/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/mix047_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 21:42:22,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 21:42:22,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 21:42:22,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-28 21:42:22,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 21:42:22,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 21:42:22,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 21:42:22,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 21:42:22,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 21:42:22,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 21:42:22,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 21:42:22,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 21:42:22,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 21:42:22,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 21:42:22,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 21:42:22,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 21:42:22,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 21:42:22,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 21:42:22,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 21:42:22,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 21:42:22,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 21:42:22,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 21:42:22,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 21:42:22,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 21:42:22,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 21:42:22,943 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 21:42:22,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 21:42:22,944 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 21:42:22,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 21:42:22,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 21:42:22,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 21:42:22,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 21:42:22,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 21:42:22,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 21:42:22,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 21:42:22,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 21:42:22,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 21:42:22,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 21:42:22,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 21:42:22,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 21:42:22,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 21:42:22,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 21:42:22,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 21:42:22,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 21:42:22,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 21:42:22,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 21:42:22,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 21:42:22,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 21:42:22,949 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 21:42:22,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 21:42:22,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 21:42:22,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 21:42:23,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 21:42:23,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 21:42:23,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 21:42:23,458 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 21:42:23,458 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 21:42:23,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_tso.opt.i [2021-04-28 21:42:23,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d5d0e1d/0c114cb4fde3484f98c6b641f40e4b94/FLAGaf02d9817 [2021-04-28 21:42:24,285 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 21:42:24,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_tso.opt.i [2021-04-28 21:42:24,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d5d0e1d/0c114cb4fde3484f98c6b641f40e4b94/FLAGaf02d9817 [2021-04-28 21:42:24,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d5d0e1d/0c114cb4fde3484f98c6b641f40e4b94 [2021-04-28 21:42:24,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 21:42:24,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 21:42:24,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 21:42:24,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 21:42:24,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 21:42:24,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:42:24" (1/1) ... [2021-04-28 21:42:24,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a83f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:24, skipping insertion in model container [2021-04-28 21:42:24,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:42:24" (1/1) ... [2021-04-28 21:42:24,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 21:42:24,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 21:42:24,842 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/mix047_tso.opt.i[948,961] [2021-04-28 21:42:25,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 21:42:25,081 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 21:42:25,096 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/mix047_tso.opt.i[948,961] [2021-04-28 21:42:25,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 21:42:25,396 INFO L208 MainTranslator]: Completed translation [2021-04-28 21:42:25,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25 WrapperNode [2021-04-28 21:42:25,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 21:42:25,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 21:42:25,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 21:42:25,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 21:42:25,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (1/1) ... [2021-04-28 21:42:25,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (1/1) ... [2021-04-28 21:42:25,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 21:42:25,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 21:42:25,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 21:42:25,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 21:42:25,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (1/1) ... [2021-04-28 21:42:25,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (1/1) ... [2021-04-28 21:42:25,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (1/1) ... [2021-04-28 21:42:25,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (1/1) ... [2021-04-28 21:42:25,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (1/1) ... [2021-04-28 21:42:25,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (1/1) ... [2021-04-28 21:42:25,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (1/1) ... [2021-04-28 21:42:25,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 21:42:25,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 21:42:25,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 21:42:25,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 21:42:25,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (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 [2021-04-28 21:42:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 21:42:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 21:42:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 21:42:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 21:42:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-28 21:42:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-28 21:42:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-28 21:42:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-28 21:42:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-28 21:42:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-28 21:42:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-04-28 21:42:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-04-28 21:42:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 21:42:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 21:42:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 21:42:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 21:42:25,661 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 21:42:28,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 21:42:28,329 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-04-28 21:42:28,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:42:28 BoogieIcfgContainer [2021-04-28 21:42:28,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 21:42:28,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 21:42:28,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 21:42:28,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 21:42:28,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 09:42:24" (1/3) ... [2021-04-28 21:42:28,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd5560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:42:28, skipping insertion in model container [2021-04-28 21:42:28,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:42:25" (2/3) ... [2021-04-28 21:42:28,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd5560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:42:28, skipping insertion in model container [2021-04-28 21:42:28,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:42:28" (3/3) ... [2021-04-28 21:42:28,341 INFO L111 eAbstractionObserver]: Analyzing ICFG mix047_tso.opt.i [2021-04-28 21:42:28,349 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 21:42:28,355 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-04-28 21:42:28,357 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 21:42:28,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,398 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,399 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,399 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,400 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,400 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,401 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,401 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,402 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,402 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,404 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,408 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,409 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,409 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,409 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,409 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,409 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,410 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,410 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,410 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,410 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,410 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,411 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,411 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,411 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,411 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,412 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,412 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,412 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,412 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,413 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,413 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,413 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,413 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,414 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,414 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,414 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,414 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,415 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,415 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,415 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,416 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,416 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,416 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,416 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,419 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,419 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,421 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,424 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,424 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,424 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,424 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,426 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,427 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,428 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,428 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,428 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,428 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,429 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,429 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,429 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,429 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,429 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,430 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,430 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 21:42:28,431 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 21:42:28,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-04-28 21:42:28,482 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 21:42:28,482 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 21:42:28,483 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 21:42:28,483 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 21:42:28,483 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 21:42:28,483 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 21:42:28,483 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 21:42:28,483 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 21:42:28,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 116 transitions, 252 flow [2021-04-28 21:42:28,557 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2021-04-28 21:42:28,558 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 21:42:28,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2021-04-28 21:42:28,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 116 transitions, 252 flow [2021-04-28 21:42:28,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 112 transitions, 236 flow [2021-04-28 21:42:28,593 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:42:28,614 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 112 transitions, 236 flow [2021-04-28 21:42:28,621 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 112 transitions, 236 flow [2021-04-28 21:42:28,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 236 flow [2021-04-28 21:42:28,678 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2021-04-28 21:42:28,678 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 21:42:28,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2021-04-28 21:42:28,685 INFO L146 LiptonReduction]: Number of co-enabled transitions 2598 [2021-04-28 21:42:32,857 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 230 DAG size of output: 190 [2021-04-28 21:42:33,872 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 188 DAG size of output: 187 [2021-04-28 21:42:36,380 WARN L205 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 314 DAG size of output: 270 [2021-04-28 21:42:37,438 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 267 [2021-04-28 21:42:38,230 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2021-04-28 21:42:38,352 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-04-28 21:42:38,950 WARN L205 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2021-04-28 21:42:39,198 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-28 21:42:39,910 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-04-28 21:42:40,451 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-04-28 21:42:42,169 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 234 DAG size of output: 193 [2021-04-28 21:42:42,694 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2021-04-28 21:42:45,148 WARN L205 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 318 DAG size of output: 274 [2021-04-28 21:42:46,281 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 271 [2021-04-28 21:42:48,152 WARN L205 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 232 DAG size of output: 191 [2021-04-28 21:42:48,717 WARN L205 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-04-28 21:42:51,438 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 316 DAG size of output: 272 [2021-04-28 21:42:52,641 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 269 [2021-04-28 21:42:53,999 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 230 DAG size of output: 189 [2021-04-28 21:42:54,641 WARN L205 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-04-28 21:42:57,542 WARN L205 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 314 DAG size of output: 270 [2021-04-28 21:42:58,901 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 267 [2021-04-28 21:43:02,483 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 233 DAG size of output: 192 [2021-04-28 21:43:03,166 WARN L205 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2021-04-28 21:43:06,260 WARN L205 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 317 DAG size of output: 273 [2021-04-28 21:43:07,738 WARN L205 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 270 [2021-04-28 21:43:09,276 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 232 DAG size of output: 192 [2021-04-28 21:43:10,017 WARN L205 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2021-04-28 21:43:13,172 WARN L205 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 316 DAG size of output: 272 [2021-04-28 21:43:14,619 WARN L205 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 269 [2021-04-28 21:43:16,297 WARN L205 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 233 DAG size of output: 193 [2021-04-28 21:43:17,102 WARN L205 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2021-04-28 21:43:20,506 WARN L205 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 317 DAG size of output: 273 [2021-04-28 21:43:22,076 WARN L205 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 270 [2021-04-28 21:43:24,640 WARN L205 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 230 DAG size of output: 189 [2021-04-28 21:43:25,425 WARN L205 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-04-28 21:43:28,855 WARN L205 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 314 DAG size of output: 270 [2021-04-28 21:43:30,510 WARN L205 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 267 [2021-04-28 21:43:35,292 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 232 DAG size of output: 191 [2021-04-28 21:43:36,107 WARN L205 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-04-28 21:43:39,868 WARN L205 SmtUtils]: Spent 3.76 s on a formula simplification. DAG size of input: 316 DAG size of output: 272 [2021-04-28 21:43:41,574 WARN L205 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 269 [2021-04-28 21:43:43,505 WARN L205 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 230 DAG size of output: 190 [2021-04-28 21:43:44,394 WARN L205 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2021-04-28 21:43:48,424 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 314 DAG size of output: 270 [2021-04-28 21:43:50,179 WARN L205 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 267 [2021-04-28 21:43:52,296 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 233 DAG size of output: 193 [2021-04-28 21:43:54,165 WARN L205 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 191 DAG size of output: 190 [2021-04-28 21:43:58,443 WARN L205 SmtUtils]: Spent 4.27 s on a formula simplification. DAG size of input: 317 DAG size of output: 273 [2021-04-28 21:44:00,412 WARN L205 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 270 [2021-04-28 21:44:03,303 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 21:44:03,438 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 21:44:03,574 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 21:44:03,709 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 21:44:04,203 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-28 21:44:04,313 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-28 21:44:04,438 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-28 21:44:04,555 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-28 21:44:04,672 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 21:44:04,788 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 21:44:04,912 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 21:44:05,033 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 21:44:05,151 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:05,267 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:05,385 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:05,498 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:05,602 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-04-28 21:44:05,708 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-04-28 21:44:05,810 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-04-28 21:44:05,912 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-04-28 21:44:06,018 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-04-28 21:44:06,217 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-04-28 21:44:06,322 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-04-28 21:44:06,460 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 21:44:06,599 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 21:44:06,734 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 21:44:06,864 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 21:44:06,972 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:07,081 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:07,194 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:07,305 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:08,574 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-04-28 21:44:08,683 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-04-28 21:44:08,791 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-04-28 21:44:08,899 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-04-28 21:44:09,010 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-04-28 21:44:09,477 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 21:44:09,605 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 21:44:09,735 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 21:44:09,876 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 21:44:09,983 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-28 21:44:10,092 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-28 21:44:10,198 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-28 21:44:10,304 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-28 21:44:11,101 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:11,236 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:11,371 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:11,505 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:11,941 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 21:44:12,058 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 21:44:12,175 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 21:44:12,292 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 21:44:13,702 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 21:44:13,824 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 21:44:13,955 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 21:44:14,075 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 21:44:14,185 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:14,295 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:14,406 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:14,517 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 21:44:15,077 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-28 21:44:15,254 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-28 21:44:15,423 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-28 21:44:15,594 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-28 21:44:15,741 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:15,885 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:16,026 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:16,165 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:16,321 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-04-28 21:44:16,484 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-04-28 21:44:16,657 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-04-28 21:44:16,817 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-04-28 21:44:16,982 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 21:44:17,151 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 21:44:17,324 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 21:44:17,494 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 21:44:17,642 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:17,793 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:17,946 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:18,114 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:18,319 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 21:44:18,522 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 21:44:18,718 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 21:44:18,905 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 21:44:19,115 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 21:44:19,340 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 21:44:19,543 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 21:44:19,757 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 21:44:19,967 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 21:44:20,150 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 21:44:20,341 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 21:44:20,529 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 21:44:20,708 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 21:44:20,883 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 21:44:21,048 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 21:44:21,207 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 21:44:21,462 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-28 21:44:21,679 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-28 21:44:21,898 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-28 21:44:22,114 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-28 21:44:22,320 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-28 21:44:22,530 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-28 21:44:22,736 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-28 21:44:22,939 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-28 21:44:23,082 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:23,224 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:23,369 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:23,512 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:23,655 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:23,798 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:23,949 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:24,092 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:24,235 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:24,375 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:24,518 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:24,660 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:24,802 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:24,945 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:25,086 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:25,229 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 21:44:25,471 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 21:44:25,696 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 21:44:25,928 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 21:44:26,158 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 21:44:26,467 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-28 21:44:26,764 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-28 21:44:27,104 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-28 21:44:27,432 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-28 21:44:27,674 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:27,923 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:28,148 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:28,376 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:28,596 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-28 21:44:28,825 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-28 21:44:29,050 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-28 21:44:29,283 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-28 21:44:29,490 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 21:44:29,696 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 21:44:29,902 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 21:44:30,103 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 21:44:30,365 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 21:44:30,608 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 21:44:30,853 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 21:44:31,100 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 21:44:31,339 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:31,581 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:31,829 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:32,063 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:32,328 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 21:44:32,594 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 21:44:32,873 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 21:44:33,158 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 21:44:33,503 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 21:44:33,859 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 21:44:34,190 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 21:44:34,517 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 21:44:34,763 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-28 21:44:35,015 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-28 21:44:35,261 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-28 21:44:35,503 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-28 21:44:35,786 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-28 21:44:36,083 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-28 21:44:36,391 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-28 21:44:36,697 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-28 21:44:36,964 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 21:44:37,228 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 21:44:37,502 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 21:44:37,779 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 21:44:38,084 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-28 21:44:38,381 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-28 21:44:38,681 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-28 21:44:38,984 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-28 21:44:39,324 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-28 21:44:39,652 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-28 21:44:39,963 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-28 21:44:40,270 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-28 21:44:40,503 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:40,736 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:40,979 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:41,234 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 21:44:41,553 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-28 21:44:41,854 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-28 21:44:42,171 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-28 21:44:42,479 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-28 21:44:42,856 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:43,205 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:43,538 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:43,878 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:44,206 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:44,527 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:44,867 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:45,204 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:45,568 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:45,923 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:46,243 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:46,568 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:47,570 WARN L205 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2021-04-28 21:44:48,013 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-04-28 21:44:48,982 WARN L205 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2021-04-28 21:44:49,434 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-04-28 21:44:49,804 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:50,156 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:50,509 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:50,854 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 21:44:51,797 WARN L205 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2021-04-28 21:44:52,242 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-04-28 21:44:53,154 WARN L205 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2021-04-28 21:44:53,593 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-04-28 21:44:53,796 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 21:44:53,998 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 21:44:54,222 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 21:44:54,452 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 21:44:54,522 INFO L158 LiptonReduction]: Checked pairs total: 24978 [2021-04-28 21:44:54,522 INFO L160 LiptonReduction]: Total number of compositions: 259 [2021-04-28 21:44:54,528 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 145937 [2021-04-28 21:44:54,554 INFO L129 PetriNetUnfolder]: 0/89 cut-off events. [2021-04-28 21:44:54,554 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 21:44:54,554 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:44:54,555 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:44:54,556 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:44:54,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:44:54,562 INFO L82 PathProgramCache]: Analyzing trace with hash -2014205008, now seen corresponding path program 1 times [2021-04-28 21:44:54,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:44:54,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985130713] [2021-04-28 21:44:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:44:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:44:54,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:54,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:44:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:44:54,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985130713] [2021-04-28 21:44:54,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:44:54,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 21:44:54,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860193825] [2021-04-28 21:44:54,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 21:44:54,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:44:54,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 21:44:54,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 21:44:54,917 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 375 [2021-04-28 21:44:54,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 142 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 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) [2021-04-28 21:44:54,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:44:54,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 375 [2021-04-28 21:44:54,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:44:55,528 INFO L129 PetriNetUnfolder]: 212/678 cut-off events. [2021-04-28 21:44:55,528 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 21:44:55,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 678 events. 212/678 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5282 event pairs, 16 based on Foata normal form. 10/308 useless extension candidates. Maximal degree in co-relation 1008. Up to 333 conditions per place. [2021-04-28 21:44:55,536 INFO L132 encePairwiseOnDemand]: 358/375 looper letters, 7 selfloop transitions, 4 changer transitions 102/154 dead transitions. [2021-04-28 21:44:55,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 154 transitions, 416 flow [2021-04-28 21:44:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 21:44:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 21:44:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2021-04-28 21:44:55,559 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8311111111111111 [2021-04-28 21:44:55,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2021-04-28 21:44:55,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2021-04-28 21:44:55,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:44:55,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2021-04-28 21:44:55,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 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) [2021-04-28 21:44:55,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 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) [2021-04-28 21:44:55,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 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) [2021-04-28 21:44:55,588 INFO L185 Difference]: Start difference. First operand has 153 places, 142 transitions, 296 flow. Second operand 3 states and 935 transitions. [2021-04-28 21:44:55,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 154 transitions, 416 flow [2021-04-28 21:44:55,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 154 transitions, 412 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-04-28 21:44:55,597 INFO L241 Difference]: Finished difference. Result has 148 places, 49 transitions, 114 flow [2021-04-28 21:44:55,599 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=148, PETRI_TRANSITIONS=49} [2021-04-28 21:44:55,600 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -5 predicate places. [2021-04-28 21:44:55,601 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:44:55,601 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 49 transitions, 114 flow [2021-04-28 21:44:55,601 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 49 transitions, 114 flow [2021-04-28 21:44:55,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 49 transitions, 114 flow [2021-04-28 21:44:55,609 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2021-04-28 21:44:55,610 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 21:44:55,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 161 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-28 21:44:55,611 INFO L146 LiptonReduction]: Number of co-enabled transitions 1464 [2021-04-28 21:44:56,050 INFO L158 LiptonReduction]: Checked pairs total: 1426 [2021-04-28 21:44:56,050 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:44:56,050 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 449 [2021-04-28 21:44:56,052 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 114 flow [2021-04-28 21:44:56,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 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) [2021-04-28 21:44:56,053 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:44:56,053 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:44:56,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 21:44:56,054 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:44:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:44:56,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1379295936, now seen corresponding path program 1 times [2021-04-28 21:44:56,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:44:56,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631583961] [2021-04-28 21:44:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:44:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:44:56,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:56,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:44:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:44:56,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631583961] [2021-04-28 21:44:56,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:44:56,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 21:44:56,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096828925] [2021-04-28 21:44:56,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 21:44:56,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:44:56,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 21:44:56,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 21:44:56,248 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 375 [2021-04-28 21:44:56,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 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) [2021-04-28 21:44:56,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:44:56,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 375 [2021-04-28 21:44:56,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:44:56,283 INFO L129 PetriNetUnfolder]: 3/65 cut-off events. [2021-04-28 21:44:56,284 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 21:44:56,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 65 events. 3/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 230 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 81. Up to 10 conditions per place. [2021-04-28 21:44:56,286 INFO L132 encePairwiseOnDemand]: 371/375 looper letters, 3 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2021-04-28 21:44:56,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 130 flow [2021-04-28 21:44:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 21:44:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 21:44:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 835 transitions. [2021-04-28 21:44:56,296 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7422222222222222 [2021-04-28 21:44:56,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 835 transitions. [2021-04-28 21:44:56,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 835 transitions. [2021-04-28 21:44:56,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:44:56,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 835 transitions. [2021-04-28 21:44:56,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 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) [2021-04-28 21:44:56,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 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) [2021-04-28 21:44:56,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 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) [2021-04-28 21:44:56,310 INFO L185 Difference]: Start difference. First operand has 60 places, 49 transitions, 114 flow. Second operand 3 states and 835 transitions. [2021-04-28 21:44:56,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 130 flow [2021-04-28 21:44:56,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 21:44:56,313 INFO L241 Difference]: Finished difference. Result has 61 places, 51 transitions, 125 flow [2021-04-28 21:44:56,314 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2021-04-28 21:44:56,314 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -92 predicate places. [2021-04-28 21:44:56,315 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:44:56,315 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 51 transitions, 125 flow [2021-04-28 21:44:56,316 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 51 transitions, 125 flow [2021-04-28 21:44:56,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 51 transitions, 125 flow [2021-04-28 21:44:56,325 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2021-04-28 21:44:56,325 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 21:44:56,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 236 event pairs, 1 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 76. Up to 10 conditions per place. [2021-04-28 21:44:56,332 INFO L146 LiptonReduction]: Number of co-enabled transitions 1574 [2021-04-28 21:44:56,534 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-04-28 21:44:56,653 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-04-28 21:44:56,779 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:56,884 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 21:44:56,975 INFO L158 LiptonReduction]: Checked pairs total: 2266 [2021-04-28 21:44:56,975 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-28 21:44:56,975 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 660 [2021-04-28 21:44:56,977 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 125 flow [2021-04-28 21:44:56,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 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) [2021-04-28 21:44:56,978 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:44:56,979 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:44:56,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 21:44:56,979 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:44:56,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:44:56,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1976607963, now seen corresponding path program 1 times [2021-04-28 21:44:56,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:44:56,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390415716] [2021-04-28 21:44:56,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:44:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:44:57,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:57,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:44:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:44:57,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390415716] [2021-04-28 21:44:57,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:44:57,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 21:44:57,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418315059] [2021-04-28 21:44:57,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 21:44:57,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:44:57,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 21:44:57,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 21:44:57,115 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 376 [2021-04-28 21:44:57,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 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) [2021-04-28 21:44:57,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:44:57,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 376 [2021-04-28 21:44:57,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:44:57,147 INFO L129 PetriNetUnfolder]: 10/92 cut-off events. [2021-04-28 21:44:57,148 INFO L130 PetriNetUnfolder]: For 8/17 co-relation queries the response was YES. [2021-04-28 21:44:57,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 92 events. 10/92 cut-off events. For 8/17 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 396 event pairs, 3 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 131. Up to 19 conditions per place. [2021-04-28 21:44:57,149 INFO L132 encePairwiseOnDemand]: 372/376 looper letters, 3 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2021-04-28 21:44:57,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 141 flow [2021-04-28 21:44:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 21:44:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 21:44:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2021-04-28 21:44:57,155 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7322695035460993 [2021-04-28 21:44:57,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2021-04-28 21:44:57,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2021-04-28 21:44:57,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:44:57,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2021-04-28 21:44:57,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 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) [2021-04-28 21:44:57,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:44:57,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:44:57,165 INFO L185 Difference]: Start difference. First operand has 61 places, 51 transitions, 125 flow. Second operand 3 states and 826 transitions. [2021-04-28 21:44:57,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 141 flow [2021-04-28 21:44:57,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 21:44:57,167 INFO L241 Difference]: Finished difference. Result has 63 places, 53 transitions, 141 flow [2021-04-28 21:44:57,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2021-04-28 21:44:57,168 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -90 predicate places. [2021-04-28 21:44:57,168 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:44:57,168 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 53 transitions, 141 flow [2021-04-28 21:44:57,169 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 53 transitions, 141 flow [2021-04-28 21:44:57,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 53 transitions, 141 flow [2021-04-28 21:44:57,183 INFO L129 PetriNetUnfolder]: 10/92 cut-off events. [2021-04-28 21:44:57,184 INFO L130 PetriNetUnfolder]: For 7/13 co-relation queries the response was YES. [2021-04-28 21:44:57,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 92 events. 10/92 cut-off events. For 7/13 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 391 event pairs, 3 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 130. Up to 19 conditions per place. [2021-04-28 21:44:57,187 INFO L146 LiptonReduction]: Number of co-enabled transitions 1696 [2021-04-28 21:44:57,235 INFO L158 LiptonReduction]: Checked pairs total: 839 [2021-04-28 21:44:57,235 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:44:57,235 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 67 [2021-04-28 21:44:57,237 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 141 flow [2021-04-28 21:44:57,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 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) [2021-04-28 21:44:57,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:44:57,238 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:44:57,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 21:44:57,239 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:44:57,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:44:57,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1641569529, now seen corresponding path program 1 times [2021-04-28 21:44:57,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:44:57,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552615946] [2021-04-28 21:44:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:44:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:44:57,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:57,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 21:44:57,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:57,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:44:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:44:57,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552615946] [2021-04-28 21:44:57,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:44:57,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 21:44:57,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152059564] [2021-04-28 21:44:57,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 21:44:57,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:44:57,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 21:44:57,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 21:44:57,325 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 376 [2021-04-28 21:44:57,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2021-04-28 21:44:57,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:44:57,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 376 [2021-04-28 21:44:57,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:44:57,365 INFO L129 PetriNetUnfolder]: 4/90 cut-off events. [2021-04-28 21:44:57,365 INFO L130 PetriNetUnfolder]: For 25/58 co-relation queries the response was YES. [2021-04-28 21:44:57,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 90 events. 4/90 cut-off events. For 25/58 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 442 event pairs, 1 based on Foata normal form. 2/52 useless extension candidates. Maximal degree in co-relation 136. Up to 15 conditions per place. [2021-04-28 21:44:57,367 INFO L132 encePairwiseOnDemand]: 373/376 looper letters, 3 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2021-04-28 21:44:57,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 153 flow [2021-04-28 21:44:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 21:44:57,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 21:44:57,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 837 transitions. [2021-04-28 21:44:57,374 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7420212765957447 [2021-04-28 21:44:57,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 837 transitions. [2021-04-28 21:44:57,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 837 transitions. [2021-04-28 21:44:57,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:44:57,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 837 transitions. [2021-04-28 21:44:57,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 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) [2021-04-28 21:44:57,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:44:57,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:44:57,383 INFO L185 Difference]: Start difference. First operand has 63 places, 53 transitions, 141 flow. Second operand 3 states and 837 transitions. [2021-04-28 21:44:57,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 153 flow [2021-04-28 21:44:57,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 21:44:57,386 INFO L241 Difference]: Finished difference. Result has 65 places, 53 transitions, 149 flow [2021-04-28 21:44:57,387 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2021-04-28 21:44:57,387 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -88 predicate places. [2021-04-28 21:44:57,387 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:44:57,387 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 53 transitions, 149 flow [2021-04-28 21:44:57,388 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 53 transitions, 149 flow [2021-04-28 21:44:57,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 149 flow [2021-04-28 21:44:57,401 INFO L129 PetriNetUnfolder]: 4/81 cut-off events. [2021-04-28 21:44:57,402 INFO L130 PetriNetUnfolder]: For 20/27 co-relation queries the response was YES. [2021-04-28 21:44:57,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 81 events. 4/81 cut-off events. For 20/27 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 368 event pairs, 2 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 117. Up to 13 conditions per place. [2021-04-28 21:44:57,405 INFO L146 LiptonReduction]: Number of co-enabled transitions 1694 [2021-04-28 21:44:57,715 INFO L158 LiptonReduction]: Checked pairs total: 839 [2021-04-28 21:44:57,715 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:44:57,716 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 329 [2021-04-28 21:44:57,718 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 149 flow [2021-04-28 21:44:57,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2021-04-28 21:44:57,719 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:44:57,719 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:44:57,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 21:44:57,719 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:44:57,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:44:57,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2051653192, now seen corresponding path program 1 times [2021-04-28 21:44:57,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:44:57,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715032974] [2021-04-28 21:44:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:44:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:44:57,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:57,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:44:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:44:57,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715032974] [2021-04-28 21:44:57,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:44:57,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 21:44:57,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392745603] [2021-04-28 21:44:57,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 21:44:57,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:44:57,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 21:44:57,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 21:44:57,793 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 376 [2021-04-28 21:44:57,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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) [2021-04-28 21:44:57,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:44:57,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 376 [2021-04-28 21:44:57,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:44:57,825 INFO L129 PetriNetUnfolder]: 4/90 cut-off events. [2021-04-28 21:44:57,825 INFO L130 PetriNetUnfolder]: For 84/104 co-relation queries the response was YES. [2021-04-28 21:44:57,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 90 events. 4/90 cut-off events. For 84/104 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 441 event pairs, 1 based on Foata normal form. 2/53 useless extension candidates. Maximal degree in co-relation 141. Up to 15 conditions per place. [2021-04-28 21:44:57,827 INFO L132 encePairwiseOnDemand]: 373/376 looper letters, 1 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2021-04-28 21:44:57,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 53 transitions, 155 flow [2021-04-28 21:44:57,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 21:44:57,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 21:44:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2021-04-28 21:44:57,833 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6976950354609929 [2021-04-28 21:44:57,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2021-04-28 21:44:57,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2021-04-28 21:44:57,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:44:57,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2021-04-28 21:44:57,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2021-04-28 21:44:57,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:44:57,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:44:57,842 INFO L185 Difference]: Start difference. First operand has 65 places, 53 transitions, 149 flow. Second operand 3 states and 787 transitions. [2021-04-28 21:44:57,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 53 transitions, 155 flow [2021-04-28 21:44:57,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 53 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-04-28 21:44:57,845 INFO L241 Difference]: Finished difference. Result has 67 places, 53 transitions, 152 flow [2021-04-28 21:44:57,845 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2021-04-28 21:44:57,845 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -86 predicate places. [2021-04-28 21:44:57,845 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:44:57,846 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 53 transitions, 152 flow [2021-04-28 21:44:57,846 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 53 transitions, 152 flow [2021-04-28 21:44:57,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 53 transitions, 152 flow [2021-04-28 21:44:57,859 INFO L129 PetriNetUnfolder]: 4/81 cut-off events. [2021-04-28 21:44:57,860 INFO L130 PetriNetUnfolder]: For 29/34 co-relation queries the response was YES. [2021-04-28 21:44:57,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 81 events. 4/81 cut-off events. For 29/34 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 370 event pairs, 2 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 122. Up to 13 conditions per place. [2021-04-28 21:44:57,863 INFO L146 LiptonReduction]: Number of co-enabled transitions 1684 [2021-04-28 21:44:57,867 INFO L158 LiptonReduction]: Checked pairs total: 769 [2021-04-28 21:44:57,867 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:44:57,867 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-04-28 21:44:57,869 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 152 flow [2021-04-28 21:44:57,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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) [2021-04-28 21:44:57,870 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:44:57,870 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:44:57,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 21:44:57,871 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:44:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:44:57,871 INFO L82 PathProgramCache]: Analyzing trace with hash 2043110196, now seen corresponding path program 1 times [2021-04-28 21:44:57,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:44:57,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713959295] [2021-04-28 21:44:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:44:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:44:58,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:58,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-28 21:44:58,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:58,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-28 21:44:58,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:58,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-28 21:44:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:44:58,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713959295] [2021-04-28 21:44:58,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:44:58,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 21:44:58,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847077805] [2021-04-28 21:44:58,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 21:44:58,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:44:58,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 21:44:58,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 21:44:58,123 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 376 [2021-04-28 21:44:58,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 233.8) internal successors, (1169), 5 states have internal predecessors, (1169), 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) [2021-04-28 21:44:58,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:44:58,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 376 [2021-04-28 21:44:58,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:44:58,426 INFO L129 PetriNetUnfolder]: 175/486 cut-off events. [2021-04-28 21:44:58,426 INFO L130 PetriNetUnfolder]: For 349/413 co-relation queries the response was YES. [2021-04-28 21:44:58,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 486 events. 175/486 cut-off events. For 349/413 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3207 event pairs, 89 based on Foata normal form. 7/335 useless extension candidates. Maximal degree in co-relation 992. Up to 254 conditions per place. [2021-04-28 21:44:58,435 INFO L132 encePairwiseOnDemand]: 367/376 looper letters, 11 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2021-04-28 21:44:58,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 65 transitions, 223 flow [2021-04-28 21:44:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 21:44:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 21:44:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1187 transitions. [2021-04-28 21:44:58,443 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6313829787234042 [2021-04-28 21:44:58,443 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1187 transitions. [2021-04-28 21:44:58,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1187 transitions. [2021-04-28 21:44:58,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:44:58,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1187 transitions. [2021-04-28 21:44:58,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.4) internal successors, (1187), 5 states have internal predecessors, (1187), 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) [2021-04-28 21:44:58,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:44:58,455 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:44:58,455 INFO L185 Difference]: Start difference. First operand has 67 places, 53 transitions, 152 flow. Second operand 5 states and 1187 transitions. [2021-04-28 21:44:58,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 65 transitions, 223 flow [2021-04-28 21:44:58,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 21:44:58,459 INFO L241 Difference]: Finished difference. Result has 72 places, 63 transitions, 227 flow [2021-04-28 21:44:58,459 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2021-04-28 21:44:58,459 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -81 predicate places. [2021-04-28 21:44:58,459 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:44:58,460 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 63 transitions, 227 flow [2021-04-28 21:44:58,460 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 63 transitions, 227 flow [2021-04-28 21:44:58,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 63 transitions, 227 flow [2021-04-28 21:44:58,520 INFO L129 PetriNetUnfolder]: 56/315 cut-off events. [2021-04-28 21:44:58,520 INFO L130 PetriNetUnfolder]: For 613/631 co-relation queries the response was YES. [2021-04-28 21:44:58,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 315 events. 56/315 cut-off events. For 613/631 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2282 event pairs, 17 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 744. Up to 76 conditions per place. [2021-04-28 21:44:58,535 INFO L146 LiptonReduction]: Number of co-enabled transitions 2196 [2021-04-28 21:44:58,543 INFO L158 LiptonReduction]: Checked pairs total: 301 [2021-04-28 21:44:58,544 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:44:58,544 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 85 [2021-04-28 21:44:58,546 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 227 flow [2021-04-28 21:44:58,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 233.8) internal successors, (1169), 5 states have internal predecessors, (1169), 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) [2021-04-28 21:44:58,547 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:44:58,548 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:44:58,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-28 21:44:58,548 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:44:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:44:58,548 INFO L82 PathProgramCache]: Analyzing trace with hash -823255866, now seen corresponding path program 2 times [2021-04-28 21:44:58,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:44:58,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852068219] [2021-04-28 21:44:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:44:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:44:58,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:58,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-28 21:44:58,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:58,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-28 21:44:58,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:58,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-28 21:44:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:44:58,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852068219] [2021-04-28 21:44:58,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:44:58,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 21:44:58,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154321969] [2021-04-28 21:44:58,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 21:44:58,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:44:58,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 21:44:58,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 21:44:58,723 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 376 [2021-04-28 21:44:58,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 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) [2021-04-28 21:44:58,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:44:58,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 376 [2021-04-28 21:44:58,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:44:59,025 INFO L129 PetriNetUnfolder]: 164/459 cut-off events. [2021-04-28 21:44:59,026 INFO L130 PetriNetUnfolder]: For 758/839 co-relation queries the response was YES. [2021-04-28 21:44:59,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 459 events. 164/459 cut-off events. For 758/839 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2989 event pairs, 84 based on Foata normal form. 10/307 useless extension candidates. Maximal degree in co-relation 1284. Up to 272 conditions per place. [2021-04-28 21:44:59,036 INFO L132 encePairwiseOnDemand]: 369/376 looper letters, 13 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2021-04-28 21:44:59,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 316 flow [2021-04-28 21:44:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 21:44:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 21:44:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 942 transitions. [2021-04-28 21:44:59,043 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6263297872340425 [2021-04-28 21:44:59,043 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 942 transitions. [2021-04-28 21:44:59,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 942 transitions. [2021-04-28 21:44:59,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:44:59,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 942 transitions. [2021-04-28 21:44:59,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.5) internal successors, (942), 4 states have internal predecessors, (942), 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) [2021-04-28 21:44:59,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:44:59,052 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:44:59,052 INFO L185 Difference]: Start difference. First operand has 72 places, 63 transitions, 227 flow. Second operand 4 states and 942 transitions. [2021-04-28 21:44:59,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 316 flow [2021-04-28 21:44:59,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-28 21:44:59,057 INFO L241 Difference]: Finished difference. Result has 77 places, 70 transitions, 323 flow [2021-04-28 21:44:59,057 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2021-04-28 21:44:59,057 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -76 predicate places. [2021-04-28 21:44:59,057 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:44:59,058 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 70 transitions, 323 flow [2021-04-28 21:44:59,058 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 70 transitions, 323 flow [2021-04-28 21:44:59,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 70 transitions, 323 flow [2021-04-28 21:44:59,129 INFO L129 PetriNetUnfolder]: 60/342 cut-off events. [2021-04-28 21:44:59,129 INFO L130 PetriNetUnfolder]: For 803/826 co-relation queries the response was YES. [2021-04-28 21:44:59,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 342 events. 60/342 cut-off events. For 803/826 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2547 event pairs, 17 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 881. Up to 71 conditions per place. [2021-04-28 21:44:59,145 INFO L146 LiptonReduction]: Number of co-enabled transitions 2382 [2021-04-28 21:44:59,153 INFO L158 LiptonReduction]: Checked pairs total: 352 [2021-04-28 21:44:59,153 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:44:59,154 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-04-28 21:44:59,156 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 323 flow [2021-04-28 21:44:59,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 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) [2021-04-28 21:44:59,157 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:44:59,157 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:44:59,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-28 21:44:59,157 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:44:59,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:44:59,157 INFO L82 PathProgramCache]: Analyzing trace with hash 853406768, now seen corresponding path program 1 times [2021-04-28 21:44:59,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:44:59,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459016617] [2021-04-28 21:44:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:44:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:44:59,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:59,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-28 21:44:59,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:59,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 21:44:59,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:59,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-28 21:44:59,328 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-04-28 21:44:59,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-28 21:44:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:44:59,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459016617] [2021-04-28 21:44:59,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:44:59,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-28 21:44:59,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479662483] [2021-04-28 21:44:59,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-28 21:44:59,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:44:59,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-28 21:44:59,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-28 21:44:59,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 376 [2021-04-28 21:44:59,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 323 flow. Second operand has 6 states, 6 states have (on average 236.83333333333334) internal successors, (1421), 6 states have internal predecessors, (1421), 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) [2021-04-28 21:44:59,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:44:59,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 376 [2021-04-28 21:44:59,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:44:59,715 INFO L129 PetriNetUnfolder]: 161/564 cut-off events. [2021-04-28 21:44:59,715 INFO L130 PetriNetUnfolder]: For 1116/1223 co-relation queries the response was YES. [2021-04-28 21:44:59,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 564 events. 161/564 cut-off events. For 1116/1223 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4393 event pairs, 21 based on Foata normal form. 19/373 useless extension candidates. Maximal degree in co-relation 1673. Up to 227 conditions per place. [2021-04-28 21:44:59,727 INFO L132 encePairwiseOnDemand]: 368/376 looper letters, 15 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2021-04-28 21:44:59,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 75 transitions, 409 flow [2021-04-28 21:44:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 21:44:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 21:44:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1200 transitions. [2021-04-28 21:44:59,735 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2021-04-28 21:44:59,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1200 transitions. [2021-04-28 21:44:59,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1200 transitions. [2021-04-28 21:44:59,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:44:59,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1200 transitions. [2021-04-28 21:44:59,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 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) [2021-04-28 21:44:59,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:44:59,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:44:59,746 INFO L185 Difference]: Start difference. First operand has 77 places, 70 transitions, 323 flow. Second operand 5 states and 1200 transitions. [2021-04-28 21:44:59,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 75 transitions, 409 flow [2021-04-28 21:44:59,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 401 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-04-28 21:44:59,752 INFO L241 Difference]: Finished difference. Result has 81 places, 72 transitions, 371 flow [2021-04-28 21:44:59,752 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=371, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2021-04-28 21:44:59,752 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -72 predicate places. [2021-04-28 21:44:59,753 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:44:59,753 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 72 transitions, 371 flow [2021-04-28 21:44:59,753 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 72 transitions, 371 flow [2021-04-28 21:44:59,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 72 transitions, 371 flow [2021-04-28 21:44:59,821 INFO L129 PetriNetUnfolder]: 86/392 cut-off events. [2021-04-28 21:44:59,821 INFO L130 PetriNetUnfolder]: For 645/665 co-relation queries the response was YES. [2021-04-28 21:44:59,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 392 events. 86/392 cut-off events. For 645/665 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2890 event pairs, 24 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 1073. Up to 92 conditions per place. [2021-04-28 21:44:59,838 INFO L146 LiptonReduction]: Number of co-enabled transitions 2480 [2021-04-28 21:44:59,845 INFO L158 LiptonReduction]: Checked pairs total: 402 [2021-04-28 21:44:59,845 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:44:59,845 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 92 [2021-04-28 21:44:59,847 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 371 flow [2021-04-28 21:44:59,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 236.83333333333334) internal successors, (1421), 6 states have internal predecessors, (1421), 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) [2021-04-28 21:44:59,848 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:44:59,848 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:44:59,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-28 21:44:59,849 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:44:59,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:44:59,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1093645328, now seen corresponding path program 2 times [2021-04-28 21:44:59,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:44:59,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395577158] [2021-04-28 21:44:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:44:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:44:59,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:59,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 21:44:59,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:44:59,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 21:44:59,993 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-04-28 21:44:59,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-28 21:45:00,040 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-04-28 21:45:00,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-28 21:45:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:45:00,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395577158] [2021-04-28 21:45:00,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:45:00,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 21:45:00,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560216427] [2021-04-28 21:45:00,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 21:45:00,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:45:00,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 21:45:00,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 21:45:00,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 376 [2021-04-28 21:45:00,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 371 flow. Second operand has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 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) [2021-04-28 21:45:00,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:45:00,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 376 [2021-04-28 21:45:00,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:45:00,464 INFO L129 PetriNetUnfolder]: 153/499 cut-off events. [2021-04-28 21:45:00,465 INFO L130 PetriNetUnfolder]: For 1195/1332 co-relation queries the response was YES. [2021-04-28 21:45:00,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 499 events. 153/499 cut-off events. For 1195/1332 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3643 event pairs, 8 based on Foata normal form. 20/348 useless extension candidates. Maximal degree in co-relation 1726. Up to 165 conditions per place. [2021-04-28 21:45:00,475 INFO L132 encePairwiseOnDemand]: 368/376 looper letters, 10 selfloop transitions, 24 changer transitions 0/77 dead transitions. [2021-04-28 21:45:00,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 467 flow [2021-04-28 21:45:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-28 21:45:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-28 21:45:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1436 transitions. [2021-04-28 21:45:00,484 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6365248226950354 [2021-04-28 21:45:00,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1436 transitions. [2021-04-28 21:45:00,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1436 transitions. [2021-04-28 21:45:00,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:45:00,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1436 transitions. [2021-04-28 21:45:00,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 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) [2021-04-28 21:45:00,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 376.0) internal successors, (2632), 7 states have internal predecessors, (2632), 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) [2021-04-28 21:45:00,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 376.0) internal successors, (2632), 7 states have internal predecessors, (2632), 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) [2021-04-28 21:45:00,497 INFO L185 Difference]: Start difference. First operand has 81 places, 72 transitions, 371 flow. Second operand 6 states and 1436 transitions. [2021-04-28 21:45:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 467 flow [2021-04-28 21:45:00,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 77 transitions, 420 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-04-28 21:45:00,504 INFO L241 Difference]: Finished difference. Result has 84 places, 74 transitions, 405 flow [2021-04-28 21:45:00,505 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=405, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2021-04-28 21:45:00,505 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -69 predicate places. [2021-04-28 21:45:00,505 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:45:00,505 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 74 transitions, 405 flow [2021-04-28 21:45:00,506 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 74 transitions, 405 flow [2021-04-28 21:45:00,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 74 transitions, 405 flow [2021-04-28 21:45:00,574 INFO L129 PetriNetUnfolder]: 75/369 cut-off events. [2021-04-28 21:45:00,575 INFO L130 PetriNetUnfolder]: For 675/700 co-relation queries the response was YES. [2021-04-28 21:45:00,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 369 events. 75/369 cut-off events. For 675/700 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2739 event pairs, 27 based on Foata normal form. 3/212 useless extension candidates. Maximal degree in co-relation 1101. Up to 91 conditions per place. [2021-04-28 21:45:00,592 INFO L146 LiptonReduction]: Number of co-enabled transitions 2562 [2021-04-28 21:45:00,600 INFO L158 LiptonReduction]: Checked pairs total: 446 [2021-04-28 21:45:00,600 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:45:00,600 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 95 [2021-04-28 21:45:00,602 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 405 flow [2021-04-28 21:45:00,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 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) [2021-04-28 21:45:00,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:45:00,603 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:45:00,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-28 21:45:00,604 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:45:00,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:45:00,604 INFO L82 PathProgramCache]: Analyzing trace with hash -933425089, now seen corresponding path program 1 times [2021-04-28 21:45:00,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:45:00,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62498383] [2021-04-28 21:45:00,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:45:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:45:00,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:00,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-28 21:45:00,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:00,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 21:45:00,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:00,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-28 21:45:00,784 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-04-28 21:45:00,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-28 21:45:00,835 INFO L142 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-04-28 21:45:00,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-28 21:45:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:45:00,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62498383] [2021-04-28 21:45:00,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:45:00,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-28 21:45:00,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769533305] [2021-04-28 21:45:00,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-28 21:45:00,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:45:00,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-28 21:45:00,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-04-28 21:45:00,873 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 376 [2021-04-28 21:45:00,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 231.85714285714286) internal successors, (1623), 7 states have internal predecessors, (1623), 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) [2021-04-28 21:45:00,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:45:00,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 376 [2021-04-28 21:45:00,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:45:01,397 INFO L129 PetriNetUnfolder]: 147/688 cut-off events. [2021-04-28 21:45:01,398 INFO L130 PetriNetUnfolder]: For 1659/1776 co-relation queries the response was YES. [2021-04-28 21:45:01,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 688 events. 147/688 cut-off events. For 1659/1776 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6097 event pairs, 4 based on Foata normal form. 18/450 useless extension candidates. Maximal degree in co-relation 2376. Up to 185 conditions per place. [2021-04-28 21:45:01,411 INFO L132 encePairwiseOnDemand]: 367/376 looper letters, 11 selfloop transitions, 40 changer transitions 0/94 dead transitions. [2021-04-28 21:45:01,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 94 transitions, 664 flow [2021-04-28 21:45:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-28 21:45:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-28 21:45:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1646 transitions. [2021-04-28 21:45:01,421 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6253799392097265 [2021-04-28 21:45:01,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1646 transitions. [2021-04-28 21:45:01,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1646 transitions. [2021-04-28 21:45:01,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:45:01,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1646 transitions. [2021-04-28 21:45:01,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 235.14285714285714) internal successors, (1646), 7 states have internal predecessors, (1646), 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) [2021-04-28 21:45:01,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2021-04-28 21:45:01,435 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2021-04-28 21:45:01,435 INFO L185 Difference]: Start difference. First operand has 84 places, 74 transitions, 405 flow. Second operand 7 states and 1646 transitions. [2021-04-28 21:45:01,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 94 transitions, 664 flow [2021-04-28 21:45:01,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 618 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-04-28 21:45:01,447 INFO L241 Difference]: Finished difference. Result has 90 places, 93 transitions, 648 flow [2021-04-28 21:45:01,447 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2021-04-28 21:45:01,447 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -63 predicate places. [2021-04-28 21:45:01,447 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:45:01,448 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 93 transitions, 648 flow [2021-04-28 21:45:01,448 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 93 transitions, 648 flow [2021-04-28 21:45:01,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 93 transitions, 648 flow [2021-04-28 21:45:01,543 INFO L129 PetriNetUnfolder]: 100/489 cut-off events. [2021-04-28 21:45:01,543 INFO L130 PetriNetUnfolder]: For 1235/1265 co-relation queries the response was YES. [2021-04-28 21:45:01,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 489 events. 100/489 cut-off events. For 1235/1265 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4088 event pairs, 9 based on Foata normal form. 10/309 useless extension candidates. Maximal degree in co-relation 1771. Up to 133 conditions per place. [2021-04-28 21:45:01,562 INFO L146 LiptonReduction]: Number of co-enabled transitions 3280 [2021-04-28 21:45:01,572 INFO L158 LiptonReduction]: Checked pairs total: 994 [2021-04-28 21:45:01,573 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:45:01,573 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 126 [2021-04-28 21:45:01,575 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 648 flow [2021-04-28 21:45:01,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 231.85714285714286) internal successors, (1623), 7 states have internal predecessors, (1623), 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) [2021-04-28 21:45:01,576 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:45:01,576 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:45:01,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-28 21:45:01,576 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:45:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:45:01,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2053747621, now seen corresponding path program 2 times [2021-04-28 21:45:01,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:45:01,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109246166] [2021-04-28 21:45:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:45:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:45:01,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:01,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 21:45:01,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:01,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-28 21:45:01,710 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.3 percent of original size [2021-04-28 21:45:01,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-28 21:45:01,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:01,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-28 21:45:01,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:01,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-28 21:45:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:45:01,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109246166] [2021-04-28 21:45:01,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:45:01,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-28 21:45:01,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272542504] [2021-04-28 21:45:01,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-28 21:45:01,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:45:01,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-28 21:45:01,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-04-28 21:45:01,889 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 376 [2021-04-28 21:45:01,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 648 flow. Second operand has 7 states, 7 states have (on average 229.85714285714286) internal successors, (1609), 7 states have internal predecessors, (1609), 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) [2021-04-28 21:45:01,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:45:01,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 376 [2021-04-28 21:45:01,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:45:02,290 INFO L129 PetriNetUnfolder]: 141/745 cut-off events. [2021-04-28 21:45:02,290 INFO L130 PetriNetUnfolder]: For 1732/1854 co-relation queries the response was YES. [2021-04-28 21:45:02,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3023 conditions, 745 events. 141/745 cut-off events. For 1732/1854 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 6984 event pairs, 4 based on Foata normal form. 19/484 useless extension candidates. Maximal degree in co-relation 2996. Up to 299 conditions per place. [2021-04-28 21:45:02,307 INFO L132 encePairwiseOnDemand]: 367/376 looper letters, 29 selfloop transitions, 26 changer transitions 0/98 dead transitions. [2021-04-28 21:45:02,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 98 transitions, 802 flow [2021-04-28 21:45:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 21:45:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 21:45:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1166 transitions. [2021-04-28 21:45:02,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6202127659574468 [2021-04-28 21:45:02,315 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1166 transitions. [2021-04-28 21:45:02,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1166 transitions. [2021-04-28 21:45:02,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:45:02,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1166 transitions. [2021-04-28 21:45:02,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.2) internal successors, (1166), 5 states have internal predecessors, (1166), 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) [2021-04-28 21:45:02,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:45:02,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:45:02,324 INFO L185 Difference]: Start difference. First operand has 90 places, 93 transitions, 648 flow. Second operand 5 states and 1166 transitions. [2021-04-28 21:45:02,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 98 transitions, 802 flow [2021-04-28 21:45:02,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 782 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-04-28 21:45:02,339 INFO L241 Difference]: Finished difference. Result has 95 places, 95 transitions, 717 flow [2021-04-28 21:45:02,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=717, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2021-04-28 21:45:02,339 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -58 predicate places. [2021-04-28 21:45:02,339 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:45:02,340 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 95 transitions, 717 flow [2021-04-28 21:45:02,340 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 95 transitions, 717 flow [2021-04-28 21:45:02,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 95 transitions, 717 flow [2021-04-28 21:45:02,437 INFO L129 PetriNetUnfolder]: 91/511 cut-off events. [2021-04-28 21:45:02,437 INFO L130 PetriNetUnfolder]: For 1399/1422 co-relation queries the response was YES. [2021-04-28 21:45:02,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 511 events. 91/511 cut-off events. For 1399/1422 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4423 event pairs, 11 based on Foata normal form. 10/327 useless extension candidates. Maximal degree in co-relation 1847. Up to 134 conditions per place. [2021-04-28 21:45:02,457 INFO L146 LiptonReduction]: Number of co-enabled transitions 3342 [2021-04-28 21:45:02,517 INFO L158 LiptonReduction]: Checked pairs total: 1084 [2021-04-28 21:45:02,517 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:45:02,517 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 178 [2021-04-28 21:45:02,519 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 717 flow [2021-04-28 21:45:02,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 229.85714285714286) internal successors, (1609), 7 states have internal predecessors, (1609), 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) [2021-04-28 21:45:02,519 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:45:02,520 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:45:02,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-28 21:45:02,520 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:45:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:45:02,520 INFO L82 PathProgramCache]: Analyzing trace with hash 645389477, now seen corresponding path program 3 times [2021-04-28 21:45:02,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:45:02,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773450941] [2021-04-28 21:45:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:45:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:45:02,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:02,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-28 21:45:02,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:02,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-28 21:45:02,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:02,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-28 21:45:02,796 INFO L142 QuantifierPusher]: treesize reduction 4, result has 88.6 percent of original size [2021-04-28 21:45:02,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-28 21:45:02,888 INFO L142 QuantifierPusher]: treesize reduction 4, result has 86.2 percent of original size [2021-04-28 21:45:02,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-28 21:45:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:45:02,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773450941] [2021-04-28 21:45:02,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:45:02,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-28 21:45:02,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621983310] [2021-04-28 21:45:02,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-28 21:45:02,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:45:02,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-28 21:45:02,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-28 21:45:02,955 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 376 [2021-04-28 21:45:02,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 717 flow. Second operand has 7 states, 7 states have (on average 231.85714285714286) internal successors, (1623), 7 states have internal predecessors, (1623), 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) [2021-04-28 21:45:02,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:45:02,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 376 [2021-04-28 21:45:02,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:45:03,345 INFO L129 PetriNetUnfolder]: 134/725 cut-off events. [2021-04-28 21:45:03,345 INFO L130 PetriNetUnfolder]: For 1873/1993 co-relation queries the response was YES. [2021-04-28 21:45:03,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 725 events. 134/725 cut-off events. For 1873/1993 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6788 event pairs, 3 based on Foata normal form. 19/470 useless extension candidates. Maximal degree in co-relation 2952. Up to 264 conditions per place. [2021-04-28 21:45:03,360 INFO L132 encePairwiseOnDemand]: 367/376 looper letters, 19 selfloop transitions, 35 changer transitions 0/97 dead transitions. [2021-04-28 21:45:03,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 835 flow [2021-04-28 21:45:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 21:45:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 21:45:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1176 transitions. [2021-04-28 21:45:03,368 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625531914893617 [2021-04-28 21:45:03,368 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1176 transitions. [2021-04-28 21:45:03,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1176 transitions. [2021-04-28 21:45:03,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:45:03,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1176 transitions. [2021-04-28 21:45:03,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.2) internal successors, (1176), 5 states have internal predecessors, (1176), 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) [2021-04-28 21:45:03,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:45:03,376 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:45:03,377 INFO L185 Difference]: Start difference. First operand has 95 places, 95 transitions, 717 flow. Second operand 5 states and 1176 transitions. [2021-04-28 21:45:03,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 835 flow [2021-04-28 21:45:03,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 780 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-04-28 21:45:03,391 INFO L241 Difference]: Finished difference. Result has 97 places, 95 transitions, 764 flow [2021-04-28 21:45:03,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=764, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2021-04-28 21:45:03,391 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -56 predicate places. [2021-04-28 21:45:03,392 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:45:03,392 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 95 transitions, 764 flow [2021-04-28 21:45:03,392 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 95 transitions, 764 flow [2021-04-28 21:45:03,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 95 transitions, 764 flow [2021-04-28 21:45:03,477 INFO L129 PetriNetUnfolder]: 88/487 cut-off events. [2021-04-28 21:45:03,477 INFO L130 PetriNetUnfolder]: For 1666/1689 co-relation queries the response was YES. [2021-04-28 21:45:03,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1910 conditions, 487 events. 88/487 cut-off events. For 1666/1689 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4143 event pairs, 7 based on Foata normal form. 10/311 useless extension candidates. Maximal degree in co-relation 1881. Up to 131 conditions per place. [2021-04-28 21:45:03,495 INFO L146 LiptonReduction]: Number of co-enabled transitions 3340 [2021-04-28 21:45:03,506 INFO L158 LiptonReduction]: Checked pairs total: 1070 [2021-04-28 21:45:03,507 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:45:03,507 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 115 [2021-04-28 21:45:03,508 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 764 flow [2021-04-28 21:45:03,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 231.85714285714286) internal successors, (1623), 7 states have internal predecessors, (1623), 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) [2021-04-28 21:45:03,509 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:45:03,509 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:45:03,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-28 21:45:03,509 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:45:03,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:45:03,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1191614829, now seen corresponding path program 1 times [2021-04-28 21:45:03,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:45:03,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246773207] [2021-04-28 21:45:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:45:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:45:03,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:03,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:45:03,581 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 21:45:03,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 21:45:03,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:03,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 21:45:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:45:03,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246773207] [2021-04-28 21:45:03,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:45:03,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 21:45:03,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033668375] [2021-04-28 21:45:03,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 21:45:03,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:45:03,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 21:45:03,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 21:45:03,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 376 [2021-04-28 21:45:03,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 764 flow. Second operand has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 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) [2021-04-28 21:45:03,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:45:03,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 376 [2021-04-28 21:45:03,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:45:16,753 INFO L129 PetriNetUnfolder]: 69610/105312 cut-off events. [2021-04-28 21:45:16,753 INFO L130 PetriNetUnfolder]: For 40159/110881 co-relation queries the response was YES. [2021-04-28 21:45:17,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233973 conditions, 105312 events. 69610/105312 cut-off events. For 40159/110881 co-relation queries the response was YES. Maximal size of possible extension queue 22270. Compared 1081337 event pairs, 34104 based on Foata normal form. 2360/29042 useless extension candidates. Maximal degree in co-relation 233942. Up to 67378 conditions per place. [2021-04-28 21:45:17,806 INFO L132 encePairwiseOnDemand]: 356/376 looper letters, 39 selfloop transitions, 33 changer transitions 0/139 dead transitions. [2021-04-28 21:45:17,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 139 transitions, 996 flow [2021-04-28 21:45:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 21:45:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 21:45:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1481 transitions. [2021-04-28 21:45:17,814 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7877659574468086 [2021-04-28 21:45:17,814 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1481 transitions. [2021-04-28 21:45:17,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1481 transitions. [2021-04-28 21:45:17,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:45:17,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1481 transitions. [2021-04-28 21:45:17,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.2) internal successors, (1481), 5 states have internal predecessors, (1481), 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) [2021-04-28 21:45:17,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:45:17,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 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) [2021-04-28 21:45:17,824 INFO L185 Difference]: Start difference. First operand has 97 places, 95 transitions, 764 flow. Second operand 5 states and 1481 transitions. [2021-04-28 21:45:17,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 139 transitions, 996 flow [2021-04-28 21:45:18,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 139 transitions, 920 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-04-28 21:45:18,401 INFO L241 Difference]: Finished difference. Result has 100 places, 126 transitions, 954 flow [2021-04-28 21:45:18,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=954, PETRI_PLACES=100, PETRI_TRANSITIONS=126} [2021-04-28 21:45:18,402 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -53 predicate places. [2021-04-28 21:45:18,402 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:45:18,402 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 126 transitions, 954 flow [2021-04-28 21:45:18,403 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 126 transitions, 954 flow [2021-04-28 21:45:18,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 126 transitions, 954 flow [2021-04-28 21:45:29,131 INFO L129 PetriNetUnfolder]: 63716/96766 cut-off events. [2021-04-28 21:45:29,132 INFO L130 PetriNetUnfolder]: For 55433/618293 co-relation queries the response was YES. [2021-04-28 21:45:30,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292353 conditions, 96766 events. 63716/96766 cut-off events. For 55433/618293 co-relation queries the response was YES. Maximal size of possible extension queue 20570. Compared 994477 event pairs, 33220 based on Foata normal form. 16/25163 useless extension candidates. Maximal degree in co-relation 292321. Up to 89273 conditions per place. [2021-04-28 21:45:31,172 INFO L146 LiptonReduction]: Number of co-enabled transitions 4760 [2021-04-28 21:45:31,417 INFO L158 LiptonReduction]: Checked pairs total: 1158 [2021-04-28 21:45:31,417 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:45:31,417 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13015 [2021-04-28 21:45:31,419 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 126 transitions, 954 flow [2021-04-28 21:45:31,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 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) [2021-04-28 21:45:31,419 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:45:31,420 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:45:31,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-28 21:45:31,420 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:45:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:45:31,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1434674503, now seen corresponding path program 1 times [2021-04-28 21:45:31,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:45:31,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100492866] [2021-04-28 21:45:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:45:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:45:31,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:31,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:45:31,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:31,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:45:31,516 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 21:45:31,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 21:45:31,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:45:31,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 21:45:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:45:31,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100492866] [2021-04-28 21:45:31,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:45:31,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-28 21:45:31,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201780430] [2021-04-28 21:45:31,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 21:45:31,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:45:31,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 21:45:31,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 21:45:31,551 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 376 [2021-04-28 21:45:31,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 126 transitions, 954 flow. Second operand has 5 states, 5 states have (on average 283.8) internal successors, (1419), 5 states have internal predecessors, (1419), 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) [2021-04-28 21:45:31,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:45:31,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 376 [2021-04-28 21:45:31,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:45:47,471 INFO L129 PetriNetUnfolder]: 72097/115569 cut-off events. [2021-04-28 21:45:47,471 INFO L130 PetriNetUnfolder]: For 110569/3816345 co-relation queries the response was YES. [2021-04-28 21:45:48,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 453618 conditions, 115569 events. 72097/115569 cut-off events. For 110569/3816345 co-relation queries the response was YES. Maximal size of possible extension queue 26550. Compared 1278999 event pairs, 11088 based on Foata normal form. 2765/34914 useless extension candidates. Maximal degree in co-relation 453584. Up to 105497 conditions per place. [2021-04-28 21:45:48,514 INFO L132 encePairwiseOnDemand]: 356/376 looper letters, 40 selfloop transitions, 64 changer transitions 3/171 dead transitions. [2021-04-28 21:45:48,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 171 transitions, 1411 flow [2021-04-28 21:45:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-28 21:45:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-28 21:45:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2077 transitions. [2021-04-28 21:45:48,524 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7891337386018237 [2021-04-28 21:45:48,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2077 transitions. [2021-04-28 21:45:48,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2077 transitions. [2021-04-28 21:45:48,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:45:48,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2077 transitions. [2021-04-28 21:45:48,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 296.7142857142857) internal successors, (2077), 7 states have internal predecessors, (2077), 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) [2021-04-28 21:45:48,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2021-04-28 21:45:48,537 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2021-04-28 21:45:48,537 INFO L185 Difference]: Start difference. First operand has 100 places, 126 transitions, 954 flow. Second operand 7 states and 2077 transitions. [2021-04-28 21:45:48,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 171 transitions, 1411 flow [2021-04-28 21:45:48,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 171 transitions, 1395 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-04-28 21:45:48,963 INFO L241 Difference]: Finished difference. Result has 108 places, 154 transitions, 1367 flow [2021-04-28 21:45:48,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1367, PETRI_PLACES=108, PETRI_TRANSITIONS=154} [2021-04-28 21:45:48,963 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -45 predicate places. [2021-04-28 21:45:48,963 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:45:48,963 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 154 transitions, 1367 flow [2021-04-28 21:45:48,964 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 154 transitions, 1367 flow [2021-04-28 21:45:48,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 154 transitions, 1367 flow [2021-04-28 21:46:03,421 INFO L129 PetriNetUnfolder]: 66535/107955 cut-off events. [2021-04-28 21:46:03,421 INFO L130 PetriNetUnfolder]: For 187913/3631031 co-relation queries the response was YES. [2021-04-28 21:46:04,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 518979 conditions, 107955 events. 66535/107955 cut-off events. For 187913/3631031 co-relation queries the response was YES. Maximal size of possible extension queue 24914. Compared 1251110 event pairs, 11052 based on Foata normal form. 78/28339 useless extension candidates. Maximal degree in co-relation 518943. Up to 100853 conditions per place. [2021-04-28 21:46:05,501 INFO L146 LiptonReduction]: Number of co-enabled transitions 5884 [2021-04-28 21:46:05,700 INFO L158 LiptonReduction]: Checked pairs total: 1520 [2021-04-28 21:46:05,700 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:46:05,700 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16737 [2021-04-28 21:46:05,702 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 154 transitions, 1367 flow [2021-04-28 21:46:05,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 283.8) internal successors, (1419), 5 states have internal predecessors, (1419), 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) [2021-04-28 21:46:05,702 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:46:05,702 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:46:05,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-04-28 21:46:05,703 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:46:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:46:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1355200958, now seen corresponding path program 1 times [2021-04-28 21:46:05,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:46:05,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288947395] [2021-04-28 21:46:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:46:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:46:05,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:46:05,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 21:46:05,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:46:05,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:46:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:46:05,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288947395] [2021-04-28 21:46:05,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:46:05,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 21:46:05,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116230963] [2021-04-28 21:46:05,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 21:46:05,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:46:05,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 21:46:05,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 21:46:05,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 376 [2021-04-28 21:46:05,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 154 transitions, 1367 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 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) [2021-04-28 21:46:05,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:46:05,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 376 [2021-04-28 21:46:05,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:46:31,436 INFO L129 PetriNetUnfolder]: 119061/187380 cut-off events. [2021-04-28 21:46:31,437 INFO L130 PetriNetUnfolder]: For 329134/4723407 co-relation queries the response was YES. [2021-04-28 21:46:33,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 905580 conditions, 187380 events. 119061/187380 cut-off events. For 329134/4723407 co-relation queries the response was YES. Maximal size of possible extension queue 43200. Compared 2089598 event pairs, 22167 based on Foata normal form. 543/50215 useless extension candidates. Maximal degree in co-relation 905542. Up to 176141 conditions per place. [2021-04-28 21:46:33,391 INFO L132 encePairwiseOnDemand]: 373/376 looper letters, 3 selfloop transitions, 3 changer transitions 0/154 dead transitions. [2021-04-28 21:46:33,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 154 transitions, 1379 flow [2021-04-28 21:46:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 21:46:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 21:46:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 825 transitions. [2021-04-28 21:46:33,397 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7313829787234043 [2021-04-28 21:46:33,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 825 transitions. [2021-04-28 21:46:33,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 825 transitions. [2021-04-28 21:46:33,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:46:33,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 825 transitions. [2021-04-28 21:46:33,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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) [2021-04-28 21:46:33,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:46:33,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 21:46:33,403 INFO L185 Difference]: Start difference. First operand has 108 places, 154 transitions, 1367 flow. Second operand 3 states and 825 transitions. [2021-04-28 21:46:33,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 154 transitions, 1379 flow [2021-04-28 21:46:55,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 154 transitions, 1217 flow, removed 54 selfloop flow, removed 3 redundant places. [2021-04-28 21:46:55,961 INFO L241 Difference]: Finished difference. Result has 108 places, 154 transitions, 1216 flow [2021-04-28 21:46:55,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1216, PETRI_PLACES=108, PETRI_TRANSITIONS=154} [2021-04-28 21:46:55,961 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -45 predicate places. [2021-04-28 21:46:55,961 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:46:55,961 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 154 transitions, 1216 flow [2021-04-28 21:46:55,962 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 154 transitions, 1216 flow [2021-04-28 21:46:55,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 154 transitions, 1216 flow [2021-04-28 21:47:21,438 INFO L129 PetriNetUnfolder]: 119331/187335 cut-off events. [2021-04-28 21:47:21,438 INFO L130 PetriNetUnfolder]: For 697568/1535235 co-relation queries the response was YES. [2021-04-28 21:47:23,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852684 conditions, 187335 events. 119331/187335 cut-off events. For 697568/1535235 co-relation queries the response was YES. Maximal size of possible extension queue 43222. Compared 2197170 event pairs, 21483 based on Foata normal form. 70/49212 useless extension candidates. Maximal degree in co-relation 852648. Up to 159130 conditions per place. [2021-04-28 21:47:25,468 INFO L146 LiptonReduction]: Number of co-enabled transitions 5882 [2021-04-28 21:47:26,433 INFO L158 LiptonReduction]: Checked pairs total: 1520 [2021-04-28 21:47:26,433 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 21:47:26,433 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30472 [2021-04-28 21:47:26,435 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 154 transitions, 1216 flow [2021-04-28 21:47:26,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 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) [2021-04-28 21:47:26,435 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:47:26,435 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:47:26,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-28 21:47:26,436 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:47:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:47:26,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1559905191, now seen corresponding path program 1 times [2021-04-28 21:47:26,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:47:26,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683395477] [2021-04-28 21:47:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:47:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:47:26,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:47:26,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:47:26,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:47:26,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:47:26,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:47:26,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:47:26,533 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 21:47:26,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 21:47:26,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:47:26,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 21:47:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:47:26,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683395477] [2021-04-28 21:47:26,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:47:26,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-28 21:47:26,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715589548] [2021-04-28 21:47:26,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-28 21:47:26,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:47:26,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-28 21:47:26,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-28 21:47:26,567 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 376 [2021-04-28 21:47:26,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 154 transitions, 1216 flow. Second operand has 6 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 6 states have internal predecessors, (1703), 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) [2021-04-28 21:47:26,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:47:26,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 376 [2021-04-28 21:47:26,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:47:57,017 INFO L129 PetriNetUnfolder]: 114150/190023 cut-off events. [2021-04-28 21:47:57,017 INFO L130 PetriNetUnfolder]: For 352750/3727056 co-relation queries the response was YES. [2021-04-28 21:47:58,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1032415 conditions, 190023 events. 114150/190023 cut-off events. For 352750/3727056 co-relation queries the response was YES. Maximal size of possible extension queue 46275. Compared 2322775 event pairs, 2592 based on Foata normal form. 4298/55603 useless extension candidates. Maximal degree in co-relation 1032377. Up to 159013 conditions per place. [2021-04-28 21:47:58,657 INFO L132 encePairwiseOnDemand]: 356/376 looper letters, 26 selfloop transitions, 95 changer transitions 12/184 dead transitions. [2021-04-28 21:47:58,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 184 transitions, 1707 flow [2021-04-28 21:47:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-28 21:47:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-28 21:47:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2673 transitions. [2021-04-28 21:47:58,670 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7898936170212766 [2021-04-28 21:47:58,670 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2673 transitions. [2021-04-28 21:47:58,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2673 transitions. [2021-04-28 21:47:58,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:47:58,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2673 transitions. [2021-04-28 21:47:58,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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) [2021-04-28 21:47:58,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2021-04-28 21:47:58,684 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2021-04-28 21:47:58,684 INFO L185 Difference]: Start difference. First operand has 108 places, 154 transitions, 1216 flow. Second operand 9 states and 2673 transitions. [2021-04-28 21:47:58,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 184 transitions, 1707 flow [2021-04-28 21:48:17,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 184 transitions, 1675 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-04-28 21:48:17,860 INFO L241 Difference]: Finished difference. Result has 114 places, 169 transitions, 1598 flow [2021-04-28 21:48:17,860 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=114, PETRI_TRANSITIONS=169} [2021-04-28 21:48:17,860 INFO L343 CegarLoopForPetriNet]: 153 programPoint places, -39 predicate places. [2021-04-28 21:48:17,860 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 21:48:17,861 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 169 transitions, 1598 flow [2021-04-28 21:48:17,861 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 169 transitions, 1598 flow [2021-04-28 21:48:17,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 169 transitions, 1598 flow [2021-04-28 21:48:40,381 INFO L129 PetriNetUnfolder]: 87588/154754 cut-off events. [2021-04-28 21:48:40,381 INFO L130 PetriNetUnfolder]: For 476397/1406622 co-relation queries the response was YES. [2021-04-28 21:48:41,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 935344 conditions, 154754 events. 87588/154754 cut-off events. For 476397/1406622 co-relation queries the response was YES. Maximal size of possible extension queue 39287. Compared 2068213 event pairs, 2700 based on Foata normal form. 50/39020 useless extension candidates. Maximal degree in co-relation 935307. Up to 128557 conditions per place. [2021-04-28 21:48:43,816 INFO L146 LiptonReduction]: Number of co-enabled transitions 6368 [2021-04-28 21:48:44,867 WARN L205 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-04-28 21:48:45,120 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 21:48:46,467 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2021-04-28 21:48:47,013 WARN L205 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-28 21:48:47,374 INFO L158 LiptonReduction]: Checked pairs total: 2210 [2021-04-28 21:48:47,374 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-28 21:48:47,374 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29514 [2021-04-28 21:48:47,376 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 170 transitions, 1606 flow [2021-04-28 21:48:47,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 6 states have internal predecessors, (1703), 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) [2021-04-28 21:48:47,376 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 21:48:47,377 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 21:48:47,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-04-28 21:48:47,377 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 21:48:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 21:48:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash -918781011, now seen corresponding path program 1 times [2021-04-28 21:48:47,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 21:48:47,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558192066] [2021-04-28 21:48:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 21:48:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 21:48:47,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:48:47,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:48:47,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:48:47,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:48:47,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:48:47,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:48:47,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:48:47,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 21:48:47,512 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 21:48:47,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 21:48:47,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 21:48:47,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 21:48:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 21:48:47,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558192066] [2021-04-28 21:48:47,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 21:48:47,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-28 21:48:47,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936594867] [2021-04-28 21:48:47,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-28 21:48:47,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 21:48:47,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-28 21:48:47,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-28 21:48:47,555 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 377 [2021-04-28 21:48:47,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 170 transitions, 1606 flow. Second operand has 7 states, 7 states have (on average 284.85714285714283) internal successors, (1994), 7 states have internal predecessors, (1994), 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) [2021-04-28 21:48:47,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 21:48:47,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 377 [2021-04-28 21:48:47,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 21:49:16,855 INFO L129 PetriNetUnfolder]: 90336/157770 cut-off events. [2021-04-28 21:49:16,855 INFO L130 PetriNetUnfolder]: For 476162/3309453 co-relation queries the response was YES. [2021-04-28 21:49:18,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1095620 conditions, 157770 events. 90336/157770 cut-off events. For 476162/3309453 co-relation queries the response was YES. Maximal size of possible extension queue 43236. Compared 2000392 event pairs, 0 based on Foata normal form. 2865/42934 useless extension candidates. Maximal degree in co-relation 1095592. Up to 129583 conditions per place. [2021-04-28 21:49:18,416 INFO L132 encePairwiseOnDemand]: 357/377 looper letters, 6 selfloop transitions, 113 changer transitions 20/189 dead transitions. [2021-04-28 21:49:18,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 189 transitions, 2037 flow [2021-04-28 21:49:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-28 21:49:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-04-28 21:49:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3256 transitions. [2021-04-28 21:49:18,427 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7851458885941645 [2021-04-28 21:49:18,428 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3256 transitions. [2021-04-28 21:49:18,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3256 transitions. [2021-04-28 21:49:18,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 21:49:18,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3256 transitions. [2021-04-28 21:49:18,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 296.0) internal successors, (3256), 11 states have internal predecessors, (3256), 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) [2021-04-28 21:49:18,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 377.0) internal successors, (4524), 12 states have internal predecessors, (4524), 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) [2021-04-28 21:49:18,444 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 377.0) internal successors, (4524), 12 states have internal predecessors, (4524), 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) [2021-04-28 21:49:18,444 INFO L185 Difference]: Start difference. First operand has 115 places, 170 transitions, 1606 flow. Second operand 11 states and 3256 transitions. [2021-04-28 21:49:18,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 189 transitions, 2037 flow