/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:56:20,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:56:20,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:56:20,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 19:56:20,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:56:20,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:56:20,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:56:20,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:56:20,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:56:20,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:56:20,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:56:20,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:56:20,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:56:20,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:56:20,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:56:20,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:56:20,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:56:20,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:56:20,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:56:20,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:56:20,689 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-SemanticLbe.epf [2021-03-24 19:56:20,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:56:20,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:56:20,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:56:20,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:56:20,717 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:56:20,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:56:20,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:56:20,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:56:20,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:56:20,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:56:20,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:56:20,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:56:20,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:56:20,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:56:20,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:56:20,719 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:56:20,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:56:20,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:56:20,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:56:20,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:56:20,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:56:20,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:56:20,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:56:20,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:56:20,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:56:20,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:56:20,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:56:20,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:56:20,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:56:20,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:56:20,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:56:20,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:56:20,958 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:56:20,959 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:56:20,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-03-24 19:56:21,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b195a5a74/99934aa8250b4a9fb3c645dac6fb05fb/FLAGbc6843988 [2021-03-24 19:56:21,430 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:56:21,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-03-24 19:56:21,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b195a5a74/99934aa8250b4a9fb3c645dac6fb05fb/FLAGbc6843988 [2021-03-24 19:56:21,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b195a5a74/99934aa8250b4a9fb3c645dac6fb05fb [2021-03-24 19:56:21,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:56:21,450 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:56:21,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:56:21,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:56:21,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:56:21,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba0a77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21, skipping insertion in model container [2021-03-24 19:56:21,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:56:21,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:56:21,598 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/safe026_tso.oepc.i[950,963] [2021-03-24 19:56:21,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:56:21,719 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:56:21,726 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/safe026_tso.oepc.i[950,963] [2021-03-24 19:56:21,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:56:21,809 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:56:21,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21 WrapperNode [2021-03-24 19:56:21,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:56:21,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:56:21,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:56:21,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:56:21,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:56:21,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:56:21,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:56:21,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:56:21,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... [2021-03-24 19:56:21,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:56:21,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:56:21,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:56:21,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:56:21,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:56:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:56:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:56:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:56:21,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:56:21,926 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:56:21,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:56:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:56:21,927 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:56:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:56:21,927 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:56:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:56:21,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:56:21,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:56:21,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:56:21,929 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:56:22,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:56:22,222 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:56:22,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:56:22 BoogieIcfgContainer [2021-03-24 19:56:22,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:56:22,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:56:22,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:56:22,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:56:22,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:56:21" (1/3) ... [2021-03-24 19:56:22,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bff9b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:56:22, skipping insertion in model container [2021-03-24 19:56:22,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:21" (2/3) ... [2021-03-24 19:56:22,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bff9b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:56:22, skipping insertion in model container [2021-03-24 19:56:22,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:56:22" (3/3) ... [2021-03-24 19:56:22,229 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2021-03-24 19:56:22,233 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:56:22,235 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:56:22,236 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:56:22,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,262 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,262 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,264 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,264 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,265 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,265 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,266 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,266 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,268 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,268 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,269 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,269 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,271 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,271 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,278 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,279 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,279 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,279 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:22,280 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:56:22,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:56:22,313 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:56:22,313 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:56:22,313 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:56:22,313 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:56:22,313 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:56:22,313 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:56:22,313 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:56:22,313 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:56:22,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-24 19:56:22,361 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-24 19:56:22,361 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:22,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-24 19:56:22,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-24 19:56:22,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-24 19:56:22,373 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:56:22,389 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-24 19:56:22,390 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-24 19:56:22,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-24 19:56:22,403 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-24 19:56:22,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:22,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-24 19:56:22,405 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-24 19:56:23,755 INFO L154 LiptonReduction]: Checked pairs total: 784 [2021-03-24 19:56:23,755 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-24 19:56:23,757 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1385 [2021-03-24 19:56:23,771 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-24 19:56:23,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:23,772 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:23,772 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:23,773 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:23,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1769401119, now seen corresponding path program 1 times [2021-03-24 19:56:23,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:23,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963452404] [2021-03-24 19:56:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:23,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:23,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:23,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:23,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:23,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963452404] [2021-03-24 19:56:23,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:23,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:56:23,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682233106] [2021-03-24 19:56:23,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:56:23,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:23,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:56:23,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:56:23,953 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 110 [2021-03-24 19:56:23,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:23,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:23,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 110 [2021-03-24 19:56:23,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:23,991 INFO L129 PetriNetUnfolder]: 12/55 cut-off events. [2021-03-24 19:56:23,995 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:23,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 55 events. 12/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 149 event pairs, 6 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 79. Up to 25 conditions per place. [2021-03-24 19:56:23,997 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 5 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-03-24 19:56:23,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 73 flow [2021-03-24 19:56:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:56:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:56:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-03-24 19:56:24,009 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8909090909090909 [2021-03-24 19:56:24,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-03-24 19:56:24,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-03-24 19:56:24,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:24,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-03-24 19:56:24,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,023 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 3 states and 294 transitions. [2021-03-24 19:56:24,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 73 flow [2021-03-24 19:56:24,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 70 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:56:24,032 INFO L241 Difference]: Finished difference. Result has 31 places, 23 transitions, 67 flow [2021-03-24 19:56:24,033 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2021-03-24 19:56:24,033 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-24 19:56:24,033 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 67 flow [2021-03-24 19:56:24,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:24,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:24,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:56:24,034 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:24,035 INFO L82 PathProgramCache]: Analyzing trace with hash -983140600, now seen corresponding path program 1 times [2021-03-24 19:56:24,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:24,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325009575] [2021-03-24 19:56:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:24,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:24,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:24,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325009575] [2021-03-24 19:56:24,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:24,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:56:24,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271815745] [2021-03-24 19:56:24,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:56:24,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:24,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:56:24,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:56:24,087 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 110 [2021-03-24 19:56:24,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:24,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 110 [2021-03-24 19:56:24,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:24,094 INFO L129 PetriNetUnfolder]: 3/29 cut-off events. [2021-03-24 19:56:24,095 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 19:56:24,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 29 events. 3/29 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 43. Up to 10 conditions per place. [2021-03-24 19:56:24,095 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 1 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2021-03-24 19:56:24,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 73 flow [2021-03-24 19:56:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:56:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:56:24,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-03-24 19:56:24,096 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9030303030303031 [2021-03-24 19:56:24,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-03-24 19:56:24,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-03-24 19:56:24,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:24,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-03-24 19:56:24,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,098 INFO L185 Difference]: Start difference. First operand has 31 places, 23 transitions, 67 flow. Second operand 3 states and 298 transitions. [2021-03-24 19:56:24,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 73 flow [2021-03-24 19:56:24,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:56:24,099 INFO L241 Difference]: Finished difference. Result has 33 places, 23 transitions, 72 flow [2021-03-24 19:56:24,099 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2021-03-24 19:56:24,100 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2021-03-24 19:56:24,100 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 72 flow [2021-03-24 19:56:24,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,100 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:24,100 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:24,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:56:24,100 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:24,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:24,101 INFO L82 PathProgramCache]: Analyzing trace with hash -510413925, now seen corresponding path program 1 times [2021-03-24 19:56:24,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:24,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883727728] [2021-03-24 19:56:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:24,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:24,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,149 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:56:24,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:56:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:24,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883727728] [2021-03-24 19:56:24,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:24,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:56:24,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731515319] [2021-03-24 19:56:24,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:56:24,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:24,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:56:24,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:56:24,165 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-03-24 19:56:24,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 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) [2021-03-24 19:56:24,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:24,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-03-24 19:56:24,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:24,213 INFO L129 PetriNetUnfolder]: 15/75 cut-off events. [2021-03-24 19:56:24,213 INFO L130 PetriNetUnfolder]: For 52/124 co-relation queries the response was YES. [2021-03-24 19:56:24,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 75 events. 15/75 cut-off events. For 52/124 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 287 event pairs, 3 based on Foata normal form. 9/81 useless extension candidates. Maximal degree in co-relation 156. Up to 27 conditions per place. [2021-03-24 19:56:24,214 INFO L132 encePairwiseOnDemand]: 103/110 looper letters, 5 selfloop transitions, 7 changer transitions 3/29 dead transitions. [2021-03-24 19:56:24,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 121 flow [2021-03-24 19:56:24,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:56:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:56:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2021-03-24 19:56:24,215 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8490909090909091 [2021-03-24 19:56:24,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2021-03-24 19:56:24,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2021-03-24 19:56:24,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:24,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2021-03-24 19:56:24,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,219 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,221 INFO L185 Difference]: Start difference. First operand has 33 places, 23 transitions, 72 flow. Second operand 5 states and 467 transitions. [2021-03-24 19:56:24,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 121 flow [2021-03-24 19:56:24,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 115 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:56:24,223 INFO L241 Difference]: Finished difference. Result has 38 places, 25 transitions, 107 flow [2021-03-24 19:56:24,224 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2021-03-24 19:56:24,224 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-24 19:56:24,224 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 107 flow [2021-03-24 19:56:24,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 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) [2021-03-24 19:56:24,224 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:24,224 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:24,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:56:24,224 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:24,225 INFO L82 PathProgramCache]: Analyzing trace with hash 588619615, now seen corresponding path program 2 times [2021-03-24 19:56:24,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:24,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449411231] [2021-03-24 19:56:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:24,286 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:56:24,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:56:24,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:24,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449411231] [2021-03-24 19:56:24,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:24,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:56:24,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716825769] [2021-03-24 19:56:24,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:56:24,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:24,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:56:24,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:56:24,305 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-24 19:56:24,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:24,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-24 19:56:24,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:24,389 INFO L129 PetriNetUnfolder]: 167/323 cut-off events. [2021-03-24 19:56:24,389 INFO L130 PetriNetUnfolder]: For 168/176 co-relation queries the response was YES. [2021-03-24 19:56:24,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 323 events. 167/323 cut-off events. For 168/176 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1606 event pairs, 30 based on Foata normal form. 19/312 useless extension candidates. Maximal degree in co-relation 725. Up to 146 conditions per place. [2021-03-24 19:56:24,392 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 9 selfloop transitions, 9 changer transitions 5/40 dead transitions. [2021-03-24 19:56:24,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 183 flow [2021-03-24 19:56:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:56:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:56:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-24 19:56:24,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.787012987012987 [2021-03-24 19:56:24,394 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-24 19:56:24,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-24 19:56:24,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:24,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-24 19:56:24,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,397 INFO L185 Difference]: Start difference. First operand has 38 places, 25 transitions, 107 flow. Second operand 7 states and 606 transitions. [2021-03-24 19:56:24,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 183 flow [2021-03-24 19:56:24,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 173 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 19:56:24,400 INFO L241 Difference]: Finished difference. Result has 46 places, 32 transitions, 163 flow [2021-03-24 19:56:24,400 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2021-03-24 19:56:24,400 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2021-03-24 19:56:24,400 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 163 flow [2021-03-24 19:56:24,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:24,400 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:24,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:56:24,401 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash 102116354, now seen corresponding path program 1 times [2021-03-24 19:56:24,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:24,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561859202] [2021-03-24 19:56:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:24,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:24,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,447 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:56:24,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:56:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:24,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561859202] [2021-03-24 19:56:24,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:24,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:24,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935357767] [2021-03-24 19:56:24,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:24,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:24,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:24,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:24,460 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-03-24 19:56:24,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:24,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-03-24 19:56:24,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:24,502 INFO L129 PetriNetUnfolder]: 82/232 cut-off events. [2021-03-24 19:56:24,502 INFO L130 PetriNetUnfolder]: For 317/443 co-relation queries the response was YES. [2021-03-24 19:56:24,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 232 events. 82/232 cut-off events. For 317/443 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1308 event pairs, 33 based on Foata normal form. 23/218 useless extension candidates. Maximal degree in co-relation 707. Up to 135 conditions per place. [2021-03-24 19:56:24,505 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 7 selfloop transitions, 5 changer transitions 2/34 dead transitions. [2021-03-24 19:56:24,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 34 transitions, 199 flow [2021-03-24 19:56:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:56:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:56:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-03-24 19:56:24,507 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8454545454545455 [2021-03-24 19:56:24,507 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-03-24 19:56:24,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-03-24 19:56:24,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:24,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-03-24 19:56:24,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,509 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,509 INFO L185 Difference]: Start difference. First operand has 46 places, 32 transitions, 163 flow. Second operand 4 states and 372 transitions. [2021-03-24 19:56:24,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 34 transitions, 199 flow [2021-03-24 19:56:24,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:56:24,513 INFO L241 Difference]: Finished difference. Result has 49 places, 30 transitions, 164 flow [2021-03-24 19:56:24,513 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=30} [2021-03-24 19:56:24,513 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-24 19:56:24,513 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 30 transitions, 164 flow [2021-03-24 19:56:24,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,513 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:24,513 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:24,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:56:24,514 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:24,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:24,514 INFO L82 PathProgramCache]: Analyzing trace with hash 986680036, now seen corresponding path program 1 times [2021-03-24 19:56:24,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:24,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363384140] [2021-03-24 19:56:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:24,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,559 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:56:24,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:56:24,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:24,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363384140] [2021-03-24 19:56:24,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:24,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:56:24,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130183040] [2021-03-24 19:56:24,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:56:24,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:24,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:56:24,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:56:24,582 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-24 19:56:24,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 30 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:24,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-24 19:56:24,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:24,668 INFO L129 PetriNetUnfolder]: 128/294 cut-off events. [2021-03-24 19:56:24,668 INFO L130 PetriNetUnfolder]: For 555/802 co-relation queries the response was YES. [2021-03-24 19:56:24,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1139 conditions, 294 events. 128/294 cut-off events. For 555/802 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 1606 event pairs, 1 based on Foata normal form. 47/318 useless extension candidates. Maximal degree in co-relation 1112. Up to 182 conditions per place. [2021-03-24 19:56:24,669 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 8 selfloop transitions, 9 changer transitions 14/46 dead transitions. [2021-03-24 19:56:24,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 315 flow [2021-03-24 19:56:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:56:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:56:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 777 transitions. [2021-03-24 19:56:24,672 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7848484848484848 [2021-03-24 19:56:24,672 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 777 transitions. [2021-03-24 19:56:24,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 777 transitions. [2021-03-24 19:56:24,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:24,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 777 transitions. [2021-03-24 19:56:24,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.33333333333333) internal successors, (777), 9 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,675 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,675 INFO L185 Difference]: Start difference. First operand has 49 places, 30 transitions, 164 flow. Second operand 9 states and 777 transitions. [2021-03-24 19:56:24,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 315 flow [2021-03-24 19:56:24,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 306 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 19:56:24,678 INFO L241 Difference]: Finished difference. Result has 59 places, 29 transitions, 200 flow [2021-03-24 19:56:24,679 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=59, PETRI_TRANSITIONS=29} [2021-03-24 19:56:24,679 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2021-03-24 19:56:24,679 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 29 transitions, 200 flow [2021-03-24 19:56:24,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,679 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:24,679 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:24,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:56:24,679 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:24,680 INFO L82 PathProgramCache]: Analyzing trace with hash -323043089, now seen corresponding path program 1 times [2021-03-24 19:56:24,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:24,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266353504] [2021-03-24 19:56:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:24,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,725 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:56:24,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:56:24,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:24,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266353504] [2021-03-24 19:56:24,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:24,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:56:24,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740878101] [2021-03-24 19:56:24,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:56:24,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:24,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:56:24,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:56:24,750 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-24 19:56:24,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 29 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:24,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-24 19:56:24,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:24,818 INFO L129 PetriNetUnfolder]: 21/81 cut-off events. [2021-03-24 19:56:24,818 INFO L130 PetriNetUnfolder]: For 437/497 co-relation queries the response was YES. [2021-03-24 19:56:24,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 81 events. 21/81 cut-off events. For 437/497 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 272 event pairs, 0 based on Foata normal form. 31/109 useless extension candidates. Maximal degree in co-relation 391. Up to 44 conditions per place. [2021-03-24 19:56:24,819 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 2 selfloop transitions, 12 changer transitions 8/35 dead transitions. [2021-03-24 19:56:24,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 35 transitions, 294 flow [2021-03-24 19:56:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:56:24,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:56:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 769 transitions. [2021-03-24 19:56:24,821 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7767676767676768 [2021-03-24 19:56:24,821 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 769 transitions. [2021-03-24 19:56:24,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 769 transitions. [2021-03-24 19:56:24,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:24,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 769 transitions. [2021-03-24 19:56:24,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.44444444444444) internal successors, (769), 9 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,825 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,825 INFO L185 Difference]: Start difference. First operand has 59 places, 29 transitions, 200 flow. Second operand 9 states and 769 transitions. [2021-03-24 19:56:24,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 35 transitions, 294 flow [2021-03-24 19:56:24,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 35 transitions, 219 flow, removed 23 selfloop flow, removed 11 redundant places. [2021-03-24 19:56:24,827 INFO L241 Difference]: Finished difference. Result has 55 places, 27 transitions, 170 flow [2021-03-24 19:56:24,827 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=27} [2021-03-24 19:56:24,828 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2021-03-24 19:56:24,828 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 27 transitions, 170 flow [2021-03-24 19:56:24,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,828 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:24,828 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:24,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:56:24,828 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1492256644, now seen corresponding path program 1 times [2021-03-24 19:56:24,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:24,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862453930] [2021-03-24 19:56:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:24,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:24,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,872 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:56:24,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:56:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:24,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862453930] [2021-03-24 19:56:24,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:24,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:56:24,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480638637] [2021-03-24 19:56:24,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:56:24,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:24,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:56:24,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:56:24,883 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-03-24 19:56:24,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 27 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:24,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-03-24 19:56:24,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:24,903 INFO L129 PetriNetUnfolder]: 12/52 cut-off events. [2021-03-24 19:56:24,903 INFO L130 PetriNetUnfolder]: For 123/131 co-relation queries the response was YES. [2021-03-24 19:56:24,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 52 events. 12/52 cut-off events. For 123/131 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 102 event pairs, 0 based on Foata normal form. 3/54 useless extension candidates. Maximal degree in co-relation 185. Up to 23 conditions per place. [2021-03-24 19:56:24,904 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 4 selfloop transitions, 3 changer transitions 4/31 dead transitions. [2021-03-24 19:56:24,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 31 transitions, 209 flow [2021-03-24 19:56:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:56:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:56:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 552 transitions. [2021-03-24 19:56:24,905 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8363636363636363 [2021-03-24 19:56:24,905 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 552 transitions. [2021-03-24 19:56:24,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 552 transitions. [2021-03-24 19:56:24,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:24,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 552 transitions. [2021-03-24 19:56:24,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,908 INFO L185 Difference]: Start difference. First operand has 55 places, 27 transitions, 170 flow. Second operand 6 states and 552 transitions. [2021-03-24 19:56:24,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 31 transitions, 209 flow [2021-03-24 19:56:24,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 116 flow, removed 20 selfloop flow, removed 19 redundant places. [2021-03-24 19:56:24,909 INFO L241 Difference]: Finished difference. Result has 40 places, 27 transitions, 96 flow [2021-03-24 19:56:24,910 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2021-03-24 19:56:24,910 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-24 19:56:24,910 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 96 flow [2021-03-24 19:56:24,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,910 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:24,910 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:24,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:56:24,910 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:24,911 INFO L82 PathProgramCache]: Analyzing trace with hash 988929154, now seen corresponding path program 2 times [2021-03-24 19:56:24,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:24,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845345813] [2021-03-24 19:56:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:24,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:24,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:24,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:24,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845345813] [2021-03-24 19:56:24,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:24,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:24,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48712186] [2021-03-24 19:56:24,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:24,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:24,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:24,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:24,944 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 110 [2021-03-24 19:56:24,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:24,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 110 [2021-03-24 19:56:24,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:24,952 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-24 19:56:24,952 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2021-03-24 19:56:24,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 29 events. 5/29 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 59. Up to 6 conditions per place. [2021-03-24 19:56:24,958 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 19:56:24,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 100 flow [2021-03-24 19:56:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:56:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:56:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2021-03-24 19:56:24,959 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-03-24 19:56:24,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2021-03-24 19:56:24,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2021-03-24 19:56:24,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:24,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2021-03-24 19:56:24,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,961 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,961 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 96 flow. Second operand 4 states and 385 transitions. [2021-03-24 19:56:24,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 100 flow [2021-03-24 19:56:24,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 26 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:56:24,962 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-24 19:56:24,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-24 19:56:24,962 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2021-03-24 19:56:24,962 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2021-03-24 19:56:24,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:24,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:56:24,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:56:24 BasicIcfg [2021-03-24 19:56:24,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:56:24,966 INFO L168 Benchmark]: Toolchain (without parser) took 3515.40 ms. Allocated memory was 255.9 MB in the beginning and 421.5 MB in the end (delta: 165.7 MB). Free memory was 234.9 MB in the beginning and 345.7 MB in the end (delta: -110.7 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:24,966 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:56:24,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.73 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 234.9 MB in the beginning and 312.6 MB in the end (delta: -77.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:24,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.26 ms. Allocated memory is still 350.2 MB. Free memory was 312.6 MB in the beginning and 310.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:24,970 INFO L168 Benchmark]: Boogie Preprocessor took 25.90 ms. Allocated memory is still 350.2 MB. Free memory was 310.5 MB in the beginning and 309.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:24,970 INFO L168 Benchmark]: RCFGBuilder took 342.84 ms. Allocated memory is still 350.2 MB. Free memory was 309.0 MB in the beginning and 287.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:24,970 INFO L168 Benchmark]: TraceAbstraction took 2740.32 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 286.7 MB in the beginning and 345.7 MB in the end (delta: -59.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:24,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 358.73 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 234.9 MB in the beginning and 312.6 MB in the end (delta: -77.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.26 ms. Allocated memory is still 350.2 MB. Free memory was 312.6 MB in the beginning and 310.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.90 ms. Allocated memory is still 350.2 MB. Free memory was 310.5 MB in the beginning and 309.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 342.84 ms. Allocated memory is still 350.2 MB. Free memory was 309.0 MB in the beginning and 287.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2740.32 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 286.7 MB in the beginning and 345.7 MB in the end (delta: -59.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1364.6ms, 67 PlacesBefore, 31 PlacesAfterwards, 58 TransitionsBefore, 21 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 784 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 618, positive: 594, positive conditional: 0, positive unconditional: 594, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 506, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 506, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 506, positive: 481, positive conditional: 0, positive unconditional: 481, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 90, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 618, positive: 106, positive conditional: 0, positive unconditional: 106, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 506, unknown conditional: 0, unknown unconditional: 506] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2653.5ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 531.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1450.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 41 SDslu, 43 SDs, 0 SdLazy, 143 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 198.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=6, InterpolantAutomatonStates: 50, 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: 15.3ms SsaConstructionTime, 102.9ms SatisfiabilityAnalysisTime, 400.9ms InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 497 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...