/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 00:06:20,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 00:06:20,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 00:06:20,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 00:06:20,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 00:06:20,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 00:06:20,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 00:06:20,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 00:06:20,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 00:06:20,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 00:06:20,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 00:06:20,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 00:06:20,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 00:06:20,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 00:06:20,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 00:06:20,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 00:06:20,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 00:06:20,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 00:06:20,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 00:06:20,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 00:06:20,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 00:06:20,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 00:06:20,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 00:06:20,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 00:06:20,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 00:06:20,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 00:06:20,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 00:06:20,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 00:06:20,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 00:06:20,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 00:06:20,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 00:06:20,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 00:06:20,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 00:06:20,220 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 00:06:20,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 00:06:20,221 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 00:06:20,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 00:06:20,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 00:06:20,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 00:06:20,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 00:06:20,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 00:06:20,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 00:06:20,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 00:06:20,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 00:06:20,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 00:06:20,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 00:06:20,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 00:06:20,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 00:06:20,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 00:06:20,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 00:06:20,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:06:20,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 00:06:20,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 00:06:20,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 00:06:20,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 00:06:20,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 00:06:20,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 00:06:20,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 00:06:20,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 00:06:20,228 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 00:06:20,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 00:06:20,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 00:06:20,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 00:06:20,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 00:06:20,747 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 00:06:20,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-04-29 00:06:20,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e868d6c32/013c5a00c0ac4d30b3d6945233d93bf1/FLAG1c2a0a6c9 [2021-04-29 00:06:21,689 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 00:06:21,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-04-29 00:06:21,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e868d6c32/013c5a00c0ac4d30b3d6945233d93bf1/FLAG1c2a0a6c9 [2021-04-29 00:06:21,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e868d6c32/013c5a00c0ac4d30b3d6945233d93bf1 [2021-04-29 00:06:21,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 00:06:21,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 00:06:21,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 00:06:21,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 00:06:21,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 00:06:21,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:06:21" (1/1) ... [2021-04-29 00:06:21,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793e3630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:21, skipping insertion in model container [2021-04-29 00:06:21,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:06:21" (1/1) ... [2021-04-29 00:06:21,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 00:06:22,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 00:06:22,192 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] [2021-04-29 00:06:22,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:06:22,547 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 00:06:22,572 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] [2021-04-29 00:06:22,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:06:22,813 INFO L208 MainTranslator]: Completed translation [2021-04-29 00:06:22,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22 WrapperNode [2021-04-29 00:06:22,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 00:06:22,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 00:06:22,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 00:06:22,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 00:06:22,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... [2021-04-29 00:06:22,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... [2021-04-29 00:06:22,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 00:06:22,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 00:06:22,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 00:06:22,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 00:06:22,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... [2021-04-29 00:06:22,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... [2021-04-29 00:06:22,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... [2021-04-29 00:06:22,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... [2021-04-29 00:06:22,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... [2021-04-29 00:06:22,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... [2021-04-29 00:06:22,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... [2021-04-29 00:06:22,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 00:06:22,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 00:06:22,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 00:06:22,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 00:06:22,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:06:23,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 00:06:23,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 00:06:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 00:06:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 00:06:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-29 00:06:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-29 00:06:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-29 00:06:23,110 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-29 00:06:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-29 00:06:23,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-29 00:06:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 00:06:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 00:06:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 00:06:23,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 00:06:23,113 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 00:06:23,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 00:06:23,687 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-29 00:06:23,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:06:23 BoogieIcfgContainer [2021-04-29 00:06:23,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 00:06:23,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 00:06:23,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 00:06:23,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 00:06:23,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 12:06:21" (1/3) ... [2021-04-29 00:06:23,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b9975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:06:23, skipping insertion in model container [2021-04-29 00:06:23,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:22" (2/3) ... [2021-04-29 00:06:23,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b9975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:06:23, skipping insertion in model container [2021-04-29 00:06:23,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:06:23" (3/3) ... [2021-04-29 00:06:23,699 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2021-04-29 00:06:23,707 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 00:06:23,713 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 00:06:23,714 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 00:06:23,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,755 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,755 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,756 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,756 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,758 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,759 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,759 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,759 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,761 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,761 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,765 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,766 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,766 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,773 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,776 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,777 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,777 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,777 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:23,780 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 00:06:23,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 00:06:23,835 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 00:06:23,835 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 00:06:23,835 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 00:06:23,835 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 00:06:23,835 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 00:06:23,836 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 00:06:23,836 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 00:06:23,836 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 00:06:23,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-04-29 00:06:23,897 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-04-29 00:06:23,897 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:23,907 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. [2021-04-29 00:06:23,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 72 transitions, 159 flow [2021-04-29 00:06:23,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2021-04-29 00:06:23,921 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:23,943 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2021-04-29 00:06:23,952 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2021-04-29 00:06:23,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2021-04-29 00:06:23,998 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-04-29 00:06:23,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:24,000 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. [2021-04-29 00:06:24,006 INFO L146 LiptonReduction]: Number of co-enabled transitions 804 [2021-04-29 00:06:28,768 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-29 00:06:28,934 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-29 00:06:29,125 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:06:29,306 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:06:30,029 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:06:30,195 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:06:31,314 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 00:06:31,465 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 00:06:31,653 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:06:31,864 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:06:32,045 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:06:32,249 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:06:32,469 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:06:32,672 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:06:33,626 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:06:33,796 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:06:33,947 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 00:06:34,096 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 00:06:34,308 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:34,522 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:34,742 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:34,962 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:35,186 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:35,404 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:35,605 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:06:35,771 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:06:36,025 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-04-29 00:06:36,335 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-04-29 00:06:36,577 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:36,801 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:37,298 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:37,516 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:37,775 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-04-29 00:06:38,063 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-04-29 00:06:38,189 INFO L158 LiptonReduction]: Checked pairs total: 7301 [2021-04-29 00:06:38,189 INFO L160 LiptonReduction]: Total number of compositions: 116 [2021-04-29 00:06:38,193 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14273 [2021-04-29 00:06:38,214 INFO L129 PetriNetUnfolder]: 0/64 cut-off events. [2021-04-29 00:06:38,214 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:38,215 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:38,216 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:38,216 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:38,222 INFO L82 PathProgramCache]: Analyzing trace with hash -199458746, now seen corresponding path program 1 times [2021-04-29 00:06:38,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:38,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037659899] [2021-04-29 00:06:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:38,543 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:06:38,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:38,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037659899] [2021-04-29 00:06:38,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:38,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:06:38,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061344749] [2021-04-29 00:06:38,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:06:38,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:38,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:06:38,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:06:38,592 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 188 [2021-04-29 00:06:38,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:38,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:38,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 188 [2021-04-29 00:06:38,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:38,802 INFO L129 PetriNetUnfolder]: 278/904 cut-off events. [2021-04-29 00:06:38,803 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:38,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1404 conditions, 904 events. 278/904 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 8229 event pairs, 112 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 1352. Up to 293 conditions per place. [2021-04-29 00:06:38,811 INFO L132 encePairwiseOnDemand]: 167/188 looper letters, 6 selfloop transitions, 6 changer transitions 42/85 dead transitions. [2021-04-29 00:06:38,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 251 flow [2021-04-29 00:06:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:06:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:06:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2021-04-29 00:06:38,830 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6631205673758865 [2021-04-29 00:06:38,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2021-04-29 00:06:38,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2021-04-29 00:06:38,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:38,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2021-04-29 00:06:38,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:38,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:38,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:38,855 INFO L185 Difference]: Start difference. First operand has 85 places, 75 transitions, 159 flow. Second operand 3 states and 374 transitions. [2021-04-29 00:06:38,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 251 flow [2021-04-29 00:06:38,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 00:06:38,863 INFO L241 Difference]: Finished difference. Result has 86 places, 43 transitions, 128 flow [2021-04-29 00:06:38,865 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=86, PETRI_TRANSITIONS=43} [2021-04-29 00:06:38,866 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, 1 predicate places. [2021-04-29 00:06:38,866 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:38,867 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 43 transitions, 128 flow [2021-04-29 00:06:38,867 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 43 transitions, 128 flow [2021-04-29 00:06:38,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions, 128 flow [2021-04-29 00:06:38,889 INFO L129 PetriNetUnfolder]: 45/209 cut-off events. [2021-04-29 00:06:38,889 INFO L130 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2021-04-29 00:06:38,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 209 events. 45/209 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1322 event pairs, 17 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 349. Up to 62 conditions per place. [2021-04-29 00:06:38,895 INFO L146 LiptonReduction]: Number of co-enabled transitions 932 [2021-04-29 00:06:38,901 INFO L158 LiptonReduction]: Checked pairs total: 22 [2021-04-29 00:06:38,901 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:38,902 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-04-29 00:06:38,903 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 128 flow [2021-04-29 00:06:38,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:38,904 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:38,904 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:38,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 00:06:38,905 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:38,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2125702475, now seen corresponding path program 1 times [2021-04-29 00:06:38,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:38,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829203204] [2021-04-29 00:06:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:38,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:38,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:38,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829203204] [2021-04-29 00:06:38,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:38,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:06:38,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174550982] [2021-04-29 00:06:38,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:06:38,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:38,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:06:38,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:06:38,980 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 188 [2021-04-29 00:06:38,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:38,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:38,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 188 [2021-04-29 00:06:38,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:39,007 INFO L129 PetriNetUnfolder]: 36/176 cut-off events. [2021-04-29 00:06:39,007 INFO L130 PetriNetUnfolder]: For 41/48 co-relation queries the response was YES. [2021-04-29 00:06:39,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 176 events. 36/176 cut-off events. For 41/48 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1027 event pairs, 15 based on Foata normal form. 1/111 useless extension candidates. Maximal degree in co-relation 313. Up to 49 conditions per place. [2021-04-29 00:06:39,010 INFO L132 encePairwiseOnDemand]: 185/188 looper letters, 1 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2021-04-29 00:06:39,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 136 flow [2021-04-29 00:06:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:06:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:06:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2021-04-29 00:06:39,015 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2021-04-29 00:06:39,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2021-04-29 00:06:39,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2021-04-29 00:06:39,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:39,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2021-04-29 00:06:39,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,021 INFO L185 Difference]: Start difference. First operand has 49 places, 43 transitions, 128 flow. Second operand 3 states and 388 transitions. [2021-04-29 00:06:39,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 136 flow [2021-04-29 00:06:39,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:06:39,025 INFO L241 Difference]: Finished difference. Result has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:39,025 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2021-04-29 00:06:39,026 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -35 predicate places. [2021-04-29 00:06:39,026 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:39,026 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:39,026 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:39,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:39,044 INFO L129 PetriNetUnfolder]: 36/179 cut-off events. [2021-04-29 00:06:39,044 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-04-29 00:06:39,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 179 events. 36/179 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1068 event pairs, 11 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 283. Up to 49 conditions per place. [2021-04-29 00:06:39,049 INFO L146 LiptonReduction]: Number of co-enabled transitions 930 [2021-04-29 00:06:39,055 INFO L158 LiptonReduction]: Checked pairs total: 22 [2021-04-29 00:06:39,055 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:39,056 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-04-29 00:06:39,057 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:39,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,058 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:39,058 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:39,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 00:06:39,059 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:39,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1888286041, now seen corresponding path program 1 times [2021-04-29 00:06:39,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:39,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420389264] [2021-04-29 00:06:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:39,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:39,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:39,120 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:06:39,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:39,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420389264] [2021-04-29 00:06:39,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:39,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:06:39,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826883105] [2021-04-29 00:06:39,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:39,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:39,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:39,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:39,134 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 188 [2021-04-29 00:06:39,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:39,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 188 [2021-04-29 00:06:39,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:39,178 INFO L129 PetriNetUnfolder]: 30/160 cut-off events. [2021-04-29 00:06:39,178 INFO L130 PetriNetUnfolder]: For 33/66 co-relation queries the response was YES. [2021-04-29 00:06:39,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 160 events. 30/160 cut-off events. For 33/66 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 914 event pairs, 6 based on Foata normal form. 8/108 useless extension candidates. Maximal degree in co-relation 320. Up to 41 conditions per place. [2021-04-29 00:06:39,181 INFO L132 encePairwiseOnDemand]: 181/188 looper letters, 10 selfloop transitions, 9 changer transitions 0/50 dead transitions. [2021-04-29 00:06:39,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 199 flow [2021-04-29 00:06:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:06:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:06:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 465 transitions. [2021-04-29 00:06:39,187 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6183510638297872 [2021-04-29 00:06:39,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 465 transitions. [2021-04-29 00:06:39,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 465 transitions. [2021-04-29 00:06:39,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:39,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 465 transitions. [2021-04-29 00:06:39,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,194 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,194 INFO L185 Difference]: Start difference. First operand has 50 places, 43 transitions, 127 flow. Second operand 4 states and 465 transitions. [2021-04-29 00:06:39,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 199 flow [2021-04-29 00:06:39,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:06:39,198 INFO L241 Difference]: Finished difference. Result has 53 places, 48 transitions, 178 flow [2021-04-29 00:06:39,198 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2021-04-29 00:06:39,199 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -32 predicate places. [2021-04-29 00:06:39,199 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:39,199 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 48 transitions, 178 flow [2021-04-29 00:06:39,200 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 48 transitions, 178 flow [2021-04-29 00:06:39,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 48 transitions, 178 flow [2021-04-29 00:06:39,225 INFO L129 PetriNetUnfolder]: 30/163 cut-off events. [2021-04-29 00:06:39,226 INFO L130 PetriNetUnfolder]: For 69/75 co-relation queries the response was YES. [2021-04-29 00:06:39,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 163 events. 30/163 cut-off events. For 69/75 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 959 event pairs, 6 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 314. Up to 41 conditions per place. [2021-04-29 00:06:39,230 INFO L146 LiptonReduction]: Number of co-enabled transitions 1080 [2021-04-29 00:06:39,237 INFO L158 LiptonReduction]: Checked pairs total: 27 [2021-04-29 00:06:39,237 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:39,238 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-04-29 00:06:39,242 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 178 flow [2021-04-29 00:06:39,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,243 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:39,243 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:39,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 00:06:39,243 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:39,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1593626664, now seen corresponding path program 1 times [2021-04-29 00:06:39,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:39,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334849755] [2021-04-29 00:06:39,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:39,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:39,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:39,334 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:06:39,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:39,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334849755] [2021-04-29 00:06:39,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:39,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:06:39,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377390915] [2021-04-29 00:06:39,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:39,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:39,350 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 188 [2021-04-29 00:06:39,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:39,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 188 [2021-04-29 00:06:39,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:39,412 INFO L129 PetriNetUnfolder]: 23/146 cut-off events. [2021-04-29 00:06:39,412 INFO L130 PetriNetUnfolder]: For 76/122 co-relation queries the response was YES. [2021-04-29 00:06:39,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 146 events. 23/146 cut-off events. For 76/122 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 792 event pairs, 1 based on Foata normal form. 13/101 useless extension candidates. Maximal degree in co-relation 332. Up to 35 conditions per place. [2021-04-29 00:06:39,415 INFO L132 encePairwiseOnDemand]: 181/188 looper letters, 14 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2021-04-29 00:06:39,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 286 flow [2021-04-29 00:06:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:06:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:06:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2021-04-29 00:06:39,418 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6196808510638298 [2021-04-29 00:06:39,418 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 466 transitions. [2021-04-29 00:06:39,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 466 transitions. [2021-04-29 00:06:39,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:39,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 466 transitions. [2021-04-29 00:06:39,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,424 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,424 INFO L185 Difference]: Start difference. First operand has 53 places, 48 transitions, 178 flow. Second operand 4 states and 466 transitions. [2021-04-29 00:06:39,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 286 flow [2021-04-29 00:06:39,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-29 00:06:39,428 INFO L241 Difference]: Finished difference. Result has 59 places, 55 transitions, 282 flow [2021-04-29 00:06:39,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2021-04-29 00:06:39,429 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -26 predicate places. [2021-04-29 00:06:39,429 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:39,429 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 55 transitions, 282 flow [2021-04-29 00:06:39,430 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 55 transitions, 282 flow [2021-04-29 00:06:39,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 55 transitions, 282 flow [2021-04-29 00:06:39,448 INFO L129 PetriNetUnfolder]: 23/146 cut-off events. [2021-04-29 00:06:39,448 INFO L130 PetriNetUnfolder]: For 173/182 co-relation queries the response was YES. [2021-04-29 00:06:39,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 146 events. 23/146 cut-off events. For 173/182 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 826 event pairs, 2 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 348. Up to 35 conditions per place. [2021-04-29 00:06:39,453 INFO L146 LiptonReduction]: Number of co-enabled transitions 1286 [2021-04-29 00:06:39,463 INFO L158 LiptonReduction]: Checked pairs total: 34 [2021-04-29 00:06:39,463 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:39,464 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-04-29 00:06:39,465 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 282 flow [2021-04-29 00:06:39,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,466 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:39,466 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:39,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 00:06:39,467 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:39,467 INFO L82 PathProgramCache]: Analyzing trace with hash -975919090, now seen corresponding path program 1 times [2021-04-29 00:06:39,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:39,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540089601] [2021-04-29 00:06:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:39,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:39,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:06:39,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:39,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:39,513 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:06:39,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:39,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540089601] [2021-04-29 00:06:39,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:39,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:06:39,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765839847] [2021-04-29 00:06:39,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:39,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:39,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:39,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:39,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 188 [2021-04-29 00:06:39,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:39,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 188 [2021-04-29 00:06:39,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:39,578 INFO L129 PetriNetUnfolder]: 19/149 cut-off events. [2021-04-29 00:06:39,578 INFO L130 PetriNetUnfolder]: For 196/249 co-relation queries the response was YES. [2021-04-29 00:06:39,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 149 events. 19/149 cut-off events. For 196/249 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 877 event pairs, 2 based on Foata normal form. 23/109 useless extension candidates. Maximal degree in co-relation 394. Up to 32 conditions per place. [2021-04-29 00:06:39,581 INFO L132 encePairwiseOnDemand]: 181/188 looper letters, 8 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2021-04-29 00:06:39,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 343 flow [2021-04-29 00:06:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:06:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:06:39,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2021-04-29 00:06:39,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6156914893617021 [2021-04-29 00:06:39,583 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2021-04-29 00:06:39,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2021-04-29 00:06:39,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:39,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2021-04-29 00:06:39,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,589 INFO L185 Difference]: Start difference. First operand has 59 places, 55 transitions, 282 flow. Second operand 4 states and 463 transitions. [2021-04-29 00:06:39,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 343 flow [2021-04-29 00:06:39,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 343 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-29 00:06:39,595 INFO L241 Difference]: Finished difference. Result has 64 places, 56 transitions, 352 flow [2021-04-29 00:06:39,595 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2021-04-29 00:06:39,595 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -21 predicate places. [2021-04-29 00:06:39,595 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:39,596 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 56 transitions, 352 flow [2021-04-29 00:06:39,596 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 56 transitions, 352 flow [2021-04-29 00:06:39,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 56 transitions, 352 flow [2021-04-29 00:06:39,613 INFO L129 PetriNetUnfolder]: 19/137 cut-off events. [2021-04-29 00:06:39,613 INFO L130 PetriNetUnfolder]: For 256/260 co-relation queries the response was YES. [2021-04-29 00:06:39,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 137 events. 19/137 cut-off events. For 256/260 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 786 event pairs, 2 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 383. Up to 32 conditions per place. [2021-04-29 00:06:39,618 INFO L146 LiptonReduction]: Number of co-enabled transitions 1320 [2021-04-29 00:06:39,626 INFO L158 LiptonReduction]: Checked pairs total: 35 [2021-04-29 00:06:39,627 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:39,627 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-04-29 00:06:39,628 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 352 flow [2021-04-29 00:06:39,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:39,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:39,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 00:06:39,630 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:39,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1605381329, now seen corresponding path program 1 times [2021-04-29 00:06:39,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:39,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589333888] [2021-04-29 00:06:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:39,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:39,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:39,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:39,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:39,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589333888] [2021-04-29 00:06:39,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:39,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:06:39,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436534603] [2021-04-29 00:06:39,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:39,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:39,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:39,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:39,688 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 188 [2021-04-29 00:06:39,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:39,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 188 [2021-04-29 00:06:39,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:39,740 INFO L129 PetriNetUnfolder]: 17/178 cut-off events. [2021-04-29 00:06:39,740 INFO L130 PetriNetUnfolder]: For 444/483 co-relation queries the response was YES. [2021-04-29 00:06:39,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 178 events. 17/178 cut-off events. For 444/483 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1188 event pairs, 0 based on Foata normal form. 14/116 useless extension candidates. Maximal degree in co-relation 505. Up to 33 conditions per place. [2021-04-29 00:06:39,742 INFO L132 encePairwiseOnDemand]: 183/188 looper letters, 6 selfloop transitions, 6 changer transitions 12/60 dead transitions. [2021-04-29 00:06:39,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 432 flow [2021-04-29 00:06:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:06:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:06:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2021-04-29 00:06:39,745 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6316489361702128 [2021-04-29 00:06:39,745 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2021-04-29 00:06:39,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2021-04-29 00:06:39,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:39,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2021-04-29 00:06:39,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,751 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,751 INFO L185 Difference]: Start difference. First operand has 64 places, 56 transitions, 352 flow. Second operand 4 states and 475 transitions. [2021-04-29 00:06:39,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 432 flow [2021-04-29 00:06:39,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 424 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-04-29 00:06:39,757 INFO L241 Difference]: Finished difference. Result has 68 places, 47 transitions, 285 flow [2021-04-29 00:06:39,757 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2021-04-29 00:06:39,758 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -17 predicate places. [2021-04-29 00:06:39,758 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:39,758 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 47 transitions, 285 flow [2021-04-29 00:06:39,758 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 47 transitions, 285 flow [2021-04-29 00:06:39,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 47 transitions, 285 flow [2021-04-29 00:06:39,773 INFO L129 PetriNetUnfolder]: 8/104 cut-off events. [2021-04-29 00:06:39,774 INFO L130 PetriNetUnfolder]: For 256/267 co-relation queries the response was YES. [2021-04-29 00:06:39,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 104 events. 8/104 cut-off events. For 256/267 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 561 event pairs, 1 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 285. Up to 19 conditions per place. [2021-04-29 00:06:39,777 INFO L146 LiptonReduction]: Number of co-enabled transitions 972 [2021-04-29 00:06:39,784 INFO L158 LiptonReduction]: Checked pairs total: 26 [2021-04-29 00:06:39,784 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:39,784 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-04-29 00:06:39,786 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 47 transitions, 285 flow [2021-04-29 00:06:39,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:39,787 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:39,787 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:39,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 00:06:39,787 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:39,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:39,788 INFO L82 PathProgramCache]: Analyzing trace with hash 818708997, now seen corresponding path program 2 times [2021-04-29 00:06:39,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:39,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303764083] [2021-04-29 00:06:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:39,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:39,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:39,840 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:06:39,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:39,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303764083] [2021-04-29 00:06:39,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:39,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:06:39,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573188205] [2021-04-29 00:06:39,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:39,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:39,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:39,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:39,854 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 188 [2021-04-29 00:06:39,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 47 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 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) [2021-04-29 00:06:39,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:39,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 188 [2021-04-29 00:06:39,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:41,435 INFO L129 PetriNetUnfolder]: 6852/10946 cut-off events. [2021-04-29 00:06:41,435 INFO L130 PetriNetUnfolder]: For 5948/6734 co-relation queries the response was YES. [2021-04-29 00:06:41,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22771 conditions, 10946 events. 6852/10946 cut-off events. For 5948/6734 co-relation queries the response was YES. Maximal size of possible extension queue 2391. Compared 93995 event pairs, 3150 based on Foata normal form. 109/2897 useless extension candidates. Maximal degree in co-relation 22745. Up to 7171 conditions per place. [2021-04-29 00:06:41,503 INFO L132 encePairwiseOnDemand]: 170/188 looper letters, 20 selfloop transitions, 24 changer transitions 12/82 dead transitions. [2021-04-29 00:06:41,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 467 flow [2021-04-29 00:06:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:06:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:06:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2021-04-29 00:06:41,508 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6393617021276595 [2021-04-29 00:06:41,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2021-04-29 00:06:41,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2021-04-29 00:06:41,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:41,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2021-04-29 00:06:41,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:41,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:41,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:41,515 INFO L185 Difference]: Start difference. First operand has 66 places, 47 transitions, 285 flow. Second operand 5 states and 601 transitions. [2021-04-29 00:06:41,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 467 flow [2021-04-29 00:06:41,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 417 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-04-29 00:06:41,529 INFO L241 Difference]: Finished difference. Result has 66 places, 69 transitions, 408 flow [2021-04-29 00:06:41,530 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2021-04-29 00:06:41,530 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -19 predicate places. [2021-04-29 00:06:41,530 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:41,530 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 69 transitions, 408 flow [2021-04-29 00:06:41,531 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 69 transitions, 408 flow [2021-04-29 00:06:41,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 69 transitions, 408 flow [2021-04-29 00:06:41,854 INFO L129 PetriNetUnfolder]: 448/2326 cut-off events. [2021-04-29 00:06:41,854 INFO L130 PetriNetUnfolder]: For 2664/6695 co-relation queries the response was YES. [2021-04-29 00:06:41,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6345 conditions, 2326 events. 448/2326 cut-off events. For 2664/6695 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 32779 event pairs, 258 based on Foata normal form. 6/612 useless extension candidates. Maximal degree in co-relation 6322. Up to 1534 conditions per place. [2021-04-29 00:06:41,906 INFO L146 LiptonReduction]: Number of co-enabled transitions 1390 [2021-04-29 00:06:41,924 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:06:41,924 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:41,924 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 394 [2021-04-29 00:06:41,928 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 408 flow [2021-04-29 00:06:41,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 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) [2021-04-29 00:06:41,929 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:41,929 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:41,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 00:06:41,930 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash 5857672, now seen corresponding path program 1 times [2021-04-29 00:06:41,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:41,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525502111] [2021-04-29 00:06:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:42,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:42,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:42,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:42,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:42,048 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:06:42,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:42,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525502111] [2021-04-29 00:06:42,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:42,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:06:42,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102198812] [2021-04-29 00:06:42,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:06:42,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:42,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:06:42,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:06:42,070 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 188 [2021-04-29 00:06:42,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 408 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:42,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:42,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 188 [2021-04-29 00:06:42,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:43,547 INFO L129 PetriNetUnfolder]: 4590/8867 cut-off events. [2021-04-29 00:06:43,547 INFO L130 PetriNetUnfolder]: For 8671/26041 co-relation queries the response was YES. [2021-04-29 00:06:43,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29625 conditions, 8867 events. 4590/8867 cut-off events. For 8671/26041 co-relation queries the response was YES. Maximal size of possible extension queue 2829. Compared 91631 event pairs, 675 based on Foata normal form. 157/2804 useless extension candidates. Maximal degree in co-relation 29600. Up to 4771 conditions per place. [2021-04-29 00:06:43,603 INFO L132 encePairwiseOnDemand]: 170/188 looper letters, 13 selfloop transitions, 36 changer transitions 34/105 dead transitions. [2021-04-29 00:06:43,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 105 transitions, 725 flow [2021-04-29 00:06:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 00:06:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 00:06:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 840 transitions. [2021-04-29 00:06:43,608 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2021-04-29 00:06:43,608 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 840 transitions. [2021-04-29 00:06:43,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 840 transitions. [2021-04-29 00:06:43,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:43,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 840 transitions. [2021-04-29 00:06:43,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:43,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:43,615 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:43,615 INFO L185 Difference]: Start difference. First operand has 66 places, 69 transitions, 408 flow. Second operand 7 states and 840 transitions. [2021-04-29 00:06:43,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 105 transitions, 725 flow [2021-04-29 00:06:43,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 105 transitions, 725 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-29 00:06:43,660 INFO L241 Difference]: Finished difference. Result has 75 places, 70 transitions, 551 flow [2021-04-29 00:06:43,660 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=551, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2021-04-29 00:06:43,661 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -10 predicate places. [2021-04-29 00:06:43,661 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:43,661 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 70 transitions, 551 flow [2021-04-29 00:06:43,661 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 70 transitions, 551 flow [2021-04-29 00:06:43,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 551 flow [2021-04-29 00:06:43,817 INFO L129 PetriNetUnfolder]: 574/1302 cut-off events. [2021-04-29 00:06:43,817 INFO L130 PetriNetUnfolder]: For 5055/12652 co-relation queries the response was YES. [2021-04-29 00:06:43,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5774 conditions, 1302 events. 574/1302 cut-off events. For 5055/12652 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 10771 event pairs, 108 based on Foata normal form. 8/568 useless extension candidates. Maximal degree in co-relation 5746. Up to 1114 conditions per place. [2021-04-29 00:06:43,840 INFO L146 LiptonReduction]: Number of co-enabled transitions 940 [2021-04-29 00:06:43,859 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:06:43,859 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:43,859 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 198 [2021-04-29 00:06:43,861 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 551 flow [2021-04-29 00:06:43,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:43,862 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:43,862 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:43,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 00:06:43,862 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:43,863 INFO L82 PathProgramCache]: Analyzing trace with hash -568168124, now seen corresponding path program 1 times [2021-04-29 00:06:43,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:43,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276193948] [2021-04-29 00:06:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:43,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:43,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:43,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:43,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:43,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:43,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:43,956 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:06:44,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:44,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276193948] [2021-04-29 00:06:44,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:44,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:06:44,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776563997] [2021-04-29 00:06:44,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 00:06:44,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:44,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 00:06:44,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 00:06:44,035 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 188 [2021-04-29 00:06:44,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 551 flow. Second operand has 6 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:44,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 188 [2021-04-29 00:06:44,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:44,490 INFO L129 PetriNetUnfolder]: 841/1719 cut-off events. [2021-04-29 00:06:44,490 INFO L130 PetriNetUnfolder]: For 7538/43472 co-relation queries the response was YES. [2021-04-29 00:06:44,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 1719 events. 841/1719 cut-off events. For 7538/43472 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 13896 event pairs, 0 based on Foata normal form. 153/899 useless extension candidates. Maximal degree in co-relation 8343. Up to 1384 conditions per place. [2021-04-29 00:06:44,504 INFO L132 encePairwiseOnDemand]: 172/188 looper letters, 2 selfloop transitions, 28 changer transitions 41/83 dead transitions. [2021-04-29 00:06:44,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 763 flow [2021-04-29 00:06:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 00:06:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 00:06:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1040 transitions. [2021-04-29 00:06:44,510 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6146572104018913 [2021-04-29 00:06:44,510 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1040 transitions. [2021-04-29 00:06:44,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1040 transitions. [2021-04-29 00:06:44,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:44,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1040 transitions. [2021-04-29 00:06:44,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,519 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,520 INFO L185 Difference]: Start difference. First operand has 72 places, 70 transitions, 551 flow. Second operand 9 states and 1040 transitions. [2021-04-29 00:06:44,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 763 flow [2021-04-29 00:06:44,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 666 flow, removed 21 selfloop flow, removed 7 redundant places. [2021-04-29 00:06:44,564 INFO L241 Difference]: Finished difference. Result has 76 places, 42 transitions, 358 flow [2021-04-29 00:06:44,564 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=358, PETRI_PLACES=76, PETRI_TRANSITIONS=42} [2021-04-29 00:06:44,564 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -9 predicate places. [2021-04-29 00:06:44,564 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:44,565 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 42 transitions, 358 flow [2021-04-29 00:06:44,565 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 42 transitions, 358 flow [2021-04-29 00:06:44,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 42 transitions, 358 flow [2021-04-29 00:06:44,595 INFO L129 PetriNetUnfolder]: 90/233 cut-off events. [2021-04-29 00:06:44,595 INFO L130 PetriNetUnfolder]: For 987/1022 co-relation queries the response was YES. [2021-04-29 00:06:44,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 233 events. 90/233 cut-off events. For 987/1022 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1177 event pairs, 0 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 1180. Up to 181 conditions per place. [2021-04-29 00:06:44,600 INFO L146 LiptonReduction]: Number of co-enabled transitions 244 [2021-04-29 00:06:44,608 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:06:44,608 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:44,608 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-04-29 00:06:44,610 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 358 flow [2021-04-29 00:06:44,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,612 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:44,612 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:44,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 00:06:44,613 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash 936647534, now seen corresponding path program 1 times [2021-04-29 00:06:44,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:44,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999082187] [2021-04-29 00:06:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:44,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:44,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:06:44,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:44,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:44,693 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:06:44,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:44,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999082187] [2021-04-29 00:06:44,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:44,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:06:44,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343540719] [2021-04-29 00:06:44,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:44,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:44,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:44,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:44,709 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 188 [2021-04-29 00:06:44,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:44,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 188 [2021-04-29 00:06:44,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:44,755 INFO L129 PetriNetUnfolder]: 90/206 cut-off events. [2021-04-29 00:06:44,755 INFO L130 PetriNetUnfolder]: For 1204/1256 co-relation queries the response was YES. [2021-04-29 00:06:44,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 206 events. 90/206 cut-off events. For 1204/1256 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 966 event pairs, 0 based on Foata normal form. 30/116 useless extension candidates. Maximal degree in co-relation 954. Up to 181 conditions per place. [2021-04-29 00:06:44,757 INFO L132 encePairwiseOnDemand]: 181/188 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2021-04-29 00:06:44,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 42 transitions, 364 flow [2021-04-29 00:06:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:06:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:06:44,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2021-04-29 00:06:44,760 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2021-04-29 00:06:44,760 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2021-04-29 00:06:44,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2021-04-29 00:06:44,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:44,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2021-04-29 00:06:44,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,765 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,765 INFO L185 Difference]: Start difference. First operand has 59 places, 42 transitions, 358 flow. Second operand 4 states and 456 transitions. [2021-04-29 00:06:44,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 42 transitions, 364 flow [2021-04-29 00:06:44,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 209 flow, removed 31 selfloop flow, removed 18 redundant places. [2021-04-29 00:06:44,770 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-04-29 00:06:44,772 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-04-29 00:06:44,772 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -42 predicate places. [2021-04-29 00:06:44,772 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:44,772 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 0 transitions, 0 flow [2021-04-29 00:06:44,773 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 0 transitions, 0 flow [2021-04-29 00:06:44,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 00:06:44,773 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 00:06:44,773 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:44,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 00:06:44,774 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 00:06:44,774 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:06:44,774 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:44,774 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 00:06:44,776 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 00:06:44,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:44,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-29 00:06:44,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 12:06:44 BasicIcfg [2021-04-29 00:06:44,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 00:06:44,789 INFO L168 Benchmark]: Toolchain (without parser) took 22903.97 ms. Allocated memory was 302.0 MB in the beginning and 830.5 MB in the end (delta: 528.5 MB). Free memory was 277.4 MB in the beginning and 542.6 MB in the end (delta: -265.2 MB). Peak memory consumption was 265.5 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:44,789 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:06:44,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 877.89 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 282.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:44,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.25 ms. Allocated memory is still 302.0 MB. Free memory was 282.5 MB in the beginning and 280.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:44,791 INFO L168 Benchmark]: Boogie Preprocessor took 58.69 ms. Allocated memory is still 302.0 MB. Free memory was 280.4 MB in the beginning and 279.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:06:44,791 INFO L168 Benchmark]: RCFGBuilder took 699.96 ms. Allocated memory is still 302.0 MB. Free memory was 279.4 MB in the beginning and 257.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:44,793 INFO L168 Benchmark]: TraceAbstraction took 21091.82 ms. Allocated memory was 302.0 MB in the beginning and 830.5 MB in the end (delta: 528.5 MB). Free memory was 256.3 MB in the beginning and 542.6 MB in the end (delta: -286.3 MB). Peak memory consumption was 245.3 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:44,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 877.89 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 282.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 111.25 ms. Allocated memory is still 302.0 MB. Free memory was 282.5 MB in the beginning and 280.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 58.69 ms. Allocated memory is still 302.0 MB. Free memory was 280.4 MB in the beginning and 279.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 699.96 ms. Allocated memory is still 302.0 MB. Free memory was 279.4 MB in the beginning and 257.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 21091.82 ms. Allocated memory was 302.0 MB in the beginning and 830.5 MB in the end (delta: 528.5 MB). Free memory was 256.3 MB in the beginning and 542.6 MB in the end (delta: -286.3 MB). Peak memory consumption was 245.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14237.5ms, 66 PlacesBefore, 85 PlacesAfterwards, 57 TransitionsBefore, 75 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 116 TotalNumberOfCompositions, 7301 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2127, positive: 1895, positive conditional: 1895, positive unconditional: 0, negative: 232, negative conditional: 232, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 865, positive: 819, positive conditional: 0, positive unconditional: 819, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 865, positive: 819, positive conditional: 0, positive unconditional: 819, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 865, positive: 785, positive conditional: 0, positive unconditional: 785, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 80, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 466, positive: 198, positive conditional: 0, positive unconditional: 198, negative: 268, negative conditional: 0, negative unconditional: 268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2127, positive: 1076, positive conditional: 1076, positive unconditional: 0, negative: 186, negative conditional: 186, negative unconditional: 0, unknown: 865, unknown conditional: 865, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.2ms, 86 PlacesBefore, 49 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 932 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 22 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.0ms, 50 PlacesBefore, 50 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 930 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 22 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.1ms, 53 PlacesBefore, 53 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 27 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 861, Positive cache size: 815, Positive conditional cache size: 815, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.8ms, 59 PlacesBefore, 59 PlacesAfterwards, 55 TransitionsBefore, 55 TransitionsAfterwards, 1286 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 34 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, 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: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 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] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 862, Positive cache size: 816, Positive conditional cache size: 816, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.0ms, 64 PlacesBefore, 64 PlacesAfterwards, 56 TransitionsBefore, 56 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 35 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, 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: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 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] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 863, Positive cache size: 817, Positive conditional cache size: 817, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.0ms, 68 PlacesBefore, 66 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 972 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 26 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 863, Positive cache size: 817, Positive conditional cache size: 817, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 393.4ms, 66 PlacesBefore, 66 PlacesAfterwards, 69 TransitionsBefore, 69 TransitionsAfterwards, 1390 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 863, Positive cache size: 817, Positive conditional cache size: 817, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 197.6ms, 75 PlacesBefore, 72 PlacesAfterwards, 70 TransitionsBefore, 70 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 863, Positive cache size: 817, Positive conditional cache size: 817, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.2ms, 76 PlacesBefore, 59 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 244 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 863, Positive cache size: 817, Positive conditional cache size: 817, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5ms, 43 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 863, Positive cache size: 817, Positive conditional cache size: 817, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, 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: 12.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 20948.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4485.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14366.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 84 SDtfs, 65 SDslu, 28 SDs, 0 SdLazy, 346 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 374.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 173.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=551occurred in iteration=8, InterpolantAutomatonStates: 47, 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: 27.0ms SsaConstructionTime, 206.8ms SatisfiabilityAnalysisTime, 750.1ms InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 437 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...