/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 00:26:35,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 00:26:35,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 00:26:35,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 00:26:35,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 00:26:35,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 00:26:35,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 00:26:35,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 00:26:35,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 00:26:35,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 00:26:35,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 00:26:35,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 00:26:35,686 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 00:26:35,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 00:26:35,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 00:26:35,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 00:26:35,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 00:26:35,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 00:26:35,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 00:26:35,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 00:26:35,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 00:26:35,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 00:26:35,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 00:26:35,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 00:26:35,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 00:26:35,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 00:26:35,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 00:26:35,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 00:26:35,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 00:26:35,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:26:35,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 00:26:35,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 00:26:35,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 00:26:35,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 00:26:35,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 00:26:35,693 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 00:26:35,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 00:26:35,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 00:26:35,694 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 00:26:36,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 00:26:36,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 00:26:36,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 00:26:36,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 00:26:36,138 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 00:26:36,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2021-04-29 00:26:36,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754f1d662/fac27980999e4ccca98283b1c9c67150/FLAG9b6c366f2 [2021-04-29 00:26:37,014 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 00:26:37,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2021-04-29 00:26:37,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754f1d662/fac27980999e4ccca98283b1c9c67150/FLAG9b6c366f2 [2021-04-29 00:26:37,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754f1d662/fac27980999e4ccca98283b1c9c67150 [2021-04-29 00:26:37,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 00:26:37,334 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 00:26:37,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 00:26:37,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 00:26:37,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 00:26:37,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:26:37" (1/1) ... [2021-04-29 00:26:37,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea25055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:37, skipping insertion in model container [2021-04-29 00:26:37,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:26:37" (1/1) ... [2021-04-29 00:26:37,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 00:26:37,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 00:26:37,667 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/safe025_tso.oepc.i[950,963] [2021-04-29 00:26:37,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:26:37,923 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 00:26:37,940 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/safe025_tso.oepc.i[950,963] [2021-04-29 00:26:37,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:26:38,146 INFO L208 MainTranslator]: Completed translation [2021-04-29 00:26:38,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38 WrapperNode [2021-04-29 00:26:38,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 00:26:38,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 00:26:38,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 00:26:38,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 00:26:38,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... [2021-04-29 00:26:38,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... [2021-04-29 00:26:38,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 00:26:38,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 00:26:38,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 00:26:38,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 00:26:38,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... [2021-04-29 00:26:38,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... [2021-04-29 00:26:38,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... [2021-04-29 00:26:38,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... [2021-04-29 00:26:38,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... [2021-04-29 00:26:38,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... [2021-04-29 00:26:38,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... [2021-04-29 00:26:38,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 00:26:38,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 00:26:38,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 00:26:38,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 00:26:38,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:26:38,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 00:26:38,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 00:26:38,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 00:26:38,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 00:26:38,354 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-29 00:26:38,354 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-29 00:26:38,354 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-29 00:26:38,355 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-29 00:26:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-29 00:26:38,355 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-29 00:26:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 00:26:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 00:26:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 00:26:38,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 00:26:38,357 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 00:26:38,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 00:26:38,735 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-29 00:26:38,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:26:38 BoogieIcfgContainer [2021-04-29 00:26:38,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 00:26:38,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 00:26:38,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 00:26:38,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 00:26:38,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 12:26:37" (1/3) ... [2021-04-29 00:26:38,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bd4d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:26:38, skipping insertion in model container [2021-04-29 00:26:38,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:26:38" (2/3) ... [2021-04-29 00:26:38,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bd4d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:26:38, skipping insertion in model container [2021-04-29 00:26:38,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:26:38" (3/3) ... [2021-04-29 00:26:38,750 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2021-04-29 00:26:38,757 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 00:26:38,763 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 00:26:38,764 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 00:26:38,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,807 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,807 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,808 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,808 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,816 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,816 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,837 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,837 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,843 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,844 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,847 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,847 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,847 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,848 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:26:38,850 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 00:26:38,881 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 00:26:38,911 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 00:26:38,912 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 00:26:38,912 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 00:26:38,912 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 00:26:38,912 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 00:26:38,912 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 00:26:38,912 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 00:26:38,913 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 00:26:38,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-04-29 00:26:39,015 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-04-29 00:26:39,015 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:26:39,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-04-29 00:26:39,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-04-29 00:26:39,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-04-29 00:26:39,043 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:26:39,075 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-29 00:26:39,085 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-29 00:26:39,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-04-29 00:26:39,149 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-04-29 00:26:39,149 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:26:39,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-04-29 00:26:39,157 INFO L146 LiptonReduction]: Number of co-enabled transitions 864 [2021-04-29 00:26:43,183 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:26:43,854 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:26:44,002 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:26:44,175 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:26:44,351 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:26:44,681 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:26:45,538 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-29 00:26:45,812 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-29 00:26:46,854 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-29 00:26:47,106 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-29 00:26:47,460 INFO L158 LiptonReduction]: Checked pairs total: 5474 [2021-04-29 00:26:47,460 INFO L160 LiptonReduction]: Total number of compositions: 87 [2021-04-29 00:26:47,465 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8425 [2021-04-29 00:26:47,487 INFO L129 PetriNetUnfolder]: 0/64 cut-off events. [2021-04-29 00:26:47,487 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:26:47,488 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:26:47,489 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:26:47,489 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:26:47,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:26:47,496 INFO L82 PathProgramCache]: Analyzing trace with hash 180717998, now seen corresponding path program 1 times [2021-04-29 00:26:47,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:26:47,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885210707] [2021-04-29 00:26:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:26:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:26:47,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:47,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:26:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:26:47,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885210707] [2021-04-29 00:26:47,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:26:47,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:26:47,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050988527] [2021-04-29 00:26:47,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:26:47,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:26:47,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:26:47,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:26:47,856 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 162 [2021-04-29 00:26:47,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:47,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:26:47,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 162 [2021-04-29 00:26:47,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:26:48,029 INFO L129 PetriNetUnfolder]: 133/506 cut-off events. [2021-04-29 00:26:48,029 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:26:48,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 506 events. 133/506 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4025 event pairs, 79 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 707. Up to 177 conditions per place. [2021-04-29 00:26:48,035 INFO L132 encePairwiseOnDemand]: 151/162 looper letters, 6 selfloop transitions, 2 changer transitions 34/75 dead transitions. [2021-04-29 00:26:48,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 211 flow [2021-04-29 00:26:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:26:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:26:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2021-04-29 00:26:48,056 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8168724279835391 [2021-04-29 00:26:48,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2021-04-29 00:26:48,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2021-04-29 00:26:48,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:26:48,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2021-04-29 00:26:48,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,089 INFO L185 Difference]: Start difference. First operand has 78 places, 68 transitions, 145 flow. Second operand 3 states and 397 transitions. [2021-04-29 00:26:48,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 211 flow [2021-04-29 00:26:48,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 00:26:48,097 INFO L241 Difference]: Finished difference. Result has 78 places, 39 transitions, 92 flow [2021-04-29 00:26:48,100 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=78, PETRI_TRANSITIONS=39} [2021-04-29 00:26:48,101 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2021-04-29 00:26:48,101 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:26:48,102 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 39 transitions, 92 flow [2021-04-29 00:26:48,102 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 39 transitions, 92 flow [2021-04-29 00:26:48,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 39 transitions, 92 flow [2021-04-29 00:26:48,108 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-04-29 00:26:48,109 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:26:48,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 153 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:26:48,110 INFO L146 LiptonReduction]: Number of co-enabled transitions 800 [2021-04-29 00:26:48,137 INFO L158 LiptonReduction]: Checked pairs total: 640 [2021-04-29 00:26:48,138 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:26:48,138 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-04-29 00:26:48,140 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 92 flow [2021-04-29 00:26:48,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:26:48,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:26:48,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 00:26:48,142 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:26:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:26:48,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1273325152, now seen corresponding path program 1 times [2021-04-29 00:26:48,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:26:48,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831149072] [2021-04-29 00:26:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:26:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:26:48,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:48,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:26:48,246 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-29 00:26:48,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 00:26:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:26:48,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831149072] [2021-04-29 00:26:48,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:26:48,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:26:48,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388904498] [2021-04-29 00:26:48,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:26:48,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:26:48,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:26:48,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:26:48,270 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 162 [2021-04-29 00:26:48,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:26:48,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 162 [2021-04-29 00:26:48,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:26:48,340 INFO L129 PetriNetUnfolder]: 35/178 cut-off events. [2021-04-29 00:26:48,340 INFO L130 PetriNetUnfolder]: For 25/27 co-relation queries the response was YES. [2021-04-29 00:26:48,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 178 events. 35/178 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1014 event pairs, 9 based on Foata normal form. 8/118 useless extension candidates. Maximal degree in co-relation 282. Up to 53 conditions per place. [2021-04-29 00:26:48,343 INFO L132 encePairwiseOnDemand]: 155/162 looper letters, 6 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2021-04-29 00:26:48,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 129 flow [2021-04-29 00:26:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:26:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:26:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2021-04-29 00:26:48,348 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6810699588477366 [2021-04-29 00:26:48,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2021-04-29 00:26:48,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2021-04-29 00:26:48,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:26:48,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2021-04-29 00:26:48,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,354 INFO L185 Difference]: Start difference. First operand has 49 places, 39 transitions, 92 flow. Second operand 3 states and 331 transitions. [2021-04-29 00:26:48,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 129 flow [2021-04-29 00:26:48,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:26:48,356 INFO L241 Difference]: Finished difference. Result has 51 places, 44 transitions, 135 flow [2021-04-29 00:26:48,357 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2021-04-29 00:26:48,357 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -27 predicate places. [2021-04-29 00:26:48,358 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:26:48,358 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 44 transitions, 135 flow [2021-04-29 00:26:48,358 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 44 transitions, 135 flow [2021-04-29 00:26:48,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 44 transitions, 135 flow [2021-04-29 00:26:48,377 INFO L129 PetriNetUnfolder]: 35/166 cut-off events. [2021-04-29 00:26:48,377 INFO L130 PetriNetUnfolder]: For 24/25 co-relation queries the response was YES. [2021-04-29 00:26:48,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 166 events. 35/166 cut-off events. For 24/25 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 948 event pairs, 12 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 298. Up to 53 conditions per place. [2021-04-29 00:26:48,383 INFO L146 LiptonReduction]: Number of co-enabled transitions 980 [2021-04-29 00:26:48,391 INFO L158 LiptonReduction]: Checked pairs total: 93 [2021-04-29 00:26:48,392 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:26:48,392 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-04-29 00:26:48,394 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 135 flow [2021-04-29 00:26:48,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,395 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:26:48,395 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:26:48,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 00:26:48,395 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:26:48,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:26:48,396 INFO L82 PathProgramCache]: Analyzing trace with hash 769632222, now seen corresponding path program 1 times [2021-04-29 00:26:48,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:26:48,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852218634] [2021-04-29 00:26:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:26:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:26:48,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:48,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:26:48,527 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-29 00:26:48,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 00:26:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:26:48,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852218634] [2021-04-29 00:26:48,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:26:48,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:26:48,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549784506] [2021-04-29 00:26:48,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:26:48,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:26:48,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:26:48,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:26:48,542 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 162 [2021-04-29 00:26:48,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:26:48,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 162 [2021-04-29 00:26:48,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:26:48,621 INFO L129 PetriNetUnfolder]: 32/151 cut-off events. [2021-04-29 00:26:48,622 INFO L130 PetriNetUnfolder]: For 37/51 co-relation queries the response was YES. [2021-04-29 00:26:48,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 151 events. 32/151 cut-off events. For 37/51 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 767 event pairs, 5 based on Foata normal form. 3/100 useless extension candidates. Maximal degree in co-relation 343. Up to 48 conditions per place. [2021-04-29 00:26:48,624 INFO L132 encePairwiseOnDemand]: 155/162 looper letters, 9 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2021-04-29 00:26:48,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 188 flow [2021-04-29 00:26:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:26:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:26:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 439 transitions. [2021-04-29 00:26:48,628 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6774691358024691 [2021-04-29 00:26:48,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 439 transitions. [2021-04-29 00:26:48,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 439 transitions. [2021-04-29 00:26:48,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:26:48,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 439 transitions. [2021-04-29 00:26:48,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,635 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,635 INFO L185 Difference]: Start difference. First operand has 51 places, 44 transitions, 135 flow. Second operand 4 states and 439 transitions. [2021-04-29 00:26:48,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 188 flow [2021-04-29 00:26:48,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:26:48,639 INFO L241 Difference]: Finished difference. Result has 55 places, 46 transitions, 165 flow [2021-04-29 00:26:48,640 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2021-04-29 00:26:48,640 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -23 predicate places. [2021-04-29 00:26:48,640 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:26:48,640 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 46 transitions, 165 flow [2021-04-29 00:26:48,641 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 46 transitions, 165 flow [2021-04-29 00:26:48,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 165 flow [2021-04-29 00:26:48,659 INFO L129 PetriNetUnfolder]: 32/157 cut-off events. [2021-04-29 00:26:48,659 INFO L130 PetriNetUnfolder]: For 79/81 co-relation queries the response was YES. [2021-04-29 00:26:48,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 157 events. 32/157 cut-off events. For 79/81 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 862 event pairs, 13 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 322. Up to 48 conditions per place. [2021-04-29 00:26:48,665 INFO L146 LiptonReduction]: Number of co-enabled transitions 1042 [2021-04-29 00:26:48,672 INFO L158 LiptonReduction]: Checked pairs total: 133 [2021-04-29 00:26:48,672 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:26:48,672 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-04-29 00:26:48,674 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 165 flow [2021-04-29 00:26:48,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,675 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:26:48,675 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:26:48,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 00:26:48,675 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:26:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:26:48,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1870275132, now seen corresponding path program 1 times [2021-04-29 00:26:48,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:26:48,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574837137] [2021-04-29 00:26:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:26:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:26:48,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:48,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:26:48,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:48,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:26:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:26:48,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574837137] [2021-04-29 00:26:48,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:26:48,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:26:48,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707482952] [2021-04-29 00:26:48,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:26:48,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:26:48,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:26:48,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:26:48,739 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 162 [2021-04-29 00:26:48,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:26:48,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 162 [2021-04-29 00:26:48,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:26:48,769 INFO L129 PetriNetUnfolder]: 23/127 cut-off events. [2021-04-29 00:26:48,770 INFO L130 PetriNetUnfolder]: For 107/128 co-relation queries the response was YES. [2021-04-29 00:26:48,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 127 events. 23/127 cut-off events. For 107/128 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 630 event pairs, 2 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 301. Up to 35 conditions per place. [2021-04-29 00:26:48,772 INFO L132 encePairwiseOnDemand]: 159/162 looper letters, 10 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2021-04-29 00:26:48,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 215 flow [2021-04-29 00:26:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:26:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:26:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2021-04-29 00:26:48,775 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-04-29 00:26:48,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2021-04-29 00:26:48,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2021-04-29 00:26:48,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:26:48,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2021-04-29 00:26:48,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,781 INFO L185 Difference]: Start difference. First operand has 55 places, 46 transitions, 165 flow. Second operand 3 states and 378 transitions. [2021-04-29 00:26:48,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 215 flow [2021-04-29 00:26:48,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 00:26:48,785 INFO L241 Difference]: Finished difference. Result has 57 places, 46 transitions, 179 flow [2021-04-29 00:26:48,785 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2021-04-29 00:26:48,786 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -21 predicate places. [2021-04-29 00:26:48,786 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:26:48,786 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 46 transitions, 179 flow [2021-04-29 00:26:48,786 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 46 transitions, 179 flow [2021-04-29 00:26:48,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 46 transitions, 179 flow [2021-04-29 00:26:48,803 INFO L129 PetriNetUnfolder]: 23/142 cut-off events. [2021-04-29 00:26:48,803 INFO L130 PetriNetUnfolder]: For 102/105 co-relation queries the response was YES. [2021-04-29 00:26:48,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 142 events. 23/142 cut-off events. For 102/105 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 792 event pairs, 5 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 306. Up to 35 conditions per place. [2021-04-29 00:26:48,808 INFO L146 LiptonReduction]: Number of co-enabled transitions 1042 [2021-04-29 00:26:48,815 INFO L158 LiptonReduction]: Checked pairs total: 133 [2021-04-29 00:26:48,815 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:26:48,816 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-04-29 00:26:48,817 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 179 flow [2021-04-29 00:26:48,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,818 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:26:48,818 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:26:48,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 00:26:48,819 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:26:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:26:48,819 INFO L82 PathProgramCache]: Analyzing trace with hash 2143041388, now seen corresponding path program 1 times [2021-04-29 00:26:48,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:26:48,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713750213] [2021-04-29 00:26:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:26:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:26:48,939 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-29 00:26:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-29 00:26:48,949 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:26:48,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:26:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:26:48,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713750213] [2021-04-29 00:26:48,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:26:48,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:26:48,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703704524] [2021-04-29 00:26:48,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:26:48,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:26:48,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:26:48,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:26:48,967 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 162 [2021-04-29 00:26:48,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:48,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:26:48,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 162 [2021-04-29 00:26:48,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:26:50,555 INFO L129 PetriNetUnfolder]: 6410/10877 cut-off events. [2021-04-29 00:26:50,555 INFO L130 PetriNetUnfolder]: For 2268/3543 co-relation queries the response was YES. [2021-04-29 00:26:50,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22256 conditions, 10877 events. 6410/10877 cut-off events. For 2268/3543 co-relation queries the response was YES. Maximal size of possible extension queue 2718. Compared 102164 event pairs, 2739 based on Foata normal form. 98/2731 useless extension candidates. Maximal degree in co-relation 22240. Up to 6757 conditions per place. [2021-04-29 00:26:50,654 INFO L132 encePairwiseOnDemand]: 144/162 looper letters, 30 selfloop transitions, 28 changer transitions 0/82 dead transitions. [2021-04-29 00:26:50,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 367 flow [2021-04-29 00:26:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:26:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:26:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 581 transitions. [2021-04-29 00:26:50,659 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.717283950617284 [2021-04-29 00:26:50,659 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 581 transitions. [2021-04-29 00:26:50,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 581 transitions. [2021-04-29 00:26:50,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:26:50,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 581 transitions. [2021-04-29 00:26:50,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:50,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:50,668 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:50,669 INFO L185 Difference]: Start difference. First operand has 57 places, 46 transitions, 179 flow. Second operand 5 states and 581 transitions. [2021-04-29 00:26:50,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 367 flow [2021-04-29 00:26:50,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:26:50,676 INFO L241 Difference]: Finished difference. Result has 62 places, 72 transitions, 380 flow [2021-04-29 00:26:50,676 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=62, PETRI_TRANSITIONS=72} [2021-04-29 00:26:50,677 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -16 predicate places. [2021-04-29 00:26:50,677 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:26:50,677 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 72 transitions, 380 flow [2021-04-29 00:26:50,678 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 72 transitions, 380 flow [2021-04-29 00:26:50,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 72 transitions, 380 flow [2021-04-29 00:26:52,101 INFO L129 PetriNetUnfolder]: 5988/10247 cut-off events. [2021-04-29 00:26:52,101 INFO L130 PetriNetUnfolder]: For 3864/6321 co-relation queries the response was YES. [2021-04-29 00:26:52,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29013 conditions, 10247 events. 5988/10247 cut-off events. For 3864/6321 co-relation queries the response was YES. Maximal size of possible extension queue 2374. Compared 96171 event pairs, 2577 based on Foata normal form. 13/2978 useless extension candidates. Maximal degree in co-relation 28995. Up to 9060 conditions per place. [2021-04-29 00:26:52,383 INFO L146 LiptonReduction]: Number of co-enabled transitions 1460 [2021-04-29 00:26:52,404 INFO L158 LiptonReduction]: Checked pairs total: 168 [2021-04-29 00:26:52,405 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:26:52,405 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1728 [2021-04-29 00:26:52,408 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 72 transitions, 380 flow [2021-04-29 00:26:52,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:52,409 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:26:52,409 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:26:52,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 00:26:52,410 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:26:52,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:26:52,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2009712550, now seen corresponding path program 1 times [2021-04-29 00:26:52,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:26:52,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910241494] [2021-04-29 00:26:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:26:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:26:52,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:52,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:26:52,537 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-29 00:26:52,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-29 00:26:52,543 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:26:52,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:26:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:26:52,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910241494] [2021-04-29 00:26:52,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:26:52,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:26:52,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333791933] [2021-04-29 00:26:52,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:26:52,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:26:52,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:26:52,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:26:52,558 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 162 [2021-04-29 00:26:52,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 72 transitions, 380 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:52,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:26:52,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 162 [2021-04-29 00:26:52,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:26:54,345 INFO L129 PetriNetUnfolder]: 5831/11279 cut-off events. [2021-04-29 00:26:54,345 INFO L130 PetriNetUnfolder]: For 6482/37177 co-relation queries the response was YES. [2021-04-29 00:26:54,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42892 conditions, 11279 events. 5831/11279 cut-off events. For 6482/37177 co-relation queries the response was YES. Maximal size of possible extension queue 3069. Compared 121798 event pairs, 525 based on Foata normal form. 186/3463 useless extension candidates. Maximal degree in co-relation 42872. Up to 9918 conditions per place. [2021-04-29 00:26:54,446 INFO L132 encePairwiseOnDemand]: 144/162 looper letters, 22 selfloop transitions, 63 changer transitions 9/118 dead transitions. [2021-04-29 00:26:54,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 118 transitions, 821 flow [2021-04-29 00:26:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 00:26:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 00:26:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2021-04-29 00:26:54,450 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.718694885361552 [2021-04-29 00:26:54,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2021-04-29 00:26:54,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2021-04-29 00:26:54,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:26:54,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2021-04-29 00:26:54,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:54,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:54,460 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:54,460 INFO L185 Difference]: Start difference. First operand has 62 places, 72 transitions, 380 flow. Second operand 7 states and 815 transitions. [2021-04-29 00:26:54,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 118 transitions, 821 flow [2021-04-29 00:26:54,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 118 transitions, 821 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-29 00:26:54,548 INFO L241 Difference]: Finished difference. Result has 71 places, 107 transitions, 821 flow [2021-04-29 00:26:54,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=821, PETRI_PLACES=71, PETRI_TRANSITIONS=107} [2021-04-29 00:26:54,549 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -7 predicate places. [2021-04-29 00:26:54,549 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:26:54,549 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 107 transitions, 821 flow [2021-04-29 00:26:54,549 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 107 transitions, 821 flow [2021-04-29 00:26:54,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 107 transitions, 821 flow [2021-04-29 00:26:55,688 INFO L129 PetriNetUnfolder]: 3728/8207 cut-off events. [2021-04-29 00:26:55,689 INFO L130 PetriNetUnfolder]: For 9386/17727 co-relation queries the response was YES. [2021-04-29 00:26:55,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35346 conditions, 8207 events. 3728/8207 cut-off events. For 9386/17727 co-relation queries the response was YES. Maximal size of possible extension queue 2477. Compared 95675 event pairs, 527 based on Foata normal form. 5/2356 useless extension candidates. Maximal degree in co-relation 35323. Up to 7059 conditions per place. [2021-04-29 00:26:55,835 INFO L146 LiptonReduction]: Number of co-enabled transitions 2004 [2021-04-29 00:26:55,877 INFO L158 LiptonReduction]: Checked pairs total: 228 [2021-04-29 00:26:55,877 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:26:55,878 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1329 [2021-04-29 00:26:55,879 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 107 transitions, 821 flow [2021-04-29 00:26:55,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:55,880 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:26:55,880 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:26:55,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 00:26:55,881 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:26:55,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:26:55,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1452993777, now seen corresponding path program 1 times [2021-04-29 00:26:55,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:26:55,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563265508] [2021-04-29 00:26:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:26:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:26:55,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:55,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:26:55,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:55,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:26:55,947 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-29 00:26:55,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-29 00:26:55,958 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:26:55,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:26:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:26:55,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563265508] [2021-04-29 00:26:55,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:26:55,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:26:55,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465586348] [2021-04-29 00:26:55,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 00:26:55,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:26:55,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 00:26:55,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 00:26:55,975 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 162 [2021-04-29 00:26:55,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 107 transitions, 821 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:55,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:26:55,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 162 [2021-04-29 00:26:55,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:26:57,490 INFO L129 PetriNetUnfolder]: 3365/8138 cut-off events. [2021-04-29 00:26:57,490 INFO L130 PetriNetUnfolder]: For 14207/120299 co-relation queries the response was YES. [2021-04-29 00:26:57,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42737 conditions, 8138 events. 3365/8138 cut-off events. For 14207/120299 co-relation queries the response was YES. Maximal size of possible extension queue 2571. Compared 99421 event pairs, 3 based on Foata normal form. 225/2398 useless extension candidates. Maximal degree in co-relation 42712. Up to 6840 conditions per place. [2021-04-29 00:26:57,552 INFO L132 encePairwiseOnDemand]: 144/162 looper letters, 5 selfloop transitions, 79 changer transitions 28/136 dead transitions. [2021-04-29 00:26:57,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 136 transitions, 1263 flow [2021-04-29 00:26:57,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 00:26:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 00:26:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1031 transitions. [2021-04-29 00:26:57,558 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7071330589849109 [2021-04-29 00:26:57,558 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1031 transitions. [2021-04-29 00:26:57,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1031 transitions. [2021-04-29 00:26:57,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:26:57,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1031 transitions. [2021-04-29 00:26:57,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.55555555555556) internal successors, (1031), 9 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:57,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:57,568 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:57,568 INFO L185 Difference]: Start difference. First operand has 71 places, 107 transitions, 821 flow. Second operand 9 states and 1031 transitions. [2021-04-29 00:26:57,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 136 transitions, 1263 flow [2021-04-29 00:26:59,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 136 transitions, 1164 flow, removed 34 selfloop flow, removed 2 redundant places. [2021-04-29 00:26:59,039 INFO L241 Difference]: Finished difference. Result has 80 places, 106 transitions, 933 flow [2021-04-29 00:26:59,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=80, PETRI_TRANSITIONS=106} [2021-04-29 00:26:59,040 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2021-04-29 00:26:59,040 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:26:59,041 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 106 transitions, 933 flow [2021-04-29 00:26:59,041 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 106 transitions, 933 flow [2021-04-29 00:26:59,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 106 transitions, 933 flow [2021-04-29 00:26:59,580 INFO L129 PetriNetUnfolder]: 2072/5714 cut-off events. [2021-04-29 00:26:59,581 INFO L130 PetriNetUnfolder]: For 10010/19834 co-relation queries the response was YES. [2021-04-29 00:26:59,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28337 conditions, 5714 events. 2072/5714 cut-off events. For 10010/19834 co-relation queries the response was YES. Maximal size of possible extension queue 2352. Compared 74173 event pairs, 5 based on Foata normal form. 7/1660 useless extension candidates. Maximal degree in co-relation 28311. Up to 4320 conditions per place. [2021-04-29 00:26:59,666 INFO L146 LiptonReduction]: Number of co-enabled transitions 1948 [2021-04-29 00:26:59,716 INFO L158 LiptonReduction]: Checked pairs total: 219 [2021-04-29 00:26:59,716 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:26:59,717 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 676 [2021-04-29 00:26:59,718 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 106 transitions, 933 flow [2021-04-29 00:26:59,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:59,719 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:26:59,719 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:26:59,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 00:26:59,719 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:26:59,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:26:59,720 INFO L82 PathProgramCache]: Analyzing trace with hash -84820040, now seen corresponding path program 1 times [2021-04-29 00:26:59,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:26:59,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742248697] [2021-04-29 00:26:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:26:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:26:59,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:59,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:26:59,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:59,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:26:59,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:26:59,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:26:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:26:59,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742248697] [2021-04-29 00:26:59,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:26:59,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:26:59,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428863641] [2021-04-29 00:26:59,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:26:59,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:26:59,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:26:59,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:26:59,781 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 162 [2021-04-29 00:26:59,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 106 transitions, 933 flow. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:26:59,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:26:59,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 162 [2021-04-29 00:26:59,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:27:00,876 INFO L129 PetriNetUnfolder]: 3319/8949 cut-off events. [2021-04-29 00:27:00,876 INFO L130 PetriNetUnfolder]: For 20167/75093 co-relation queries the response was YES. [2021-04-29 00:27:00,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44467 conditions, 8949 events. 3319/8949 cut-off events. For 20167/75093 co-relation queries the response was YES. Maximal size of possible extension queue 3246. Compared 121449 event pairs, 3 based on Foata normal form. 36/2231 useless extension candidates. Maximal degree in co-relation 44439. Up to 6840 conditions per place. [2021-04-29 00:27:00,937 INFO L132 encePairwiseOnDemand]: 159/162 looper letters, 4 selfloop transitions, 1 changer transitions 18/108 dead transitions. [2021-04-29 00:27:00,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 959 flow [2021-04-29 00:27:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:27:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:27:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 474 transitions. [2021-04-29 00:27:00,941 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7314814814814815 [2021-04-29 00:27:00,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 474 transitions. [2021-04-29 00:27:00,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 474 transitions. [2021-04-29 00:27:00,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:27:00,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 474 transitions. [2021-04-29 00:27:00,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:00,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:00,946 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:00,946 INFO L185 Difference]: Start difference. First operand has 77 places, 106 transitions, 933 flow. Second operand 4 states and 474 transitions. [2021-04-29 00:27:00,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 959 flow [2021-04-29 00:27:11,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 737 flow, removed 43 selfloop flow, removed 8 redundant places. [2021-04-29 00:27:11,336 INFO L241 Difference]: Finished difference. Result has 74 places, 90 transitions, 602 flow [2021-04-29 00:27:11,336 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=602, PETRI_PLACES=74, PETRI_TRANSITIONS=90} [2021-04-29 00:27:11,336 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2021-04-29 00:27:11,336 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:27:11,337 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 90 transitions, 602 flow [2021-04-29 00:27:11,337 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 90 transitions, 602 flow [2021-04-29 00:27:11,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 90 transitions, 602 flow [2021-04-29 00:27:11,543 INFO L129 PetriNetUnfolder]: 494/2562 cut-off events. [2021-04-29 00:27:11,543 INFO L130 PetriNetUnfolder]: For 4692/7701 co-relation queries the response was YES. [2021-04-29 00:27:11,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10229 conditions, 2562 events. 494/2562 cut-off events. For 4692/7701 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 35463 event pairs, 4 based on Foata normal form. 5/682 useless extension candidates. Maximal degree in co-relation 10205. Up to 1584 conditions per place. [2021-04-29 00:27:11,578 INFO L146 LiptonReduction]: Number of co-enabled transitions 1032 [2021-04-29 00:27:11,723 INFO L158 LiptonReduction]: Checked pairs total: 112 [2021-04-29 00:27:11,724 INFO L160 LiptonReduction]: Total number of compositions: 2 [2021-04-29 00:27:11,724 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 388 [2021-04-29 00:27:11,725 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 90 transitions, 608 flow [2021-04-29 00:27:11,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:11,726 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:27:11,726 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:27:11,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 00:27:11,727 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:27:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:27:11,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1429314843, now seen corresponding path program 1 times [2021-04-29 00:27:11,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:27:11,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672730517] [2021-04-29 00:27:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:27:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:27:11,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:27:11,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:27:11,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:27:11,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:27:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:27:11,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672730517] [2021-04-29 00:27:11,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:27:11,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:27:11,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990173092] [2021-04-29 00:27:11,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:27:11,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:27:11,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:27:11,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:27:11,783 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 164 [2021-04-29 00:27:11,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 90 transitions, 608 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:11,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:27:11,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 164 [2021-04-29 00:27:11,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:27:12,245 INFO L129 PetriNetUnfolder]: 735/3694 cut-off events. [2021-04-29 00:27:12,245 INFO L130 PetriNetUnfolder]: For 6586/7958 co-relation queries the response was YES. [2021-04-29 00:27:12,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14792 conditions, 3694 events. 735/3694 cut-off events. For 6586/7958 co-relation queries the response was YES. Maximal size of possible extension queue 1248. Compared 53891 event pairs, 1 based on Foata normal form. 34/1136 useless extension candidates. Maximal degree in co-relation 14766. Up to 2376 conditions per place. [2021-04-29 00:27:12,262 INFO L132 encePairwiseOnDemand]: 160/164 looper letters, 3 selfloop transitions, 3 changer transitions 53/95 dead transitions. [2021-04-29 00:27:12,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 95 transitions, 679 flow [2021-04-29 00:27:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:27:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:27:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 465 transitions. [2021-04-29 00:27:12,265 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7088414634146342 [2021-04-29 00:27:12,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 465 transitions. [2021-04-29 00:27:12,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 465 transitions. [2021-04-29 00:27:12,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:27:12,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 465 transitions. [2021-04-29 00:27:12,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:12,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:12,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:12,272 INFO L185 Difference]: Start difference. First operand has 70 places, 90 transitions, 608 flow. Second operand 4 states and 465 transitions. [2021-04-29 00:27:12,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 95 transitions, 679 flow [2021-04-29 00:27:13,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 639 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-04-29 00:27:13,183 INFO L241 Difference]: Finished difference. Result has 68 places, 42 transitions, 234 flow [2021-04-29 00:27:13,183 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=68, PETRI_TRANSITIONS=42} [2021-04-29 00:27:13,184 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -10 predicate places. [2021-04-29 00:27:13,184 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:27:13,184 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 42 transitions, 234 flow [2021-04-29 00:27:13,185 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 42 transitions, 234 flow [2021-04-29 00:27:13,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 234 flow [2021-04-29 00:27:13,207 INFO L129 PetriNetUnfolder]: 90/237 cut-off events. [2021-04-29 00:27:13,207 INFO L130 PetriNetUnfolder]: For 874/875 co-relation queries the response was YES. [2021-04-29 00:27:13,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 237 events. 90/237 cut-off events. For 874/875 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1359 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 809. Up to 109 conditions per place. [2021-04-29 00:27:13,211 INFO L146 LiptonReduction]: Number of co-enabled transitions 162 [2021-04-29 00:27:13,215 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:27:13,215 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:27:13,216 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-04-29 00:27:13,217 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 234 flow [2021-04-29 00:27:13,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:13,218 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:27:13,218 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:27:13,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 00:27:13,218 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:27:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:27:13,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1697512523, now seen corresponding path program 1 times [2021-04-29 00:27:13,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:27:13,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151488699] [2021-04-29 00:27:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:27:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:27:13,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:27:13,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:27:13,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:27:13,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:27:13,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:27:13,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:27:13,278 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-29 00:27:13,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 00:27:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:27:13,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151488699] [2021-04-29 00:27:13,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:27:13,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:27:13,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44617957] [2021-04-29 00:27:13,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:27:13,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:27:13,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:27:13,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:27:13,296 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 164 [2021-04-29 00:27:13,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:13,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:27:13,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 164 [2021-04-29 00:27:13,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:27:13,334 INFO L129 PetriNetUnfolder]: 90/210 cut-off events. [2021-04-29 00:27:13,335 INFO L130 PetriNetUnfolder]: For 1097/1100 co-relation queries the response was YES. [2021-04-29 00:27:13,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 210 events. 90/210 cut-off events. For 1097/1100 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 984 event pairs, 0 based on Foata normal form. 28/118 useless extension candidates. Maximal degree in co-relation 581. Up to 109 conditions per place. [2021-04-29 00:27:13,336 INFO L132 encePairwiseOnDemand]: 159/164 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2021-04-29 00:27:13,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 228 flow [2021-04-29 00:27:13,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 00:27:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 00:27:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 643 transitions. [2021-04-29 00:27:13,339 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6534552845528455 [2021-04-29 00:27:13,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 643 transitions. [2021-04-29 00:27:13,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 643 transitions. [2021-04-29 00:27:13,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:27:13,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 643 transitions. [2021-04-29 00:27:13,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:13,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:13,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:13,348 INFO L185 Difference]: Start difference. First operand has 52 places, 42 transitions, 234 flow. Second operand 6 states and 643 transitions. [2021-04-29 00:27:13,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 228 flow [2021-04-29 00:27:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 210 flow, removed 1 selfloop flow, removed 7 redundant places. [2021-04-29 00:27:13,350 INFO L241 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2021-04-29 00:27:13,350 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2021-04-29 00:27:13,351 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -29 predicate places. [2021-04-29 00:27:13,351 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:27:13,351 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 0 transitions, 0 flow [2021-04-29 00:27:13,351 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 0 transitions, 0 flow [2021-04-29 00:27:13,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 00:27:13,352 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 00:27:13,352 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:27:13,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 00:27:13,352 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 00:27:13,352 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:27:13,352 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:27:13,353 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 00:27:13,354 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 00:27:13,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:27:13,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-29 00:27:13,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 12:27:13 BasicIcfg [2021-04-29 00:27:13,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 00:27:13,362 INFO L168 Benchmark]: Toolchain (without parser) took 36086.01 ms. Allocated memory was 308.3 MB in the beginning and 4.8 GB in the end (delta: 4.5 GB). Free memory was 283.1 MB in the beginning and 3.0 GB in the end (delta: -2.7 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.0 GB. [2021-04-29 00:27:13,362 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 308.3 MB. Free memory is still 278.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:27:13,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.35 ms. Allocated memory is still 308.3 MB. Free memory was 280.0 MB in the beginning and 285.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. [2021-04-29 00:27:13,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.87 ms. Allocated memory is still 308.3 MB. Free memory was 285.8 MB in the beginning and 283.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:27:13,364 INFO L168 Benchmark]: Boogie Preprocessor took 30.53 ms. Allocated memory is still 308.3 MB. Free memory was 283.7 MB in the beginning and 282.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:27:13,364 INFO L168 Benchmark]: RCFGBuilder took 501.92 ms. Allocated memory is still 308.3 MB. Free memory was 282.6 MB in the beginning and 259.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:27:13,365 INFO L168 Benchmark]: TraceAbstraction took 34620.87 ms. Allocated memory was 308.3 MB in the beginning and 4.8 GB in the end (delta: 4.5 GB). Free memory was 258.5 MB in the beginning and 3.0 GB in the end (delta: -2.7 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.0 GB. [2021-04-29 00:27:13,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 308.3 MB. Free memory is still 278.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 811.35 ms. Allocated memory is still 308.3 MB. Free memory was 280.0 MB in the beginning and 285.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.87 ms. Allocated memory is still 308.3 MB. Free memory was 285.8 MB in the beginning and 283.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.53 ms. Allocated memory is still 308.3 MB. Free memory was 283.7 MB in the beginning and 282.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 501.92 ms. Allocated memory is still 308.3 MB. Free memory was 282.6 MB in the beginning and 259.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 34620.87 ms. Allocated memory was 308.3 MB in the beginning and 4.8 GB in the end (delta: 4.5 GB). Free memory was 258.5 MB in the beginning and 3.0 GB in the end (delta: -2.7 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8375.5ms, 69 PlacesBefore, 78 PlacesAfterwards, 60 TransitionsBefore, 68 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 87 TotalNumberOfCompositions, 5474 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1791, positive: 1629, positive conditional: 1629, positive unconditional: 0, negative: 162, negative conditional: 162, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 931, positive: 867, positive conditional: 0, positive unconditional: 867, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 931, positive: 867, positive conditional: 0, positive unconditional: 867, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 931, positive: 836, positive conditional: 0, positive unconditional: 836, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 95, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 475, positive: 153, positive conditional: 0, positive unconditional: 153, negative: 322, negative conditional: 0, negative unconditional: 322, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1791, positive: 762, positive conditional: 762, positive unconditional: 0, negative: 98, negative conditional: 98, negative unconditional: 0, unknown: 931, unknown conditional: 931, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 927, Positive cache size: 863, Positive conditional cache size: 863, Positive unconditional cache size: 0, Negative cache size: 64, Negative conditional cache size: 64, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.5ms, 78 PlacesBefore, 49 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 800 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 640 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 134, positive: 111, positive conditional: 111, positive unconditional: 0, negative: 23, negative conditional: 23, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 21, positive conditional: 1, positive unconditional: 20, negative: 4, negative conditional: 3, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 25, positive: 21, positive conditional: 1, positive unconditional: 20, negative: 4, negative conditional: 3, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 3, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 17, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 17, negative conditional: 12, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 134, positive: 90, positive conditional: 90, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 25, unknown conditional: 25, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 952, Positive cache size: 884, Positive conditional cache size: 884, Positive unconditional cache size: 0, Negative cache size: 68, Negative conditional cache size: 68, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.3ms, 51 PlacesBefore, 51 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 980 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 93 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 22, positive conditional: 22, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 1, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 1, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 25, positive: 19, positive conditional: 19, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 956, Positive cache size: 887, Positive conditional cache size: 887, Positive unconditional cache size: 0, Negative cache size: 69, Negative conditional cache size: 69, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.3ms, 55 PlacesBefore, 55 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 133 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, positive: 33, positive conditional: 33, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 37, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 958, Positive cache size: 889, Positive conditional cache size: 889, Positive unconditional cache size: 0, Negative cache size: 69, Negative conditional cache size: 69, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.2ms, 57 PlacesBefore, 57 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 133 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 30, positive conditional: 30, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 34, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 960, Positive cache size: 891, Positive conditional cache size: 891, Positive unconditional cache size: 0, Negative cache size: 69, Negative conditional cache size: 69, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1727.2ms, 62 PlacesBefore, 62 PlacesAfterwards, 72 TransitionsBefore, 72 TransitionsAfterwards, 1460 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 21, positive conditional: 21, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 2, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 2, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 24, positive: 15, positive conditional: 15, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 966, Positive cache size: 897, Positive conditional cache size: 897, Positive unconditional cache size: 0, Negative cache size: 69, Negative conditional cache size: 69, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1327.9ms, 71 PlacesBefore, 71 PlacesAfterwards, 107 TransitionsBefore, 107 TransitionsAfterwards, 2004 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 228 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 39, positive: 36, positive conditional: 36, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 6, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 6, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 39, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 974, Positive cache size: 905, Positive conditional cache size: 905, Positive unconditional cache size: 0, Negative cache size: 69, Negative conditional cache size: 69, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 675.4ms, 80 PlacesBefore, 77 PlacesAfterwards, 106 TransitionsBefore, 106 TransitionsAfterwards, 1948 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 219 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 45, positive: 42, positive conditional: 42, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 45, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 985, Positive cache size: 916, Positive conditional cache size: 916, Positive unconditional cache size: 0, Negative cache size: 69, Negative conditional cache size: 69, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 386.7ms, 74 PlacesBefore, 70 PlacesAfterwards, 90 TransitionsBefore, 90 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 112 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 112, positive: 112, positive conditional: 112, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 47, positive: 47, positive conditional: 37, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 47, positive: 47, positive conditional: 37, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 47, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 112, positive: 65, positive conditional: 65, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 47, unknown conditional: 47, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1032, Positive cache size: 963, Positive conditional cache size: 963, Positive unconditional cache size: 0, Negative cache size: 69, Negative conditional cache size: 69, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.9ms, 68 PlacesBefore, 52 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 162 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1032, Positive cache size: 963, Positive conditional cache size: 963, Positive unconditional cache size: 0, Negative cache size: 69, Negative conditional cache size: 69, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2ms, 49 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1032, Positive cache size: 963, Positive conditional cache size: 963, Positive unconditional cache size: 0, Negative cache size: 69, Negative conditional cache size: 69, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 34450.6ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 20285.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8561.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 70 SDtfs, 76 SDslu, 21 SDs, 0 SdLazy, 342 SolverSat, 133 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 432.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 172.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=933occurred in iteration=7, InterpolantAutomatonStates: 48, 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: 32.1ms SsaConstructionTime, 246.1ms SatisfiabilityAnalysisTime, 739.2ms InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 497 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...