and 599 transitions. [2021-03-25 05:04:20,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 35 transitions, 347 flow [2021-03-25 05:04:20,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 35 transitions, 289 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-03-25 05:04:20,821 INFO L241 Difference]: Finished difference. Result has 55 places, 23 transitions, 184 flow [2021-03-25 05:04:20,822 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=55, PETRI_TRANSITIONS=23} [2021-03-25 05:04:20,822 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2021-03-25 05:04:20,822 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:20,822 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 23 transitions, 184 flow [2021-03-25 05:04:20,822 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 23 transitions, 184 flow [2021-03-25 05:04:20,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 23 transitions, 184 flow [2021-03-25 05:04:20,826 INFO L129 PetriNetUnfolder]: 5/26 cut-off events. [2021-03-25 05:04:20,826 INFO L130 PetriNetUnfolder]: For 58/61 co-relation queries the response was YES. [2021-03-25 05:04:20,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 26 events. 5/26 cut-off events. For 58/61 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 96. Up to 11 conditions per place. [2021-03-25 05:04:20,826 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-25 05:04:21,140 INFO L154 LiptonReduction]: Checked pairs total: 20 [2021-03-25 05:04:21,140 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 05:04:21,141 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 319 [2021-03-25 05:04:21,141 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 19 transitions, 203 flow [2021-03-25 05:04:21,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:21,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:21,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:21,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:04:21,142 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:21,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:21,142 INFO L82 PathProgramCache]: Analyzing trace with hash -67232948, now seen corresponding path program 1 times [2021-03-25 05:04:21,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:21,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076191697] [2021-03-25 05:04:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:21,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:21,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:21,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:21,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:21,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:21,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:21,181 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:04:21,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:04:21,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:04:21,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:04:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:04:21,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076191697] [2021-03-25 05:04:21,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:21,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:04:21,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350171630] [2021-03-25 05:04:21,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:04:21,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:21,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:04:21,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:04:21,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 122 [2021-03-25 05:04:21,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 19 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:21,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:21,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 122 [2021-03-25 05:04:21,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:21,215 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-25 05:04:21,215 INFO L130 PetriNetUnfolder]: For 201/226 co-relation queries the response was YES. [2021-03-25 05:04:21,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 24 events. 5/24 cut-off events. For 201/226 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 4/27 useless extension candidates. Maximal degree in co-relation 135. Up to 10 conditions per place. [2021-03-25 05:04:21,216 INFO L132 encePairwiseOnDemand]: 113/122 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-03-25 05:04:21,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 18 transitions, 197 flow [2021-03-25 05:04:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:04:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:04:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2021-03-25 05:04:21,217 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6762295081967213 [2021-03-25 05:04:21,217 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2021-03-25 05:04:21,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2021-03-25 05:04:21,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:21,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2021-03-25 05:04:21,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:21,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:21,221 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:21,221 INFO L185 Difference]: Start difference. First operand has 49 places, 19 transitions, 203 flow. Second operand 6 states and 495 transitions. [2021-03-25 05:04:21,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 18 transitions, 197 flow [2021-03-25 05:04:21,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 18 transitions, 79 flow, removed 14 selfloop flow, removed 21 redundant places. [2021-03-25 05:04:21,222 INFO L241 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2021-03-25 05:04:21,223 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2021-03-25 05:04:21,223 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2021-03-25 05:04:21,223 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:21,223 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 0 transitions, 0 flow [2021-03-25 05:04:21,223 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 0 transitions, 0 flow [2021-03-25 05:04:21,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:04:21,224 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:04:21,224 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:21,224 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. [2021-03-25 05:04:21,224 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:04:21,224 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:04:21,224 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:04:21,224 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:04:21,225 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:04:21,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:21,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 05:04:21,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:04:21 BasicIcfg [2021-03-25 05:04:21,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:04:21,229 INFO L168 Benchmark]: Toolchain (without parser) took 5002.49 ms. Allocated memory was 255.9 MB in the beginning and 406.8 MB in the end (delta: 151.0 MB). Free memory was 235.3 MB in the beginning and 354.2 MB in the end (delta: -118.9 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:21,230 INFO L168 Benchmark]: CDTParser took 0.49 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. [2021-03-25 05:04:21,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.28 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 235.3 MB in the beginning and 301.5 MB in the end (delta: -66.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:21,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.93 ms. Allocated memory is still 337.6 MB. Free memory was 301.5 MB in the beginning and 299.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:21,233 INFO L168 Benchmark]: Boogie Preprocessor took 31.22 ms. Allocated memory is still 337.6 MB. Free memory was 299.8 MB in the beginning and 298.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:21,233 INFO L168 Benchmark]: RCFGBuilder took 463.16 ms. Allocated memory is still 337.6 MB. Free memory was 298.1 MB in the beginning and 314.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:21,234 INFO L168 Benchmark]: TraceAbstraction took 4007.74 ms. Allocated memory was 337.6 MB in the beginning and 406.8 MB in the end (delta: 69.2 MB). Free memory was 314.1 MB in the beginning and 354.2 MB in the end (delta: -40.0 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:21,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 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 440.28 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 235.3 MB in the beginning and 301.5 MB in the end (delta: -66.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 54.93 ms. Allocated memory is still 337.6 MB. Free memory was 301.5 MB in the beginning and 299.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.22 ms. Allocated memory is still 337.6 MB. Free memory was 299.8 MB in the beginning and 298.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 463.16 ms. Allocated memory is still 337.6 MB. Free memory was 298.1 MB in the beginning and 314.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4007.74 ms. Allocated memory was 337.6 MB in the beginning and 406.8 MB in the end (delta: 69.2 MB). Free memory was 314.1 MB in the beginning and 354.2 MB in the end (delta: -40.0 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1115.5ms, 66 PlacesBefore, 31 PlacesAfterwards, 57 TransitionsBefore, 21 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 12 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 642, positive: 609, positive conditional: 0, positive unconditional: 609, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 410, positive: 394, positive conditional: 0, positive unconditional: 394, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 410, positive: 394, positive conditional: 0, positive unconditional: 394, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 642, positive: 215, positive conditional: 0, positive unconditional: 215, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 410, unknown conditional: 0, unknown unconditional: 410] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 466.1ms, 36 PlacesBefore, 31 PlacesAfterwards, 26 TransitionsBefore, 23 TransitionsAfterwards, 134 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 135 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 390.1ms, 41 PlacesBefore, 37 PlacesAfterwards, 30 TransitionsBefore, 29 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 210 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.2ms, 49 PlacesBefore, 46 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 111 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 14, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.1ms, 51 PlacesBefore, 48 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 164 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 38, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.8ms, 54 PlacesBefore, 51 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 161 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 30, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.4ms, 54 PlacesBefore, 53 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 146 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 164 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.8ms, 51 PlacesBefore, 51 PlacesAfterwards, 35 TransitionsBefore, 35 TransitionsAfterwards, 234 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , 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): 43, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.4ms, 59 PlacesBefore, 57 PlacesAfterwards, 34 TransitionsBefore, 32 TransitionsAfterwards, 174 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 23 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 318.2ms, 55 PlacesBefore, 49 PlacesAfterwards, 23 TransitionsBefore, 19 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 4 FixpointIterations, 3 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 20 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 20, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 32 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 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, 71 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3907.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 681.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1218.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 91 SDtfs, 73 SDslu, 107 SDs, 0 SdLazy, 190 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 149.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 189.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=402occurred in iteration=5, InterpolantAutomatonStates: 63, 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: 19.8ms SsaConstructionTime, 116.4ms SatisfiabilityAnalysisTime, 403.6ms InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...